+++ /dev/null
-####################################################
-# fnordlicht-ng Makefile
-####################################################
-
-# ATTENTION:
-# Any of these variables are overridden with the values from the file
-# "config.mk", you can tune your settings there. The file "config.mk" is not
-# under version control.
-# Just run 'make' to create a "config.mk" with the default settings
-
-# hardware type, possible values (default is unset):
-# ATTENTION: please configure in config.mk, this is just included here for reference!
-# - fnordlicht -- original fnordlicht hardware
-# - fnordlichtmini -- fnordlichtmini hardware
-#HARDWARE = fnordlicht
-
-# controller
-MCU = atmega8
-
-# frequency
-F_CPU = 16000000UL
-
-# main application name (without .hex)
-# eg 'test' when the main function is defined in 'test.c'
-TARGET = fboot
-
-# c sourcecode files
-# eg. 'test.c foo.c foobar/baz.c'
-SRC = $(wildcard *.c)
-
-# asm sourcecode files
-# eg. 'interrupts.S foobar/another.S'
-ASRC = $(wildcard *.S)
-
-# headers which should be considered when recompiling
-# eg. 'global.h foobar/important.h'
-HEADERS = $(wildcard *.h)
-
-# include directories (used for both, c and asm)
-# eg '. usbdrv/'
-INCLUDES =
-
-
-# use more debug-flags when compiling
-DEBUG = 0
-
-# default baudrate
-CONFIG_SERIAL_BAUDRATE = 19200
-
-# avrdude programmer protocol
-PROG = usbasp
-# avrdude programmer device
-DEV = usb
-# further flags for avrdude
-AVRDUDE_FLAGS =
-
-CFLAGS += -DHARDWARE_$(HARDWARE)=1
-CFLAGS += -DCONFIG_SERIAL_BAUDRATE=$(CONFIG_SERIAL_BAUDRATE)
-
-# use a custom linker script
-LDFLAGS += -L$(CURDIR)/ldscripts
-
-.PHONY: all
-
-# main make target (moved up here because of the config.mk target)
-all: $(TARGET).hex
-
-# create config.mk (if it does not exist yet)
-$(CURDIR)/config.mk:
- @$(CP) config.mk.template config.mk
- @echo "===================================================="
- @echo "created file $@"
- @echo 'please tune your settings (especially $$HARDWARE)'
- @echo "there, then run 'make' again"
- @echo "===================================================="
- @exit 1
-
-# include config file
--include $(CURDIR)/config.mk
-
-# bootloader section start
-# (see datasheet)
-ifeq ($(MCU),atmega8)
- # atmega8 with 1024 words bootloader:
- # bootloader section starts at 0xc00 (word-address) == 0x1800 (byte-address)
- #BOOT_SECTION_START = 0x1800
- #
- # atmega8 with 512 words bootloader:
- # bootloader section starts at 0xe00 (word-address) == 0x1c00 (byte-address)
- BOOT_SECTION_START = 0x1c00
- # 7kb data memory (raw memory minus bootloader space)
- DATA_MEM = 7
-
- # use custom linker script
- LDFLAGS += -T avr4.x
-endif
-ifeq ($(MCU),atmega88)
- # atmega88 with 1024 words bootloader:
- # bootloader section starts at 0xc00 (word-address) == 0x1800 (byte-address)
- #BOOT_SECTION_START = 0x1800
- #
- # atmega88 with 512 words bootloader:
- # bootloader section starts at 0xe00 (word-address) == 0x1c00 (byte-address)
- BOOT_SECTION_START = 0x1c00
- # 7kb data memory (raw memory minus bootloader space)
- DATA_MEM = 7
-
- # use custom linker script
- LDFLAGS += -T avr4.x
-endif
-ifeq ($(MCU),atmega168)
- # atmega168 with 1024 words bootloader:
- # bootloader section starts at 0x1c00 (word-address) == 0x3800 (byte-address)
- #BOOT_SECTION_START = 0x3800
- #
- # atmega168 with 512 words bootloader:
- # bootloader section starts at 0x1e00 (word-address) == 0x3c00 (byte-address)
- BOOT_SECTION_START = 0x3c00
- # 15kb data memory (raw memory minus bootloader space)
- DATA_MEM = 15
-
- # use custom linker script
- LDFLAGS += -T avr5.x
-endif
-
-LDFLAGS += -Wl,--section-start=.text=$(BOOT_SECTION_START)
-CFLAGS += -DBOOT_SECTION_START=$(BOOT_SECTION_START)
-
-
-####################################################
-# 'make' configuration
-####################################################
-CC = avr-gcc
-OBJCOPY = avr-objcopy
-OBJDUMP = avr-objdump
-AS = avr-as
-SIZE = avr-size
-CP = cp
-RM = rm -f
-RMDIR = rm -rf
-MKDIR = mkdir
-AVRDUDE = avrdude
-
-# flags for automatic dependency handling
-DEPFLAGS = -MD -MP -MF .dep/$(@F).d
-
-# flags for the compiler (for .c files)
-CFLAGS += -g -Os -mmcu=$(MCU) -DF_CPU=$(F_CPU) -std=gnu99 -fshort-enums $(DEPFLAGS)
-CFLAGS += $(addprefix -I,$(INCLUDES))
-CFLAGS += -fno-split-wide-types
-CFLAGS += --param inline-call-cost=2 -finline-limit=3 -fno-inline-small-functions
-CFLAGS += -Wl,--relax
-
-# flags for the compiler (for .S files)
-ASFLAGS += -g -mmcu=$(MCU) -DF_CPU=$(F_CPU) -x assembler-with-cpp $(DEPFLAGS)
-ASFLAGS += $(addprefix -I,$(INCLUDES))
-
-# flags for the linker
-LDFLAGS += -mmcu=$(MCU)
-
-# fill in object files
-OBJECTS += $(SRC:.c=.o)
-OBJECTS += $(ASRC:.S=.o)
-
-# include more debug flags, if $(DEBUG) is 1
-ifeq ($(DEBUG),1)
- CFLAGS += -Wall -W -Wchar-subscripts -Wmissing-prototypes
- CFLAGS += -Wmissing-declarations -Wredundant-decls
- CFLAGS += -Wstrict-prototypes -Wshadow -Wbad-function-cast
- CFLAGS += -Winline -Wpointer-arith -Wsign-compare
- CFLAGS += -Wunreachable-code -Wdisabled-optimization
- CFLAGS += -Wcast-align -Wwrite-strings -Wnested-externs -Wundef
- CFLAGS += -Wa,-adhlns=$(basename $@).lst
- CFLAGS += -DCONFIG_DEBUG=1
-endif
-
-####################################################
-# avrdude configuration
-####################################################
-ifeq ($(MCU),atmega8)
- AVRDUDE_MCU=m8
-endif
-ifeq ($(MCU),atmega48)
- AVRDUDE_MCU=m48
-endif
-ifeq ($(MCU),atmega88)
- AVRDUDE_MCU=m88
-endif
-ifeq ($(MCU),atmega168)
- AVRDUDE_MCU=m168
-endif
-
-AVRDUDE_FLAGS += -p $(AVRDUDE_MCU)
-
-####################################################
-# make targets
-####################################################
-
-.PHONY: hardware-check clean distclean avrdude-terminal
-
-# check if HARDWARE is set
-hardware-check:
-ifeq ($(HARDWARE),)
- @echo 'please edit config.mk and set $$HARDWARE'
- @exit 1
-endif
-
-$(TARGET).elf: hardware-check $(OBJECTS)
- $(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJECTS)
-
-# all objects (.o files) and config.mk
-$(OBJECTS): $(HEADERS) config.mk
-
-# remove all compiled files
-clean:
- $(RM) $(foreach ext,elf hex eep.hex map,$(TARGET).$(ext)) \
- $(foreach file,$(patsubst %.o,%,$(OBJECTS)),$(foreach ext,o lst lss,$(file).$(ext)))
-
-# additionally remove the dependency makefile and config.mk
-distclean: clean
- $(RMDIR) .dep
- $(RM) config.mk
-
-# avrdude-related targets
-install program: program-$(TARGET)
-
-avrdude-terminal:
- $(AVRDUDE) $(AVRDUDE_FLAGS) -c $(PROG) -P $(DEV) -t
-
-program-%: %.hex
- $(AVRDUDE) $(AVRDUDE_FLAGS) -c $(PROG) -P $(DEV) -U flash:w:$< -U lock:w:0x2f:m
-
-program-eeprom-%: %.eep.hex
- $(AVRDUDE) $(AVRDUDE_FLAGS) -c $(PROG) -P $(DEV) -U eeprom:w:$<
-
-# special programming targets
-%.hex: %.elf
- $(OBJCOPY) -O ihex -R .eeprom $< $@
- @echo "===================================================="
- @echo "$@ compiled for hardware: $(HARDWARE)"
- @echo "using controller $(MCU)"
- @echo -n "size for $< is "
- @$(SIZE) -A $@ | grep '\.sec1' | tr -s ' ' | cut -d" " -f2
- @echo "===================================================="
-
-%.eep.hex: %.elf
- $(OBJCOPY) --set-section-flags=.eeprom="alloc,load" --change-section-lma .eeprom=0 -O ihex -j .eeprom $< $@
-
-%.lss: %.elf
- $(OBJDUMP) -h -S $< > $@
-
-.PHONY: fuses-atmega8-fnordlichtmini-with-bootloader fuses-lock
-
-fuses-atmega8-fnordlichtmini-with-bootloader:
- $(AVRDUDE) $(AVRDUDE_FLAGS) -c $(PROG) -P $(DEV) -U lfuse:w:0x3f:m -U hfuse:w:0xda:m
-
-fuses-atmega8-fnordlichtmini-without-bootloader:
- $(AVRDUDE) $(AVRDUDE_FLAGS) -c $(PROG) -P $(DEV) -U lfuse:w:0x3f:m -U hfuse:w:0xd9:m
-
-fuses-lock:
- $(AVRDUDE) $(AVRDUDE_FLAGS) -c $(PROG) -P $(DEV) -U lock:w:0x2f:m
-
--include $(shell $(MKDIR) .dep 2>/dev/null) $(wildcard .dep/*)
+++ /dev/null
-/* vim:ts=4 sts=4 et tw=80
- *
- * fnordlichtmini serial bootloader
- *
- * for additional information please
- * see http://lochraster.org/fnordlichtmini
- *
- * (c) by Alexander Neumann <alexander@bumpern.de>
- * Lars Noschinski <lars@public.noschinski.de>
- *
- * This program is free software: you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 3 as published by
- * the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef __CONFIG_H
-#define __CONFIG_H
-
-/* configure bootloader buffer size */
-#ifndef CONFIG_BOOTLOADER_BUFSIZE
-#define CONFIG_BOOTLOADER_BUFSIZE 512
-#endif
-
-/* configure exit delay (in 50ms) */
-#ifndef CONFIG_EXIT_DELAY
-#define CONFIG_EXIT_DELAY 2
-#endif
-
-#endif
+++ /dev/null
-# Put your own config here!
-#
-# This file is not under version control, and your settings
-# will not be modified when upgrading the repository
-
-
-###################################################################
-# HARDWARE PLATFORM TYPE
-#
-# possible values:
-# - fnordlicht -- original fnordlicht hardware
-# - fnordlichtmini -- fnordlichtmini hardware
-#HARDWARE = fnordlicht
-
-###################################################################
-# PROGRAMMER
-#
-# avrdude programmer protocol
-#PROG = usbasp
-
-# avrdude programmer device
-#DEV = usb
-
-# further flags for avrdude
-#AVRDUDE_FLAGS =
-
-
-###################################################################
-# controller
-#
-# possible values:
-# - atmega8
-# - atmega88
-# - atmega168
-#
-#MCU = atmega8
-
-# frequency
-#F_CPU = 16000000UL
-
-# use more debug-flags when compiling
-#DEBUG = 1
-
-###################################################################
-# FIRMWARE CONFIGURATION
-#
-
-# default baudrate
-#CONFIG_SERIAL_BAUDRATE = 19200
+++ /dev/null
-/* vim:ts=4 sts=4 et tw=80
- *
- * fnordlichtmini serial bootloader
- *
- * for additional information please
- * see http://lochraster.org/fnordlichtmini
- *
- * (c) by Alexander Neumann <alexander@bumpern.de>
- * Lars Noschinski <lars@public.noschinski.de>
- *
- * This program is free software: you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 3 as published by
- * the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <avr/io.h>
-#include <avr/boot.h>
-#include <avr/wdt.h>
-#include <avr/pgmspace.h>
-#include <util/delay.h>
-#include <util/crc16.h>
-#include <string.h>
-#include <stdbool.h>
-#include "../common/io.h"
-#include "../common/remote-proto.h"
-#include "../common/common.h"
-#include "uart.h"
-#include "global.h"
-
-struct global_t
-{
- /* for bus synchronization */
- uint8_t synced;
- uint8_t sync_len;
-
- /* own device address */
- uint8_t address;
-
- /* for crc checking */
- bool crc_match;
- uint8_t delay;
-
- /* for enter_application command */
- bool request_exit;
- uint8_t exit_delay;
-
- /* for internal message buffer */
- uint8_t len;
- union {
- uint8_t buf[REMOTE_MSG_LEN];
- struct remote_msg_t msg;
- };
-
- /* length and address for data buffer */
- uint16_t data_len;
- uint8_t *data_address;
- union {
- uint8_t data_buf[CONFIG_BOOTLOADER_BUFSIZE];
- uint16_t data_buf16[CONFIG_BOOTLOADER_BUFSIZE/2];
- };
-};
-
-struct global_t __global;
-#define global (&__global)
-
-/* disable watchdog - NEVER CALL DIRECTLY! */
-void disable_watchdog(void) \
- __attribute__((naked)) \
- __attribute__((section(".init3")));
-void disable_watchdog(void)
-{
- MCUSR = 0;
- wdt_disable();
-}
-
-static void (*jump_to_application)(void) = 0;
-
-static void start_application(void) __attribute__((noreturn));
-static void start_application(void)
-{
- /* pwm pins */
- P_PORT = 0;
- P_DDR = 0;
-
- /* in pin */
- R_PORT = 0;
- R_DDR = 0;
-
- /* uart */
- _UBRRH_UART0 = 0;
- _UBRRL_UART0 = 0;
- _UCSRA_UART0 = _BV(_TXC_UART0);
- _UCSRB_UART0 = 0;
-
- /* timer1 */
- TCCR1B = 0;
- OCR1A = 0;
- TCNT1 = 0;
- _TIFR_TIMER1 = _TIFR_TIMER1;
-
- /* move interrupt vectors and start real application */
- jump_to_application();
-}
-
-static void parse_boot_config(struct remote_msg_boot_config_t *msg)
-{
- /* remember flash address */
- global->data_address = (uint8_t *)msg->start_address;
-}
-
-static void parse_data(struct remote_msg_boot_data_t *msg)
-{
- uint8_t len = sizeof(msg->data);
- if (global->data_len + len > CONFIG_BOOTLOADER_BUFSIZE)
- len = CONFIG_BOOTLOADER_BUFSIZE - global->data_len;
-
- memcpy(&global->data_buf[global->data_len], msg->data, len);
- global->data_len += len;
-}
-
-static void parse_crc(struct remote_msg_boot_crc_check_t *msg)
-{
- /* compute crc16 over buffer */
- uint16_t checksum = 0xffff;
-
- uint8_t *ptr = &global->data_buf[0];
- uint16_t i = msg->len+1;
- while (--i)
- checksum = _crc16_update(checksum, *ptr++);
-
- if (checksum != msg->checksum) {
- global->delay = msg->delay;
- global->crc_match = false;
- } else
- global->crc_match = true;
-}
-
-static void parse_crc_flash(struct remote_msg_boot_crc_flash_t *msg)
-{
- /* compute crc16 over flash */
- uint16_t checksum = 0xffff;
-
- uint8_t *address = (uint8_t *)msg->start;
- uint16_t i = msg->len+1;
- while (--i) {
- uint8_t data = pgm_read_byte(address++);
- checksum = _crc16_update(checksum, data);
- }
-
- if (checksum != msg->checksum) {
- global->delay = msg->delay;
- global->crc_match = false;
- } else
- global->crc_match = true;
-}
-
-static void flash(void)
-{
- /* pull int */
- R_DDR |= _BV(INTPIN);
-
- uint8_t *addr = global->data_address;
- uint16_t *data = &global->data_buf16[0];
-
- uint8_t last_page = global->data_len/SPM_PAGESIZE;
- if (global->data_len % SPM_PAGESIZE)
- last_page++;
-
- for (uint8_t page = 0; page < last_page; page++)
- {
- PWM_PIN_ON(PWM_GREEN);
-
- /* erase page */
- boot_page_erase(addr);
- boot_spm_busy_wait();
-
- for (uint16_t i = 0; i < SPM_PAGESIZE; i += 2) {
- /* fill internal buffer */
- boot_page_fill(addr+i, *data++);
- boot_spm_busy_wait();
- }
-
- /* after filling the temp buffer, write the page and wait till we're done */
- boot_page_write(addr);
- boot_spm_busy_wait();
-
- /* re-enable application flash section, so we can read it again */
- boot_rww_enable();
-
- PWM_PIN_OFF(PWM_GREEN);
- addr += SPM_PAGESIZE;
- }
-
- global->data_address = addr;
-
- /* release int */
- R_DDR &= ~_BV(INTPIN);
-}
-
-static void remote_parse_msg(struct remote_msg_t *msg)
-{
- /* verify address */
- if (msg->address != global->address && msg->address != REMOTE_ADDR_BROADCAST)
- return;
-
- /* parse command */
- switch (msg->cmd) {
- case REMOTE_CMD_BOOT_CONFIG: parse_boot_config((struct remote_msg_boot_config_t *)msg);
- break;
- case REMOTE_CMD_BOOT_INIT: global->data_len = 0;
- break;
- case REMOTE_CMD_BOOT_DATA: parse_data((struct remote_msg_boot_data_t *)msg);
- break;
- case REMOTE_CMD_CRC_CHECK: parse_crc((struct remote_msg_boot_crc_check_t *)msg);
- break;
- case REMOTE_CMD_CRC_FLASH: parse_crc_flash((struct remote_msg_boot_crc_flash_t *)msg);
- break;
- case REMOTE_CMD_FLASH: flash();
- break;
- case REMOTE_CMD_ENTER_APP: global->request_exit = true;
- global->exit_delay = CONFIG_EXIT_DELAY;
- break;
- }
-
- if (global->delay && global->crc_match == false) {
- /* pull int to gnd */
- R_DDR |= _BV(INTPIN);
-
- PWM_PIN_ON(PWM_RED);
- }
-}
-
-static void remote_poll(void)
-{
- /* wait for a byte */
- if (uart_receive_complete())
- {
- uint8_t data = uart_getc();
-
- /* check if sync sequence has been received before */
- if (global->sync_len == REMOTE_SYNC_LEN) {
- /* synced, safe address and send next address to following device */
- global->address = data;
- uart_putc(data+1);
-
- /* reset buffer */
- global->len = 0;
-
- /* enable remote command thread */
- global->synced = 1;
- } else {
- /* just pass through data */
- uart_putc(data);
-
- /* put data into remote buffer
- * (just processed if remote.synced == 1) */
- if (global->len < sizeof(global->buf))
- global->buf[global->len++] = data;
- }
-
- /* remember the number of sync bytes received so far */
- if (data == REMOTE_CMD_RESYNC)
- global->sync_len++;
- else
- global->sync_len = 0;
- }
-
- if (global->synced && global->len == REMOTE_MSG_LEN) {
- remote_parse_msg(&global->msg);
- global->len = 0;
- }
-}
-
-static void check_startup(void)
-{
- /* check for valid reset vector */
- if (pgm_read_word(NULL) == 0xffff)
- return;
-
- /* configure pullup resistor at int pin */
- R_PORT |= _BV(INTPIN);
-
- /* sleep 100ms (TCNT1 == 2, -> TCNT1L == 2) */
- while (TCNT1L < 2);
-
- /* if int pin is pulled down, remain in bootloader */
- if (!(R_PIN & _BV(INTPIN)))
- return;
-
- /* else cleanup and start application */
- start_application();
-}
-
-int __attribute__ ((noreturn,OS_main)) main(void)
-{
- /* initialize timer1, CTC at 50ms, prescaler 1024 */
- OCR1A = F_CPU/1024/20;
- TCCR1B = _BV(WGM12) | _BV(CS12) | _BV(CS10);
-
- /* start application if necessary */
- check_startup();
-
- /* configure and enable uart */
- uart_init();
-
- /* configure outputs */
- P_DDR = PWM_CHANNEL_MASK;
-
-#ifdef PWM_INVERTED
- P_PORT = PWM_CHANNEL_MASK;
-#endif
-
- while(1) {
- remote_poll();
-
- if (_TIFR_TIMER1 & _BV(OCF1A)) {
- _TIFR_TIMER1 = _BV(OCF1A);
-
- static uint8_t c;
- if (c++ == 20) {
- /* blink */
- PWM_PIN_TOGGLE(PWM_BLUE);
- c = 0;
- }
-
- /* if int is pulled, decrement delay */
- if (R_DDR & _BV(INTPIN)) {
- if (--global->delay == 0) {
- /* release int */
- R_DDR &= ~_BV(INTPIN);
- P_PORT &= ~1;
- }
- }
-
- /* exit (after exit_delay) if requested */
- if (global->request_exit && global->exit_delay-- == 0)
- start_application();
- }
- }
-}
+++ /dev/null
-/* vim:ts=4 sts=4 et tw=80
- *
- * fnordlichtmini serial bootloader
- *
- * for additional information please
- * see http://lochraster.org/fnordlichtmini
- *
- * (c) by Alexander Neumann <alexander@bumpern.de>
- * Lars Noschinski <lars@public.noschinski.de>
- *
- * This program is free software: you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 3 as published by
- * the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef __GLOBAL_H
-#define __GLOBAL_H
-
-#include "config.h"
-
-/* configure primary pwm pins (MUST be three successive pins in a port) */
-#define PWM_PORT B
-#define PWM_CHANNELS 3
-#define PWM_CHANNEL_MASK (_BV(PB0) | _BV(PB1) | _BV(PB2))
-#define PWM_SHIFT 0
-
-/* configure INT pin */
-#define REMOTE_INT_PORT D
-#define REMOTE_INT_PIN PD2
-
-/* abbreviations for port, ddr and pin */
-#define P_PORT _OUTPORT(PWM_PORT)
-#define P_DDR _DDRPORT(PWM_PORT)
-#define R_PORT _OUTPORT(REMOTE_INT_PORT)
-#define R_DDR _DDRPORT(REMOTE_INT_PORT)
-#define R_PIN _INPORT(REMOTE_INT_PORT)
-#define INTPIN REMOTE_INT_PIN
-
-/* check if hardware is valid */
-#if defined(HARDWARE_fnordlicht)
- /* specific settings for old fnordlicht hardware */
- #if !defined(PWM_INVERTED)
- #define PWM_INVERTED
- #endif
-#elif defined(HARDWARE_fnordlichtmini)
- /* specific settings for fnordlichtmini hardware */
-
-#else
-#error "unknown HARDWARE platform!"
-#endif
-
-/* turn pwm output pins on and off */
-#ifdef PWM_INVERTED
-#define PWM_PIN_ON(bit) P_PORT &= ~_BV(bit) << (PWM_SHIFT)
-#define PWM_PIN_OFF(bit) P_PORT |= _BV(bit) << (PWM_SHIFT)
-#else
-#define PWM_PIN_ON(bit) P_PORT |= _BV(bit) << (PWM_SHIFT)
-#define PWM_PIN_OFF(bit) P_PORT &= ~_BV(bit) << (PWM_SHIFT)
-#endif
-
-#define PWM_PIN_TOGGLE(bit) P_PORT ^= _BV(bit) << (PWM_SHIFT)
-
-#define PWM_RED 0
-#define PWM_GREEN 1
-#define PWM_BLUE 2
-
-/* wait 100ms before checking INT pin (for delay_loop_2(50000)) */
-#define CONFIG_DELAY F_CPU/4/50000/10
-#define CONFIG_DELAY_LOOP2 50000
-
-#endif
+++ /dev/null
-.extern __init
-.global __vector_default
-.section .vectors.bootloader
-
-/* micro-jumptable, we are using just the reset vector */
-exit:
-__vector_default:
- /* use jmp if available on this architecture */
- #ifdef __AVR_HAVE_JMP_CALL__
- jmp __init
- #else
- rjmp __init
- #endif
+++ /dev/null
-/* vim:ts=4 sts=4 et tw=80
- *
- * fnordlicht firmware
- *
- * for additional information please
- * see http://lochraster.org/fnordlichtmini
- *
- * (c) by Alexander Neumann <alexander@bumpern.de>
- * Lars Noschinski <lars@public.noschinski.de>
- *
- * This program is free software: you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 3 as published by
- * the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef IO_H
-#define IO_H
-
-#include <avr/io.h>
-
-/* cpu specific configuration registers */
-#if defined(__AVR_ATmega8__)
-
-#define _TIMSK_TIMER1 TIMSK
-#define _UCSRB_UART0 UCSRB
-#define _UCSRA_UART0 UCSRA
-#define _UDRIE_UART0 UDRIE
-#define _RXC_UART0 RXC
-#define _TXEN_UART0 TXEN
-#define _RXEN_UART0 RXEN
-#define _RXCIE_UART0 RXCIE
-#define _UBRRH_UART0 UBRRH
-#define _UBRRL_UART0 UBRRL
-#define _UCSRC_UART0 UCSRC
-#define _UCSZ0_UART0 UCSZ0
-#define _UCSZ1_UART0 UCSZ1
-#define _SIG_UART_RECV_UART0 SIG_UART_RECV
-#define _SIG_UART_DATA_UART0 SIG_UART_DATA
-#define _UDR_UART0 UDR
-#define UCSR0A UCSRA
-#define UCSR0C UCSRC
-#define MPCM0 MPCM
-#define UCSZ00 UCSZ0
-#define UCSZ01 UCSZ1
-#define UCSZ02 UCSZ2
-#define UBRR0H UBRRH
-#define UBRR0L UBRRL
-#define UCSR0B UCSRB
-#define RXEN0 RXEN
-#define TXEN0 TXEN
-#define RXC0 RXC
-#define RXB80 RXB8
-#define UDR0 UDR
-
-#elif defined(__AVR_ATmega88__) || defined(__AVR_ATmega168__)
-
-#define _TIMSK_TIMER1 TIMSK1
-#define _UCSRA_UART0 UCSR0A
-#define _UCSRB_UART0 UCSR0B
-#define _UDRIE_UART0 UDRIE0
-#define _RXC_UART0 RXC0
-#define _TXEN_UART0 TXEN0
-#define _RXEN_UART0 RXEN0
-#define _RXCIE_UART0 RXCIE0
-#define _UBRRH_UART0 UBRR0H
-#define _UBRRL_UART0 UBRR0L
-#define _UCSRC_UART0 UCSR0C
-#define _UCSZ0_UART0 UCSZ00
-#define _UCSZ1_UART0 UCSZ01
-#define _SIG_UART_RECV_UART0 SIG_USART_RECV
-#define _SIG_UART_DATA_UART0 SIG_USART_DATA
-#define _UDR_UART0 UDR0
-#endif
-
-
-#endif
+++ /dev/null
-/* Default linker script, for normal executables */
-OUTPUT_FORMAT("elf32-avr","elf32-avr","elf32-avr")
-OUTPUT_ARCH(avr:4)
-MEMORY
-{
- text (rx) : ORIGIN = 0, LENGTH = 8K
- data (rw!x) : ORIGIN = 0x800060, LENGTH = 0xffa0
- eeprom (rw!x) : ORIGIN = 0x810000, LENGTH = 64K
- fuse (rw!x) : ORIGIN = 0x820000, LENGTH = 1K
- lock (rw!x) : ORIGIN = 0x830000, LENGTH = 1K
- signature (rw!x) : ORIGIN = 0x840000, LENGTH = 1K
-}
-SECTIONS
-{
- /* Read-only sections, merged into text segment: */
- .hash : { *(.hash) }
- .dynsym : { *(.dynsym) }
- .dynstr : { *(.dynstr) }
- .gnu.version : { *(.gnu.version) }
- .gnu.version_d : { *(.gnu.version_d) }
- .gnu.version_r : { *(.gnu.version_r) }
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- {
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- .rela.rodata :
- {
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- }
- .rel.data :
- {
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- .rela.data :
- {
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- .rel.ctors : { *(.rel.ctors) }
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- .rel.bss : { *(.rel.bss) }
- .rela.bss : { *(.rela.bss) }
- .rel.plt : { *(.rel.plt) }
- .rela.plt : { *(.rela.plt) }
-
- /* discard default interrupt jumptable */
- /DISCARD/ : { *(.vectors) }
-
- /* Internal text space or external memory. */
- .text :
- {
- *(.vectors.bootloader)
- KEEP(*(.vectors.bootloader))
- /* For data that needs to reside in the lower 64k of progmem. */
- *(.progmem.gcc*)
- *(.progmem*)
- . = ALIGN(2);
- __trampolines_start = . ;
- /* The jump trampolines for the 16-bit limited relocs will reside here. */
- *(.trampolines)
- *(.trampolines*)
- __trampolines_end = . ;
- /* For future tablejump instruction arrays for 3 byte pc devices.
- We don't relax jump/call instructions within these sections. */
- *(.jumptables)
- *(.jumptables*)
- /* For code that needs to reside in the lower 128k progmem. */
- *(.lowtext)
- *(.lowtext*)
- __ctors_start = . ;
- *(.ctors)
- __ctors_end = . ;
- __dtors_start = . ;
- *(.dtors)
- __dtors_end = . ;
- KEEP(SORT(*)(.ctors))
- KEEP(SORT(*)(.dtors))
- /* From this point on, we don't bother about wether the insns are
- below or above the 16 bits boundary. */
- *(.init0) /* Start here after reset. */
- KEEP (*(.init0))
- *(.init1)
- KEEP (*(.init1))
- *(.init2) /* Clear __zero_reg__, set up stack pointer. */
- KEEP (*(.init2))
- *(.init3)
- KEEP (*(.init3))
- *(.init4) /* Initialize data and BSS. */
- KEEP (*(.init4))
- *(.init5)
- KEEP (*(.init5))
- *(.init6) /* C++ constructors. */
- KEEP (*(.init6))
- *(.init7)
- KEEP (*(.init7))
- *(.init8)
- KEEP (*(.init8))
- *(.init9) /* Call main(). */
- KEEP (*(.init9))
- *(.text)
- . = ALIGN(2);
- *(.text.*)
- . = ALIGN(2);
- *(.fini9) /* _exit() starts here. */
- KEEP (*(.fini9))
- *(.fini8)
- KEEP (*(.fini8))
- *(.fini7)
- KEEP (*(.fini7))
- *(.fini6) /* C++ destructors. */
- KEEP (*(.fini6))
- *(.fini5)
- KEEP (*(.fini5))
- *(.fini4)
- KEEP (*(.fini4))
- *(.fini3)
- KEEP (*(.fini3))
- *(.fini2)
- KEEP (*(.fini2))
- *(.fini1)
- KEEP (*(.fini1))
- *(.fini0) /* Infinite loop after program termination. */
- KEEP (*(.fini0))
- _etext = . ;
- } > text
- .data : AT (ADDR (.text) + SIZEOF (.text))
- {
- PROVIDE (__data_start = .) ;
- *(.data)
- *(.data*)
- *(.rodata) /* We need to include .rodata here if gcc is used */
- *(.rodata*) /* with -fdata-sections. */
- *(.gnu.linkonce.d*)
- . = ALIGN(2);
- _edata = . ;
- PROVIDE (__data_end = .) ;
- } > data
- .bss : AT (ADDR (.bss))
- {
- PROVIDE (__bss_start = .) ;
- *(.bss)
- *(.bss*)
- *(COMMON)
- PROVIDE (__bss_end = .) ;
- } > data
- __data_load_start = LOADADDR(.data);
- __data_load_end = __data_load_start + SIZEOF(.data);
- /* Global data not cleared after reset. */
- .noinit :
- {
- PROVIDE (__noinit_start = .) ;
- *(.noinit*)
- PROVIDE (__noinit_end = .) ;
- _end = . ;
- PROVIDE (__heap_start = .) ;
- } > data
- .eeprom :
- {
- *(.eeprom*)
- __eeprom_end = . ;
- } > eeprom
- .fuse :
- {
- KEEP(*(.fuse))
- KEEP(*(.lfuse))
- KEEP(*(.hfuse))
- KEEP(*(.efuse))
- } > fuse
- .lock :
- {
- KEEP(*(.lock*))
- } > lock
- .signature :
- {
- KEEP(*(.signature*))
- } > signature
- /* Stabs debugging sections. */
- .stab 0 : { *(.stab) }
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- .comment 0 : { *(.comment) }
- /* DWARF debug sections.
- Symbols in the DWARF debugging sections are relative to the beginning
- of the section so we begin them at 0. */
- /* DWARF 1 */
- .debug 0 : { *(.debug) }
- .line 0 : { *(.line) }
- /* GNU DWARF 1 extensions */
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- /* DWARF 1.1 and DWARF 2 */
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- .debug_loc 0 : { *(.debug_loc) }
- .debug_macinfo 0 : { *(.debug_macinfo) }
-}
+++ /dev/null
-/* Default linker script, for normal executables */
-OUTPUT_FORMAT("elf32-avr","elf32-avr","elf32-avr")
-OUTPUT_ARCH(avr:5)
-MEMORY
-{
- text (rx) : ORIGIN = 0, LENGTH = 128K
- data (rw!x) : ORIGIN = 0x800060, LENGTH = 0xffa0
- eeprom (rw!x) : ORIGIN = 0x810000, LENGTH = 64K
- fuse (rw!x) : ORIGIN = 0x820000, LENGTH = 1K
- lock (rw!x) : ORIGIN = 0x830000, LENGTH = 1K
- signature (rw!x) : ORIGIN = 0x840000, LENGTH = 1K
-}
-SECTIONS
-{
- /* Read-only sections, merged into text segment: */
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- .dynsym : { *(.dynsym) }
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- .gnu.version : { *(.gnu.version) }
- .gnu.version_d : { *(.gnu.version_d) }
- .gnu.version_r : { *(.gnu.version_r) }
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- .rel.plt : { *(.rel.plt) }
- .rela.plt : { *(.rela.plt) }
-
- /* discard default interrupt jumptable */
- /DISCARD/ : { *(.vectors) }
-
- /* Internal text space or external memory. */
- .text :
- {
- *(.vectors.bootloader)
- KEEP(*(.vectors.bootloader))
- /* For data that needs to reside in the lower 64k of progmem. */
- *(.progmem.gcc*)
- *(.progmem*)
- . = ALIGN(2);
- __trampolines_start = . ;
- /* The jump trampolines for the 16-bit limited relocs will reside here. */
- *(.trampolines)
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- __trampolines_end = . ;
- /* For future tablejump instruction arrays for 3 byte pc devices.
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- /* For code that needs to reside in the lower 128k progmem. */
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- KEEP (*(.init0))
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+++ /dev/null
-/* vim:ts=4 sts=4 et tw=80
- *
- * fnordlicht firmware
- *
- * for additional information please
- * see http://lochraster.org/fnordlichtmini
- *
- * (c) by Alexander Neumann <alexander@bumpern.de>
- * Lars Noschinski <lars@public.noschinski.de>
- *
- * This program is free software: you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 3 as published by
- * the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef UART_H
-#define UART_H
-
-#include <stdbool.h>
-
-
-/* define uart mode (8N1) */
-#if defined(__AVR_ATmega8__)
-/* in atmega8, we need a special switching bit
- * for addressing UCSRC */
-#define UART_UCSRC _BV(URSEL) | _BV(UCSZ0) | _BV(UCSZ1)
-
-#elif defined(__AVR_ATmega88__) || defined(__AVR_ATmega168__)
-/* in atmega88, this isn't needed any more */
-#define UART_UCSRC _BV(_UCSZ0_UART0) | _BV(_UCSZ1_UART0)
-#endif
-
-
-static inline void uart_init(void)
-{
- #define BAUD CONFIG_SERIAL_BAUDRATE
- #include <util/setbaud.h>
- /* set baud rate */
- _UBRRH_UART0 = UBRRH_VALUE;
- _UBRRL_UART0 = UBRRL_VALUE;
-
- #if USE_2X
- _UCSRA_UART0 |= (1 << _U2X_UART0);
- #endif
-
- /* set mode */
- _UCSRC_UART0 = UART_UCSRC;
-
- /* enable transmitter and receiver */
- _UCSRB_UART0 = _BV(_TXEN_UART0) | _BV(_RXEN_UART0);
-}
-
-static inline bool uart_receive_complete(void)
-{
- return _UCSRA_UART0 & _BV(_RXC_UART0);
-}
-
-static inline bool uart_send_complete(void)
-{
- return _BV(_UDRE_UART0) & _UCSRA_UART0;
-}
-
-static inline uint8_t uart_getc(void)
-{
- return _UDR_UART0;
-}
-
-static void uart_putc(uint8_t data)
-{
- while(!(_BV(_UDRE_UART0) & _UCSRA_UART0));
- UDR0 = data;
-}
-
-#endif
+++ /dev/null
-####################################################
-# fnordlicht-ng Makefile
-####################################################
-
-# ATTENTION:
-# Any of these variables are overridden with the values from the file
-# "config.mk", you can tune your settings there. The file "config.mk" is not
-# under version control.
-# Just run 'make' to create a "config.mk" with the default settings
-
-# controller
-MCU = atmega168
-
-# frequency
-F_CPU = 16000000UL
-
-# main application name (without .hex)
-# eg 'test' when the main function is defined in 'test.c'
-TARGET = fcontrol
-
-# c sourcecode files
-# eg. 'test.c foo.c foobar/baz.c'
-SRC = $(wildcard *.c) usbdrv/usbdrv.c
-
-# asm sourcecode files
-# eg. 'interrupts.S foobar/another.S'
-ASRC = $(wildcard *.S) usbdrv/usbdrvasm.S
-
-# headers which should be considered when recompiling
-# eg. 'global.h foobar/important.h'
-HEADERS = $(wildcard *.h)
-
-# include directories (used for both, c and asm)
-# eg '. usbdrv/'
-INCLUDES = . usbdrv/
-
-
-# use more debug-flags when compiling
-DEBUG = 0
-
-# default baudrate
-CONFIG_SERIAL_BAUDRATE = 19200
-
-# avrdude programmer protocol
-PROG = usbasp
-# avrdude programmer device
-DEV = usb
-# further flags for avrdude
-AVRDUDE_FLAGS =
-
-CFLAGS += -DCONFIG_SERIAL_BAUDRATE=$(CONFIG_SERIAL_BAUDRATE)
-
-# use a custom linker script
-LDFLAGS += -L$(CURDIR)/ldscripts
-
-.PHONY: all
-
-# main make target (moved up here because of the config.mk target)
-all: $(TARGET).hex
-
-# create config.mk (if it does not exist yet)
-$(CURDIR)/config.mk:
- @$(CP) config.mk.template config.mk
- @echo "===================================================="
- @echo "created file $@"
- @echo "please tune your settings there, then run 'make' again"
- @echo "===================================================="
- @exit 1
-
-# include config file
--include $(CURDIR)/config.mk
-
-####################################################
-# 'make' configuration
-####################################################
-CC = avr-gcc
-OBJCOPY = avr-objcopy
-OBJDUMP = avr-objdump
-AS = avr-as
-SIZE = avr-size
-CP = cp
-RM = rm -f
-RMDIR = rm -rf
-MKDIR = mkdir
-AVRDUDE = avrdude
-
-# flags for automatic dependency handling
-DEPFLAGS = -MD -MP -MF .dep/$(@F).d
-
-# flags for the compiler (for .c files)
-CFLAGS += -g -Os -mmcu=$(MCU) -DF_CPU=$(F_CPU) -std=gnu99 -fshort-enums $(DEPFLAGS)
-CFLAGS += $(addprefix -I,$(INCLUDES))
-CFLAGS += -fno-split-wide-types
-CFLAGS += --param inline-call-cost=2 -finline-limit=3 -fno-inline-small-functions
-#CFLAGS += -Wl,--relax
-
-# flags for the compiler (for .S files)
-ASFLAGS += -g -mmcu=$(MCU) -DF_CPU=$(F_CPU) -x assembler-with-cpp $(DEPFLAGS)
-ASFLAGS += $(addprefix -I,$(INCLUDES))
-
-# flags for the linker
-LDFLAGS += -mmcu=$(MCU)
-
-# fill in object files
-OBJECTS += $(SRC:.c=.o)
-OBJECTS += $(ASRC:.S=.o)
-
-# include more debug flags, if $(DEBUG) is 1
-ifeq ($(DEBUG),1)
- CFLAGS += -Wall -W -Wchar-subscripts -Wmissing-prototypes
- CFLAGS += -Wmissing-declarations -Wredundant-decls
- CFLAGS += -Wstrict-prototypes -Wshadow -Wbad-function-cast
- CFLAGS += -Winline -Wpointer-arith -Wsign-compare
- CFLAGS += -Wunreachable-code -Wdisabled-optimization
- CFLAGS += -Wcast-align -Wwrite-strings -Wnested-externs -Wundef
- CFLAGS += -Wa,-adhlns=$(basename $@).lst
- CFLAGS += -DCONFIG_DEBUG=1
-endif
-
-####################################################
-# avrdude configuration
-####################################################
-ifeq ($(MCU),atmega8)
- AVRDUDE_MCU=m8
-endif
-ifeq ($(MCU),atmega48)
- AVRDUDE_MCU=m48
-endif
-ifeq ($(MCU),atmega88)
- AVRDUDE_MCU=m88
-endif
-ifeq ($(MCU),atmega168)
- AVRDUDE_MCU=m168
-endif
-
-AVRDUDE_FLAGS += -p $(AVRDUDE_MCU)
-
-####################################################
-# make targets
-####################################################
-
-.PHONY: clean distclean avrdude-terminal
-
-$(TARGET).elf: $(OBJECTS)
- $(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJECTS)
-
-# all objects (.o files) and config.mk
-$(OBJECTS): $(HEADERS) config.mk
-
-# remove all compiled files
-clean:
- $(RM) $(foreach ext,elf hex eep.hex map,$(TARGET).$(ext)) \
- $(foreach file,$(patsubst %.o,%,$(OBJECTS)),$(foreach ext,o lst lss,$(file).$(ext)))
-
-# additionally remove the dependency makefile and config.mk
-distclean: clean
- $(RMDIR) .dep
- $(RM) config.mk
-
-# avrdude-related targets
-install program: program-$(TARGET)
-
-avrdude-terminal:
- $(AVRDUDE) $(AVRDUDE_FLAGS) -c $(PROG) -P $(DEV) -t
-
-program-%: %.hex
- $(AVRDUDE) $(AVRDUDE_FLAGS) -c $(PROG) -P $(DEV) -U flash:w:$<
-
-program-eeprom-%: %.eep.hex
- $(AVRDUDE) $(AVRDUDE_FLAGS) -c $(PROG) -P $(DEV) -U eeprom:w:$<
-
-# special programming targets
-%.hex: %.elf
- $(OBJCOPY) -O ihex -R .eeprom $< $@
- @echo "===================================================="
- @echo "$@ compiled for fnordlicht-controller"
- @echo "using controller $(MCU)"
- @echo -n "size for $< is "
- @$(SIZE) -A $@ | grep '\.sec1' | tr -s ' ' | cut -d" " -f2
- @echo "===================================================="
-
-%.eep.hex: %.elf
- $(OBJCOPY) --set-section-flags=.eeprom="alloc,load" --change-section-lma .eeprom=0 -O ihex -j .eeprom $< $@
-
-%.lss: %.elf
- $(OBJDUMP) -h -S $< > $@
-
-.PHONY: fuses-atmega8-fnordlichtmini-with-bootloader fuses-lock
-
-fuses-atmega8-fnordlichtmini-with-bootloader:
- $(AVRDUDE) $(AVRDUDE_FLAGS) -c $(PROG) -P $(DEV) -U lfuse:w:0x3f:m -U hfuse:w:0xda:m
-
-fuses-atmega8-fnordlichtmini-without-bootloader:
- $(AVRDUDE) $(AVRDUDE_FLAGS) -c $(PROG) -P $(DEV) -U lfuse:w:0x3f:m -U hfuse:w:0xd9:m
-
-fuses-lock:
- $(AVRDUDE) $(AVRDUDE_FLAGS) -c $(PROG) -P $(DEV) -U lock:w:0x2f:m
-
--include $(shell $(MKDIR) .dep 2>/dev/null) $(wildcard .dep/*)
+++ /dev/null
-/* vim:ts=4 sts=4 et tw=80
- *
- * fnordlicht firmware
- *
- * for additional information please
- * see http://lochraster.org/fnordlichtmini
- *
- * (c) by Alexander Neumann <alexander@bumpern.de>
- * Lars Noschinski <lars@public.noschinski.de>
- *
- * This program is free software: you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 3 as published by
- * the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-/*
- * ATTENTION:
- * This file is under version control. Please use the file "config.mk" (which
- * is not under version control) for configuring the fnordlicht firmware.
- * A file with all the default values will be created by running 'make' the
- * first time.
- */
-
-#ifndef _FNORDLICHT_CONFIG_H
-#define _FNORDLICHT_CONFIG_H
-
-/* debug defines */
-#ifndef CONFIG_DEBUG
-#define CONFIG_DEBUG 0
-#endif
-
-#endif /* _FNORDLICHT_CONFIG_H */
+++ /dev/null
-# Put your own config here!
-#
-# This file is not under version control, and your settings
-# will not be modified when upgrading the repository
-
-
-###################################################################
-# PROGRAMMER
-#
-# avrdude programmer protocol
-#PROG = usbasp
-
-# avrdude programmer device
-#DEV = usb
-
-# further flags for avrdude
-#AVRDUDE_FLAGS =
-
-
-###################################################################
-# controller
-#
-# possible values:
-# - atmega168
-#
-#MCU = atmega168
-
-# frequency
-#F_CPU = 16000000UL
-
-# use more debug-flags when compiling
-#DEBUG = 1
-
-###################################################################
-# FIRMWARE CONFIGURATION
-#
-
-# default baudrate
-#CONFIG_SERIAL_BAUDRATE = 19200
+++ /dev/null
-/* vim:ts=4 sts=4 et tw=80
- *
- * fnordlicht firmware
- *
- * for additional information please
- * see http://lochraster.org/fnordlichtmini
- *
- * (c) by Alexander Neumann <alexander@bumpern.de>
- * Lars Noschinski <lars@public.noschinski.de>
- *
- * This program is free software: you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 3 as published by
- * the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-/* includes */
-#include "globals.h"
-#include "../common/io.h"
-
-#include <stdint.h>
-#include <avr/interrupt.h>
-#include <avr/pgmspace.h>
-#include <avr/wdt.h>
-
-#include "../common/common.h"
-#include "usb.h"
-#include "timer.h"
-#include "uart.h"
-#include "ui.h"
-#include "ir.h"
-
-/* NEVER CALL DIRECTLY! */
-void disable_watchdog(void) \
- __attribute__((naked)) \
- __attribute__((section(".init3")));
-void disable_watchdog(void)
-{
- MCUSR = 0;
- wdt_disable();
-}
-
-/** main function
- */
-int main(void)
-{
- usb_init();
- timer_init();
- uart_init();
- ui_init();
- ir_init();
- ir_set_mode(IR_RECEIVE);
-
- /* enable interrupts globally */
- sei();
-
- usb_enable();
-
- ui_blink(0x03, 0);
-
- while (1) {
- usb_poll();
- ui_poll();
- ir_poll();
- }
-}
+++ /dev/null
-/* vim:ts=4 sts=4 et tw=80
- *
- * fnordlicht firmware
- *
- * for additional information please
- * see http://lochraster.org/fnordlichtmini
- *
- * (c) by Alexander Neumann <alexander@bumpern.de>
- * Lars Noschinski <lars@public.noschinski.de>
- *
- * This program is free software: you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 3 as published by
- * the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "fifo.h"
-
-void fifo_init(fifo_t *f)
-{
- f->read = 0;
- f->write = 0;
-}
-
-void fifo_enqueue(fifo_t *f, fifo_content_t data)
-{
- f->buffer[f->write] = data;
- f->write = (f->write + 1) % CONFIG_FIFO_SIZE;
-}
-
-fifo_content_t fifo_dequeue(fifo_t *f)
-{
- fifo_content_t data = f->buffer[f->read];
- f->read = (f->read + 1) % CONFIG_FIFO_SIZE;
- return data;
-}
-
-fifo_size_t fifo_fill(fifo_t *f)
-{
- if (f->write >= f->read)
- return f->write - f->read;
- else
- return CONFIG_FIFO_SIZE - (f->read - f->write);
-}
-
-bool fifo_empty(fifo_t *f)
-{
- return f->read == f->write;
-}
-
-bool fifo_full(fifo_t *f)
-{
- return fifo_fill(f) == CONFIG_FIFO_SIZE-1;
-}
+++ /dev/null
-/* vim:ts=4 sts=4 et tw=80
- *
- * fnordlicht firmware
- *
- * for additional information please
- * see http://lochraster.org/fnordlichtmini
- *
- * (c) by Alexander Neumann <alexander@bumpern.de>
- * Lars Noschinski <lars@public.noschinski.de>
- *
- * This program is free software: you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 3 as published by
- * the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef __FIFO_H
-#define __FIFO_H
-
-#include <stdint.h>
-#include <stdbool.h>
-#include "globals.h"
-
-typedef uint8_t fifo_content_t;
-typedef uint8_t fifo_size_t;
-
-typedef struct
-{
- fifo_size_t read;
- fifo_size_t write;
- fifo_content_t buffer[CONFIG_FIFO_SIZE];
-} fifo_t;
-
-void fifo_init(fifo_t *f);
-void fifo_enqueue(fifo_t *f, fifo_content_t data);
-fifo_content_t fifo_dequeue(fifo_t *f);
-fifo_size_t fifo_fill(fifo_t *f);
-bool fifo_empty(fifo_t *f);
-bool fifo_full(fifo_t *f);
-
-#endif
+++ /dev/null
-/* vim:ts=4 sts=4 et tw=80
- *
- * fnordlicht firmware
- *
- * for additional information please
- * see http://lochraster.org/fnordlichtmini
- *
- * (c) by Alexander Neumann <alexander@bumpern.de>
- * Lars Noschinski <lars@public.noschinski.de>
- *
- * This program is free software: you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 3 as published by
- * the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef _FNORDLICHT_GLOBALS_H
-#define _FNORDLICHT_GLOBALS_H
-
-#include <avr/version.h>
-#include "config.h"
-#include "../common/common.h"
-
-/* check for avr-libc version */
-#if __AVR_LIBC_VERSION__ < 10600UL
-#error "newer libc version (>= 1.6.0) needed!"
-#endif
-
-/* check if cpu speed is defined */
-#ifndef F_CPU
-#error "please define F_CPU! (see Makefile)"
-#endif
-
-/* check if this cpu is supported */
-#if !(defined(__AVR_ATmega8__) || defined(__AVR_ATmega88__) || defined(__AVR_ATmega168__))
-#error "this cpu is not supported yet!"
-#endif
-
-/* fifo size should be a power of 2 and below 128 */
-#define CONFIG_FIFO_SIZE 64
-
-/* serial communication is required */
-#define CONFIG_SERIAL 1
-
-/* leds */
-#define LED_PORTNAME B
-#define LED1_PIN 2
-#define LED2_PIN 1
-
-/* buttons */
-#define BTN_PORTNAME C
-#define BTN1_PIN 5
-#define BTN2_PIN 4
-
-/* infrared receiver */
-#define IR_PORTNAME C
-#define IR_PIN 1
-#define IR_INTNUM 9 /* PC1 is PCINT9 */
-
-/* convenient naming */
-#define LED_PORT _OUTPORT(LED_PORTNAME)
-#define LED_DDR _DDRPORT(LED_PORTNAME)
-
-#define BTN_PORT _OUTPORT(BTN_PORTNAME)
-#define BTN_DDR _DDRPORT(BTN_PORTNAME)
-#define BTN_PIN _INPORT(BTN_PORTNAME)
-
-#endif /* _FNORDLICHT_CONFIG_H */
+++ /dev/null
-/*
- * ox - infrared to usb keyboard/mouse adapter
- *
- * by Alexander Neumann <alexander@lochraster.org>
- *
- * inspired by InfraHID by Alex Badea,
- * see http://vamposdecampos.googlepages.com/infrahid.html
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * For more information on the GPL, please go to:
- * http://www.gnu.org/copyleft/gpl.html
- */
-
-#include "ir-cluster.h"
-
-/* return the position of the (first) minimum value within data[],
- * considering only values at even positions */
-static uint8_t minimum(uint16_t data[], uint8_t len)
-{
- uint8_t min = 0;
-
- for (uint8_t i = 0; i < 2*len; i += 2) {
- if (data[i] < data[min])
- min = i;
- }
-
- return min;
-}
-
-/* search next bigger value (starting at data[from]) within data[], just
- * considering the even values, return -1 on error (no bigger value found) */
-static int8_t next(uint16_t data[], uint8_t len, uint8_t from)
-{
- len *= 2;
-
- uint16_t old = data[from];
-
- /* test if the same value appears again within data[] after from */
- for (uint8_t i = from+2; i < len; i += 2) {
- if (data[i] == old)
- /* found the same value again, at pos i */
- return i;
- }
-
- /* else search for the next bigger value */
- int16_t pos = -1;
- for (uint8_t i = 0; i < len; i += 2) {
-
- /* if the current value is lower than the old value, try next */
- if (data[i] <= old)
- continue;
-
- /* if we haven't found a bigger value yet, or if the current value
- * is smaller than the value we looked at before,
- * consider the current position as the next value */
- if (pos < 0 || data[i] < data[pos])
- pos = i;
- }
-
- return pos;
-}
-
-/* search for (one-dimensional) clusters within data[],
- * consider only values at even positions */
-uint8_t ir_cluster(uint16_t data[], uint8_t len, uint16_t cluster[], uint8_t max)
-{
- uint8_t cindex = 0;
-
- /* search minimum within data[] */
- uint8_t pos = minimum(data, len);
-
- /* initialize mean value */
- uint32_t mean = data[pos];
- uint8_t count = 1;
-
- /* iterate over data[], processing the values (at even positions) in
- * ascending order */
- for (uint8_t i = 0; i < len-1; i++) {
-
- /* search position of the next element within data[] */
- uint8_t nextpos = next(data, len, pos);
-
- /* as a shortcut, name values a and b */
- uint16_t a = data[pos];
- uint16_t b = data[nextpos];
-
- /* check if b > 1.5*a */
- a += a/2;
- if (b > a) {
-
- /* reached a step, found a cluster */
- mean /= count;
- cluster[cindex++] = (uint16_t)mean;
-
- /* stop processing since max cluster values is reached */
- if (cindex == max)
- return max;
-
- /* reset mean value */
- mean = 0;
- count = 0;
- }
-
- /* add value to mean */
- mean += b;
- count++;
-
- /* advance position */
- pos = nextpos;
- }
-
- /* if there are some values left in mean, this is the last cluster */
- if (count > 0) {
- mean /= count;
- cluster[cindex++] = (uint16_t)mean;
- }
-
- return cindex;
-}
-
-/* get cluster index belonging to data */
-uint8_t ir_min_cluster(uint16_t data, uint16_t cluster[], uint8_t len)
-{
- uint8_t min = 0;
- uint16_t diff = 0xffff;
-
- /* iterate over possible clusters */
- for (uint8_t i = 0; i < len; i++) {
- uint16_t curdiff;
-
- /* get positive difference */
- if (data < cluster[i])
- curdiff = cluster[i] - data;
- else
- curdiff = data - cluster[i];
-
- /* if difference is lower, remember this cluster */
- if (curdiff < diff) {
- diff = curdiff;
- min = i;
- } else
- /* stop here, since difference is larger than for the last cluster
- * (cluster[] is ordered ascending */
- break;
- }
-
- return min;
-}
+++ /dev/null
-/*
- * ox - infrared to usb keyboard/mouse adapter
- *
- * by Alexander Neumann <alexander@lochraster.org>
- *
- * inspired by InfraHID by Alex Badea,
- * see http://vamposdecampos.googlepages.com/infrahid.html
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * For more information on the GPL, please go to:
- * http://www.gnu.org/copyleft/gpl.html
- */
-
-#include <stdint.h>
-
-#ifndef __IR_CLUSTER_H
-#define __IR_CLUSTER_H
-
-/* search for (one-dimensional) clusters within data[],
- * consider only values at even positions */
-uint8_t ir_cluster(uint16_t data[], uint8_t len, uint16_t cluster[], uint8_t max);
-
-/* get cluster index belonging to data */
-uint8_t ir_min_cluster(uint16_t data, uint16_t cluster[], uint8_t len);
-
-#endif
+++ /dev/null
-/*
- * ox - infrared to usb keyboard/mouse adapter
- *
- * by Alexander Neumann <alexander@lochraster.org>
- *
- * inspired by InfraHID by Alex Badea,
- * see http://vamposdecampos.googlepages.com/infrahid.html
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * For more information on the GPL, please go to:
- * http://www.gnu.org/copyleft/gpl.html
- */
-
-#include <avr/io.h>
-#include <avr/interrupt.h>
-#include <avr/pgmspace.h>
-#include <stdbool.h>
-#include <util/crc16.h>
-#include "config.h"
-#include "globals.h"
-#include "../common/common.h"
-#include "usb.h"
-#include "ir.h"
-#include "ir-cluster.h"
-#include "ui.h"
-
-/* macro magic */
-#define IR_DDR _DDRPORT(IR_PORTNAME)
-#define IR_PORT _OUTPORT(IR_PORTNAME)
-
-#if IR_INTNUM < 8
-# define IR_BANK 0
-# define IR_VECT PCINT0_vect
-#elif IR_INTNUM < 16
-# define IR_BANK 1
-# define IR_VECT PCINT1_vect
-#else
-# define IR_BANK 2
-# define IR_VECT PCINT2_vect
-#endif
-
-#define IR_INT (IR_INTNUM - IR_BANK * 8)
-#define IR_PCIE _PCIE(IR_BANK)
-#define IR_PCIF _PCIF(IR_BANK)
-#define IR_PCMSK _PCMSK(IR_BANK)
-
-/* 8 should be enough for everybody! */
-#define MAX_CLUSTERS 8
-
-/* internal state machine */
-static enum {
- READY = 0,
- LISTEN = 1,
- DONE = 2,
-} state;
-
-volatile struct ir_global_t ir_global;
-
-void ir_init(void)
-{
- /* initialize input pin (with pullup) */
- IR_DDR &= ~_BV(IR_PIN);
- IR_PORT |= _BV(IR_PIN);
-
- /* configure timer1 with prescaler 64 and CTC for measuring ir timings */
- TCCR1B = _BV(CS11) | _BV(CS10) | _BV(WGM12);
- /* configure timer action after 20ms: 20mhz/64/50 */
- OCR1A = F_CPU/50/64;
-}
-
-void ir_set_mode(enum ir_mode_t mode)
-{
- if (ir_global.mode != IR_DISABLED && mode == IR_DISABLED) {
- /* disable pin change interrupt */
- IR_PCMSK &= ~_BV(IR_INT);
- PCICR &= ~_BV(IR_PCIE);
-
- /* clear interrupt flags */
- TIFR1 = TIFR1;
- } else if (ir_global.mode == IR_DISABLED && mode != IR_DISABLED) {
- /* clear interrupt flags */
- TIFR1 = TIFR1;
-
- /* reset variables */
- ir_global.pos = 0;
- state = READY;
-
- /* enable pin change interrupt */
- IR_PCMSK |= _BV(IR_INT);
- PCICR |= _BV(IR_PCIE);
- }
-
- ir_global.mode = mode;
-
- if (mode == IR_DECODE || mode == IR_RAW)
- ui_blink(0, 0x5);
-}
-
-ISR(IR_VECT, ISR_NOBLOCK)
-{
- /* store code */
- uint16_t value = TCNT1;
- TCNT1 = 0;
-
- /* do not store the first 'off' timing value */
- if (state == READY)
- state = LISTEN;
- else if (state == LISTEN) {
- ir_global.time[ir_global.pos++] = value;
-
- /* check if we reached the end of the array */
- if (ir_global.pos == MAX_CODE_LENGTH)
- state = DONE;
- }
-}
-
-void ir_poll(void)
-{
- if (ir_global.mode == IR_DISABLED)
- return;
-
- /* check for timeout */
- if (TIFR1 & _BV(OCF1A)) {
- /* clear interrupt flag */
- TIFR1 = _BV(OCF1A);
-
- /* if ir has been detected, process code, else return to listening */
- if (ir_global.pos > 1) {
- state = DONE;
-
- /* set last timing to zero */
- if (ir_global.pos % 2 == 0)
- ir_global.time[ir_global.pos-1] = 0;
- else
- ir_global.time[ir_global.pos++] = 0;
- } else
- state = READY;
- }
-
- /* if code is complete, process! */
- if (state == DONE) {
- /* compute clusters */
- if (ir_global.mode == IR_RECEIVE || ir_global.mode == IR_DECODE) {
- uint16_t cluster_on[MAX_CLUSTERS];
- uint16_t cluster_off[MAX_CLUSTERS];
-
- uint8_t con = ir_cluster(&ir_global.time[0], ir_global.pos/2, &cluster_on[0], MAX_CLUSTERS);
- uint8_t coff = ir_cluster(&ir_global.time[1], ir_global.pos/2-1, &cluster_off[0], MAX_CLUSTERS);
-
- for (uint8_t i = 0; i < ir_global.pos/2; i++) {
- uint8_t data_on = ir_min_cluster(ir_global.time[2*i], cluster_on, con);
- uint8_t data_off = ir_min_cluster(ir_global.time[2*i+1], cluster_off, coff);
-
- ir_global.time[i] = data_on | (data_off << 8);
- }
-
- ir_global.pos /= 2;
- }
-
- if (ir_global.mode == IR_RECEIVE) {
- uint16_t crc = 0;
- for (uint8_t i = 0; i < ir_global.pos; i++) {
- crc = _crc16_update(crc, LO8(ir_global.time[i]));
- crc = _crc16_update(crc, HI8(ir_global.time[i]));
- }
-
- /* remember code and length */
- ir_global.last = crc;
- ir_global.length = ir_global.pos/2;
-
- /*
- * insert code evaluation here...
- */
-
- ui_blink(0x1, 0);
-
- ir_global.pos = 0;
- state = READY;
- } else {
- ui_blink(0, 0x1);
- ir_set_mode(IR_DISABLED);
- }
- }
-}
+++ /dev/null
-/*
- * ox - infrared to usb keyboard/mouse adapter
- *
- * by Alexander Neumann <alexander@lochraster.org>
- *
- * inspired by InfraHID by Alex Badea,
- * see http://vamposdecampos.googlepages.com/infrahid.html
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * For more information on the GPL, please go to:
- * http://www.gnu.org/copyleft/gpl.html
- */
-
-#ifndef __IR_H
-#define __IR_H
-
-enum ir_mode_t
-{
- IR_DISABLED = 0,
- IR_RAW = 1, /* just receive a code, disable ir afterwards (-> DISABLE) */
- IR_DECODE = 2, /* just receive and decode vaules, disable ir afterwards (-> DISABLE) */
- IR_RECEIVE = 3, /* receive, decode and process codes */
-};
-
-struct ir_global_t
-{
- enum ir_mode_t mode;
- uint16_t last;
- uint8_t length;
-
- #define MAX_CODE_LENGTH 160
- /* internal storage for received code: allocate 160*2 = 320 byte memory for
- * storing a code, this means we can store 80 on/off sequence timings */
-
- uint16_t time[MAX_CODE_LENGTH];
- uint8_t pos;
-};
-
-extern volatile struct ir_global_t ir_global;
-
-void ir_init(void);
-void ir_poll(void);
-
-void ir_set_mode(enum ir_mode_t mode);
-
-#define ir_disable() ir_set_mode(IR_DISABLED);
-#define ir_enable() ir_set_mode(IR_RECEIVE);
-
-#endif
+++ /dev/null
-/* vim:ts=4 sts=4 et tw=80
- *
- * fnordlicht firmware
- *
- * for additional information please
- * see http://lochraster.org/fnordlichtmini
- *
- * (c) by Alexander Neumann <alexander@bumpern.de>
- *
- * This program is free software: you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 3 as published by
- * the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef __REMOTE_PROTO
-#define __REMOTE_PROTO 1
-
-#include "../common/remote-proto.h"
-
-struct remote_msg_start_program_t
-{
- uint8_t address;
- uint8_t cmd;
- uint8_t script;
- uint8_t params[REMOTE_STARTUP_MAX_PARAMSIZE];
-};
-
-#endif
+++ /dev/null
-/*
- * unzap firmware
- *
- * (c) by Alexander Neumann <alexander@lochraster.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * For more information on the GPL, please go to:
- * http://www.gnu.org/copyleft/gpl.html
- */
-
-#include <stdint.h>
-#include <avr/interrupt.h>
-#include "../common/io.h"
-#include "timer.h"
-
-static volatile uint8_t internal_counter;
-
-void timer_init(void)
-{
-#if defined(__AVR_ATmega8__)
- /* initialize timer2, CTC at 10ms, prescaler 1024 */
- OCR2 = F_CPU/1024/100;
- TCCR2 = _BV(WGM21) | _BV(CS22) | _BV(CS21) | _BV(CS20);
- TIMSK |= _BV(OCIE2);
-#elif defined(__AVR_ATmega48__) || defined(__AVR_ATmega88__) || defined(__AVR_ATmega168__)
- /* initialize timer2, CTC at 10ms, prescaler 1024 */
- OCR2A = F_CPU/1024/100;
- TCCR2A = _BV(WGM21);
- TCCR2B = _BV(CS22) | _BV(CS21) | _BV(CS20);
- TIMSK2 = _BV(OCIE2A);
-#else
-#error "unknown controller, unable to initialize timer2"
-#endif
-}
-
-void timer_set(timer_t *t, uint8_t timeout)
-{
- t->current = internal_counter;
- t->timeout = timeout;
-}
-
-bool timer_expired(timer_t *t)
-{
- if (t->timeout == 0)
- return true;
-
- /* attention: this is not correct, if internal_counter is incremented by more than one
- * between two calls of timer_expired()! */
- if (t->current != internal_counter) {
- t->timeout--;
- t->current = internal_counter;
- }
-
- return false;
-}
-
-/* timer interrupt function */
-#if defined(__AVR_ATmega8__)
-ISR(TIMER2_COMP_vect, ISR_NOBLOCK) {
- internal_counter++;
-}
-#elif defined(__AVR_ATmega48__) || defined(__AVR_ATmega88__) || defined(__AVR_ATmega168__)
-ISR(TIMER2_COMPA_vect, ISR_NOBLOCK) {
- internal_counter++;
-}
-#endif
+++ /dev/null
-/*
- * unzap firmware
- *
- * (c) by Alexander Neumann <alexander@lochraster.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * For more information on the GPL, please go to:
- * http://www.gnu.org/copyleft/gpl.html
- */
-
-/* small timer library, uses timer2 */
-
-#ifndef __TIMER_H
-#define __TIMER_H
-
-#include <stdint.h>
-#include <stdbool.h>
-
-/* structures */
-typedef struct {
- uint8_t current;
- uint8_t timeout;
-} timer_t;
-
-/* functions */
-void timer_init(void);
-void timer_set(timer_t *t, uint8_t timeout);
-bool timer_expired(timer_t *t);
-
-#endif
+++ /dev/null
-/* vim:ts=4 sts=4 et tw=80
- *
- * fnordlicht firmware
- *
- * for additional information please
- * see http://lochraster.org/fnordlichtmini
- *
- * (c) by Alexander Neumann <alexander@bumpern.de>
- * Lars Noschinski <lars@public.noschinski.de>
- *
- * This program is free software: you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 3 as published by
- * the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "globals.h"
-
-#if CONFIG_SERIAL
-
-#include "../common/io.h"
-#include <avr/interrupt.h>
-
-#include "globals.h"
-#include "../common/common.h"
-#include "fifo.h"
-#include "uart.h"
-
-/* define uart mode (8N1) */
-#if defined(__AVR_ATmega8__)
-/* in atmega8, we need a special switching bit
- * for addressing UCSRC */
-#define UART_UCSRC _BV(URSEL) | _BV(UCSZ0) | _BV(UCSZ1)
-
-#elif defined(__AVR_ATmega88__) || defined(__AVR_ATmega168__)
-/* in atmega88, this isn't needed any more */
-#define UART_UCSRC _BV(_UCSZ0_UART0) | _BV(_UCSZ1_UART0)
-#endif
-
-/* global variables */
-volatile struct global_uart_t global_uart;
-
-/** output one character */
-void uart_putc(uint8_t data)
-{
- /* store data */
- fifo_enqueue((fifo_t *)&global_uart.tx, data);
-
- /* enable interrupt */
- _UCSRB_UART0 |= _BV(_UDRIE_UART0);
-}
-
-/** init the hardware uart */
-void uart_init(void)
-{
- #define BAUD CONFIG_SERIAL_BAUDRATE
- #include <util/setbaud.h>
-
- /* set baud rate */
- _UBRRH_UART0 = UBRRH_VALUE;
- _UBRRL_UART0 = UBRRL_VALUE;
-
- #if USE_2X
- _UCSRA_UART0 |= (1 << _U2X_UART0);
- #endif
-
- /* set mode */
- _UCSRC_UART0 = UART_UCSRC;
-
- /* enable transmitter, receiver and receiver complete interrupt */
- _UCSRB_UART0 = _BV(_TXEN_UART0) | _BV(_RXEN_UART0) | _BV(_RXCIE_UART0);
-
- /* init fifos */
- fifo_init((fifo_t *)&global_uart.rx);
- fifo_init((fifo_t *)&global_uart.tx);
-}
-
-
-/** interrupts*/
-
-/** uart receive interrupt */
-ISR(_SIG_UART_RECV_UART0)
-{
-
- /* store received data */
- fifo_enqueue((fifo_t *)&global_uart.rx, _UDR_UART0);
-
-}
-
-/** uart data register empty interrupt */
-ISR(_SIG_UART_DATA_UART0)
-{
-
- /* load next byte to transfer */
- _UDR_UART0 = fifo_dequeue((fifo_t *)&global_uart.tx);
-
- /* check if this interrupt is still needed */
- if ( fifo_fill((fifo_t *)&global_uart.tx) == 0) {
- /* disable this interrupt */
- _UCSRB_UART0 &= ~_BV(_UDRIE_UART0);
- }
-
-}
-
-
-#endif
+++ /dev/null
-/* vim:ts=4 sts=4 et tw=80
- *
- * fnordlicht firmware
- *
- * for additional information please
- * see http://lochraster.org/fnordlichtmini
- *
- * (c) by Alexander Neumann <alexander@bumpern.de>
- * Lars Noschinski <lars@public.noschinski.de>
- *
- * This program is free software: you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 3 as published by
- * the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef UART_H
-#define UART_H
-
-#include "globals.h"
-#include "fifo.h"
-#include "../common/io.h"
-
-#if !CONFIG_SERIAL
-
-#define uart_init(...)
-#define uart_putc(...)
-
-#else
-
-/* structs */
-struct global_uart_t {
- fifo_t rx;
- fifo_t tx;
-};
-
-/* global variables */
-extern volatile struct global_uart_t global_uart;
-
-/* prototypes */
-void uart_init(void);
-void uart_putc(uint8_t data);
-
-static inline bool uart_send_complete(void)
-{
- return _BV(_UDRE_UART0) & _UCSRA_UART0;
-}
-
-#endif
-
-#endif
+++ /dev/null
-/*
- * unzap firmware
- *
- * (c) by Alexander Neumann <alexander@lochraster.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * For more information on the GPL, please go to:
- * http://www.gnu.org/copyleft/gpl.html
- */
-
-#include <avr/io.h>
-#include <util/delay.h>
-#include <avr/pgmspace.h>
-#include "globals.h"
-#include "ui.h"
-#include "timer.h"
-#include "uart.h"
-#include "../common/pt/pt.h"
-#include "remote-proto.h"
-
-/* module local variables */
-
-static struct pt btn_thread;
-/* buttons are idle at start (internal pullups active) */
-static uint8_t btn_state = _BV(BTN1_PIN) | _BV(BTN2_PIN);
-static uint8_t btn_last_sample = _BV(BTN1_PIN) | _BV(BTN2_PIN);
-static uint8_t btn_press = 0;
-
-static struct pt blink_thread;
-static uint8_t blink_seq_led1 = 0;
-static uint8_t blink_seq_led2 = 0;
-
-static struct pt input_thread;
-
-/* initialize the button and led pins */
-void ui_init(void)
-{
- /* initialize buttons */
- BTN_DDR &= ~(_BV(BTN1_PIN) | _BV(BTN2_PIN));
- BTN_PORT |= _BV(BTN1_PIN) | _BV(BTN2_PIN);
-
- /* initialize leds */
- LED_DDR |= _BV(LED1_PIN) | _BV(LED2_PIN);
- LED_PORT &= ~(_BV(LED1_PIN) | _BV(LED2_PIN));
-
- /* initialize button sample thread and variables */
- PT_INIT(&btn_thread);
-
- /* initialize blink thread and variables */
- PT_INIT(&blink_thread);
-
- /* initialize input thread */
- PT_INIT(&input_thread);
-}
-
-/* blink out a sequence (LSB first), every bit is 150ms long */
-void ui_blink(uint8_t sequence1, uint8_t sequence2)
-{
- blink_seq_led1 = sequence1;
- blink_seq_led2 = sequence2;
-}
-
-/* check if the current blink sequency is done */
-bool ui_blinking(void)
-{
- return !(blink_seq_led1 || blink_seq_led2);
-}
-
-/* sample buttons, set bit in btn_press if a button has been pressed */
-static PT_THREAD(ui_sample_buttons(struct pt *thread))
-{
- /* make sure no variable is created on the stack */
- static timer_t btn_timer;
-
- PT_BEGIN(thread);
-
- while(1) {
- /* only execute this thread every 10ms */
- timer_set(&btn_timer, 1);
- PT_WAIT_UNTIL(thread, timer_expired(&btn_timer));
-
- /* sample buttons */
- /* ATTENTION: make SURE, btn_sample is NOT created on the stack! */
- register uint8_t btn_sample = BTN_PIN & (_BV(BTN1_PIN) | _BV(BTN2_PIN));
-
- /* mark bits which stayed the same since last sample */
- btn_last_sample ^= ~btn_sample;
-
- /* mark bits which have not changed, but whose state is different */
- btn_last_sample = btn_state ^ (btn_sample & btn_last_sample);
-
- /* if old state is one (button not pressed), new state is zero (button pressed),
- * so set these bits in btn_press */
- btn_press |= btn_last_sample & btn_state;
-
- /* remember new state and last sample */
- btn_state ^= btn_last_sample;
- btn_last_sample = btn_sample;
- }
-
- PT_END(thread);
-}
-
-/* execute led blinking */
-static PT_THREAD(ui_do_blinking(struct pt *thread))
-{
- static timer_t t;
-
- PT_BEGIN(thread);
-
- while (1) {
-
- /* wait until there is something to do */
- PT_WAIT_UNTIL(thread, blink_seq_led1 || blink_seq_led2);
-
- /* turn leds on/off, according to blink sequence */
- if (blink_seq_led1 & 1)
- LED1_ON();
- else
- LED1_OFF();
-
- if (blink_seq_led2 & 1)
- LED2_ON();
- else
- LED2_OFF();
-
- blink_seq_led1 >>= 1;
- blink_seq_led2 >>= 1;
-
- /* wait 150ms */
- timer_set(&t, 15);
- PT_WAIT_UNTIL(thread, timer_expired(&t));
-
- /* turn off leds */
- LED1_OFF();
- LED2_OFF();
-
- }
-
- PT_END(thread);
-}
-
-#define MASTER_PROGRAMS 4
-static PROGMEM uint8_t master_parameters[] = {
- /* colorwheel forward rainbow */
- 0, /* program index */
- 5, /* fade step */
- 1, /* fade delay */
- 0, /* fade sleep */
- 0, 0, /* hue start (little endian) */
- 20, 0, /* hue step (little endian) */
- -1, /* addr add */
- 255, /* saturation */
- 255, /* value */
-
- /* colorwheel all same color */
- 0, /* program index */
- 5, /* fade step */
- 1, /* fade delay */
- 0, /* fade sleep */
- 0, 0, /* hue start (little endian) */
- 20, 0, /* hue step (little endian) */
- 0, /* addr add */
- 255, /* saturation */
- 255, /* value */
-
- /* colorwheel all same color, low saturation */
- 0, /* program index */
- 5, /* fade step */
- 1, /* fade delay */
- 0, /* fade sleep */
- 0, 0, /* hue start (little endian) */
- 20, 0, /* hue step (little endian) */
- 0, /* addr add */
- 150, /* saturation */
- 255, /* value */
-
- /* colorwheel all same color, low saturation */
- 0, /* program index */
- 5, /* fade step */
- 1, /* fade delay */
- 0, /* fade sleep */
- 0, 0, /* hue start (little endian) */
- 120, 0, /* hue step (little endian) */
- 0, /* addr add */
- 255, /* saturation */
- 120, /* value */
-};
-
-void start_program(uint8_t index)
-{
- /* load parameters */
- union {
- uint8_t raw[REMOTE_MSG_LEN];
- struct remote_msg_start_program_t msg;
- } data;
-
- /* reset data structure */
- memset(&data, '\0', REMOTE_MSG_LEN);
-
- data.msg.address = 255;
- data.msg.cmd = REMOTE_CMD_START_PROGRAM;
-
- uint8_t *ptr = &master_parameters[index*REMOTE_STARTUP_MAX_PARAMSIZE];
- data.msg.script = pgm_read_byte(ptr++);
-
- for (uint8_t i = 0; i < REMOTE_STARTUP_MAX_PARAMSIZE; i++) {
- uint8_t d = pgm_read_byte(ptr++);
- data.msg.params[i] = d;
- }
-
- for (uint8_t i = 0; i < REMOTE_MSG_LEN; i++)
- uart_putc(data.raw[i]);
-
- ui_blink(0x01, 0);
-}
-
-static void send_resync(uint8_t addr)
-{
- for (uint8_t i = 0; i < REMOTE_SYNC_LEN; i++)
- uart_putc(REMOTE_CMD_RESYNC);
- uart_putc(addr);
-}
-
-static void send_stop(uint8_t addr)
-{
- /* load parameters */
- union {
- uint8_t raw[REMOTE_MSG_LEN];
- struct remote_msg_t msg;
- } data;
-
- data.msg.cmd = REMOTE_CMD_STOP;
- data.msg.address = addr;
- data.msg.data[0] = 1;
-
- for (uint8_t i = 0; i < REMOTE_MSG_LEN; i++)
- uart_putc(data.raw[i]);
-}
-
-/* parse input */
-static PT_THREAD(ui_input(struct pt*thread))
-{
- static timer_t t;
- static uint8_t option_set;
- static uint8_t current_program;
-
- PT_BEGIN(thread);
-
- current_program = 0;
-
- while(1) {
-
- if (btn_press & _BV(BTN1_PIN)) {
- PT_WAIT_UNTIL(thread, fifo_empty(&global_uart.tx));
- send_resync(0);
- PT_WAIT_UNTIL(thread, fifo_empty(&global_uart.tx));
- send_stop(255);
- PT_WAIT_UNTIL(thread, fifo_empty(&global_uart.tx));
- start_program(current_program);
- current_program = (current_program+1) % MASTER_PROGRAMS;
- }
-
- if (btn_press & _BV(BTN2_PIN)) {
- //uart_putc('2');
- }
-
- btn_press = 0;
-
- PT_YIELD(thread);
- }
-
- PT_END(thread);
-}
-
-/* poll for user actions */
-void ui_poll(void)
-{
- /* sample buttons */
- PT_SCHEDULE(ui_sample_buttons(&btn_thread));
-
- /* do blinking */
- PT_SCHEDULE(ui_do_blinking(&blink_thread));
-
- /* process input */
- PT_SCHEDULE(ui_input(&input_thread));
-}
+++ /dev/null
-/*
- * unzap firmware
- *
- * (c) by Alexander Neumann <alexander@lochraster.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * For more information on the GPL, please go to:
- * http://www.gnu.org/copyleft/gpl.html
- */
-
-#ifndef __UI_H
-#define __UI_H
-
-#include <stdint.h>
-#include <stdbool.h>
-
-/* helper macros */
-#define LED1_ON() LED_PORT |= _BV(LED1_PIN)
-#define LED1_OFF() LED_PORT &= ~_BV(LED1_PIN)
-#define LED1_TOGGLE() LED_PORT ^= _BV(LED1_PIN)
-#define LED2_ON() LED_PORT |= _BV(LED2_PIN)
-#define LED2_OFF() LED_PORT &= ~_BV(LED2_PIN)
-#define LED2_TOGGLE() LED_PORT ^= _BV(LED2_PIN)
-
-/* initialize the button and led pins */
-void ui_init(void);
-
-/* blink out a sequence (LSB first), every bit is 150ms long */
-void ui_blink(uint8_t sequence1, uint8_t sequence2);
-
-/* check if the current blink sequency is done */
-bool ui_blinking(void);
-
-/* poll for user actions */
-void ui_poll(void);
-
-#endif
+++ /dev/null
-/* vim:ts=4 sts=4 et tw=80
- *
- * fnordlicht firmware
- *
- * for additional information please
- * see http://lochraster.org/fnordlichtmini
- *
- * (c) by Alexander Neumann <alexander@bumpern.de>
- *
- * This program is free software: you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 3 as published by
- * the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-/* includes */
-#include "globals.h"
-#include "../common/io.h"
-
-#include <stdint.h>
-#include <stdbool.h>
-
-#include "../common/common.h"
-#include "usbdrv/usbdrv.h"
-#include "timer.h"
-#include "uart.h"
-#include "ir.h"
-
-static bool usb_status;
-
- /* supply custom usbDeviceConnect() and usbDeviceDisconnect() macros
- * which turn the interrupt on and off at the right times,
- * and prevent the execution of an interrupt while the pullup resistor
- * is switched off */
-#ifdef USB_CFG_PULLUP_IOPORTNAME
-#undef usbDeviceConnect
-#define usbDeviceConnect() do { \
- USB_PULLUP_DDR |= (1<<USB_CFG_PULLUP_BIT); \
- USB_PULLUP_OUT |= (1<<USB_CFG_PULLUP_BIT); \
- USB_INTR_ENABLE |= (1 << USB_INTR_ENABLE_BIT); \
- } while(0);
-#undef usbDeviceDisconnect
-#define usbDeviceDisconnect() do { \
- USB_INTR_ENABLE &= ~(1 << USB_INTR_ENABLE_BIT); \
- USB_PULLUP_DDR &= ~(1<<USB_CFG_PULLUP_BIT); \
- USB_PULLUP_OUT &= ~(1<<USB_CFG_PULLUP_BIT); \
- } while(0);
-#endif
-
-#define USBRQ_SEND 1
-#define USBRQ_IR_STATE 2
-#define USBRQ_IR_READ 3
-
-struct usb_state_t {
- enum {
- USB_STATE_IDLE = 0,
- USB_STATE_SEND = 1,
- } state;
-
- usbMsgLen_t bytes_remaining;
-};
-
-struct usb_state_t usb;
-
-USB_PUBLIC usbMsgLen_t usbFunctionSetup(uchar data[8])
-{
- usbRequest_t *req = (void *)data;
- usbMsgLen_t len = 0;
- static uint8_t buf[8];
-
- /* set global data pointer to local buffer */
- usbMsgPtr = buf;
-
- if (req->bRequest == USBRQ_SEND && req->wLength.word > 0) {
- usb.state = USB_STATE_SEND;
- if (req->wLength.word < 256) {
- usb.bytes_remaining = req->wLength.bytes[0];
- return USB_NO_MSG;
- } else {
- /* too long */
- buf[0] = 1;
- len = 1;
- }
- } else if (req->bRequest == USBRQ_IR_STATE) {
- /* read or set state? */
- if (req->bmRequestType & USBRQ_DIR_MASK) {
- /* read */
- buf[0] = ir_global.mode;
- len = 1;
- } else {
- /* write */
- uint8_t new_state = req->wValue.bytes[0];
- if (new_state <= IR_RECEIVE)
- ir_set_mode(new_state);
- }
- } else if (req->bRequest == USBRQ_IR_READ) {
- if (ir_global.mode == IR_DISABLED) {
- usbMsgPtr = (void *)ir_global.time;
- return 2*ir_global.pos;
- }
- }
-
- return len;
-}
-
-uchar usbFunctionWrite(uchar *data, uchar len)
-{
- if (len > usb.bytes_remaining)
- len = usb.bytes_remaining;
-
- usb.bytes_remaining -= len;
-
- while (len--) {
- /* ugly hack: busy wait until the fifo is ready for another byte... */
- while (fifo_full(&global_uart.tx));
- uart_putc(*data++);
- }
-
- if (usb.bytes_remaining == 0) {
- return true;
- usb.state == USB_STATE_IDLE;
- } else
- return len;
-}
-
-void usb_init(void)
-{
- usbInit();
-}
-
-void usb_enable(void)
-{
- usbDeviceConnect();
- usb_status = true;
-}
-
-void usb_disable(void)
-{
- usbDeviceDisconnect();
- usb_status = false;
-}
-
-bool usb_enabled(void)
-{
- return usb_status;
-}
-
-void usb_poll(void)
-{
- if (usb_status)
- usbPoll();
-}
+++ /dev/null
-/* vim:ts=4 sts=4 et tw=80
- *
- * fnordlicht firmware
- *
- * for additional information please
- * see http://lochraster.org/fnordlichtmini
- *
- * (c) by Alexander Neumann <alexander@bumpern.de>
- *
- * This program is free software: you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 3 as published by
- * the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef __USB_H
-#define __USB_H
-
-#include <stdint.h>
-#include <stdbool.h>
-
-void usb_init(void);
-void usb_poll(void);
-void usb_enable(void);
-void usb_disable(void);
-bool usb_enabled(void);
-
-#endif
+++ /dev/null
-/* Name: usbconfig.h
- * Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
- * Author: Christian Starkjohann
- * Creation Date: 2005-04-01
- * Tabsize: 4
- * Copyright: (c) 2005 by OBJECTIVE DEVELOPMENT Software GmbH
- * License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
- * This Revision: $Id: usbconfig-prototype.h 767 2009-08-22 11:39:22Z cs $
- */
-
-#ifndef __usbconfig_h_included__
-#define __usbconfig_h_included__
-
-/*
-General Description:
-This file is an example configuration (with inline documentation) for the USB
-driver. It configures V-USB for USB D+ connected to Port D bit 2 (which is
-also hardware interrupt 0 on many devices) and USB D- to Port D bit 4. You may
-wire the lines to any other port, as long as D+ is also wired to INT0 (or any
-other hardware interrupt, as long as it is the highest level interrupt, see
-section at the end of this file).
-+ To create your own usbconfig.h file, copy this file to your project's
-+ firmware source directory) and rename it to "usbconfig.h".
-+ Then edit it accordingly.
-*/
-
-/* ---------------------------- Hardware Config ---------------------------- */
-
-#define USB_CFG_IOPORTNAME D
-/* This is the port where the USB bus is connected. When you configure it to
- * "B", the registers PORTB, PINB and DDRB will be used.
- */
-#define USB_CFG_DMINUS_BIT 4
-/* This is the bit number in USB_CFG_IOPORT where the USB D- line is connected.
- * This may be any bit in the port.
- */
-#define USB_CFG_DPLUS_BIT 3
-/* This is the bit number in USB_CFG_IOPORT where the USB D+ line is connected.
- * This may be any bit in the port. Please note that D+ must also be connected
- * to interrupt pin INT0! [You can also use other interrupts, see section
- * "Optional MCU Description" below, or you can connect D- to the interrupt, as
- * it is required if you use the USB_COUNT_SOF feature. If you use D- for the
- * interrupt, the USB interrupt will also be triggered at Start-Of-Frame
- * markers every millisecond.]
- */
-#define USB_CFG_CLOCK_KHZ (F_CPU/1000)
-/* Clock rate of the AVR in kHz. Legal values are 12000, 12800, 15000, 16000,
- * 16500 and 20000. The 12.8 MHz and 16.5 MHz versions of the code require no
- * crystal, they tolerate +/- 1% deviation from the nominal frequency. All
- * other rates require a precision of 2000 ppm and thus a crystal!
- * Default if not specified: 12 MHz
- */
-#define USB_CFG_CHECK_CRC 0
-/* Define this to 1 if you want that the driver checks integrity of incoming
- * data packets (CRC checks). CRC checks cost quite a bit of code size and are
- * currently only available for 18 MHz crystal clock. You must choose
- * USB_CFG_CLOCK_KHZ = 18000 if you enable this option.
- */
-
-/* ----------------------- Optional Hardware Config ------------------------ */
-
-#define USB_CFG_PULLUP_IOPORTNAME C
-/* If you connect the 1.5k pullup resistor from D- to a port pin instead of
- * V+, you can connect and disconnect the device from firmware by calling
- * the macros usbDeviceConnect() and usbDeviceDisconnect() (see usbdrv.h).
- * This constant defines the port on which the pullup resistor is connected.
- */
-#define USB_CFG_PULLUP_BIT 3
-/* This constant defines the bit number in USB_CFG_PULLUP_IOPORT (defined
- * above) where the 1.5k pullup resistor is connected. See description
- * above for details.
- */
-
-/* --------------------------- Functional Range ---------------------------- */
-
-#define USB_CFG_HAVE_INTRIN_ENDPOINT 0
-/* Define this to 1 if you want to compile a version with two endpoints: The
- * default control endpoint 0 and an interrupt-in endpoint (any other endpoint
- * number).
- */
-#define USB_CFG_HAVE_INTRIN_ENDPOINT3 0
-/* Define this to 1 if you want to compile a version with three endpoints: The
- * default control endpoint 0, an interrupt-in endpoint 3 (or the number
- * configured below) and a catch-all default interrupt-in endpoint as above.
- * You must also define USB_CFG_HAVE_INTRIN_ENDPOINT to 1 for this feature.
- */
-#define USB_CFG_EP3_NUMBER 3
-/* If the so-called endpoint 3 is used, it can now be configured to any other
- * endpoint number (except 0) with this macro. Default if undefined is 3.
- */
-/* #define USB_INITIAL_DATATOKEN USBPID_DATA1 */
-/* The above macro defines the startup condition for data toggling on the
- * interrupt/bulk endpoints 1 and 3. Defaults to USBPID_DATA1.
- * Since the token is toggled BEFORE sending any data, the first packet is
- * sent with the oposite value of this configuration!
- */
-#define USB_CFG_IMPLEMENT_HALT 0
-/* Define this to 1 if you also want to implement the ENDPOINT_HALT feature
- * for endpoint 1 (interrupt endpoint). Although you may not need this feature,
- * it is required by the standard. We have made it a config option because it
- * bloats the code considerably.
- */
-#define USB_CFG_SUPPRESS_INTR_CODE 0
-/* Define this to 1 if you want to declare interrupt-in endpoints, but don't
- * want to send any data over them. If this macro is defined to 1, functions
- * usbSetInterrupt() and usbSetInterrupt3() are omitted. This is useful if
- * you need the interrupt-in endpoints in order to comply to an interface
- * (e.g. HID), but never want to send any data. This option saves a couple
- * of bytes in flash memory and the transmit buffers in RAM.
- */
-#define USB_CFG_INTR_POLL_INTERVAL 10
-/* If you compile a version with endpoint 1 (interrupt-in), this is the poll
- * interval. The value is in milliseconds and must not be less than 10 ms for
- * low speed devices.
- */
-#define USB_CFG_IS_SELF_POWERED 1
-/* Define this to 1 if the device has its own power supply. Set it to 0 if the
- * device is powered from the USB bus.
- */
-#define USB_CFG_MAX_BUS_POWER 100
-/* Set this variable to the maximum USB bus power consumption of your device.
- * The value is in milliamperes. [It will be divided by two since USB
- * communicates power requirements in units of 2 mA.]
- */
-#define USB_CFG_IMPLEMENT_FN_WRITE 1
-/* Set this to 1 if you want usbFunctionWrite() to be called for control-out
- * transfers. Set it to 0 if you don't need it and want to save a couple of
- * bytes.
- */
-#define USB_CFG_IMPLEMENT_FN_READ 0
-/* Set this to 1 if you need to send control replies which are generated
- * "on the fly" when usbFunctionRead() is called. If you only want to send
- * data from a static buffer, set it to 0 and return the data from
- * usbFunctionSetup(). This saves a couple of bytes.
- */
-#define USB_CFG_IMPLEMENT_FN_WRITEOUT 0
-/* Define this to 1 if you want to use interrupt-out (or bulk out) endpoints.
- * You must implement the function usbFunctionWriteOut() which receives all
- * interrupt/bulk data sent to any endpoint other than 0. The endpoint number
- * can be found in 'usbRxToken'.
- */
-#define USB_CFG_HAVE_FLOWCONTROL 0
-/* Define this to 1 if you want flowcontrol over USB data. See the definition
- * of the macros usbDisableAllRequests() and usbEnableAllRequests() in
- * usbdrv.h.
- */
-#define USB_CFG_LONG_TRANSFERS 1
-/* Define this to 1 if you want to send/receive blocks of more than 254 bytes
- * in a single control-in or control-out transfer. Note that the capability
- * for long transfers increases the driver size.
- */
-/* #define USB_RX_USER_HOOK(data, len) if(usbRxToken == (uchar)USBPID_SETUP) blinkLED(); */
-/* This macro is a hook if you want to do unconventional things. If it is
- * defined, it's inserted at the beginning of received message processing.
- * If you eat the received message and don't want default processing to
- * proceed, do a return after doing your things. One possible application
- * (besides debugging) is to flash a status LED on each packet.
- */
-/* #define USB_RESET_HOOK(resetStarts) if(!resetStarts){hadUsbReset();} */
-/* This macro is a hook if you need to know when an USB RESET occurs. It has
- * one parameter which distinguishes between the start of RESET state and its
- * end.
- */
-/* #define USB_SET_ADDRESS_HOOK() hadAddressAssigned(); */
-/* This macro (if defined) is executed when a USB SET_ADDRESS request was
- * received.
- */
-#define USB_COUNT_SOF 0
-/* define this macro to 1 if you need the global variable "usbSofCount" which
- * counts SOF packets. This feature requires that the hardware interrupt is
- * connected to D- instead of D+.
- */
-/* #ifdef __ASSEMBLER__
- * macro myAssemblerMacro
- * in YL, TCNT0
- * sts timer0Snapshot, YL
- * endm
- * #endif
- * #define USB_SOF_HOOK myAssemblerMacro
- * This macro (if defined) is executed in the assembler module when a
- * Start Of Frame condition is detected. It is recommended to define it to
- * the name of an assembler macro which is defined here as well so that more
- * than one assembler instruction can be used. The macro may use the register
- * YL and modify SREG. If it lasts longer than a couple of cycles, USB messages
- * immediately after an SOF pulse may be lost and must be retried by the host.
- * What can you do with this hook? Since the SOF signal occurs exactly every
- * 1 ms (unless the host is in sleep mode), you can use it to tune OSCCAL in
- * designs running on the internal RC oscillator.
- * Please note that Start Of Frame detection works only if D- is wired to the
- * interrupt, not D+. THIS IS DIFFERENT THAN MOST EXAMPLES!
- */
-#define USB_CFG_CHECK_DATA_TOGGLING 0
-/* define this macro to 1 if you want to filter out duplicate data packets
- * sent by the host. Duplicates occur only as a consequence of communication
- * errors, when the host does not receive an ACK. Please note that you need to
- * implement the filtering yourself in usbFunctionWriteOut() and
- * usbFunctionWrite(). Use the global usbCurrentDataToken and a static variable
- * for each control- and out-endpoint to check for duplicate packets.
- */
-#define USB_CFG_HAVE_MEASURE_FRAME_LENGTH 0
-/* define this macro to 1 if you want the function usbMeasureFrameLength()
- * compiled in. This function can be used to calibrate the AVR's RC oscillator.
- */
-#define USB_USE_FAST_CRC 0
-/* The assembler module has two implementations for the CRC algorithm. One is
- * faster, the other is smaller. This CRC routine is only used for transmitted
- * messages where timing is not critical. The faster routine needs 31 cycles
- * per byte while the smaller one needs 61 to 69 cycles. The faster routine
- * may be worth the 32 bytes bigger code size if you transmit lots of data and
- * run the AVR close to its limit.
- */
-
-/* -------------------------- Device Description --------------------------- */
-
-#define USB_CFG_VENDOR_ID 0xc0, 0x16 /* = 0x16c0 = 5824 = voti.nl */
-/* USB vendor ID for the device, low byte first. If you have registered your
- * own Vendor ID, define it here. Otherwise you may use one of obdev's free
- * shared VID/PID pairs. Be sure to read USB-IDs-for-free.txt for rules!
- * *** IMPORTANT NOTE ***
- * This template uses obdev's shared VID/PID pair for Vendor Class devices
- * with libusb: 0x16c0/0x5dc. Use this VID/PID pair ONLY if you understand
- * the implications!
- */
-#define USB_CFG_DEVICE_ID 0xdc, 0x05 /* = 0x05dc = 1500 */
-/* This is the ID of the product, low byte first. It is interpreted in the
- * scope of the vendor ID. If you have registered your own VID with usb.org
- * or if you have licensed a PID from somebody else, define it here. Otherwise
- * you may use one of obdev's free shared VID/PID pairs. See the file
- * USB-IDs-for-free.txt for details!
- * *** IMPORTANT NOTE ***
- * This template uses obdev's shared VID/PID pair for Vendor Class devices
- * with libusb: 0x16c0/0x5dc. Use this VID/PID pair ONLY if you understand
- * the implications!
- */
-#define USB_CFG_DEVICE_VERSION 0x00, 0x01
-/* Version number of the device: Minor number first, then major number.
- */
-#define USB_CFG_VENDOR_NAME 'l', 'o', 'c', 'h', 'r', 'a', 's', 't', 'e', 'r', '.', 'o', 'r', 'g'
-#define USB_CFG_VENDOR_NAME_LEN 14
-/* These two values define the vendor name returned by the USB device. The name
- * must be given as a list of characters under single quotes. The characters
- * are interpreted as Unicode (UTF-16) entities.
- * If you don't want a vendor name string, undefine these macros.
- * ALWAYS define a vendor name containing your Internet domain name if you use
- * obdev's free shared VID/PID pair. See the file USB-IDs-for-free.txt for
- * details.
- */
-#define USB_CFG_DEVICE_NAME 'f', 'n', 'o', 'r', 'd', 'l', 'i', 'c', 'h', 't', '-', 'c', 'o', 'n', 't', 'r', 'o', 'l', 'l', 'e', 'r'
-#define USB_CFG_DEVICE_NAME_LEN 21
-/* Same as above for the device name. If you don't want a device name, undefine
- * the macros. See the file USB-IDs-for-free.txt before you assign a name if
- * you use a shared VID/PID.
- */
-/*#define USB_CFG_SERIAL_NUMBER 'N', 'o', 'n', 'e' */
-/*#define USB_CFG_SERIAL_NUMBER_LEN 0 */
-/* Same as above for the serial number. If you don't want a serial number,
- * undefine the macros.
- * It may be useful to provide the serial number through other means than at
- * compile time. See the section about descriptor properties below for how
- * to fine tune control over USB descriptors such as the string descriptor
- * for the serial number.
- */
-#define USB_CFG_DEVICE_CLASS 0xff /* set to 0 if deferred to interface */
-#define USB_CFG_DEVICE_SUBCLASS 0
-/* See USB specification if you want to conform to an existing device class.
- * Class 0xff is "vendor specific".
- */
-#define USB_CFG_INTERFACE_CLASS 0 /* define class here if not at device level */
-#define USB_CFG_INTERFACE_SUBCLASS 0
-#define USB_CFG_INTERFACE_PROTOCOL 0
-/* See USB specification if you want to conform to an existing device class or
- * protocol. The following classes must be set at interface level:
- * HID class is 3, no subclass and protocol required (but may be useful!)
- * CDC class is 2, use subclass 2 and protocol 1 for ACM
- */
-/* #define USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH 42 */
-/* Define this to the length of the HID report descriptor, if you implement
- * an HID device. Otherwise don't define it or define it to 0.
- * If you use this define, you must add a PROGMEM character array named
- * "usbHidReportDescriptor" to your code which contains the report descriptor.
- * Don't forget to keep the array and this define in sync!
- */
-
-/* #define USB_PUBLIC static */
-/* Use the define above if you #include usbdrv.c instead of linking against it.
- * This technique saves a couple of bytes in flash memory.
- */
-
-/* ------------------- Fine Control over USB Descriptors ------------------- */
-/* If you don't want to use the driver's default USB descriptors, you can
- * provide our own. These can be provided as (1) fixed length static data in
- * flash memory, (2) fixed length static data in RAM or (3) dynamically at
- * runtime in the function usbFunctionDescriptor(). See usbdrv.h for more
- * information about this function.
- * Descriptor handling is configured through the descriptor's properties. If
- * no properties are defined or if they are 0, the default descriptor is used.
- * Possible properties are:
- * + USB_PROP_IS_DYNAMIC: The data for the descriptor should be fetched
- * at runtime via usbFunctionDescriptor(). If the usbMsgPtr mechanism is
- * used, the data is in FLASH by default. Add property USB_PROP_IS_RAM if
- * you want RAM pointers.
- * + USB_PROP_IS_RAM: The data returned by usbFunctionDescriptor() or found
- * in static memory is in RAM, not in flash memory.
- * + USB_PROP_LENGTH(len): If the data is in static memory (RAM or flash),
- * the driver must know the descriptor's length. The descriptor itself is
- * found at the address of a well known identifier (see below).
- * List of static descriptor names (must be declared PROGMEM if in flash):
- * char usbDescriptorDevice[];
- * char usbDescriptorConfiguration[];
- * char usbDescriptorHidReport[];
- * char usbDescriptorString0[];
- * int usbDescriptorStringVendor[];
- * int usbDescriptorStringDevice[];
- * int usbDescriptorStringSerialNumber[];
- * Other descriptors can't be provided statically, they must be provided
- * dynamically at runtime.
- *
- * Descriptor properties are or-ed or added together, e.g.:
- * #define USB_CFG_DESCR_PROPS_DEVICE (USB_PROP_IS_RAM | USB_PROP_LENGTH(18))
- *
- * The following descriptors are defined:
- * USB_CFG_DESCR_PROPS_DEVICE
- * USB_CFG_DESCR_PROPS_CONFIGURATION
- * USB_CFG_DESCR_PROPS_STRINGS
- * USB_CFG_DESCR_PROPS_STRING_0
- * USB_CFG_DESCR_PROPS_STRING_VENDOR
- * USB_CFG_DESCR_PROPS_STRING_PRODUCT
- * USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER
- * USB_CFG_DESCR_PROPS_HID
- * USB_CFG_DESCR_PROPS_HID_REPORT
- * USB_CFG_DESCR_PROPS_UNKNOWN (for all descriptors not handled by the driver)
- *
- * Note about string descriptors: String descriptors are not just strings, they
- * are Unicode strings prefixed with a 2 byte header. Example:
- * int serialNumberDescriptor[] = {
- * USB_STRING_DESCRIPTOR_HEADER(6),
- * 'S', 'e', 'r', 'i', 'a', 'l'
- * };
- */
-
-#define USB_CFG_DESCR_PROPS_DEVICE 0
-#define USB_CFG_DESCR_PROPS_CONFIGURATION 0
-#define USB_CFG_DESCR_PROPS_STRINGS 0
-#define USB_CFG_DESCR_PROPS_STRING_0 0
-#define USB_CFG_DESCR_PROPS_STRING_VENDOR 0
-#define USB_CFG_DESCR_PROPS_STRING_PRODUCT 0
-#define USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER 0
-#define USB_CFG_DESCR_PROPS_HID 0
-#define USB_CFG_DESCR_PROPS_HID_REPORT 0
-#define USB_CFG_DESCR_PROPS_UNKNOWN 0
-
-/* ----------------------- Optional MCU Description ------------------------ */
-
-/* The following configurations have working defaults in usbdrv.h. You
- * usually don't need to set them explicitly. Only if you want to run
- * the driver on a device which is not yet supported or with a compiler
- * which is not fully supported (such as IAR C) or if you use a differnt
- * interrupt than INT0, you may have to define some of these.
- */
-/* #define USB_INTR_CFG MCUCR */
-#define USB_INTR_CFG_SET ((1 << ISC10) | (1 << ISC11))
-/* #define USB_INTR_CFG_CLR 0 */
-/* #define USB_INTR_ENABLE GIMSK */
-#define USB_INTR_ENABLE_BIT INT1
-/* #define USB_INTR_PENDING GIFR */
-#define USB_INTR_PENDING_BIT INTF1
-#define USB_INTR_VECTOR SIG_INTERRUPT1
-
-#endif /* __usbconfig_h_included__ */
+++ /dev/null
-This file documents changes in the firmware-only USB driver for atmel's AVR
-microcontrollers. New entries are always appended to the end of the file.
-Scroll down to the bottom to see the most recent changes.
-
-2005-04-01:
- - Implemented endpoint 1 as interrupt-in endpoint.
- - Moved all configuration options to usbconfig.h which is not part of the
- driver.
- - Changed interface for usbVendorSetup().
- - Fixed compatibility with ATMega8 device.
- - Various minor optimizations.
-
-2005-04-11:
- - Changed interface to application: Use usbFunctionSetup(), usbFunctionRead()
- and usbFunctionWrite() now. Added configuration options to choose which
- of these functions to compile in.
- - Assembler module delivers receive data non-inverted now.
- - Made register and bit names compatible with more AVR devices.
-
-2005-05-03:
- - Allow address of usbRxBuf on any memory page as long as the buffer does
- not cross 256 byte page boundaries.
- - Better device compatibility: works with Mega88 now.
- - Code optimization in debugging module.
- - Documentation updates.
-
-2006-01-02:
- - Added (free) default Vendor- and Product-IDs bought from voti.nl.
- - Added USBID-License.txt file which defines the rules for using the free
- shared VID/PID pair.
- - Added Readme.txt to the usbdrv directory which clarifies administrative
- issues.
-
-2006-01-25:
- - Added "configured state" to become more standards compliant.
- - Added "HALT" state for interrupt endpoint.
- - Driver passes the "USB Command Verifier" test from usb.org now.
- - Made "serial number" a configuration option.
- - Minor optimizations, we now recommend compiler option "-Os" for best
- results.
- - Added a version number to usbdrv.h
-
-2006-02-03:
- - New configuration variable USB_BUFFER_SECTION for the memory section where
- the USB rx buffer will go. This defaults to ".bss" if not defined. Since
- this buffer MUST NOT cross 256 byte pages (not even touch a page at the
- end), the user may want to pass a linker option similar to
- "-Wl,--section-start=.mybuffer=0x800060".
- - Provide structure for usbRequest_t.
- - New defines for USB constants.
- - Prepared for HID implementations.
- - Increased data size limit for interrupt transfers to 8 bytes.
- - New macro usbInterruptIsReady() to query interrupt buffer state.
-
-2006-02-18:
- - Ensure that the data token which is sent as an ack to an OUT transfer is
- always zero sized. This fixes a bug where the host reports an error after
- sending an out transfer to the device, although all data arrived at the
- device.
- - Updated docs in usbdrv.h to reflect changed API in usbFunctionWrite().
-
-* Release 2006-02-20
-
- - Give a compiler warning when compiling with debugging turned on.
- - Added Oleg Semyonov's changes for IAR-cc compatibility.
- - Added new (optional) functions usbDeviceConnect() and usbDeviceDisconnect()
- (also thanks to Oleg!).
- - Rearranged tests in usbPoll() to save a couple of instructions in the most
- likely case that no actions are pending.
- - We need a delay between the SET ADDRESS request until the new address
- becomes active. This delay was handled in usbPoll() until now. Since the
- spec says that the delay must not exceed 2ms, previous versions required
- aggressive polling during the enumeration phase. We have now moved the
- handling of the delay into the interrupt routine.
- - We must not reply with NAK to a SETUP transaction. We can only achieve this
- by making sure that the rx buffer is empty when SETUP tokens are expected.
- We therefore don't pass zero sized data packets from the status phase of
- a transfer to usbPoll(). This change MAY cause troubles if you rely on
- receiving a less than 8 bytes long packet in usbFunctionWrite() to
- identify the end of a transfer. usbFunctionWrite() will NEVER be called
- with a zero length.
-
-* Release 2006-03-14
-
- - Improved IAR C support: tiny memory model, more devices
- - Added template usbconfig.h file under the name usbconfig-prototype.h
-
-* Release 2006-03-26
-
- - Added provision for one more interrupt-in endpoint (endpoint 3).
- - Added provision for one interrupt-out endpoint (endpoint 1).
- - Added flowcontrol macros for USB.
- - Added provision for custom configuration descriptor.
- - Allow ANY two port bits for D+ and D-.
- - Merged (optional) receive endpoint number into global usbRxToken variable.
- - Use USB_CFG_IOPORTNAME instead of USB_CFG_IOPORT. We now construct the
- variable name from the single port letter instead of computing the address
- of related ports from the output-port address.
-
-* Release 2006-06-26
-
- - Updated documentation in usbdrv.h and usbconfig-prototype.h to reflect the
- new features.
- - Removed "#warning" directives because IAR does not understand them. Use
- unused static variables instead to generate a warning.
- - Do not include <avr/io.h> when compiling with IAR.
- - Introduced USB_CFG_DESCR_PROPS_* in usbconfig.h to configure how each
- USB descriptor should be handled. It is now possible to provide descriptor
- data in Flash, RAM or dynamically at runtime.
- - STALL is now a status in usbTxLen* instead of a message. We can now conform
- to the spec and leave the stall status pending until it is cleared.
- - Made usbTxPacketCnt1 and usbTxPacketCnt3 public. This allows the
- application code to reset data toggling on interrupt pipes.
-
-* Release 2006-07-18
-
- - Added an #if !defined __ASSEMBLER__ to the warning in usbdrv.h. This fixes
- an assembler error.
- - usbDeviceDisconnect() takes pull-up resistor to high impedance now.
-
-* Release 2007-02-01
-
- - Merged in some code size improvements from usbtiny (thanks to Dick
- Streefland for these optimizations!)
- - Special alignment requirement for usbRxBuf not required any more. Thanks
- again to Dick Streefland for this hint!
- - Reverted to "#warning" instead of unused static variables -- new versions
- of IAR CC should handle this directive.
- - Changed Open Source license to GNU GPL v2 in order to make linking against
- other free libraries easier. We no longer require publication of the
- circuit diagrams, but we STRONGLY encourage it. If you improve the driver
- itself, PLEASE grant us a royalty free license to your changes for our
- commercial license.
-
-* Release 2007-03-29
-
- - New configuration option "USB_PUBLIC" in usbconfig.h.
- - Set USB version number to 1.10 instead of 1.01.
- - Code used USB_CFG_DESCR_PROPS_STRING_DEVICE and
- USB_CFG_DESCR_PROPS_STRING_PRODUCT inconsistently. Changed all occurrences
- to USB_CFG_DESCR_PROPS_STRING_PRODUCT.
- - New assembler module for 16.5 MHz RC oscillator clock with PLL in receiver
- code.
- - New assembler module for 16 MHz crystal.
- - usbdrvasm.S contains common code only, clock-specific parts have been moved
- to usbdrvasm12.S, usbdrvasm16.S and usbdrvasm165.S respectively.
-
-* Release 2007-06-25
-
- - 16 MHz module: Do SE0 check in stuffed bits as well.
-
-* Release 2007-07-07
-
- - Define hi8(x) for IAR compiler to limit result to 8 bits. This is necessary
- for negative values.
- - Added 15 MHz module contributed by V. Bosch.
- - Interrupt vector name can now be configured. This is useful if somebody
- wants to use a different hardware interrupt than INT0.
-
-* Release 2007-08-07
-
- - Moved handleIn3 routine in usbdrvasm16.S so that relative jump range is
- not exceeded.
- - More config options: USB_RX_USER_HOOK(), USB_INITIAL_DATATOKEN,
- USB_COUNT_SOF
- - USB_INTR_PENDING can now be a memory address, not just I/O
-
-* Release 2007-09-19
-
- - Split out common parts of assembler modules into separate include file
- - Made endpoint numbers configurable so that given interface definitions
- can be matched. See USB_CFG_EP3_NUMBER in usbconfig-prototype.h.
- - Store endpoint number for interrupt/bulk-out so that usbFunctionWriteOut()
- can handle any number of endpoints.
- - Define usbDeviceConnect() and usbDeviceDisconnect() even if no
- USB_CFG_PULLUP_IOPORTNAME is defined. Directly set D+ and D- to 0 in this
- case.
-
-* Release 2007-12-01
-
- - Optimize usbDeviceConnect() and usbDeviceDisconnect() for less code size
- when USB_CFG_PULLUP_IOPORTNAME is not defined.
-
-* Release 2007-12-13
-
- - Renamed all include-only assembler modules from *.S to *.inc so that
- people don't add them to their project sources.
- - Distribute leap bits in tx loop more evenly for 16 MHz module.
- - Use "macro" and "endm" instead of ".macro" and ".endm" for IAR
- - Avoid compiler warnings for constant expr range by casting some values in
- USB descriptors.
-
-* Release 2008-01-21
-
- - Fixed bug in 15 and 16 MHz module where the new address set with
- SET_ADDRESS was already accepted at the next NAK or ACK we send, not at
- the next data packet we send. This caused problems when the host polled
- too fast. Thanks to Alexander Neumann for his help and patience debugging
- this issue!
-
-* Release 2008-02-05
-
- - Fixed bug in 16.5 MHz module where a register was used in the interrupt
- handler before it was pushed. This bug was introduced with version
- 2007-09-19 when common parts were moved to a separate file.
- - Optimized CRC routine (thanks to Reimar Doeffinger).
-
-* Release 2008-02-16
-
- - Removed outdated IAR compatibility stuff (code sections).
- - Added hook macros for USB_RESET_HOOK() and USB_SET_ADDRESS_HOOK().
- - Added optional routine usbMeasureFrameLength() for calibration of the
- internal RC oscillator.
-
-* Release 2008-02-28
-
- - USB_INITIAL_DATATOKEN defaults to USBPID_DATA1 now, which means that we
- start with sending USBPID_DATA0.
- - Changed defaults in usbconfig-prototype.h
- - Added free USB VID/PID pair for MIDI class devices
- - Restructured AVR-USB as separate package, not part of PowerSwitch any more.
-
-* Release 2008-04-18
-
- - Restructured usbdrv.c so that it is easier to read and understand.
- - Better code optimization with gcc 4.
- - If a second interrupt in endpoint is enabled, also add it to config
- descriptor.
- - Added config option for long transfers (above 254 bytes), see
- USB_CFG_LONG_TRANSFERS in usbconfig.h.
- - Added 20 MHz module contributed by Jeroen Benschop.
-
-* Release 2008-05-13
-
- - Fixed bug in libs-host/hiddata.c function usbhidGetReport(): length
- was not incremented, pointer to length was incremented instead.
- - Added code to command line tool(s) which claims an interface. This code
- is disabled by default, but may be necessary on newer Linux kernels.
- - Added usbconfig.h option "USB_CFG_CHECK_DATA_TOGGLING".
- - New header "usbportability.h" prepares ports to other development
- environments.
- - Long transfers (above 254 bytes) did not work when usbFunctionRead() was
- used to supply the data. Fixed this bug. [Thanks to Alexander Neumann!]
- - In hiddata.c (example code for sending/receiving data over HID), use
- USB_RECIP_DEVICE instead of USB_RECIP_INTERFACE for control transfers so
- that we need not claim the interface.
- - in usbPoll() loop 20 times polling for RESET state instead of 10 times.
- This accounts for the higher clock rates we now support.
- - Added a module for 12.8 MHz RC oscillator with PLL in receiver loop.
- - Added hook to SOF code so that oscillator can be tuned to USB frame clock.
- - Added timeout to waitForJ loop. Helps preventing unexpected hangs.
- - Added example code for oscillator tuning to libs-device (thanks to
- Henrik Haftmann for the idea to this routine).
- - Implemented option USB_CFG_SUPPRESS_INTR_CODE.
-
-* Release 2008-10-22
-
- - Fixed libs-device/osctune.h: OSCCAL is memory address on ATMega88 and
- similar, not offset of 0x20 needs to be added.
- - Allow distribution under GPLv3 for those who have to link against other
- code distributed under GPLv3.
-
-* Release 2008-11-26
-
- - Removed libusb-win32 dependency for hid-data example in Makefile.windows.
- It was never required and confused many people.
- - Added extern uchar usbRxToken to usbdrv.h.
- - Integrated a module with CRC checks at 18 MHz by Lukas Schrittwieser.
-
-* Release 2009-03-23
-
- - Hid-mouse example used settings from hid-data example, fixed that.
- - Renamed project to V-USB due to a trademark issue with Atmel(r).
- - Changed CommercialLicense.txt and USBID-License.txt to make the
- background of USB ID registration clearer.
-
-* Release 2009-04-15
-
- - Changed CommercialLicense.txt to reflect the new range of PIDs from
- Jason Kotzin.
- - Removed USBID-License.txt in favor of USB-IDs-for-free.txt and
- USB-ID-FAQ.txt
- - Fixed a bug in the 12.8 MHz module: End Of Packet decection was made in
- the center between bit 0 and 1 of each byte. This is where the data lines
- are expected to change and the sampled data may therefore be nonsense.
- We therefore check EOP ONLY if bits 0 AND 1 have both been read as 0 on D-.
- - Fixed a bitstuffing problem in the 16 MHz module: If bit 6 was stuffed,
- the unstuffing code in the receiver routine was 1 cycle too long. If
- multiple bytes had the unstuffing in bit 6, the error summed up until the
- receiver was out of sync.
- - Included option for faster CRC routine.
- Thanks to Slawomir Fras (BoskiDialer) for this code!
- - Updated bits in Configuration Descriptor's bmAttributes according to
- USB 1.1 (in particular bit 7, it is a must-be-set bit now).
-
-* Release 2009-08-22
+++ /dev/null
-V-USB Driver Software License Agreement
-Version 2009-08-03
-
-THIS LICENSE AGREEMENT GRANTS YOU CERTAIN RIGHTS IN A SOFTWARE. YOU CAN
-ENTER INTO THIS AGREEMENT AND ACQUIRE THE RIGHTS OUTLINED BELOW BY PAYING
-THE AMOUNT ACCORDING TO SECTION 4 ("PAYMENT") TO OBJECTIVE DEVELOPMENT.
-
-
-1 DEFINITIONS
-
-1.1 "OBJECTIVE DEVELOPMENT" shall mean OBJECTIVE DEVELOPMENT Software GmbH,
-Grosse Schiffgasse 1A/7, 1020 Wien, AUSTRIA.
-
-1.2 "You" shall mean the Licensee.
-
-1.3 "V-USB" shall mean all files included in the package distributed under
-the name "vusb" by OBJECTIVE DEVELOPMENT (http://www.obdev.at/vusb/)
-unless otherwise noted. This includes the firmware-only USB device
-implementation for Atmel AVR microcontrollers, some simple device examples
-and host side software examples and libraries.
-
-
-2 LICENSE GRANTS
-
-2.1 Source Code. OBJECTIVE DEVELOPMENT shall furnish you with the source
-code of V-USB.
-
-2.2 Distribution and Use. OBJECTIVE DEVELOPMENT grants you the
-non-exclusive right to use, copy and distribute V-USB with your hardware
-product(s), restricted by the limitations in section 3 below.
-
-2.3 Modifications. OBJECTIVE DEVELOPMENT grants you the right to modify
-the source code and your copy of V-USB according to your needs.
-
-2.4 USB IDs. OBJECTIVE DEVELOPMENT furnishes you with one or two USB
-Product ID(s), sent to you in e-mail. These Product IDs are reserved
-exclusively for you. OBJECTIVE DEVELOPMENT has obtained USB Product ID
-ranges under the Vendor ID 5824 from Wouter van Ooijen (Van Ooijen
-Technische Informatica, www.voti.nl) and under the Vendor ID 8352 from
-Jason Kotzin (Clay Logic, www.claylogic.com). Both owners of the Vendor IDs
-have obtained these IDs from the USB Implementers Forum, Inc.
-(www.usb.org). OBJECTIVE DEVELOPMENT disclaims all liability which might
-arise from the assignment of USB IDs.
-
-2.5 USB Certification. Although not part of this agreement, we want to make
-it clear that you cannot become USB certified when you use V-USB or a USB
-Product ID assigned by OBJECTIVE DEVELOPMENT. AVR microcontrollers don't
-meet the electrical specifications required by the USB specification and
-the USB Implementers Forum certifies only members who bought a Vendor ID of
-their own.
-
-
-3 LICENSE RESTRICTIONS
-
-3.1 Number of Units. Only one of the following three definitions is
-applicable. Which one is determined by the amount you pay to OBJECTIVE
-DEVELOPMENT, see section 4 ("Payment") below.
-
-Hobby License: You may use V-USB according to section 2 above in no more
-than 5 hardware units. These units must not be sold for profit.
-
-Entry Level License: You may use V-USB according to section 2 above in no
-more than 150 hardware units.
-
-Professional License: You may use V-USB according to section 2 above in
-any number of hardware units, except for large scale production ("unlimited
-fair use"). Quantities below 10,000 units are not considered large scale
-production. If your reach quantities which are obviously large scale
-production, you must pay a license fee of 0.10 EUR per unit for all units
-above 10,000.
-
-3.2 Rental. You may not rent, lease, or lend V-USB or otherwise encumber
-any copy of V-USB, or any of the rights granted herein.
-
-3.3 Transfer. You may not transfer your rights under this Agreement to
-another party without OBJECTIVE DEVELOPMENT's prior written consent. If
-such consent is obtained, you may permanently transfer this License to
-another party. The recipient of such transfer must agree to all terms and
-conditions of this Agreement.
-
-3.4 Reservation of Rights. OBJECTIVE DEVELOPMENT retains all rights not
-expressly granted.
-
-3.5 Non-Exclusive Rights. Your license rights under this Agreement are
-non-exclusive.
-
-3.6 Third Party Rights. This Agreement cannot grant you rights controlled
-by third parties. In particular, you are not allowed to use the USB logo or
-other trademarks owned by the USB Implementers Forum, Inc. without their
-consent. Since such consent depends on USB certification, it should be
-noted that V-USB will not pass certification because it does not
-implement checksum verification and the microcontroller ports do not meet
-the electrical specifications.
-
-
-4 PAYMENT
-
-The payment amount depends on the variation of this agreement (according to
-section 3.1) into which you want to enter. Concrete prices are listed on
-OBJECTIVE DEVELOPMENT's web site, usually at
-http://www.obdev.at/vusb/license.html. You agree to pay the amount listed
-there to OBJECTIVE DEVELOPMENT or OBJECTIVE DEVELOPMENT's payment processor
-or reseller.
-
-
-5 COPYRIGHT AND OWNERSHIP
-
-V-USB is protected by copyright laws and international copyright
-treaties, as well as other intellectual property laws and treaties. V-USB
-is licensed, not sold.
-
-
-6 TERM AND TERMINATION
-
-6.1 Term. This Agreement shall continue indefinitely. However, OBJECTIVE
-DEVELOPMENT may terminate this Agreement and revoke the granted license and
-USB-IDs if you fail to comply with any of its terms and conditions.
-
-6.2 Survival of Terms. All provisions regarding secrecy, confidentiality
-and limitation of liability shall survive termination of this agreement.
-
-
-7 DISCLAIMER OF WARRANTY AND LIABILITY
-
-LIMITED WARRANTY. V-USB IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
-KIND. TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, OBJECTIVE
-DEVELOPMENT AND ITS SUPPLIERS HEREBY DISCLAIM ALL WARRANTIES, EITHER
-EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
-OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND
-NON-INFRINGEMENT, WITH REGARD TO V-USB, AND THE PROVISION OF OR FAILURE
-TO PROVIDE SUPPORT SERVICES. THIS LIMITED WARRANTY GIVES YOU SPECIFIC LEGAL
-RIGHTS. YOU MAY HAVE OTHERS, WHICH VARY FROM STATE/JURISDICTION TO
-STATE/JURISDICTION.
-
-LIMITATION OF LIABILITY. TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW,
-IN NO EVENT SHALL OBJECTIVE DEVELOPMENT OR ITS SUPPLIERS BE LIABLE FOR ANY
-SPECIAL, INCIDENTAL, INDIRECT, OR CONSEQUENTIAL DAMAGES WHATSOEVER
-(INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS PROFITS,
-BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, OR ANY OTHER PECUNIARY
-LOSS) ARISING OUT OF THE USE OF OR INABILITY TO USE V-USB OR THE
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-DEVELOPMENT HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. IN ANY
-CASE, OBJECTIVE DEVELOPMENT'S ENTIRE LIABILITY UNDER ANY PROVISION OF THIS
-AGREEMENT SHALL BE LIMITED TO THE AMOUNT ACTUALLY PAID BY YOU FOR V-USB.
-
-
-8 MISCELLANEOUS TERMS
-
-8.1 Marketing. OBJECTIVE DEVELOPMENT has the right to mention for marketing
-purposes that you entered into this agreement.
-
-8.2 Entire Agreement. This document represents the entire agreement between
-OBJECTIVE DEVELOPMENT and you. It may only be modified in writing signed by
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-8.3 Severability. In case a provision of these terms and conditions should
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-the validity of all other provisions shall not be affected.
-
-8.4 Applicable Law. This agreement is governed by the laws of the Republic
-of Austria.
-
-8.5 Responsible Courts. The responsible courts in Vienna/Austria will have
-exclusive jurisdiction regarding all disputes in connection with this
-agreement.
-
+++ /dev/null
-OBJECTIVE DEVELOPMENT GmbH's V-USB driver software is distributed under the
-terms and conditions of the GNU GPL version 2 or the GNU GPL version 3. It is
-your choice whether you apply the terms of version 2 or version 3. The full
-text of GPLv2 is included below. In addition to the requirements in the GPL,
-we STRONGLY ENCOURAGE you to do the following:
-
-(1) Publish your entire project on a web site and drop us a note with the URL.
-Use the form at http://www.obdev.at/vusb/feedback.html for your submission.
-
-(2) Adhere to minimum publication standards. Please include AT LEAST:
- - a circuit diagram in PDF, PNG or GIF format
- - full source code for the host software
- - a Readme.txt file in ASCII format which describes the purpose of the
- project and what can be found in which directories and which files
- - a reference to http://www.obdev.at/vusb/
-
-(3) If you improve the driver firmware itself, please give us a free license
-to your modifications for our commercial license offerings.
-
-
-
- GNU GENERAL PUBLIC LICENSE
- Version 2, June 1991
-
- Copyright (C) 1989, 1991 Free Software Foundation, Inc.
- 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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-language. (Hereinafter, translation is included without limitation in
-the term "modification".) Each licensee is addressed as "you".
-
-Activities other than copying, distribution and modification are not
-covered by this License; they are outside its scope. The act of
-running the Program is not restricted, and the output from the Program
-is covered only if its contents constitute a work based on the
-Program (independent of having been made by running the Program).
-Whether that is true depends on what the Program does.
-
- 1. You may copy and distribute verbatim copies of the Program's
-source code as you receive it, in any medium, provided that you
-conspicuously and appropriately publish on each copy an appropriate
-copyright notice and disclaimer of warranty; keep intact all the
-notices that refer to this License and to the absence of any warranty;
-and give any other recipients of the Program a copy of this License
-along with the Program.
-
-You may charge a fee for the physical act of transferring a copy, and
-you may at your option offer warranty protection in exchange for a fee.
-
- 2. You may modify your copy or copies of the Program or any portion
-of it, thus forming a work based on the Program, and copy and
-distribute such modifications or work under the terms of Section 1
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- the Program is not required to print an announcement.)
-\f
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-entire whole, and thus to each and every part regardless of who wrote it.
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-collective works based on the Program.
-
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-with the Program (or with a work based on the Program) on a volume of
-a storage or distribution medium does not bring the other work under
-the scope of this License.
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-under Section 2) in object code or executable form under the terms of
-Sections 1 and 2 above provided that you also do one of the following:
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-\f
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-implemented by public license practices. Many people have made
-generous contributions to the wide range of software distributed
-through that system in reliance on consistent application of that
-system; it is up to the author/donor to decide if he or she is willing
-to distribute software through any other system and a licensee cannot
-impose that choice.
-
-This section is intended to make thoroughly clear what is believed to
-be a consequence of the rest of this License.
-\f
- 8. If the distribution and/or use of the Program is restricted in
-certain countries either by patents or by copyrighted interfaces, the
-original copyright holder who places the Program under this License
-may add an explicit geographical distribution limitation excluding
-those countries, so that distribution is permitted only in or among
-countries not thus excluded. In such case, this License incorporates
-the limitation as if written in the body of this License.
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- 9. The Free Software Foundation may publish revised and/or new versions
-of the General Public License from time to time. Such new versions will
-be similar in spirit to the present version, but may differ in detail to
-address new problems or concerns.
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-Each version is given a distinguishing version number. If the Program
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-later version", you have the option of following the terms and conditions
-either of that version or of any later version published by the Free
-Software Foundation. If the Program does not specify a version number of
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-Foundation.
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- 10. If you wish to incorporate parts of the Program into other free
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-
- NO WARRANTY
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- 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
-FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
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-TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
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-TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
-YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
-PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGES.
-
- END OF TERMS AND CONDITIONS
-\f
- How to Apply These Terms to Your New Programs
-
- If you develop a new program, and you want it to be of the greatest
-possible use to the public, the best way to achieve this is to make it
-free software which everyone can redistribute and change under these terms.
-
- To do so, attach the following notices to the program. It is safest
-to attach them to the start of each source file to most effectively
-convey the exclusion of warranty; and each file should have at least
-the "copyright" line and a pointer to where the full notice is found.
-
- <one line to give the program's name and a brief idea of what it does.>
- Copyright (C) <year> <name of author>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-
-
-Also add information on how to contact you by electronic and paper mail.
-
-If the program is interactive, make it output a short notice like this
-when it starts in an interactive mode:
-
- Gnomovision version 69, Copyright (C) year name of author
- Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
- This is free software, and you are welcome to redistribute it
- under certain conditions; type `show c' for details.
-
-The hypothetical commands `show w' and `show c' should show the appropriate
-parts of the General Public License. Of course, the commands you use may
-be called something other than `show w' and `show c'; they could even be
-mouse-clicks or menu items--whatever suits your program.
-
-You should also get your employer (if you work as a programmer) or your
-school, if any, to sign a "copyright disclaimer" for the program, if
-necessary. Here is a sample; alter the names:
-
- Yoyodyne, Inc., hereby disclaims all copyright interest in the program
- `Gnomovision' (which makes passes at compilers) written by James Hacker.
-
- <signature of Ty Coon>, 1 April 1989
- Ty Coon, President of Vice
-
-This General Public License does not permit incorporating your program into
-proprietary programs. If your program is a subroutine library, you may
-consider it more useful to permit linking proprietary applications with the
-library. If this is what you want to do, use the GNU Library General
-Public License instead of this License.
+++ /dev/null
-This is the Readme file to Objective Development's firmware-only USB driver
-for Atmel AVR microcontrollers. For more information please visit
-http://www.obdev.at/vusb/
-
-This directory contains the USB firmware only. Copy it as-is to your own
-project and add all .c and .S files to your project (these files are marked
-with an asterisk in the list below). Then copy usbconfig-prototype.h as
-usbconfig.h to your project and edit it according to your configuration.
-
-
-TECHNICAL DOCUMENTATION
-=======================
-The technical documentation (API) for the firmware driver is contained in the
-file "usbdrv.h". Please read all of it carefully! Configuration options are
-documented in "usbconfig-prototype.h".
-
-The driver consists of the following files:
- Readme.txt ............. The file you are currently reading.
- Changelog.txt .......... Release notes for all versions of the driver.
- usbdrv.h ............... Driver interface definitions and technical docs.
-* usbdrv.c ............... High level language part of the driver. Link this
- module to your code!
-* usbdrvasm.S ............ Assembler part of the driver. This module is mostly
- a stub and includes one of the usbdrvasm*.S files
- depending on processor clock. Link this module to
- your code!
- usbdrvasm*.inc ......... Assembler routines for particular clock frequencies.
- Included by usbdrvasm.S, don't link it directly!
- asmcommon.inc .......... Common assembler routines. Included by
- usbdrvasm*.inc, don't link it directly!
- usbconfig-prototype.h .. Prototype for your own usbdrv.h file.
-* oddebug.c .............. Debug functions. Only used when DEBUG_LEVEL is
- defined to a value greater than 0. Link this module
- to your code!
- oddebug.h .............. Interface definitions of the debug module.
- usbportability.h ....... Header with compiler-dependent stuff.
- usbdrvasm.asm .......... Compatibility stub for IAR-C-compiler. Use this
- module instead of usbdrvasm.S when you assembler
- with IAR's tools.
- License.txt ............ Open Source license for this driver.
- CommercialLicense.txt .. Optional commercial license for this driver.
- USB-ID-FAQ.txt ......... General infos about USB Product- and Vendor-IDs.
- USB-IDs-for-free.txt ... List and terms of use for free shared PIDs.
-
-(*) ... These files should be linked to your project.
-
-
-CPU CORE CLOCK FREQUENCY
-========================
-We supply assembler modules for clock frequencies of 12 MHz, 12.8 MHz, 15 MHz,
-16 MHz, 16.5 MHz 18 MHz and 20 MHz. Other clock rates are not supported. The
-actual clock rate must be configured in usbdrv.h unless you use the default
-12 MHz.
-
-12 MHz Clock
-This is the traditional clock rate of V-USB because it's the lowest clock
-rate where the timing constraints of the USB spec can be met.
-
-15 MHz Clock
-Similar to 12 MHz, but some NOPs inserted. On the other hand, the higher clock
-rate allows for some loops which make the resulting code size somewhat smaller
-than the 12 MHz version.
-
-16 MHz Clock
-This clock rate has been added for users of the Arduino board and other
-ready-made boards which come with a fixed 16 MHz crystal. It's also an option
-if you need the slightly higher clock rate for performance reasons. Since
-16 MHz is not divisible by the USB low speed bit clock of 1.5 MHz, the code
-is somewhat tricky and has to insert a leap cycle every third byte.
-
-12.8 MHz and 16.5 MHz Clock
-The assembler modules for these clock rates differ from the other modules
-because they have been built for an RC oscillator with only 1% precision. The
-receiver code inserts leap cycles to compensate for clock deviations. 1% is
-also the precision which can be achieved by calibrating the internal RC
-oscillator of the AVR. Please note that only AVRs with internal 64 MHz PLL
-oscillator can reach 16.5 MHz with the RC oscillator. This includes the very
-popular ATTiny25, ATTiny45, ATTiny85 series as well as the ATTiny26. Almost
-all AVRs can reach 12.8 MHz, although this is outside the specified range.
-
-See the EasyLogger example at http://www.obdev.at/vusb/easylogger.html for
-code which calibrates the RC oscillator based on the USB frame clock.
-
-18 MHz Clock
-This module is closer to the USB specification because it performs an on the
-fly CRC check for incoming packets. Packets with invalid checksum are
-discarded as required by the spec. If you also implement checks for data
-PID toggling on application level (see option USB_CFG_CHECK_DATA_TOGGLING
-in usbconfig.h for more info), this ensures data integrity. Due to the CRC
-tables and alignment requirements, this code is bigger than modules for other
-clock rates. To activate this module, you must define USB_CFG_CHECK_CRC to 1
-and USB_CFG_CLOCK_KHZ to 18000 in usbconfig.h.
-
-20 MHz Clock
-This module is for people who won't do it with less than the maximum. Since
-20 MHz is not divisible by the USB low speed bit clock of 1.5 MHz, the code
-uses similar tricks as the 16 MHz module to insert leap cycles.
-
-
-USB IDENTIFIERS
-===============
-Every USB device needs a vendor- and a product-identifier (VID and PID). VIDs
-are obtained from usb.org for a price of 1,500 USD. Once you have a VID, you
-can assign PIDs at will.
-
-Since an entry level cost of 1,500 USD is too high for most small companies
-and hobbyists, we provide some VID/PID pairs for free. See the file
-USB-IDs-for-free.txt for details.
-
-Objective Development also has some license offerings which include product
-IDs. See http://www.obdev.at/vusb/ for details.
-
-
-DEVELOPMENT SYSTEM
-==================
-This driver has been developed and optimized for the GNU compiler version 3
-(gcc 3). It does work well with gcc 4, but with bigger code size. We recommend
-that you use the GNU compiler suite because it is freely available. V-USB
-has also been ported to the IAR compiler and assembler. It has been tested
-with IAR 4.10B/W32 and 4.12A/W32 on an ATmega8 with the "small" and "tiny"
-memory model. Not every release is tested with IAR CC and the driver may
-therefore fail to compile with IAR. Please note that gcc is more efficient for
-usbdrv.c because this module has been deliberately optimized for gcc.
-
-
-USING V-USB FOR FREE
-====================
-The AVR firmware driver is published under the GNU General Public License
-Version 2 (GPL2) and the GNU General Public License Version 3 (GPL3). It is
-your choice whether you apply the terms of version 2 or version 3.
-
-If you decide for the free GPL2 or GPL3, we STRONGLY ENCOURAGE you to do the
-following things IN ADDITION to the obligations from the GPL:
-
-(1) Publish your entire project on a web site and drop us a note with the URL.
-Use the form at http://www.obdev.at/vusb/feedback.html for your submission.
-If you don't have a web site, you can publish the project in obdev's
-documentation wiki at
-http://www.obdev.at/goto.php?t=vusb-wiki&p=hosted-projects.
-
-(2) Adhere to minimum publication standards. Please include AT LEAST:
- - a circuit diagram in PDF, PNG or GIF format
- - full source code for the host software
- - a Readme.txt file in ASCII format which describes the purpose of the
- project and what can be found in which directories and which files
- - a reference to http://www.obdev.at/vusb/
-
-(3) If you improve the driver firmware itself, please give us a free license
-to your modifications for our commercial license offerings.
-
-
-COMMERCIAL LICENSES FOR V-USB
-=============================
-If you don't want to publish your source code under the terms of the GPL,
-you can simply pay money for V-USB. As an additional benefit you get
-USB PIDs for free, reserved exclusively to you. See the file
-"CommercialLicense.txt" for details.
-
+++ /dev/null
-Version 2009-08-22
-
-==========================
-WHY DO WE NEED THESE IDs?
-==========================
-
-USB is more than a low level protocol for data transport. It also defines a
-common set of requests which must be understood by all devices. And as part
-of these common requests, the specification defines data structures, the
-USB Descriptors, which are used to describe the properties of the device.
-
-From the perspective of an operating system, it is therefore possible to find
-out basic properties of a device (such as e.g. the manufacturer and the name
-of the device) without a device-specific driver. This is essential because
-the operating system can choose a driver to load based on this information
-(Plug-And-Play).
-
-Among the most important properties in the Device Descriptor are the USB
-Vendor- and Product-ID. Both are 16 bit integers. The most simple form of
-driver matching is based on these IDs. The driver announces the Vendor- and
-Product-IDs of the devices it can handle and the operating system loads the
-appropriate driver when the device is connected.
-
-It is obvious that this technique only works if the pair Vendor- plus
-Product-ID is unique: Only devices which require the same driver can have the
-same pair of IDs.
-
-
-=====================================================
-HOW DOES THE USB STANDARD ENSURE THAT IDs ARE UNIQUE?
-=====================================================
-
-Since it is so important that USB IDs are unique, the USB Implementers Forum,
-Inc. (usb.org) needs a way to enforce this legally. It is not forbidden by
-law to build a device and assign it any random numbers as IDs. Usb.org
-therefore needs an agreement to regulate the use of USB IDs. The agreement
-binds only parties who agreed to it, of course. Everybody else is free to use
-any numbers for their IDs.
-
-So how can usb.org ensure that every manufacturer of USB devices enters into
-an agreement with them? They do it via trademark licensing. Usb.org has
-registered the trademark "USB", all associated logos and related terms. If
-you want to put an USB logo on your product or claim that it is USB
-compliant, you must license these trademarks from usb.org. And this is where
-you enter into an agreement. See the "USB-IF Trademark License Agreement and
-Usage Guidelines for the USB-IF Logo" at
-http://www.usb.org/developers/logo_license/.
-
-Licensing the USB trademarks requires that you buy a USB Vendor-ID from
-usb.org (one-time fee of ca. 2,000 USD), that you become a member of usb.org
-(yearly fee of ca. 4,000 USD) and that you meet all the technical
-specifications from the USB spec.
-
-This means that most hobbyists and small companies will never be able to
-become USB compliant, just because membership is so expensive. And you can't
-be compliant with a driver based on V-USB anyway, because the AVR's port pins
-don't meet the electrical specifications for USB. So, in principle, all
-hobbyists and small companies are free to choose any random numbers for their
-IDs. They have nothing to lose...
-
-There is one exception worth noting, though: If you use a sub-component which
-implements USB, the vendor of the sub-components may guarantee USB
-compliance. This might apply to some or all of FTDI's solutions.
-
-
-=======================================================================
-WHY SHOULD YOU OBTAIN USB IDs EVEN IF YOU DON'T LICENSE USB TRADEMARKS?
-=======================================================================
-
-You have learned in the previous section that you are free to choose any
-numbers for your IDs anyway. So why not do exactly this? There is still the
-technical issue. If you choose IDs which are already in use by somebody else,
-operating systems will load the wrong drivers and your device won't work.
-Even if you choose IDs which are not currently in use, they may be in use in
-the next version of the operating system or even after an automatic update.
-
-So what you need is a pair of Vendor- and Product-IDs for which you have the
-guarantee that no USB compliant product uses them. This implies that no
-operating system will ever ship with drivers responsible for these IDs.
-
-
-==============================================
-HOW DOES OBJECTIVE DEVELOPMENT HANDLE USB IDs?
-==============================================
-
-Objective Development gives away pairs of USB-IDs with their V-USB licenses.
-In order to ensure that these IDs are unique, Objective Development has an
-agreement with the company/person who has bought the USB Vendor-ID from
-usb.org. This agreement ensures that a range of USB Product-IDs is reserved
-for assignment by Objective Development and that the owner of the Vendor-ID
-won't give it to anybody else.
-
-This means that you have to trust three parties to ensure uniqueness of
-your IDs:
-
- - Objective Development, that they don't give the same PID to more than
- one person.
- - The owner of the Vendor-ID that they don't assign PIDs from the range
- assigned to Objective Development to anybody else.
- - Usb.org that they don't assign the same Vendor-ID a second time.
-
-
-==================================
-WHO IS THE OWNER OF THE VENDOR-ID?
-==================================
-
-Objective Development has obtained ranges of USB Product-IDs under two
-Vendor-IDs: Under Vendor-ID 5824 from Wouter van Ooijen (Van Ooijen
-Technische Informatica, www.voti.nl) and under Vendor-ID 8352 from Jason
-Kotzin (Clay Logic, www.claylogic.com). Both VID owners have received their
-Vendor-ID directly from usb.org.
-
-
-=========================================================================
-CAN I USE USB-IDs FROM OBJECTIVE DEVELOPMENT WITH OTHER DRIVERS/HARDWARE?
-=========================================================================
-
-The short answer is: Yes. All you get is a guarantee that the IDs are never
-assigned to anybody else. What more do you need?
-
-
-============================
-WHAT ABOUT SHARED ID PAIRS?
-============================
-
-Objective Development has reserved some PID/VID pairs for shared use. You
-have no guarantee of uniqueness for them, except that no USB compliant device
-uses them. In order to avoid technical problems, we must ensure that all
-devices with the same pair of IDs use the same driver on kernel level. For
-details, see the file USB-IDs-for-free.txt.
-
-
-======================================================
-I HAVE HEARD THAT SUB-LICENSING OF USB-IDs IS ILLEGAL?
-======================================================
-
-A 16 bit integer number cannot be protected by copyright laws. It is not
-sufficiently complex. And since none of the parties involved entered into the
-USB-IF Trademark License Agreement, we are not bound by this agreement. So
-there is no reason why it should be illegal to sub-license USB-IDs.
-
-
-=============================================
-WHO IS LIABLE IF THERE ARE INCOMPATIBILITIES?
-=============================================
-
-Objective Development disclaims all liabilities which might arise from the
-assignment of IDs. If you guarantee product features to your customers
-without proper disclaimer, YOU are liable for that.
+++ /dev/null
-Version 2009-08-22
-
-===========================
-FREE USB-IDs FOR SHARED USE
-===========================
-
-Objective Development has reserved a set of USB Product-IDs for use according
-to the guidelines outlined below. For more information about the concept of
-USB IDs please see the file USB-ID-FAQ.txt. Objective Development guarantees
-that the IDs listed below are not used by any USB compliant devices.
-
-
-====================
-MECHANISM OF SHARING
-====================
-
-From a technical point of view, two different devices can share the same USB
-Vendor- and Product-ID if they require the same driver on operating system
-level. We make use of this fact by assigning separate IDs for various device
-classes. On application layer, devices must be distinguished by their textual
-name or serial number. We offer separate sets of IDs for discrimination by
-textual name and for serial number.
-
-Examples for shared use of USB IDs are included with V-USB in the "examples"
-subdirectory.
-
-
-======================================
-IDs FOR DISCRIMINATION BY TEXTUAL NAME
-======================================
-
-If you use one of the IDs listed below, your device and host-side software
-must conform to these rules:
-
-(1) The USB device MUST provide a textual representation of the manufacturer
-and product identification. The manufacturer identification MUST be available
-at least in USB language 0x0409 (English/US).
-
-(2) The textual manufacturer identification MUST contain either an Internet
-domain name (e.g. "mycompany.com") registered and owned by you, or an e-mail
-address under your control (e.g. "myname@gmx.net"). You can embed the domain
-name or e-mail address in any string you like, e.g. "Objective Development
-http://www.obdev.at/vusb/".
-
-(3) You are responsible for retaining ownership of the domain or e-mail
-address for as long as any of your products are in use.
-
-(4) You may choose any string for the textual product identification, as long
-as this string is unique within the scope of your textual manufacturer
-identification.
-
-(5) Application side device look-up MUST be based on the textual manufacturer
-and product identification in addition to VID/PID matching. The driver
-matching MUST be a comparison of the entire strings, NOT a sub-string match.
-
-(6) For devices which implement a particular USB device class (e.g. HID), the
-operating system's default class driver MUST be used. If an operating system
-driver for Vendor Class devices is needed, this driver must be libusb or
-libusb-win32 (see http://libusb.org/ and
-http://libusb-win32.sourceforge.net/).
-
-Table if IDs for discrimination by textual name:
-
-PID dec (hex) | VID dec (hex) | Description of use
-==============+===============+============================================
-1500 (0x05dc) | 5824 (0x16c0) | For Vendor Class devices with libusb
---------------+---------------+--------------------------------------------
-1503 (0x05df) | 5824 (0x16c0) | For generic HID class devices (which are
- | | NOT mice, keyboards or joysticks)
---------------+---------------+--------------------------------------------
-1505 (0x05e1) | 5824 (0x16c0) | For CDC-ACM class devices (modems)
---------------+---------------+--------------------------------------------
-1508 (0x05e4) | 5824 (0x16c0) | For MIDI class devices
---------------+---------------+--------------------------------------------
-
-Note that Windows caches the textual product- and vendor-description for
-mice, keyboards and joysticks. Name-bsed discrimination is therefore not
-recommended for these device classes.
-
-
-=======================================
-IDs FOR DISCRIMINATION BY SERIAL NUMBER
-=======================================
-
-If you use one of the IDs listed below, your device and host-side software
-must conform to these rules:
-
-(1) The USB device MUST provide a textual representation of the serial
-number. The serial number string MUST be available at least in USB language
-0x0409 (English/US).
-
-(2) The serial number MUST start with either an Internet domain name (e.g.
-"mycompany.com") registered and owned by you, or an e-mail address under your
-control (e.g. "myname@gmx.net"), both terminated with a colon (":") character.
-You MAY append any string you like for further discrimination of your devices.
-
-(3) You are responsible for retaining ownership of the domain or e-mail
-address for as long as any of your products are in use.
-
-(5) Application side device look-up MUST be based on the serial number string
-in addition to VID/PID matching. The matching must start at the first
-character of the serial number string and include the colon character
-terminating your domain or e-mail address. It MAY stop anywhere after that.
-
-(6) For devices which implement a particular USB device class (e.g. HID), the
-operating system's default class driver MUST be used. If an operating system
-driver for Vendor Class devices is needed, this driver must be libusb or
-libusb-win32 (see http://libusb.org/ and
-http://libusb-win32.sourceforge.net/).
-
-Table if IDs for discrimination by serial number string:
-
-PID dec (hex) | VID dec (hex) | Description of use
-===============+===============+===========================================
-10200 (0x27d8) | 5824 (0x16c0) | For Vendor Class devices with libusb
----------------+---------------+-------------------------------------------
-10201 (0x27d9) | 5824 (0x16c0) | For generic HID class devices (which are
- | | NOT mice, keyboards or joysticks)
----------------+---------------+-------------------------------------------
-10202 (0x27da) | 5824 (0x16c0) | For USB Mice
----------------+---------------+-------------------------------------------
-10203 (0x27db) | 5824 (0x16c0) | For USB Keyboards
----------------+---------------+-------------------------------------------
-10204 (0x27db) | 5824 (0x16c0) | For USB Joysticks
----------------+---------------+-------------------------------------------
-10205 (0x27dc) | 5824 (0x16c0) | For CDC-ACM class devices (modems)
----------------+---------------+-------------------------------------------
-10206 (0x27dd) | 5824 (0x16c0) | For MIDI class devices
----------------+---------------+-------------------------------------------
-
-
-=================
-ORIGIN OF USB-IDs
-=================
-
-OBJECTIVE DEVELOPMENT Software GmbH has obtained all VID/PID pairs listed
-here from Wouter van Ooijen (see www.voti.nl) for exclusive disposition.
-Wouter van Ooijen has obtained the VID from the USB Implementers Forum, Inc.
-(see www.usb.org). The VID is registered for the company name "Van Ooijen
-Technische Informatica".
-
-
-==========
-DISCLAIMER
-==========
-
-OBJECTIVE DEVELOPMENT Software GmbH disclaims all liability for any
-problems which are caused by the shared use of these VID/PID pairs.
+++ /dev/null
-Royalty-Free Non-Exclusive Use of USB Product-IDs
-=================================================
-
-Version 2009-04-13
-
-Strictly speaking, this is not a license. You can't give a license to use
-a simple number (such as e.g. 1500) for any purpose. This is a set of rules
-which should make it possible to build USB devices without the requirement
-for individual USB IDs. If you break one of the rules, you will run into
-technical problems sooner or later, but you don't risk legal trouble.
-
-
-OBJECTIVE DEVELOPMENT Software GmbH hereby grants you the non-exclusive
-right to use four USB.org vendor-ID (VID) / product-ID (PID) pairs with
-products based on Objective Development's firmware-only USB driver for
-Atmel AVR microcontrollers:
-
- * VID = 5824 (=0x16c0) / PID = 1500 (=0x5dc) for devices implementing no
- USB device class (vendor-class devices with USB class = 0xff). Devices
- using this pair will be referred to as "VENDOR CLASS" devices.
-
- * VID = 5824 (=0x16c0) / PID = 1503 (=0x5df) for HID class devices
- (excluding mice and keyboards). Devices using this pair will be referred
- to as "HID CLASS" devices.
-
- * VID = 5824 (=0x16c0) / PID = 1505 (=0x5e1) for CDC class modem devices
- Devices using this pair will be referred to as "CDC-ACM CLASS" devices.
-
- * VID = 5824 (=0x16c0) / PID = 1508 (=0x5e4) for MIDI class devices
- Devices using this pair will be referred to as "MIDI CLASS" devices.
-
-Since the granted right is non-exclusive, the same VID/PID pairs may be
-used by many companies and individuals for different products. To avoid
-conflicts, your device and host driver software MUST adhere to the rules
-outlined below.
-
-OBJECTIVE DEVELOPMENT Software GmbH has obtained these VID/PID pairs from
-Wouter van Ooijen (see www.voti.nl) for exclusive disposition. Wouter van
-Ooijen has obtained the VID from the USB Implementers Forum, Inc.
-(see www.usb.org). The VID is registered for the company name
-"Van Ooijen Technische Informatica".
-
-
-RULES AND RESTRICTIONS
-======================
-
-(1) The USB device MUST provide a textual representation of the
-manufacturer and product identification. The manufacturer identification
-MUST be available at least in USB language 0x0409 (English/US).
-
-(2) The textual manufacturer identification MUST contain either an Internet
-domain name (e.g. "mycompany.com") registered and owned by you, or an
-e-mail address under your control (e.g. "myname@gmx.net"). You can embed
-the domain name or e-mail address in any string you like, e.g. "Objective
-Development http://www.obdev.at/vusb/".
-
-(3) You are responsible for retaining ownership of the domain or e-mail
-address for as long as any of your products are in use.
-
-(4) You may choose any string for the textual product identification, as
-long as this string is unique within the scope of your textual manufacturer
-identification.
-
-(5) Matching of device-specific drivers MUST be based on the textual
-manufacturer and product identification in addition to the usual VID/PID
-matching. This means that operating system features which are based on
-VID/PID matching only (e.g. Windows kernel level drivers, automatic actions
-when the device is plugged in etc) MUST NOT be used. The driver matching
-MUST be a comparison of the entire strings, NOT a sub-string match. For
-CDC-ACM CLASS and MIDI CLASS devices, a generic class driver should be used
-and the matching is based on the USB device class.
-
-(6) The extent to which VID/PID matching is allowed for non device-specific
-drivers or features depends on the operating system and particular VID/PID
-pair used:
-
- * Mac OS X, Linux, FreeBSD and other Unixes: No VID/PID matching is
- required and hence no VID/PID-only matching is allowed at all.
-
- * Windows: The operating system performs VID/PID matching for the kernel
- level driver. You are REQUIRED to use libusb-win32 (see
- http://libusb-win32.sourceforge.net/) as the kernel level driver for
- VENDOR CLASS devices. HID CLASS devices all use the generic HID class
- driver shipped with Windows, except mice and keyboards. You therefore
- MUST NOT use any of the shared VID/PID pairs for mice or keyboards.
- CDC-ACM CLASS devices require a ".inf" file which matches on the VID/PID
- pair. This ".inf" file MUST load the "usbser" driver to configure the
- device as modem (COM-port).
-
-(7) OBJECTIVE DEVELOPMENT Software GmbH disclaims all liability for any
-problems which are caused by the shared use of these VID/PID pairs. You
-have been warned that the sharing of VID/PID pairs may cause problems. If
-you want to avoid them, get your own VID/PID pair for exclusive use.
-
-
-HOW TO IMPLEMENT THESE RULES
-============================
-
-The following rules are for VENDOR CLASS and HID CLASS devices. CDC-ACM
-CLASS and MIDI CLASS devices use the operating system's class driver and
-don't need a custom driver.
-
-The host driver MUST iterate over all devices with the given VID/PID
-numbers in their device descriptors and query the string representation for
-the manufacturer name in USB language 0x0409 (English/US). It MUST compare
-the ENTIRE string with your textual manufacturer identification chosen in
-(2) above. A substring search for your domain or e-mail address is NOT
-acceptable. The driver MUST NOT touch the device (other than querying the
-descriptors) unless the strings match.
-
-For all USB devices with matching VID/PID and textual manufacturer
-identification, the host driver must query the textual product
-identification and string-compare it with the name of the product it can
-control. It may only initialize the device if the product matches exactly.
-
-Objective Development provides examples for these matching rules with the
-"PowerSwitch" project (using libusb) and with the "Automator" project
-(using Windows calls on Windows and libusb on Unix).
-
-
-Technical Notes:
-================
-
-Sharing the same VID/PID pair among devices is possible as long as ALL
-drivers which match the VID/PID also perform matching on the textual
-identification strings. This is easy on all operating systems except
-Windows, since Windows establishes a static connection between the VID/PID
-pair and a kernel level driver. All devices with the same VID/PID pair must
-therefore use THE SAME kernel level driver.
-
-We therefore demand that you use libusb-win32 for VENDOR CLASS devices.
-This is a generic kernel level driver which allows all types of USB access
-for user space applications. This is only a partial solution of the
-problem, though, because different device drivers may come with different
-versions of libusb-win32 and they may not work with the libusb version of
-the respective other driver. You are therefore encouraged to test your
-driver against a broad range of libusb-win32 versions. Do not use new
-features in new versions, or check for their existence before you use them.
-When a new libusb-win32 becomes available, make sure that your driver is
-compatible with it.
-
-For HID CLASS devices it is necessary that all those devices bind to the
-same kernel driver: Microsoft's generic USB HID driver. This is true for
-all HID devices except those with a specialized driver. Currently, the only
-HIDs with specialized drivers are mice and keyboards. You therefore MUST
-NOT use a shared VID/PID with mouse and keyboard devices.
-
-Sharing the same VID/PID among different products is unusual and probably
-violates the USB specification. If you do it, you do it at your own risk.
-
-To avoid possible incompatibilities, we highly recommend that you get your
-own VID/PID pair if you intend to sell your product. Objective
-Development's commercial licenses for V-USB include a PID for
-unrestricted exclusive use.
+++ /dev/null
-/* Name: asmcommon.inc
- * Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
- * Author: Christian Starkjohann
- * Creation Date: 2007-11-05
- * Tabsize: 4
- * Copyright: (c) 2007 by OBJECTIVE DEVELOPMENT Software GmbH
- * License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
- * Revision: $Id$
- */
-
-/* Do not link this file! Link usbdrvasm.S instead, which includes the
- * appropriate implementation!
- */
-
-/*
-General Description:
-This file contains assembler code which is shared among the USB driver
-implementations for different CPU cocks. Since the code must be inserted
-in the middle of the module, it's split out into this file and #included.
-
-Jump destinations called from outside:
- sofError: Called when no start sequence was found.
- se0: Called when a package has been successfully received.
- overflow: Called when receive buffer overflows.
- doReturn: Called after sending data.
-
-Outside jump destinations used by this module:
- waitForJ: Called to receive an already arriving packet.
- sendAckAndReti:
- sendNakAndReti:
- sendCntAndReti:
- usbSendAndReti:
-
-The following macros must be defined before this file is included:
- .macro POP_STANDARD
- .endm
- .macro POP_RETI
- .endm
-*/
-
-#define token x1
-
-overflow:
- ldi x2, 1<<USB_INTR_PENDING_BIT
- USB_STORE_PENDING(x2) ; clear any pending interrupts
-ignorePacket:
- clr token
- rjmp storeTokenAndReturn
-
-;----------------------------------------------------------------------------
-; Processing of received packet (numbers in brackets are cycles after center of SE0)
-;----------------------------------------------------------------------------
-;This is the only non-error exit point for the software receiver loop
-;we don't check any CRCs here because there is no time left.
-se0:
- subi cnt, USB_BUFSIZE ;[5]
- neg cnt ;[6]
- sub YL, cnt ;[7]
- sbci YH, 0 ;[8]
- ldi x2, 1<<USB_INTR_PENDING_BIT ;[9]
- USB_STORE_PENDING(x2) ;[10] clear pending intr and check flag later. SE0 should be over.
- ld token, y ;[11]
- cpi token, USBPID_DATA0 ;[13]
- breq handleData ;[14]
- cpi token, USBPID_DATA1 ;[15]
- breq handleData ;[16]
- lds shift, usbDeviceAddr;[17]
- ldd x2, y+1 ;[19] ADDR and 1 bit endpoint number
- lsl x2 ;[21] shift out 1 bit endpoint number
- cpse x2, shift ;[22]
- rjmp ignorePacket ;[23]
-/* only compute endpoint number in x3 if required later */
-#if USB_CFG_HAVE_INTRIN_ENDPOINT || USB_CFG_IMPLEMENT_FN_WRITEOUT
- ldd x3, y+2 ;[24] endpoint number + crc
- rol x3 ;[26] shift in LSB of endpoint
-#endif
- cpi token, USBPID_IN ;[27]
- breq handleIn ;[28]
- cpi token, USBPID_SETUP ;[29]
- breq handleSetupOrOut ;[30]
- cpi token, USBPID_OUT ;[31]
- brne ignorePacket ;[32] must be ack, nak or whatever
-; rjmp handleSetupOrOut ; fallthrough
-
-;Setup and Out are followed by a data packet two bit times (16 cycles) after
-;the end of SE0. The sync code allows up to 40 cycles delay from the start of
-;the sync pattern until the first bit is sampled. That's a total of 56 cycles.
-handleSetupOrOut: ;[32]
-#if USB_CFG_IMPLEMENT_FN_WRITEOUT /* if we have data for endpoint != 0, set usbCurrentTok to address */
- andi x3, 0xf ;[32]
- breq storeTokenAndReturn ;[33]
- mov token, x3 ;[34] indicate that this is endpoint x OUT
-#endif
-storeTokenAndReturn:
- sts usbCurrentTok, token;[35]
-doReturn:
- POP_STANDARD ;[37] 12...16 cycles
- USB_LOAD_PENDING(YL) ;[49]
- sbrc YL, USB_INTR_PENDING_BIT;[50] check whether data is already arriving
- rjmp waitForJ ;[51] save the pops and pushes -- a new interrupt is already pending
-sofError:
- POP_RETI ;macro call
- reti
-
-handleData:
-#if USB_CFG_CHECK_CRC
- CRC_CLEANUP_AND_CHECK ; jumps to ignorePacket if CRC error
-#endif
- lds shift, usbCurrentTok;[18]
- tst shift ;[20]
- breq doReturn ;[21]
- lds x2, usbRxLen ;[22]
- tst x2 ;[24]
- brne sendNakAndReti ;[25]
-; 2006-03-11: The following two lines fix a problem where the device was not
-; recognized if usbPoll() was called less frequently than once every 4 ms.
- cpi cnt, 4 ;[26] zero sized data packets are status phase only -- ignore and ack
- brmi sendAckAndReti ;[27] keep rx buffer clean -- we must not NAK next SETUP
-#if USB_CFG_CHECK_DATA_TOGGLING
- sts usbCurrentDataToken, token ; store for checking by C code
-#endif
- sts usbRxLen, cnt ;[28] store received data, swap buffers
- sts usbRxToken, shift ;[30]
- lds x2, usbInputBufOffset;[32] swap buffers
- ldi cnt, USB_BUFSIZE ;[34]
- sub cnt, x2 ;[35]
- sts usbInputBufOffset, cnt;[36] buffers now swapped
- rjmp sendAckAndReti ;[38] 40 + 17 = 57 until SOP
-
-handleIn:
-;We don't send any data as long as the C code has not processed the current
-;input data and potentially updated the output data. That's more efficient
-;in terms of code size than clearing the tx buffers when a packet is received.
- lds x1, usbRxLen ;[30]
- cpi x1, 1 ;[32] negative values are flow control, 0 means "buffer free"
- brge sendNakAndReti ;[33] unprocessed input packet?
- ldi x1, USBPID_NAK ;[34] prepare value for usbTxLen
-#if USB_CFG_HAVE_INTRIN_ENDPOINT
- andi x3, 0xf ;[35] x3 contains endpoint
-#if USB_CFG_SUPPRESS_INTR_CODE
- brne sendNakAndReti ;[36]
-#else
- brne handleIn1 ;[36]
-#endif
-#endif
- lds cnt, usbTxLen ;[37]
- sbrc cnt, 4 ;[39] all handshake tokens have bit 4 set
- rjmp sendCntAndReti ;[40] 42 + 16 = 58 until SOP
- sts usbTxLen, x1 ;[41] x1 == USBPID_NAK from above
- ldi YL, lo8(usbTxBuf) ;[43]
- ldi YH, hi8(usbTxBuf) ;[44]
- rjmp usbSendAndReti ;[45] 57 + 12 = 59 until SOP
-
-; Comment about when to set usbTxLen to USBPID_NAK:
-; We should set it back when we receive the ACK from the host. This would
-; be simple to implement: One static variable which stores whether the last
-; tx was for endpoint 0 or 1 and a compare in the receiver to distinguish the
-; ACK. However, we set it back immediately when we send the package,
-; assuming that no error occurs and the host sends an ACK. We save one byte
-; RAM this way and avoid potential problems with endless retries. The rest of
-; the driver assumes error-free transfers anyway.
-
-#if !USB_CFG_SUPPRESS_INTR_CODE && USB_CFG_HAVE_INTRIN_ENDPOINT /* placed here due to relative jump range */
-handleIn1: ;[38]
-#if USB_CFG_HAVE_INTRIN_ENDPOINT3
-; 2006-06-10 as suggested by O.Tamura: support second INTR IN / BULK IN endpoint
- cpi x3, USB_CFG_EP3_NUMBER;[38]
- breq handleIn3 ;[39]
-#endif
- lds cnt, usbTxLen1 ;[40]
- sbrc cnt, 4 ;[42] all handshake tokens have bit 4 set
- rjmp sendCntAndReti ;[43] 47 + 16 = 63 until SOP
- sts usbTxLen1, x1 ;[44] x1 == USBPID_NAK from above
- ldi YL, lo8(usbTxBuf1) ;[46]
- ldi YH, hi8(usbTxBuf1) ;[47]
- rjmp usbSendAndReti ;[48] 50 + 12 = 62 until SOP
-
-#if USB_CFG_HAVE_INTRIN_ENDPOINT3
-handleIn3:
- lds cnt, usbTxLen3 ;[41]
- sbrc cnt, 4 ;[43]
- rjmp sendCntAndReti ;[44] 49 + 16 = 65 until SOP
- sts usbTxLen3, x1 ;[45] x1 == USBPID_NAK from above
- ldi YL, lo8(usbTxBuf3) ;[47]
- ldi YH, hi8(usbTxBuf3) ;[48]
- rjmp usbSendAndReti ;[49] 51 + 12 = 63 until SOP
-#endif
-#endif
+++ /dev/null
-/* Name: oddebug.c
- * Project: AVR library
- * Author: Christian Starkjohann
- * Creation Date: 2005-01-16
- * Tabsize: 4
- * Copyright: (c) 2005 by OBJECTIVE DEVELOPMENT Software GmbH
- * License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
- * This Revision: $Id: oddebug.c 692 2008-11-07 15:07:40Z cs $
- */
-
-#include "oddebug.h"
-
-#if DEBUG_LEVEL > 0
-
-#warning "Never compile production devices with debugging enabled"
-
-static void uartPutc(char c)
-{
- while(!(ODDBG_USR & (1 << ODDBG_UDRE))); /* wait for data register empty */
- ODDBG_UDR = c;
-}
-
-static uchar hexAscii(uchar h)
-{
- h &= 0xf;
- if(h >= 10)
- h += 'a' - (uchar)10 - '0';
- h += '0';
- return h;
-}
-
-static void printHex(uchar c)
-{
- uartPutc(hexAscii(c >> 4));
- uartPutc(hexAscii(c));
-}
-
-void odDebug(uchar prefix, uchar *data, uchar len)
-{
- printHex(prefix);
- uartPutc(':');
- while(len--){
- uartPutc(' ');
- printHex(*data++);
- }
- uartPutc('\r');
- uartPutc('\n');
-}
-
-#endif
+++ /dev/null
-/* Name: oddebug.h
- * Project: AVR library
- * Author: Christian Starkjohann
- * Creation Date: 2005-01-16
- * Tabsize: 4
- * Copyright: (c) 2005 by OBJECTIVE DEVELOPMENT Software GmbH
- * License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
- * This Revision: $Id: oddebug.h 692 2008-11-07 15:07:40Z cs $
- */
-
-#ifndef __oddebug_h_included__
-#define __oddebug_h_included__
-
-/*
-General Description:
-This module implements a function for debug logs on the serial line of the
-AVR microcontroller. Debugging can be configured with the define
-'DEBUG_LEVEL'. If this macro is not defined or defined to 0, all debugging
-calls are no-ops. If it is 1, DBG1 logs will appear, but not DBG2. If it is
-2, DBG1 and DBG2 logs will be printed.
-
-A debug log consists of a label ('prefix') to indicate which debug log created
-the output and a memory block to dump in hex ('data' and 'len').
-*/
-
-
-#ifndef F_CPU
-# define F_CPU 12000000 /* 12 MHz */
-#endif
-
-/* make sure we have the UART defines: */
-#include "usbportability.h"
-
-#ifndef uchar
-# define uchar unsigned char
-#endif
-
-#if DEBUG_LEVEL > 0 && !(defined TXEN || defined TXEN0) /* no UART in device */
-# warning "Debugging disabled because device has no UART"
-# undef DEBUG_LEVEL
-#endif
-
-#ifndef DEBUG_LEVEL
-# define DEBUG_LEVEL 0
-#endif
-
-/* ------------------------------------------------------------------------- */
-
-#if DEBUG_LEVEL > 0
-# define DBG1(prefix, data, len) odDebug(prefix, data, len)
-#else
-# define DBG1(prefix, data, len)
-#endif
-
-#if DEBUG_LEVEL > 1
-# define DBG2(prefix, data, len) odDebug(prefix, data, len)
-#else
-# define DBG2(prefix, data, len)
-#endif
-
-/* ------------------------------------------------------------------------- */
-
-#if DEBUG_LEVEL > 0
-extern void odDebug(uchar prefix, uchar *data, uchar len);
-
-/* Try to find our control registers; ATMEL likes to rename these */
-
-#if defined UBRR
-# define ODDBG_UBRR UBRR
-#elif defined UBRRL
-# define ODDBG_UBRR UBRRL
-#elif defined UBRR0
-# define ODDBG_UBRR UBRR0
-#elif defined UBRR0L
-# define ODDBG_UBRR UBRR0L
-#endif
-
-#if defined UCR
-# define ODDBG_UCR UCR
-#elif defined UCSRB
-# define ODDBG_UCR UCSRB
-#elif defined UCSR0B
-# define ODDBG_UCR UCSR0B
-#endif
-
-#if defined TXEN
-# define ODDBG_TXEN TXEN
-#else
-# define ODDBG_TXEN TXEN0
-#endif
-
-#if defined USR
-# define ODDBG_USR USR
-#elif defined UCSRA
-# define ODDBG_USR UCSRA
-#elif defined UCSR0A
-# define ODDBG_USR UCSR0A
-#endif
-
-#if defined UDRE
-# define ODDBG_UDRE UDRE
-#else
-# define ODDBG_UDRE UDRE0
-#endif
-
-#if defined UDR
-# define ODDBG_UDR UDR
-#elif defined UDR0
-# define ODDBG_UDR UDR0
-#endif
-
-static inline void odDebugInit(void)
-{
- ODDBG_UCR |= (1<<ODDBG_TXEN);
- ODDBG_UBRR = F_CPU / (19200 * 16L) - 1;
-}
-#else
-# define odDebugInit()
-#endif
-
-/* ------------------------------------------------------------------------- */
-
-#endif /* __oddebug_h_included__ */
+++ /dev/null
-/* Name: usbconfig.h
- * Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
- * Author: Christian Starkjohann
- * Creation Date: 2005-04-01
- * Tabsize: 4
- * Copyright: (c) 2005 by OBJECTIVE DEVELOPMENT Software GmbH
- * License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
- * This Revision: $Id: usbconfig-prototype.h 767 2009-08-22 11:39:22Z cs $
- */
-
-#ifndef __usbconfig_h_included__
-#define __usbconfig_h_included__
-
-/*
-General Description:
-This file is an example configuration (with inline documentation) for the USB
-driver. It configures V-USB for USB D+ connected to Port D bit 2 (which is
-also hardware interrupt 0 on many devices) and USB D- to Port D bit 4. You may
-wire the lines to any other port, as long as D+ is also wired to INT0 (or any
-other hardware interrupt, as long as it is the highest level interrupt, see
-section at the end of this file).
-+ To create your own usbconfig.h file, copy this file to your project's
-+ firmware source directory) and rename it to "usbconfig.h".
-+ Then edit it accordingly.
-*/
-
-/* ---------------------------- Hardware Config ---------------------------- */
-
-#define USB_CFG_IOPORTNAME D
-/* This is the port where the USB bus is connected. When you configure it to
- * "B", the registers PORTB, PINB and DDRB will be used.
- */
-#define USB_CFG_DMINUS_BIT 4
-/* This is the bit number in USB_CFG_IOPORT where the USB D- line is connected.
- * This may be any bit in the port.
- */
-#define USB_CFG_DPLUS_BIT 2
-/* This is the bit number in USB_CFG_IOPORT where the USB D+ line is connected.
- * This may be any bit in the port. Please note that D+ must also be connected
- * to interrupt pin INT0! [You can also use other interrupts, see section
- * "Optional MCU Description" below, or you can connect D- to the interrupt, as
- * it is required if you use the USB_COUNT_SOF feature. If you use D- for the
- * interrupt, the USB interrupt will also be triggered at Start-Of-Frame
- * markers every millisecond.]
- */
-#define USB_CFG_CLOCK_KHZ (F_CPU/1000)
-/* Clock rate of the AVR in kHz. Legal values are 12000, 12800, 15000, 16000,
- * 16500 and 20000. The 12.8 MHz and 16.5 MHz versions of the code require no
- * crystal, they tolerate +/- 1% deviation from the nominal frequency. All
- * other rates require a precision of 2000 ppm and thus a crystal!
- * Default if not specified: 12 MHz
- */
-#define USB_CFG_CHECK_CRC 0
-/* Define this to 1 if you want that the driver checks integrity of incoming
- * data packets (CRC checks). CRC checks cost quite a bit of code size and are
- * currently only available for 18 MHz crystal clock. You must choose
- * USB_CFG_CLOCK_KHZ = 18000 if you enable this option.
- */
-
-/* ----------------------- Optional Hardware Config ------------------------ */
-
-/* #define USB_CFG_PULLUP_IOPORTNAME D */
-/* If you connect the 1.5k pullup resistor from D- to a port pin instead of
- * V+, you can connect and disconnect the device from firmware by calling
- * the macros usbDeviceConnect() and usbDeviceDisconnect() (see usbdrv.h).
- * This constant defines the port on which the pullup resistor is connected.
- */
-/* #define USB_CFG_PULLUP_BIT 4 */
-/* This constant defines the bit number in USB_CFG_PULLUP_IOPORT (defined
- * above) where the 1.5k pullup resistor is connected. See description
- * above for details.
- */
-
-/* --------------------------- Functional Range ---------------------------- */
-
-#define USB_CFG_HAVE_INTRIN_ENDPOINT 0
-/* Define this to 1 if you want to compile a version with two endpoints: The
- * default control endpoint 0 and an interrupt-in endpoint (any other endpoint
- * number).
- */
-#define USB_CFG_HAVE_INTRIN_ENDPOINT3 0
-/* Define this to 1 if you want to compile a version with three endpoints: The
- * default control endpoint 0, an interrupt-in endpoint 3 (or the number
- * configured below) and a catch-all default interrupt-in endpoint as above.
- * You must also define USB_CFG_HAVE_INTRIN_ENDPOINT to 1 for this feature.
- */
-#define USB_CFG_EP3_NUMBER 3
-/* If the so-called endpoint 3 is used, it can now be configured to any other
- * endpoint number (except 0) with this macro. Default if undefined is 3.
- */
-/* #define USB_INITIAL_DATATOKEN USBPID_DATA1 */
-/* The above macro defines the startup condition for data toggling on the
- * interrupt/bulk endpoints 1 and 3. Defaults to USBPID_DATA1.
- * Since the token is toggled BEFORE sending any data, the first packet is
- * sent with the oposite value of this configuration!
- */
-#define USB_CFG_IMPLEMENT_HALT 0
-/* Define this to 1 if you also want to implement the ENDPOINT_HALT feature
- * for endpoint 1 (interrupt endpoint). Although you may not need this feature,
- * it is required by the standard. We have made it a config option because it
- * bloats the code considerably.
- */
-#define USB_CFG_SUPPRESS_INTR_CODE 0
-/* Define this to 1 if you want to declare interrupt-in endpoints, but don't
- * want to send any data over them. If this macro is defined to 1, functions
- * usbSetInterrupt() and usbSetInterrupt3() are omitted. This is useful if
- * you need the interrupt-in endpoints in order to comply to an interface
- * (e.g. HID), but never want to send any data. This option saves a couple
- * of bytes in flash memory and the transmit buffers in RAM.
- */
-#define USB_CFG_INTR_POLL_INTERVAL 10
-/* If you compile a version with endpoint 1 (interrupt-in), this is the poll
- * interval. The value is in milliseconds and must not be less than 10 ms for
- * low speed devices.
- */
-#define USB_CFG_IS_SELF_POWERED 0
-/* Define this to 1 if the device has its own power supply. Set it to 0 if the
- * device is powered from the USB bus.
- */
-#define USB_CFG_MAX_BUS_POWER 100
-/* Set this variable to the maximum USB bus power consumption of your device.
- * The value is in milliamperes. [It will be divided by two since USB
- * communicates power requirements in units of 2 mA.]
- */
-#define USB_CFG_IMPLEMENT_FN_WRITE 0
-/* Set this to 1 if you want usbFunctionWrite() to be called for control-out
- * transfers. Set it to 0 if you don't need it and want to save a couple of
- * bytes.
- */
-#define USB_CFG_IMPLEMENT_FN_READ 0
-/* Set this to 1 if you need to send control replies which are generated
- * "on the fly" when usbFunctionRead() is called. If you only want to send
- * data from a static buffer, set it to 0 and return the data from
- * usbFunctionSetup(). This saves a couple of bytes.
- */
-#define USB_CFG_IMPLEMENT_FN_WRITEOUT 0
-/* Define this to 1 if you want to use interrupt-out (or bulk out) endpoints.
- * You must implement the function usbFunctionWriteOut() which receives all
- * interrupt/bulk data sent to any endpoint other than 0. The endpoint number
- * can be found in 'usbRxToken'.
- */
-#define USB_CFG_HAVE_FLOWCONTROL 0
-/* Define this to 1 if you want flowcontrol over USB data. See the definition
- * of the macros usbDisableAllRequests() and usbEnableAllRequests() in
- * usbdrv.h.
- */
-#define USB_CFG_LONG_TRANSFERS 0
-/* Define this to 1 if you want to send/receive blocks of more than 254 bytes
- * in a single control-in or control-out transfer. Note that the capability
- * for long transfers increases the driver size.
- */
-/* #define USB_RX_USER_HOOK(data, len) if(usbRxToken == (uchar)USBPID_SETUP) blinkLED(); */
-/* This macro is a hook if you want to do unconventional things. If it is
- * defined, it's inserted at the beginning of received message processing.
- * If you eat the received message and don't want default processing to
- * proceed, do a return after doing your things. One possible application
- * (besides debugging) is to flash a status LED on each packet.
- */
-/* #define USB_RESET_HOOK(resetStarts) if(!resetStarts){hadUsbReset();} */
-/* This macro is a hook if you need to know when an USB RESET occurs. It has
- * one parameter which distinguishes between the start of RESET state and its
- * end.
- */
-/* #define USB_SET_ADDRESS_HOOK() hadAddressAssigned(); */
-/* This macro (if defined) is executed when a USB SET_ADDRESS request was
- * received.
- */
-#define USB_COUNT_SOF 0
-/* define this macro to 1 if you need the global variable "usbSofCount" which
- * counts SOF packets. This feature requires that the hardware interrupt is
- * connected to D- instead of D+.
- */
-/* #ifdef __ASSEMBLER__
- * macro myAssemblerMacro
- * in YL, TCNT0
- * sts timer0Snapshot, YL
- * endm
- * #endif
- * #define USB_SOF_HOOK myAssemblerMacro
- * This macro (if defined) is executed in the assembler module when a
- * Start Of Frame condition is detected. It is recommended to define it to
- * the name of an assembler macro which is defined here as well so that more
- * than one assembler instruction can be used. The macro may use the register
- * YL and modify SREG. If it lasts longer than a couple of cycles, USB messages
- * immediately after an SOF pulse may be lost and must be retried by the host.
- * What can you do with this hook? Since the SOF signal occurs exactly every
- * 1 ms (unless the host is in sleep mode), you can use it to tune OSCCAL in
- * designs running on the internal RC oscillator.
- * Please note that Start Of Frame detection works only if D- is wired to the
- * interrupt, not D+. THIS IS DIFFERENT THAN MOST EXAMPLES!
- */
-#define USB_CFG_CHECK_DATA_TOGGLING 0
-/* define this macro to 1 if you want to filter out duplicate data packets
- * sent by the host. Duplicates occur only as a consequence of communication
- * errors, when the host does not receive an ACK. Please note that you need to
- * implement the filtering yourself in usbFunctionWriteOut() and
- * usbFunctionWrite(). Use the global usbCurrentDataToken and a static variable
- * for each control- and out-endpoint to check for duplicate packets.
- */
-#define USB_CFG_HAVE_MEASURE_FRAME_LENGTH 0
-/* define this macro to 1 if you want the function usbMeasureFrameLength()
- * compiled in. This function can be used to calibrate the AVR's RC oscillator.
- */
-#define USB_USE_FAST_CRC 0
-/* The assembler module has two implementations for the CRC algorithm. One is
- * faster, the other is smaller. This CRC routine is only used for transmitted
- * messages where timing is not critical. The faster routine needs 31 cycles
- * per byte while the smaller one needs 61 to 69 cycles. The faster routine
- * may be worth the 32 bytes bigger code size if you transmit lots of data and
- * run the AVR close to its limit.
- */
-
-/* -------------------------- Device Description --------------------------- */
-
-#define USB_CFG_VENDOR_ID 0xc0, 0x16 /* = 0x16c0 = 5824 = voti.nl */
-/* USB vendor ID for the device, low byte first. If you have registered your
- * own Vendor ID, define it here. Otherwise you may use one of obdev's free
- * shared VID/PID pairs. Be sure to read USB-IDs-for-free.txt for rules!
- * *** IMPORTANT NOTE ***
- * This template uses obdev's shared VID/PID pair for Vendor Class devices
- * with libusb: 0x16c0/0x5dc. Use this VID/PID pair ONLY if you understand
- * the implications!
- */
-#define USB_CFG_DEVICE_ID 0xdc, 0x05 /* = 0x05dc = 1500 */
-/* This is the ID of the product, low byte first. It is interpreted in the
- * scope of the vendor ID. If you have registered your own VID with usb.org
- * or if you have licensed a PID from somebody else, define it here. Otherwise
- * you may use one of obdev's free shared VID/PID pairs. See the file
- * USB-IDs-for-free.txt for details!
- * *** IMPORTANT NOTE ***
- * This template uses obdev's shared VID/PID pair for Vendor Class devices
- * with libusb: 0x16c0/0x5dc. Use this VID/PID pair ONLY if you understand
- * the implications!
- */
-#define USB_CFG_DEVICE_VERSION 0x00, 0x01
-/* Version number of the device: Minor number first, then major number.
- */
-#define USB_CFG_VENDOR_NAME 'o', 'b', 'd', 'e', 'v', '.', 'a', 't'
-#define USB_CFG_VENDOR_NAME_LEN 8
-/* These two values define the vendor name returned by the USB device. The name
- * must be given as a list of characters under single quotes. The characters
- * are interpreted as Unicode (UTF-16) entities.
- * If you don't want a vendor name string, undefine these macros.
- * ALWAYS define a vendor name containing your Internet domain name if you use
- * obdev's free shared VID/PID pair. See the file USB-IDs-for-free.txt for
- * details.
- */
-#define USB_CFG_DEVICE_NAME 'T', 'e', 'm', 'p', 'l', 'a', 't', 'e'
-#define USB_CFG_DEVICE_NAME_LEN 8
-/* Same as above for the device name. If you don't want a device name, undefine
- * the macros. See the file USB-IDs-for-free.txt before you assign a name if
- * you use a shared VID/PID.
- */
-/*#define USB_CFG_SERIAL_NUMBER 'N', 'o', 'n', 'e' */
-/*#define USB_CFG_SERIAL_NUMBER_LEN 0 */
-/* Same as above for the serial number. If you don't want a serial number,
- * undefine the macros.
- * It may be useful to provide the serial number through other means than at
- * compile time. See the section about descriptor properties below for how
- * to fine tune control over USB descriptors such as the string descriptor
- * for the serial number.
- */
-#define USB_CFG_DEVICE_CLASS 0xff /* set to 0 if deferred to interface */
-#define USB_CFG_DEVICE_SUBCLASS 0
-/* See USB specification if you want to conform to an existing device class.
- * Class 0xff is "vendor specific".
- */
-#define USB_CFG_INTERFACE_CLASS 0 /* define class here if not at device level */
-#define USB_CFG_INTERFACE_SUBCLASS 0
-#define USB_CFG_INTERFACE_PROTOCOL 0
-/* See USB specification if you want to conform to an existing device class or
- * protocol. The following classes must be set at interface level:
- * HID class is 3, no subclass and protocol required (but may be useful!)
- * CDC class is 2, use subclass 2 and protocol 1 for ACM
- */
-/* #define USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH 42 */
-/* Define this to the length of the HID report descriptor, if you implement
- * an HID device. Otherwise don't define it or define it to 0.
- * If you use this define, you must add a PROGMEM character array named
- * "usbHidReportDescriptor" to your code which contains the report descriptor.
- * Don't forget to keep the array and this define in sync!
- */
-
-/* #define USB_PUBLIC static */
-/* Use the define above if you #include usbdrv.c instead of linking against it.
- * This technique saves a couple of bytes in flash memory.
- */
-
-/* ------------------- Fine Control over USB Descriptors ------------------- */
-/* If you don't want to use the driver's default USB descriptors, you can
- * provide our own. These can be provided as (1) fixed length static data in
- * flash memory, (2) fixed length static data in RAM or (3) dynamically at
- * runtime in the function usbFunctionDescriptor(). See usbdrv.h for more
- * information about this function.
- * Descriptor handling is configured through the descriptor's properties. If
- * no properties are defined or if they are 0, the default descriptor is used.
- * Possible properties are:
- * + USB_PROP_IS_DYNAMIC: The data for the descriptor should be fetched
- * at runtime via usbFunctionDescriptor(). If the usbMsgPtr mechanism is
- * used, the data is in FLASH by default. Add property USB_PROP_IS_RAM if
- * you want RAM pointers.
- * + USB_PROP_IS_RAM: The data returned by usbFunctionDescriptor() or found
- * in static memory is in RAM, not in flash memory.
- * + USB_PROP_LENGTH(len): If the data is in static memory (RAM or flash),
- * the driver must know the descriptor's length. The descriptor itself is
- * found at the address of a well known identifier (see below).
- * List of static descriptor names (must be declared PROGMEM if in flash):
- * char usbDescriptorDevice[];
- * char usbDescriptorConfiguration[];
- * char usbDescriptorHidReport[];
- * char usbDescriptorString0[];
- * int usbDescriptorStringVendor[];
- * int usbDescriptorStringDevice[];
- * int usbDescriptorStringSerialNumber[];
- * Other descriptors can't be provided statically, they must be provided
- * dynamically at runtime.
- *
- * Descriptor properties are or-ed or added together, e.g.:
- * #define USB_CFG_DESCR_PROPS_DEVICE (USB_PROP_IS_RAM | USB_PROP_LENGTH(18))
- *
- * The following descriptors are defined:
- * USB_CFG_DESCR_PROPS_DEVICE
- * USB_CFG_DESCR_PROPS_CONFIGURATION
- * USB_CFG_DESCR_PROPS_STRINGS
- * USB_CFG_DESCR_PROPS_STRING_0
- * USB_CFG_DESCR_PROPS_STRING_VENDOR
- * USB_CFG_DESCR_PROPS_STRING_PRODUCT
- * USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER
- * USB_CFG_DESCR_PROPS_HID
- * USB_CFG_DESCR_PROPS_HID_REPORT
- * USB_CFG_DESCR_PROPS_UNKNOWN (for all descriptors not handled by the driver)
- *
- * Note about string descriptors: String descriptors are not just strings, they
- * are Unicode strings prefixed with a 2 byte header. Example:
- * int serialNumberDescriptor[] = {
- * USB_STRING_DESCRIPTOR_HEADER(6),
- * 'S', 'e', 'r', 'i', 'a', 'l'
- * };
- */
-
-#define USB_CFG_DESCR_PROPS_DEVICE 0
-#define USB_CFG_DESCR_PROPS_CONFIGURATION 0
-#define USB_CFG_DESCR_PROPS_STRINGS 0
-#define USB_CFG_DESCR_PROPS_STRING_0 0
-#define USB_CFG_DESCR_PROPS_STRING_VENDOR 0
-#define USB_CFG_DESCR_PROPS_STRING_PRODUCT 0
-#define USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER 0
-#define USB_CFG_DESCR_PROPS_HID 0
-#define USB_CFG_DESCR_PROPS_HID_REPORT 0
-#define USB_CFG_DESCR_PROPS_UNKNOWN 0
-
-/* ----------------------- Optional MCU Description ------------------------ */
-
-/* The following configurations have working defaults in usbdrv.h. You
- * usually don't need to set them explicitly. Only if you want to run
- * the driver on a device which is not yet supported or with a compiler
- * which is not fully supported (such as IAR C) or if you use a differnt
- * interrupt than INT0, you may have to define some of these.
- */
-/* #define USB_INTR_CFG MCUCR */
-/* #define USB_INTR_CFG_SET ((1 << ISC00) | (1 << ISC01)) */
-/* #define USB_INTR_CFG_CLR 0 */
-/* #define USB_INTR_ENABLE GIMSK */
-/* #define USB_INTR_ENABLE_BIT INT0 */
-/* #define USB_INTR_PENDING GIFR */
-/* #define USB_INTR_PENDING_BIT INTF0 */
-/* #define USB_INTR_VECTOR SIG_INTERRUPT0 */
-
-#endif /* __usbconfig_h_included__ */
+++ /dev/null
-/* Name: usbdrv.c
- * Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
- * Author: Christian Starkjohann
- * Creation Date: 2004-12-29
- * Tabsize: 4
- * Copyright: (c) 2005 by OBJECTIVE DEVELOPMENT Software GmbH
- * License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
- * This Revision: $Id: usbdrv.c 763 2009-08-22 10:27:24Z cs $
- */
-
-#include "usbportability.h"
-#include "usbdrv.h"
-#include "oddebug.h"
-
-/*
-General Description:
-This module implements the C-part of the USB driver. See usbdrv.h for a
-documentation of the entire driver.
-*/
-
-/* ------------------------------------------------------------------------- */
-
-/* raw USB registers / interface to assembler code: */
-uchar usbRxBuf[2*USB_BUFSIZE]; /* raw RX buffer: PID, 8 bytes data, 2 bytes CRC */
-uchar usbInputBufOffset; /* offset in usbRxBuf used for low level receiving */
-uchar usbDeviceAddr; /* assigned during enumeration, defaults to 0 */
-uchar usbNewDeviceAddr; /* device ID which should be set after status phase */
-uchar usbConfiguration; /* currently selected configuration. Administered by driver, but not used */
-volatile schar usbRxLen; /* = 0; number of bytes in usbRxBuf; 0 means free, -1 for flow control */
-uchar usbCurrentTok; /* last token received or endpoint number for last OUT token if != 0 */
-uchar usbRxToken; /* token for data we received; or endpont number for last OUT */
-volatile uchar usbTxLen = USBPID_NAK; /* number of bytes to transmit with next IN token or handshake token */
-uchar usbTxBuf[USB_BUFSIZE];/* data to transmit with next IN, free if usbTxLen contains handshake token */
-#if USB_COUNT_SOF
-volatile uchar usbSofCount; /* incremented by assembler module every SOF */
-#endif
-#if USB_CFG_HAVE_INTRIN_ENDPOINT && !USB_CFG_SUPPRESS_INTR_CODE
-usbTxStatus_t usbTxStatus1;
-# if USB_CFG_HAVE_INTRIN_ENDPOINT3
-usbTxStatus_t usbTxStatus3;
-# endif
-#endif
-#if USB_CFG_CHECK_DATA_TOGGLING
-uchar usbCurrentDataToken;/* when we check data toggling to ignore duplicate packets */
-#endif
-
-/* USB status registers / not shared with asm code */
-uchar *usbMsgPtr; /* data to transmit next -- ROM or RAM address */
-static usbMsgLen_t usbMsgLen = USB_NO_MSG; /* remaining number of bytes */
-static uchar usbMsgFlags; /* flag values see below */
-
-#define USB_FLG_MSGPTR_IS_ROM (1<<6)
-#define USB_FLG_USE_USER_RW (1<<7)
-
-/*
-optimizing hints:
-- do not post/pre inc/dec integer values in operations
-- assign value of USB_READ_FLASH() to register variables and don't use side effects in arg
-- use narrow scope for variables which should be in X/Y/Z register
-- assign char sized expressions to variables to force 8 bit arithmetics
-*/
-
-/* -------------------------- String Descriptors --------------------------- */
-
-#if USB_CFG_DESCR_PROPS_STRINGS == 0
-
-#if USB_CFG_DESCR_PROPS_STRING_0 == 0
-#undef USB_CFG_DESCR_PROPS_STRING_0
-#define USB_CFG_DESCR_PROPS_STRING_0 sizeof(usbDescriptorString0)
-PROGMEM char usbDescriptorString0[] = { /* language descriptor */
- 4, /* sizeof(usbDescriptorString0): length of descriptor in bytes */
- 3, /* descriptor type */
- 0x09, 0x04, /* language index (0x0409 = US-English) */
-};
-#endif
-
-#if USB_CFG_DESCR_PROPS_STRING_VENDOR == 0 && USB_CFG_VENDOR_NAME_LEN
-#undef USB_CFG_DESCR_PROPS_STRING_VENDOR
-#define USB_CFG_DESCR_PROPS_STRING_VENDOR sizeof(usbDescriptorStringVendor)
-PROGMEM int usbDescriptorStringVendor[] = {
- USB_STRING_DESCRIPTOR_HEADER(USB_CFG_VENDOR_NAME_LEN),
- USB_CFG_VENDOR_NAME
-};
-#endif
-
-#if USB_CFG_DESCR_PROPS_STRING_PRODUCT == 0 && USB_CFG_DEVICE_NAME_LEN
-#undef USB_CFG_DESCR_PROPS_STRING_PRODUCT
-#define USB_CFG_DESCR_PROPS_STRING_PRODUCT sizeof(usbDescriptorStringDevice)
-PROGMEM int usbDescriptorStringDevice[] = {
- USB_STRING_DESCRIPTOR_HEADER(USB_CFG_DEVICE_NAME_LEN),
- USB_CFG_DEVICE_NAME
-};
-#endif
-
-#if USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER == 0 && USB_CFG_SERIAL_NUMBER_LEN
-#undef USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER
-#define USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER sizeof(usbDescriptorStringSerialNumber)
-PROGMEM int usbDescriptorStringSerialNumber[] = {
- USB_STRING_DESCRIPTOR_HEADER(USB_CFG_SERIAL_NUMBER_LEN),
- USB_CFG_SERIAL_NUMBER
-};
-#endif
-
-#endif /* USB_CFG_DESCR_PROPS_STRINGS == 0 */
-
-/* --------------------------- Device Descriptor --------------------------- */
-
-#if USB_CFG_DESCR_PROPS_DEVICE == 0
-#undef USB_CFG_DESCR_PROPS_DEVICE
-#define USB_CFG_DESCR_PROPS_DEVICE sizeof(usbDescriptorDevice)
-PROGMEM char usbDescriptorDevice[] = { /* USB device descriptor */
- 18, /* sizeof(usbDescriptorDevice): length of descriptor in bytes */
- USBDESCR_DEVICE, /* descriptor type */
- 0x10, 0x01, /* USB version supported */
- USB_CFG_DEVICE_CLASS,
- USB_CFG_DEVICE_SUBCLASS,
- 0, /* protocol */
- 8, /* max packet size */
- /* the following two casts affect the first byte of the constant only, but
- * that's sufficient to avoid a warning with the default values.
- */
- (char)USB_CFG_VENDOR_ID,/* 2 bytes */
- (char)USB_CFG_DEVICE_ID,/* 2 bytes */
- USB_CFG_DEVICE_VERSION, /* 2 bytes */
- USB_CFG_DESCR_PROPS_STRING_VENDOR != 0 ? 1 : 0, /* manufacturer string index */
- USB_CFG_DESCR_PROPS_STRING_PRODUCT != 0 ? 2 : 0, /* product string index */
- USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER != 0 ? 3 : 0, /* serial number string index */
- 1, /* number of configurations */
-};
-#endif
-
-/* ----------------------- Configuration Descriptor ------------------------ */
-
-#if USB_CFG_DESCR_PROPS_HID_REPORT != 0 && USB_CFG_DESCR_PROPS_HID == 0
-#undef USB_CFG_DESCR_PROPS_HID
-#define USB_CFG_DESCR_PROPS_HID 9 /* length of HID descriptor in config descriptor below */
-#endif
-
-#if USB_CFG_DESCR_PROPS_CONFIGURATION == 0
-#undef USB_CFG_DESCR_PROPS_CONFIGURATION
-#define USB_CFG_DESCR_PROPS_CONFIGURATION sizeof(usbDescriptorConfiguration)
-PROGMEM char usbDescriptorConfiguration[] = { /* USB configuration descriptor */
- 9, /* sizeof(usbDescriptorConfiguration): length of descriptor in bytes */
- USBDESCR_CONFIG, /* descriptor type */
- 18 + 7 * USB_CFG_HAVE_INTRIN_ENDPOINT + 7 * USB_CFG_HAVE_INTRIN_ENDPOINT3 +
- (USB_CFG_DESCR_PROPS_HID & 0xff), 0,
- /* total length of data returned (including inlined descriptors) */
- 1, /* number of interfaces in this configuration */
- 1, /* index of this configuration */
- 0, /* configuration name string index */
-#if USB_CFG_IS_SELF_POWERED
- (1 << 7) | USBATTR_SELFPOWER, /* attributes */
-#else
- (1 << 7), /* attributes */
-#endif
- USB_CFG_MAX_BUS_POWER/2, /* max USB current in 2mA units */
-/* interface descriptor follows inline: */
- 9, /* sizeof(usbDescrInterface): length of descriptor in bytes */
- USBDESCR_INTERFACE, /* descriptor type */
- 0, /* index of this interface */
- 0, /* alternate setting for this interface */
- USB_CFG_HAVE_INTRIN_ENDPOINT + USB_CFG_HAVE_INTRIN_ENDPOINT3, /* endpoints excl 0: number of endpoint descriptors to follow */
- USB_CFG_INTERFACE_CLASS,
- USB_CFG_INTERFACE_SUBCLASS,
- USB_CFG_INTERFACE_PROTOCOL,
- 0, /* string index for interface */
-#if (USB_CFG_DESCR_PROPS_HID & 0xff) /* HID descriptor */
- 9, /* sizeof(usbDescrHID): length of descriptor in bytes */
- USBDESCR_HID, /* descriptor type: HID */
- 0x01, 0x01, /* BCD representation of HID version */
- 0x00, /* target country code */
- 0x01, /* number of HID Report (or other HID class) Descriptor infos to follow */
- 0x22, /* descriptor type: report */
- USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH, 0, /* total length of report descriptor */
-#endif
-#if USB_CFG_HAVE_INTRIN_ENDPOINT /* endpoint descriptor for endpoint 1 */
- 7, /* sizeof(usbDescrEndpoint) */
- USBDESCR_ENDPOINT, /* descriptor type = endpoint */
- (char)0x81, /* IN endpoint number 1 */
- 0x03, /* attrib: Interrupt endpoint */
- 8, 0, /* maximum packet size */
- USB_CFG_INTR_POLL_INTERVAL, /* in ms */
-#endif
-#if USB_CFG_HAVE_INTRIN_ENDPOINT3 /* endpoint descriptor for endpoint 3 */
- 7, /* sizeof(usbDescrEndpoint) */
- USBDESCR_ENDPOINT, /* descriptor type = endpoint */
- (char)0x83, /* IN endpoint number 1 */
- 0x03, /* attrib: Interrupt endpoint */
- 8, 0, /* maximum packet size */
- USB_CFG_INTR_POLL_INTERVAL, /* in ms */
-#endif
-};
-#endif
-
-/* ------------------------------------------------------------------------- */
-
-static inline void usbResetDataToggling(void)
-{
-#if USB_CFG_HAVE_INTRIN_ENDPOINT && !USB_CFG_SUPPRESS_INTR_CODE
- USB_SET_DATATOKEN1(USB_INITIAL_DATATOKEN); /* reset data toggling for interrupt endpoint */
-# if USB_CFG_HAVE_INTRIN_ENDPOINT3
- USB_SET_DATATOKEN3(USB_INITIAL_DATATOKEN); /* reset data toggling for interrupt endpoint */
-# endif
-#endif
-}
-
-static inline void usbResetStall(void)
-{
-#if USB_CFG_IMPLEMENT_HALT && USB_CFG_HAVE_INTRIN_ENDPOINT
- usbTxLen1 = USBPID_NAK;
-#if USB_CFG_HAVE_INTRIN_ENDPOINT3
- usbTxLen3 = USBPID_NAK;
-#endif
-#endif
-}
-
-/* ------------------------------------------------------------------------- */
-
-#if !USB_CFG_SUPPRESS_INTR_CODE
-#if USB_CFG_HAVE_INTRIN_ENDPOINT
-static void usbGenericSetInterrupt(uchar *data, uchar len, usbTxStatus_t *txStatus)
-{
-uchar *p;
-char i;
-
-#if USB_CFG_IMPLEMENT_HALT
- if(usbTxLen1 == USBPID_STALL)
- return;
-#endif
- if(txStatus->len & 0x10){ /* packet buffer was empty */
- txStatus->buffer[0] ^= USBPID_DATA0 ^ USBPID_DATA1; /* toggle token */
- }else{
- txStatus->len = USBPID_NAK; /* avoid sending outdated (overwritten) interrupt data */
- }
- p = txStatus->buffer + 1;
- i = len;
- do{ /* if len == 0, we still copy 1 byte, but that's no problem */
- *p++ = *data++;
- }while(--i > 0); /* loop control at the end is 2 bytes shorter than at beginning */
- usbCrc16Append(&txStatus->buffer[1], len);
- txStatus->len = len + 4; /* len must be given including sync byte */
- DBG2(0x21 + (((int)txStatus >> 3) & 3), txStatus->buffer, len + 3);
-}
-
-USB_PUBLIC void usbSetInterrupt(uchar *data, uchar len)
-{
- usbGenericSetInterrupt(data, len, &usbTxStatus1);
-}
-#endif
-
-#if USB_CFG_HAVE_INTRIN_ENDPOINT3
-USB_PUBLIC void usbSetInterrupt3(uchar *data, uchar len)
-{
- usbGenericSetInterrupt(data, len, &usbTxStatus3);
-}
-#endif
-#endif /* USB_CFG_SUPPRESS_INTR_CODE */
-
-/* ------------------ utilities for code following below ------------------- */
-
-/* Use defines for the switch statement so that we can choose between an
- * if()else if() and a switch/case based implementation. switch() is more
- * efficient for a LARGE set of sequential choices, if() is better in all other
- * cases.
- */
-#if USB_CFG_USE_SWITCH_STATEMENT
-# define SWITCH_START(cmd) switch(cmd){{
-# define SWITCH_CASE(value) }break; case (value):{
-# define SWITCH_CASE2(v1,v2) }break; case (v1): case(v2):{
-# define SWITCH_CASE3(v1,v2,v3) }break; case (v1): case(v2): case(v3):{
-# define SWITCH_DEFAULT }break; default:{
-# define SWITCH_END }}
-#else
-# define SWITCH_START(cmd) {uchar _cmd = cmd; if(0){
-# define SWITCH_CASE(value) }else if(_cmd == (value)){
-# define SWITCH_CASE2(v1,v2) }else if(_cmd == (v1) || _cmd == (v2)){
-# define SWITCH_CASE3(v1,v2,v3) }else if(_cmd == (v1) || _cmd == (v2) || (_cmd == v3)){
-# define SWITCH_DEFAULT }else{
-# define SWITCH_END }}
-#endif
-
-#ifndef USB_RX_USER_HOOK
-#define USB_RX_USER_HOOK(data, len)
-#endif
-#ifndef USB_SET_ADDRESS_HOOK
-#define USB_SET_ADDRESS_HOOK()
-#endif
-
-/* ------------------------------------------------------------------------- */
-
-/* We use if() instead of #if in the macro below because #if can't be used
- * in macros and the compiler optimizes constant conditions anyway.
- * This may cause problems with undefined symbols if compiled without
- * optimizing!
- */
-#define GET_DESCRIPTOR(cfgProp, staticName) \
- if(cfgProp){ \
- if((cfgProp) & USB_PROP_IS_RAM) \
- flags = 0; \
- if((cfgProp) & USB_PROP_IS_DYNAMIC){ \
- len = usbFunctionDescriptor(rq); \
- }else{ \
- len = USB_PROP_LENGTH(cfgProp); \
- usbMsgPtr = (uchar *)(staticName); \
- } \
- }
-
-/* usbDriverDescriptor() is similar to usbFunctionDescriptor(), but used
- * internally for all types of descriptors.
- */
-static inline usbMsgLen_t usbDriverDescriptor(usbRequest_t *rq)
-{
-usbMsgLen_t len = 0;
-uchar flags = USB_FLG_MSGPTR_IS_ROM;
-
- SWITCH_START(rq->wValue.bytes[1])
- SWITCH_CASE(USBDESCR_DEVICE) /* 1 */
- GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_DEVICE, usbDescriptorDevice)
- SWITCH_CASE(USBDESCR_CONFIG) /* 2 */
- GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_CONFIGURATION, usbDescriptorConfiguration)
- SWITCH_CASE(USBDESCR_STRING) /* 3 */
-#if USB_CFG_DESCR_PROPS_STRINGS & USB_PROP_IS_DYNAMIC
- if(USB_CFG_DESCR_PROPS_STRINGS & USB_PROP_IS_RAM)
- flags = 0;
- len = usbFunctionDescriptor(rq);
-#else /* USB_CFG_DESCR_PROPS_STRINGS & USB_PROP_IS_DYNAMIC */
- SWITCH_START(rq->wValue.bytes[0])
- SWITCH_CASE(0)
- GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_STRING_0, usbDescriptorString0)
- SWITCH_CASE(1)
- GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_STRING_VENDOR, usbDescriptorStringVendor)
- SWITCH_CASE(2)
- GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_STRING_PRODUCT, usbDescriptorStringDevice)
- SWITCH_CASE(3)
- GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER, usbDescriptorStringSerialNumber)
- SWITCH_DEFAULT
- if(USB_CFG_DESCR_PROPS_UNKNOWN & USB_PROP_IS_DYNAMIC){
- len = usbFunctionDescriptor(rq);
- }
- SWITCH_END
-#endif /* USB_CFG_DESCR_PROPS_STRINGS & USB_PROP_IS_DYNAMIC */
-#if USB_CFG_DESCR_PROPS_HID_REPORT /* only support HID descriptors if enabled */
- SWITCH_CASE(USBDESCR_HID) /* 0x21 */
- GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_HID, usbDescriptorConfiguration + 18)
- SWITCH_CASE(USBDESCR_HID_REPORT)/* 0x22 */
- GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_HID_REPORT, usbDescriptorHidReport)
-#endif
- SWITCH_DEFAULT
- if(USB_CFG_DESCR_PROPS_UNKNOWN & USB_PROP_IS_DYNAMIC){
- len = usbFunctionDescriptor(rq);
- }
- SWITCH_END
- usbMsgFlags = flags;
- return len;
-}
-
-/* ------------------------------------------------------------------------- */
-
-/* usbDriverSetup() is similar to usbFunctionSetup(), but it's used for
- * standard requests instead of class and custom requests.
- */
-static inline usbMsgLen_t usbDriverSetup(usbRequest_t *rq)
-{
-uchar len = 0, *dataPtr = usbTxBuf + 9; /* there are 2 bytes free space at the end of the buffer */
-uchar value = rq->wValue.bytes[0];
-#if USB_CFG_IMPLEMENT_HALT
-uchar index = rq->wIndex.bytes[0];
-#endif
-
- dataPtr[0] = 0; /* default reply common to USBRQ_GET_STATUS and USBRQ_GET_INTERFACE */
- SWITCH_START(rq->bRequest)
- SWITCH_CASE(USBRQ_GET_STATUS) /* 0 */
- uchar recipient = rq->bmRequestType & USBRQ_RCPT_MASK; /* assign arith ops to variables to enforce byte size */
- if(USB_CFG_IS_SELF_POWERED && recipient == USBRQ_RCPT_DEVICE)
- dataPtr[0] = USB_CFG_IS_SELF_POWERED;
-#if USB_CFG_IMPLEMENT_HALT
- if(recipient == USBRQ_RCPT_ENDPOINT && index == 0x81) /* request status for endpoint 1 */
- dataPtr[0] = usbTxLen1 == USBPID_STALL;
-#endif
- dataPtr[1] = 0;
- len = 2;
-#if USB_CFG_IMPLEMENT_HALT
- SWITCH_CASE2(USBRQ_CLEAR_FEATURE, USBRQ_SET_FEATURE) /* 1, 3 */
- if(value == 0 && index == 0x81){ /* feature 0 == HALT for endpoint == 1 */
- usbTxLen1 = rq->bRequest == USBRQ_CLEAR_FEATURE ? USBPID_NAK : USBPID_STALL;
- usbResetDataToggling();
- }
-#endif
- SWITCH_CASE(USBRQ_SET_ADDRESS) /* 5 */
- usbNewDeviceAddr = value;
- USB_SET_ADDRESS_HOOK();
- SWITCH_CASE(USBRQ_GET_DESCRIPTOR) /* 6 */
- len = usbDriverDescriptor(rq);
- goto skipMsgPtrAssignment;
- SWITCH_CASE(USBRQ_GET_CONFIGURATION) /* 8 */
- dataPtr = &usbConfiguration; /* send current configuration value */
- len = 1;
- SWITCH_CASE(USBRQ_SET_CONFIGURATION) /* 9 */
- usbConfiguration = value;
- usbResetStall();
- SWITCH_CASE(USBRQ_GET_INTERFACE) /* 10 */
- len = 1;
-#if USB_CFG_HAVE_INTRIN_ENDPOINT && !USB_CFG_SUPPRESS_INTR_CODE
- SWITCH_CASE(USBRQ_SET_INTERFACE) /* 11 */
- usbResetDataToggling();
- usbResetStall();
-#endif
- SWITCH_DEFAULT /* 7=SET_DESCRIPTOR, 12=SYNC_FRAME */
- /* Should we add an optional hook here? */
- SWITCH_END
- usbMsgPtr = dataPtr;
-skipMsgPtrAssignment:
- return len;
-}
-
-/* ------------------------------------------------------------------------- */
-
-/* usbProcessRx() is called for every message received by the interrupt
- * routine. It distinguishes between SETUP and DATA packets and processes
- * them accordingly.
- */
-static inline void usbProcessRx(uchar *data, uchar len)
-{
-usbRequest_t *rq = (void *)data;
-
-/* usbRxToken can be:
- * 0x2d 00101101 (USBPID_SETUP for setup data)
- * 0xe1 11100001 (USBPID_OUT: data phase of setup transfer)
- * 0...0x0f for OUT on endpoint X
- */
- DBG2(0x10 + (usbRxToken & 0xf), data, len + 2); /* SETUP=1d, SETUP-DATA=11, OUTx=1x */
- USB_RX_USER_HOOK(data, len)
-#if USB_CFG_IMPLEMENT_FN_WRITEOUT
- if(usbRxToken < 0x10){ /* OUT to endpoint != 0: endpoint number in usbRxToken */
- usbFunctionWriteOut(data, len);
- return;
- }
-#endif
- if(usbRxToken == (uchar)USBPID_SETUP){
- if(len != 8) /* Setup size must be always 8 bytes. Ignore otherwise. */
- return;
- usbMsgLen_t replyLen;
- usbTxBuf[0] = USBPID_DATA0; /* initialize data toggling */
- usbTxLen = USBPID_NAK; /* abort pending transmit */
- usbMsgFlags = 0;
- uchar type = rq->bmRequestType & USBRQ_TYPE_MASK;
- if(type != USBRQ_TYPE_STANDARD){ /* standard requests are handled by driver */
- replyLen = usbFunctionSetup(data);
- }else{
- replyLen = usbDriverSetup(rq);
- }
-#if USB_CFG_IMPLEMENT_FN_READ || USB_CFG_IMPLEMENT_FN_WRITE
- if(replyLen == USB_NO_MSG){ /* use user-supplied read/write function */
- /* do some conditioning on replyLen, but on IN transfers only */
- if((rq->bmRequestType & USBRQ_DIR_MASK) != USBRQ_DIR_HOST_TO_DEVICE){
- if(sizeof(replyLen) < sizeof(rq->wLength.word)){ /* help compiler with optimizing */
- replyLen = rq->wLength.bytes[0];
- }else{
- replyLen = rq->wLength.word;
- }
- }
- usbMsgFlags = USB_FLG_USE_USER_RW;
- }else /* The 'else' prevents that we limit a replyLen of USB_NO_MSG to the maximum transfer len. */
-#endif
- if(sizeof(replyLen) < sizeof(rq->wLength.word)){ /* help compiler with optimizing */
- if(!rq->wLength.bytes[1] && replyLen > rq->wLength.bytes[0]) /* limit length to max */
- replyLen = rq->wLength.bytes[0];
- }else{
- if(replyLen > rq->wLength.word) /* limit length to max */
- replyLen = rq->wLength.word;
- }
- usbMsgLen = replyLen;
- }else{ /* usbRxToken must be USBPID_OUT, which means data phase of setup (control-out) */
-#if USB_CFG_IMPLEMENT_FN_WRITE
- if(usbMsgFlags & USB_FLG_USE_USER_RW){
- uchar rval = usbFunctionWrite(data, len);
- if(rval == 0xff){ /* an error occurred */
- usbTxLen = USBPID_STALL;
- }else if(rval != 0){ /* This was the final package */
- usbMsgLen = 0; /* answer with a zero-sized data packet */
- }
- }
-#endif
- }
-}
-
-/* ------------------------------------------------------------------------- */
-
-/* This function is similar to usbFunctionRead(), but it's also called for
- * data handled automatically by the driver (e.g. descriptor reads).
- */
-static uchar usbDeviceRead(uchar *data, uchar len)
-{
- if(len > 0){ /* don't bother app with 0 sized reads */
-#if USB_CFG_IMPLEMENT_FN_READ
- if(usbMsgFlags & USB_FLG_USE_USER_RW){
- len = usbFunctionRead(data, len);
- }else
-#endif
- {
- uchar i = len, *r = usbMsgPtr;
- if(usbMsgFlags & USB_FLG_MSGPTR_IS_ROM){ /* ROM data */
- do{
- uchar c = USB_READ_FLASH(r); /* assign to char size variable to enforce byte ops */
- *data++ = c;
- r++;
- }while(--i);
- }else{ /* RAM data */
- do{
- *data++ = *r++;
- }while(--i);
- }
- usbMsgPtr = r;
- }
- }
- return len;
-}
-
-/* ------------------------------------------------------------------------- */
-
-/* usbBuildTxBlock() is called when we have data to transmit and the
- * interrupt routine's transmit buffer is empty.
- */
-static inline void usbBuildTxBlock(void)
-{
-usbMsgLen_t wantLen;
-uchar len;
-
- wantLen = usbMsgLen;
- if(wantLen > 8)
- wantLen = 8;
- usbMsgLen -= wantLen;
- usbTxBuf[0] ^= USBPID_DATA0 ^ USBPID_DATA1; /* DATA toggling */
- len = usbDeviceRead(usbTxBuf + 1, wantLen);
- if(len <= 8){ /* valid data packet */
- usbCrc16Append(&usbTxBuf[1], len);
- len += 4; /* length including sync byte */
- if(len < 12) /* a partial package identifies end of message */
- usbMsgLen = USB_NO_MSG;
- }else{
- len = USBPID_STALL; /* stall the endpoint */
- usbMsgLen = USB_NO_MSG;
- }
- usbTxLen = len;
- DBG2(0x20, usbTxBuf, len-1);
-}
-
-/* ------------------------------------------------------------------------- */
-
-static inline void usbHandleResetHook(uchar notResetState)
-{
-#ifdef USB_RESET_HOOK
-static uchar wasReset;
-uchar isReset = !notResetState;
-
- if(wasReset != isReset){
- USB_RESET_HOOK(isReset);
- wasReset = isReset;
- }
-#endif
-}
-
-/* ------------------------------------------------------------------------- */
-
-USB_PUBLIC void usbPoll(void)
-{
-schar len;
-uchar i;
-
- len = usbRxLen - 3;
- if(len >= 0){
-/* We could check CRC16 here -- but ACK has already been sent anyway. If you
- * need data integrity checks with this driver, check the CRC in your app
- * code and report errors back to the host. Since the ACK was already sent,
- * retries must be handled on application level.
- * unsigned crc = usbCrc16(buffer + 1, usbRxLen - 3);
- */
- usbProcessRx(usbRxBuf + USB_BUFSIZE + 1 - usbInputBufOffset, len);
-#if USB_CFG_HAVE_FLOWCONTROL
- if(usbRxLen > 0) /* only mark as available if not inactivated */
- usbRxLen = 0;
-#else
- usbRxLen = 0; /* mark rx buffer as available */
-#endif
- }
- if(usbTxLen & 0x10){ /* transmit system idle */
- if(usbMsgLen != USB_NO_MSG){ /* transmit data pending? */
- usbBuildTxBlock();
- }
- }
- for(i = 20; i > 0; i--){
- uchar usbLineStatus = USBIN & USBMASK;
- if(usbLineStatus != 0) /* SE0 has ended */
- goto isNotReset;
- }
- /* RESET condition, called multiple times during reset */
- usbNewDeviceAddr = 0;
- usbDeviceAddr = 0;
- usbResetStall();
- DBG1(0xff, 0, 0);
-isNotReset:
- usbHandleResetHook(i);
-}
-
-/* ------------------------------------------------------------------------- */
-
-USB_PUBLIC void usbInit(void)
-{
-#if USB_INTR_CFG_SET != 0
- USB_INTR_CFG |= USB_INTR_CFG_SET;
-#endif
-#if USB_INTR_CFG_CLR != 0
- USB_INTR_CFG &= ~(USB_INTR_CFG_CLR);
-#endif
- USB_INTR_ENABLE |= (1 << USB_INTR_ENABLE_BIT);
- usbResetDataToggling();
-#if USB_CFG_HAVE_INTRIN_ENDPOINT && !USB_CFG_SUPPRESS_INTR_CODE
- usbTxLen1 = USBPID_NAK;
-#if USB_CFG_HAVE_INTRIN_ENDPOINT3
- usbTxLen3 = USBPID_NAK;
-#endif
-#endif
-}
-
-/* ------------------------------------------------------------------------- */
+++ /dev/null
-/* Name: usbdrv.h
- * Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
- * Author: Christian Starkjohann
- * Creation Date: 2004-12-29
- * Tabsize: 4
- * Copyright: (c) 2005 by OBJECTIVE DEVELOPMENT Software GmbH
- * License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
- * This Revision: $Id: usbdrv.h 769 2009-08-22 11:49:05Z cs $
- */
-
-#ifndef __usbdrv_h_included__
-#define __usbdrv_h_included__
-#include "usbconfig.h"
-#include "usbportability.h"
-
-/*
-Hardware Prerequisites:
-=======================
-USB lines D+ and D- MUST be wired to the same I/O port. We recommend that D+
-triggers the interrupt (best achieved by using INT0 for D+), but it is also
-possible to trigger the interrupt from D-. If D- is used, interrupts are also
-triggered by SOF packets. D- requires a pull-up of 1.5k to +3.5V (and the
-device must be powered at 3.5V) to identify as low-speed USB device. A
-pull-down or pull-up of 1M SHOULD be connected from D+ to +3.5V to prevent
-interference when no USB master is connected. If you use Zener diodes to limit
-the voltage on D+ and D-, you MUST use a pull-down resistor, not a pull-up.
-We use D+ as interrupt source and not D- because it does not trigger on
-keep-alive and RESET states. If you want to count keep-alive events with
-USB_COUNT_SOF, you MUST use D- as an interrupt source.
-
-As a compile time option, the 1.5k pull-up resistor on D- can be made
-switchable to allow the device to disconnect at will. See the definition of
-usbDeviceConnect() and usbDeviceDisconnect() further down in this file.
-
-Please adapt the values in usbconfig.h according to your hardware!
-
-The device MUST be clocked at exactly 12 MHz, 15 MHz, 16 MHz or 20 MHz
-or at 12.8 MHz resp. 16.5 MHz +/- 1%. See usbconfig-prototype.h for details.
-
-
-Limitations:
-============
-Robustness with respect to communication errors:
-The driver assumes error-free communication. It DOES check for errors in
-the PID, but does NOT check bit stuffing errors, SE0 in middle of a byte,
-token CRC (5 bit) and data CRC (16 bit). CRC checks can not be performed due
-to timing constraints: We must start sending a reply within 7 bit times.
-Bit stuffing and misplaced SE0 would have to be checked in real-time, but CPU
-performance does not permit that. The driver does not check Data0/Data1
-toggling, but application software can implement the check.
-
-Input characteristics:
-Since no differential receiver circuit is used, electrical interference
-robustness may suffer. The driver samples only one of the data lines with
-an ordinary I/O pin's input characteristics. However, since this is only a
-low speed USB implementation and the specification allows for 8 times the
-bit rate over the same hardware, we should be on the safe side. Even the spec
-requires detection of asymmetric states at high bit rate for SE0 detection.
-
-Number of endpoints:
-The driver supports the following endpoints:
-
-- Endpoint 0, the default control endpoint.
-- Any number of interrupt- or bulk-out endpoints. The data is sent to
- usbFunctionWriteOut() and USB_CFG_IMPLEMENT_FN_WRITEOUT must be defined
- to 1 to activate this feature. The endpoint number can be found in the
- global variable 'usbRxToken'.
-- One default interrupt- or bulk-in endpoint. This endpoint is used for
- interrupt- or bulk-in transfers which are not handled by any other endpoint.
- You must define USB_CFG_HAVE_INTRIN_ENDPOINT in order to activate this
- feature and call usbSetInterrupt() to send interrupt/bulk data.
-- One additional interrupt- or bulk-in endpoint. This was endpoint 3 in
- previous versions of this driver but can now be configured to any endpoint
- number. You must define USB_CFG_HAVE_INTRIN_ENDPOINT3 in order to activate
- this feature and call usbSetInterrupt3() to send interrupt/bulk data. The
- endpoint number can be set with USB_CFG_EP3_NUMBER.
-
-Please note that the USB standard forbids bulk endpoints for low speed devices!
-Most operating systems allow them anyway, but the AVR will spend 90% of the CPU
-time in the USB interrupt polling for bulk data.
-
-Maximum data payload:
-Data payload of control in and out transfers may be up to 254 bytes. In order
-to accept payload data of out transfers, you need to implement
-'usbFunctionWrite()'.
-
-USB Suspend Mode supply current:
-The USB standard limits power consumption to 500uA when the bus is in suspend
-mode. This is not a problem for self-powered devices since they don't need
-bus power anyway. Bus-powered devices can achieve this only by putting the
-CPU in sleep mode. The driver does not implement suspend handling by itself.
-However, the application may implement activity monitoring and wakeup from
-sleep. The host sends regular SE0 states on the bus to keep it active. These
-SE0 states can be detected by using D- as the interrupt source. Define
-USB_COUNT_SOF to 1 and use the global variable usbSofCount to check for bus
-activity.
-
-Operation without an USB master:
-The driver behaves neutral without connection to an USB master if D- reads
-as 1. To avoid spurious interrupts, we recommend a high impedance (e.g. 1M)
-pull-down or pull-up resistor on D+ (interrupt). If Zener diodes are used,
-use a pull-down. If D- becomes statically 0, the driver may block in the
-interrupt routine.
-
-Interrupt latency:
-The application must ensure that the USB interrupt is not disabled for more
-than 25 cycles (this is for 12 MHz, faster clocks allow longer latency).
-This implies that all interrupt routines must either be declared as "INTERRUPT"
-instead of "SIGNAL" (see "avr/signal.h") or that they are written in assembler
-with "sei" as the first instruction.
-
-Maximum interrupt duration / CPU cycle consumption:
-The driver handles all USB communication during the interrupt service
-routine. The routine will not return before an entire USB message is received
-and the reply is sent. This may be up to ca. 1200 cycles @ 12 MHz (= 100us) if
-the host conforms to the standard. The driver will consume CPU cycles for all
-USB messages, even if they address another (low-speed) device on the same bus.
-
-*/
-
-/* ------------------------------------------------------------------------- */
-/* --------------------------- Module Interface ---------------------------- */
-/* ------------------------------------------------------------------------- */
-
-#define USBDRV_VERSION 20090822
-/* This define uniquely identifies a driver version. It is a decimal number
- * constructed from the driver's release date in the form YYYYMMDD. If the
- * driver's behavior or interface changes, you can use this constant to
- * distinguish versions. If it is not defined, the driver's release date is
- * older than 2006-01-25.
- */
-
-
-#ifndef USB_PUBLIC
-#define USB_PUBLIC
-#endif
-/* USB_PUBLIC is used as declaration attribute for all functions exported by
- * the USB driver. The default is no attribute (see above). You may define it
- * to static either in usbconfig.h or from the command line if you include
- * usbdrv.c instead of linking against it. Including the C module of the driver
- * directly in your code saves a couple of bytes in flash memory.
- */
-
-#ifndef __ASSEMBLER__
-#ifndef uchar
-#define uchar unsigned char
-#endif
-#ifndef schar
-#define schar signed char
-#endif
-/* shortcuts for well defined 8 bit integer types */
-
-#if USB_CFG_LONG_TRANSFERS /* if more than 254 bytes transfer size required */
-# define usbMsgLen_t unsigned
-#else
-# define usbMsgLen_t uchar
-#endif
-/* usbMsgLen_t is the data type used for transfer lengths. By default, it is
- * defined to uchar, allowing a maximum of 254 bytes (255 is reserved for
- * USB_NO_MSG below). If the usbconfig.h defines USB_CFG_LONG_TRANSFERS to 1,
- * a 16 bit data type is used, allowing up to 16384 bytes (the rest is used
- * for flags in the descriptor configuration).
- */
-#define USB_NO_MSG ((usbMsgLen_t)-1) /* constant meaning "no message" */
-
-struct usbRequest; /* forward declaration */
-
-USB_PUBLIC void usbInit(void);
-/* This function must be called before interrupts are enabled and the main
- * loop is entered. We exepct that the PORT and DDR bits for D+ and D- have
- * not been changed from their default status (which is 0). If you have changed
- * them, set both back to 0 (configure them as input with no internal pull-up).
- */
-USB_PUBLIC void usbPoll(void);
-/* This function must be called at regular intervals from the main loop.
- * Maximum delay between calls is somewhat less than 50ms (USB timeout for
- * accepting a Setup message). Otherwise the device will not be recognized.
- * Please note that debug outputs through the UART take ~ 0.5ms per byte
- * at 19200 bps.
- */
-extern uchar *usbMsgPtr;
-/* This variable may be used to pass transmit data to the driver from the
- * implementation of usbFunctionWrite(). It is also used internally by the
- * driver for standard control requests.
- */
-USB_PUBLIC usbMsgLen_t usbFunctionSetup(uchar data[8]);
-/* This function is called when the driver receives a SETUP transaction from
- * the host which is not answered by the driver itself (in practice: class and
- * vendor requests). All control transfers start with a SETUP transaction where
- * the host communicates the parameters of the following (optional) data
- * transfer. The SETUP data is available in the 'data' parameter which can
- * (and should) be casted to 'usbRequest_t *' for a more user-friendly access
- * to parameters.
- *
- * If the SETUP indicates a control-in transfer, you should provide the
- * requested data to the driver. There are two ways to transfer this data:
- * (1) Set the global pointer 'usbMsgPtr' to the base of the static RAM data
- * block and return the length of the data in 'usbFunctionSetup()'. The driver
- * will handle the rest. Or (2) return USB_NO_MSG in 'usbFunctionSetup()'. The
- * driver will then call 'usbFunctionRead()' when data is needed. See the
- * documentation for usbFunctionRead() for details.
- *
- * If the SETUP indicates a control-out transfer, the only way to receive the
- * data from the host is through the 'usbFunctionWrite()' call. If you
- * implement this function, you must return USB_NO_MSG in 'usbFunctionSetup()'
- * to indicate that 'usbFunctionWrite()' should be used. See the documentation
- * of this function for more information. If you just want to ignore the data
- * sent by the host, return 0 in 'usbFunctionSetup()'.
- *
- * Note that calls to the functions usbFunctionRead() and usbFunctionWrite()
- * are only done if enabled by the configuration in usbconfig.h.
- */
-USB_PUBLIC usbMsgLen_t usbFunctionDescriptor(struct usbRequest *rq);
-/* You need to implement this function ONLY if you provide USB descriptors at
- * runtime (which is an expert feature). It is very similar to
- * usbFunctionSetup() above, but it is called only to request USB descriptor
- * data. See the documentation of usbFunctionSetup() above for more info.
- */
-#if USB_CFG_HAVE_INTRIN_ENDPOINT
-USB_PUBLIC void usbSetInterrupt(uchar *data, uchar len);
-/* This function sets the message which will be sent during the next interrupt
- * IN transfer. The message is copied to an internal buffer and must not exceed
- * a length of 8 bytes. The message may be 0 bytes long just to indicate the
- * interrupt status to the host.
- * If you need to transfer more bytes, use a control read after the interrupt.
- */
-#define usbInterruptIsReady() (usbTxLen1 & 0x10)
-/* This macro indicates whether the last interrupt message has already been
- * sent. If you set a new interrupt message before the old was sent, the
- * message already buffered will be lost.
- */
-#if USB_CFG_HAVE_INTRIN_ENDPOINT3
-USB_PUBLIC void usbSetInterrupt3(uchar *data, uchar len);
-#define usbInterruptIsReady3() (usbTxLen3 & 0x10)
-/* Same as above for endpoint 3 */
-#endif
-#endif /* USB_CFG_HAVE_INTRIN_ENDPOINT */
-#if USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH /* simplified interface for backward compatibility */
-#define usbHidReportDescriptor usbDescriptorHidReport
-/* should be declared as: PROGMEM char usbHidReportDescriptor[]; */
-/* If you implement an HID device, you need to provide a report descriptor.
- * The HID report descriptor syntax is a bit complex. If you understand how
- * report descriptors are constructed, we recommend that you use the HID
- * Descriptor Tool from usb.org, see http://www.usb.org/developers/hidpage/.
- * Otherwise you should probably start with a working example.
- */
-#endif /* USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH */
-#if USB_CFG_IMPLEMENT_FN_WRITE
-USB_PUBLIC uchar usbFunctionWrite(uchar *data, uchar len);
-/* This function is called by the driver to provide a control transfer's
- * payload data (control-out). It is called in chunks of up to 8 bytes. The
- * total count provided in the current control transfer can be obtained from
- * the 'length' property in the setup data. If an error occurred during
- * processing, return 0xff (== -1). The driver will answer the entire transfer
- * with a STALL token in this case. If you have received the entire payload
- * successfully, return 1. If you expect more data, return 0. If you don't
- * know whether the host will send more data (you should know, the total is
- * provided in the usbFunctionSetup() call!), return 1.
- * NOTE: If you return 0xff for STALL, 'usbFunctionWrite()' may still be called
- * for the remaining data. You must continue to return 0xff for STALL in these
- * calls.
- * In order to get usbFunctionWrite() called, define USB_CFG_IMPLEMENT_FN_WRITE
- * to 1 in usbconfig.h and return 0xff in usbFunctionSetup()..
- */
-#endif /* USB_CFG_IMPLEMENT_FN_WRITE */
-#if USB_CFG_IMPLEMENT_FN_READ
-USB_PUBLIC uchar usbFunctionRead(uchar *data, uchar len);
-/* This function is called by the driver to ask the application for a control
- * transfer's payload data (control-in). It is called in chunks of up to 8
- * bytes each. You should copy the data to the location given by 'data' and
- * return the actual number of bytes copied. If you return less than requested,
- * the control-in transfer is terminated. If you return 0xff, the driver aborts
- * the transfer with a STALL token.
- * In order to get usbFunctionRead() called, define USB_CFG_IMPLEMENT_FN_READ
- * to 1 in usbconfig.h and return 0xff in usbFunctionSetup()..
- */
-#endif /* USB_CFG_IMPLEMENT_FN_READ */
-
-extern uchar usbRxToken; /* may be used in usbFunctionWriteOut() below */
-#if USB_CFG_IMPLEMENT_FN_WRITEOUT
-USB_PUBLIC void usbFunctionWriteOut(uchar *data, uchar len);
-/* This function is called by the driver when data is received on an interrupt-
- * or bulk-out endpoint. The endpoint number can be found in the global
- * variable usbRxToken. You must define USB_CFG_IMPLEMENT_FN_WRITEOUT to 1 in
- * usbconfig.h to get this function called.
- */
-#endif /* USB_CFG_IMPLEMENT_FN_WRITEOUT */
-#ifdef USB_CFG_PULLUP_IOPORTNAME
-#define usbDeviceConnect() ((USB_PULLUP_DDR |= (1<<USB_CFG_PULLUP_BIT)), \
- (USB_PULLUP_OUT |= (1<<USB_CFG_PULLUP_BIT)))
-#define usbDeviceDisconnect() ((USB_PULLUP_DDR &= ~(1<<USB_CFG_PULLUP_BIT)), \
- (USB_PULLUP_OUT &= ~(1<<USB_CFG_PULLUP_BIT)))
-#else /* USB_CFG_PULLUP_IOPORTNAME */
-#define usbDeviceConnect() (USBDDR &= ~(1<<USBMINUS))
-#define usbDeviceDisconnect() (USBDDR |= (1<<USBMINUS))
-#endif /* USB_CFG_PULLUP_IOPORTNAME */
-/* The macros usbDeviceConnect() and usbDeviceDisconnect() (intended to look
- * like a function) connect resp. disconnect the device from the host's USB.
- * If the constants USB_CFG_PULLUP_IOPORT and USB_CFG_PULLUP_BIT are defined
- * in usbconfig.h, a disconnect consists of removing the pull-up resisitor
- * from D-, otherwise the disconnect is done by brute-force pulling D- to GND.
- * This does not conform to the spec, but it works.
- * Please note that the USB interrupt must be disabled while the device is
- * in disconnected state, or the interrupt handler will hang! You can either
- * turn off the USB interrupt selectively with
- * USB_INTR_ENABLE &= ~(1 << USB_INTR_ENABLE_BIT)
- * or use cli() to disable interrupts globally.
- */
-extern unsigned usbCrc16(unsigned data, uchar len);
-#define usbCrc16(data, len) usbCrc16((unsigned)(data), len)
-/* This function calculates the binary complement of the data CRC used in
- * USB data packets. The value is used to build raw transmit packets.
- * You may want to use this function for data checksums or to verify received
- * data. We enforce 16 bit calling conventions for compatibility with IAR's
- * tiny memory model.
- */
-extern unsigned usbCrc16Append(unsigned data, uchar len);
-#define usbCrc16Append(data, len) usbCrc16Append((unsigned)(data), len)
-/* This function is equivalent to usbCrc16() above, except that it appends
- * the 2 bytes CRC (lowbyte first) in the 'data' buffer after reading 'len'
- * bytes.
- */
-#if USB_CFG_HAVE_MEASURE_FRAME_LENGTH
-extern unsigned usbMeasureFrameLength(void);
-/* This function MUST be called IMMEDIATELY AFTER USB reset and measures 1/7 of
- * the number of CPU cycles during one USB frame minus one low speed bit
- * length. In other words: return value = 1499 * (F_CPU / 10.5 MHz)
- * Since this is a busy wait, you MUST disable all interrupts with cli() before
- * calling this function.
- * This can be used to calibrate the AVR's RC oscillator.
- */
-#endif
-extern uchar usbConfiguration;
-/* This value contains the current configuration set by the host. The driver
- * allows setting and querying of this variable with the USB SET_CONFIGURATION
- * and GET_CONFIGURATION requests, but does not use it otherwise.
- * You may want to reflect the "configured" status with a LED on the device or
- * switch on high power parts of the circuit only if the device is configured.
- */
-#if USB_COUNT_SOF
-extern volatile uchar usbSofCount;
-/* This variable is incremented on every SOF packet. It is only available if
- * the macro USB_COUNT_SOF is defined to a value != 0.
- */
-#endif
-#if USB_CFG_CHECK_DATA_TOGGLING
-extern uchar usbCurrentDataToken;
-/* This variable can be checked in usbFunctionWrite() and usbFunctionWriteOut()
- * to ignore duplicate packets.
- */
-#endif
-
-#define USB_STRING_DESCRIPTOR_HEADER(stringLength) ((2*(stringLength)+2) | (3<<8))
-/* This macro builds a descriptor header for a string descriptor given the
- * string's length. See usbdrv.c for an example how to use it.
- */
-#if USB_CFG_HAVE_FLOWCONTROL
-extern volatile schar usbRxLen;
-#define usbDisableAllRequests() usbRxLen = -1
-/* Must be called from usbFunctionWrite(). This macro disables all data input
- * from the USB interface. Requests from the host are answered with a NAK
- * while they are disabled.
- */
-#define usbEnableAllRequests() usbRxLen = 0
-/* May only be called if requests are disabled. This macro enables input from
- * the USB interface after it has been disabled with usbDisableAllRequests().
- */
-#define usbAllRequestsAreDisabled() (usbRxLen < 0)
-/* Use this macro to find out whether requests are disabled. It may be needed
- * to ensure that usbEnableAllRequests() is never called when requests are
- * enabled.
- */
-#endif
-
-#define USB_SET_DATATOKEN1(token) usbTxBuf1[0] = token
-#define USB_SET_DATATOKEN3(token) usbTxBuf3[0] = token
-/* These two macros can be used by application software to reset data toggling
- * for interrupt-in endpoints 1 and 3. Since the token is toggled BEFORE
- * sending data, you must set the opposite value of the token which should come
- * first.
- */
-
-#endif /* __ASSEMBLER__ */
-
-
-/* ------------------------------------------------------------------------- */
-/* ----------------- Definitions for Descriptor Properties ----------------- */
-/* ------------------------------------------------------------------------- */
-/* This is advanced stuff. See usbconfig-prototype.h for more information
- * about the various methods to define USB descriptors. If you do nothing,
- * the default descriptors will be used.
- */
-#define USB_PROP_IS_DYNAMIC (1 << 14)
-/* If this property is set for a descriptor, usbFunctionDescriptor() will be
- * used to obtain the particular descriptor. Data directly returned via
- * usbMsgPtr are FLASH data by default, combine (OR) with USB_PROP_IS_RAM to
- * return RAM data.
- */
-#define USB_PROP_IS_RAM (1 << 15)
-/* If this property is set for a descriptor, the data is read from RAM
- * memory instead of Flash. The property is used for all methods to provide
- * external descriptors.
- */
-#define USB_PROP_LENGTH(len) ((len) & 0x3fff)
-/* If a static external descriptor is used, this is the total length of the
- * descriptor in bytes.
- */
-
-/* all descriptors which may have properties: */
-#ifndef USB_CFG_DESCR_PROPS_DEVICE
-#define USB_CFG_DESCR_PROPS_DEVICE 0
-#endif
-#ifndef USB_CFG_DESCR_PROPS_CONFIGURATION
-#define USB_CFG_DESCR_PROPS_CONFIGURATION 0
-#endif
-#ifndef USB_CFG_DESCR_PROPS_STRINGS
-#define USB_CFG_DESCR_PROPS_STRINGS 0
-#endif
-#ifndef USB_CFG_DESCR_PROPS_STRING_0
-#define USB_CFG_DESCR_PROPS_STRING_0 0
-#endif
-#ifndef USB_CFG_DESCR_PROPS_STRING_VENDOR
-#define USB_CFG_DESCR_PROPS_STRING_VENDOR 0
-#endif
-#ifndef USB_CFG_DESCR_PROPS_STRING_PRODUCT
-#define USB_CFG_DESCR_PROPS_STRING_PRODUCT 0
-#endif
-#ifndef USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER
-#define USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER 0
-#endif
-#ifndef USB_CFG_DESCR_PROPS_HID
-#define USB_CFG_DESCR_PROPS_HID 0
-#endif
-#if !(USB_CFG_DESCR_PROPS_HID_REPORT)
-# undef USB_CFG_DESCR_PROPS_HID_REPORT
-# if USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH /* do some backward compatibility tricks */
-# define USB_CFG_DESCR_PROPS_HID_REPORT USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH
-# else
-# define USB_CFG_DESCR_PROPS_HID_REPORT 0
-# endif
-#endif
-#ifndef USB_CFG_DESCR_PROPS_UNKNOWN
-#define USB_CFG_DESCR_PROPS_UNKNOWN 0
-#endif
-
-/* ------------------ forward declaration of descriptors ------------------- */
-/* If you use external static descriptors, they must be stored in global
- * arrays as declared below:
- */
-#ifndef __ASSEMBLER__
-extern
-#if !(USB_CFG_DESCR_PROPS_DEVICE & USB_PROP_IS_RAM)
-PROGMEM
-#endif
-char usbDescriptorDevice[];
-
-extern
-#if !(USB_CFG_DESCR_PROPS_CONFIGURATION & USB_PROP_IS_RAM)
-PROGMEM
-#endif
-char usbDescriptorConfiguration[];
-
-extern
-#if !(USB_CFG_DESCR_PROPS_HID_REPORT & USB_PROP_IS_RAM)
-PROGMEM
-#endif
-char usbDescriptorHidReport[];
-
-extern
-#if !(USB_CFG_DESCR_PROPS_STRING_0 & USB_PROP_IS_RAM)
-PROGMEM
-#endif
-char usbDescriptorString0[];
-
-extern
-#if !(USB_CFG_DESCR_PROPS_STRING_VENDOR & USB_PROP_IS_RAM)
-PROGMEM
-#endif
-int usbDescriptorStringVendor[];
-
-extern
-#if !(USB_CFG_DESCR_PROPS_STRING_PRODUCT & USB_PROP_IS_RAM)
-PROGMEM
-#endif
-int usbDescriptorStringDevice[];
-
-extern
-#if !(USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER & USB_PROP_IS_RAM)
-PROGMEM
-#endif
-int usbDescriptorStringSerialNumber[];
-
-#endif /* __ASSEMBLER__ */
-
-/* ------------------------------------------------------------------------- */
-/* ------------------------ General Purpose Macros ------------------------- */
-/* ------------------------------------------------------------------------- */
-
-#define USB_CONCAT(a, b) a ## b
-#define USB_CONCAT_EXPANDED(a, b) USB_CONCAT(a, b)
-
-#define USB_OUTPORT(name) USB_CONCAT(PORT, name)
-#define USB_INPORT(name) USB_CONCAT(PIN, name)
-#define USB_DDRPORT(name) USB_CONCAT(DDR, name)
-/* The double-define trick above lets us concatenate strings which are
- * defined by macros.
- */
-
-/* ------------------------------------------------------------------------- */
-/* ------------------------- Constant definitions -------------------------- */
-/* ------------------------------------------------------------------------- */
-
-#if !defined __ASSEMBLER__ && (!defined USB_CFG_VENDOR_ID || !defined USB_CFG_DEVICE_ID)
-#warning "You should define USB_CFG_VENDOR_ID and USB_CFG_DEVICE_ID in usbconfig.h"
-/* If the user has not defined IDs, we default to obdev's free IDs.
- * See USB-IDs-for-free.txt for details.
- */
-#endif
-
-/* make sure we have a VID and PID defined, byte order is lowbyte, highbyte */
-#ifndef USB_CFG_VENDOR_ID
-# define USB_CFG_VENDOR_ID 0xc0, 0x16 /* = 0x16c0 = 5824 = voti.nl */
-#endif
-
-#ifndef USB_CFG_DEVICE_ID
-# if USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH
-# define USB_CFG_DEVICE_ID 0xdf, 0x05 /* = 0x5df = 1503, shared PID for HIDs */
-# elif USB_CFG_INTERFACE_CLASS == 2
-# define USB_CFG_DEVICE_ID 0xe1, 0x05 /* = 0x5e1 = 1505, shared PID for CDC Modems */
-# else
-# define USB_CFG_DEVICE_ID 0xdc, 0x05 /* = 0x5dc = 1500, obdev's free PID */
-# endif
-#endif
-
-/* Derive Output, Input and DataDirection ports from port names */
-#ifndef USB_CFG_IOPORTNAME
-#error "You must define USB_CFG_IOPORTNAME in usbconfig.h, see usbconfig-prototype.h"
-#endif
-
-#define USBOUT USB_OUTPORT(USB_CFG_IOPORTNAME)
-#define USB_PULLUP_OUT USB_OUTPORT(USB_CFG_PULLUP_IOPORTNAME)
-#define USBIN USB_INPORT(USB_CFG_IOPORTNAME)
-#define USBDDR USB_DDRPORT(USB_CFG_IOPORTNAME)
-#define USB_PULLUP_DDR USB_DDRPORT(USB_CFG_PULLUP_IOPORTNAME)
-
-#define USBMINUS USB_CFG_DMINUS_BIT
-#define USBPLUS USB_CFG_DPLUS_BIT
-#define USBIDLE (1<<USB_CFG_DMINUS_BIT) /* value representing J state */
-#define USBMASK ((1<<USB_CFG_DPLUS_BIT) | (1<<USB_CFG_DMINUS_BIT)) /* mask for USB I/O bits */
-
-/* defines for backward compatibility with older driver versions: */
-#define USB_CFG_IOPORT USB_OUTPORT(USB_CFG_IOPORTNAME)
-#ifdef USB_CFG_PULLUP_IOPORTNAME
-#define USB_CFG_PULLUP_IOPORT USB_OUTPORT(USB_CFG_PULLUP_IOPORTNAME)
-#endif
-
-#ifndef USB_CFG_EP3_NUMBER /* if not defined in usbconfig.h */
-#define USB_CFG_EP3_NUMBER 3
-#endif
-
-#ifndef USB_CFG_HAVE_INTRIN_ENDPOINT3
-#define USB_CFG_HAVE_INTRIN_ENDPOINT3 0
-#endif
-
-#define USB_BUFSIZE 11 /* PID, 8 bytes data, 2 bytes CRC */
-
-/* ----- Try to find registers and bits responsible for ext interrupt 0 ----- */
-
-#ifndef USB_INTR_CFG /* allow user to override our default */
-# if defined EICRA
-# define USB_INTR_CFG EICRA
-# else
-# define USB_INTR_CFG MCUCR
-# endif
-#endif
-#ifndef USB_INTR_CFG_SET /* allow user to override our default */
-# if defined(USB_COUNT_SOF) || defined(USB_SOF_HOOK)
-# define USB_INTR_CFG_SET (1 << ISC01) /* cfg for falling edge */
- /* If any SOF logic is used, the interrupt must be wired to D- where
- * we better trigger on falling edge
- */
-# else
-# define USB_INTR_CFG_SET ((1 << ISC00) | (1 << ISC01)) /* cfg for rising edge */
-# endif
-#endif
-#ifndef USB_INTR_CFG_CLR /* allow user to override our default */
-# define USB_INTR_CFG_CLR 0 /* no bits to clear */
-#endif
-
-#ifndef USB_INTR_ENABLE /* allow user to override our default */
-# if defined GIMSK
-# define USB_INTR_ENABLE GIMSK
-# elif defined EIMSK
-# define USB_INTR_ENABLE EIMSK
-# else
-# define USB_INTR_ENABLE GICR
-# endif
-#endif
-#ifndef USB_INTR_ENABLE_BIT /* allow user to override our default */
-# define USB_INTR_ENABLE_BIT INT0
-#endif
-
-#ifndef USB_INTR_PENDING /* allow user to override our default */
-# if defined EIFR
-# define USB_INTR_PENDING EIFR
-# else
-# define USB_INTR_PENDING GIFR
-# endif
-#endif
-#ifndef USB_INTR_PENDING_BIT /* allow user to override our default */
-# define USB_INTR_PENDING_BIT INTF0
-#endif
-
-/*
-The defines above don't work for the following chips
-at90c8534: no ISC0?, no PORTB, can't find a data sheet
-at86rf401: no PORTB, no MCUCR etc, low clock rate
-atmega103: no ISC0? (maybe omission in header, can't find data sheet)
-atmega603: not defined in avr-libc
-at43usb320, at43usb355, at76c711: have USB anyway
-at94k: is different...
-
-at90s1200, attiny11, attiny12, attiny15, attiny28: these have no RAM
-*/
-
-/* ------------------------------------------------------------------------- */
-/* ----------------- USB Specification Constants and Types ----------------- */
-/* ------------------------------------------------------------------------- */
-
-/* USB Token values */
-#define USBPID_SETUP 0x2d
-#define USBPID_OUT 0xe1
-#define USBPID_IN 0x69
-#define USBPID_DATA0 0xc3
-#define USBPID_DATA1 0x4b
-
-#define USBPID_ACK 0xd2
-#define USBPID_NAK 0x5a
-#define USBPID_STALL 0x1e
-
-#ifndef USB_INITIAL_DATATOKEN
-#define USB_INITIAL_DATATOKEN USBPID_DATA1
-#endif
-
-#ifndef __ASSEMBLER__
-
-typedef struct usbTxStatus{
- volatile uchar len;
- uchar buffer[USB_BUFSIZE];
-}usbTxStatus_t;
-
-extern usbTxStatus_t usbTxStatus1, usbTxStatus3;
-#define usbTxLen1 usbTxStatus1.len
-#define usbTxBuf1 usbTxStatus1.buffer
-#define usbTxLen3 usbTxStatus3.len
-#define usbTxBuf3 usbTxStatus3.buffer
-
-
-typedef union usbWord{
- unsigned word;
- uchar bytes[2];
-}usbWord_t;
-
-typedef struct usbRequest{
- uchar bmRequestType;
- uchar bRequest;
- usbWord_t wValue;
- usbWord_t wIndex;
- usbWord_t wLength;
-}usbRequest_t;
-/* This structure matches the 8 byte setup request */
-#endif
-
-/* bmRequestType field in USB setup:
- * d t t r r r r r, where
- * d ..... direction: 0=host->device, 1=device->host
- * t ..... type: 0=standard, 1=class, 2=vendor, 3=reserved
- * r ..... recipient: 0=device, 1=interface, 2=endpoint, 3=other
- */
-
-/* USB setup recipient values */
-#define USBRQ_RCPT_MASK 0x1f
-#define USBRQ_RCPT_DEVICE 0
-#define USBRQ_RCPT_INTERFACE 1
-#define USBRQ_RCPT_ENDPOINT 2
-
-/* USB request type values */
-#define USBRQ_TYPE_MASK 0x60
-#define USBRQ_TYPE_STANDARD (0<<5)
-#define USBRQ_TYPE_CLASS (1<<5)
-#define USBRQ_TYPE_VENDOR (2<<5)
-
-/* USB direction values: */
-#define USBRQ_DIR_MASK 0x80
-#define USBRQ_DIR_HOST_TO_DEVICE (0<<7)
-#define USBRQ_DIR_DEVICE_TO_HOST (1<<7)
-
-/* USB Standard Requests */
-#define USBRQ_GET_STATUS 0
-#define USBRQ_CLEAR_FEATURE 1
-#define USBRQ_SET_FEATURE 3
-#define USBRQ_SET_ADDRESS 5
-#define USBRQ_GET_DESCRIPTOR 6
-#define USBRQ_SET_DESCRIPTOR 7
-#define USBRQ_GET_CONFIGURATION 8
-#define USBRQ_SET_CONFIGURATION 9
-#define USBRQ_GET_INTERFACE 10
-#define USBRQ_SET_INTERFACE 11
-#define USBRQ_SYNCH_FRAME 12
-
-/* USB descriptor constants */
-#define USBDESCR_DEVICE 1
-#define USBDESCR_CONFIG 2
-#define USBDESCR_STRING 3
-#define USBDESCR_INTERFACE 4
-#define USBDESCR_ENDPOINT 5
-#define USBDESCR_HID 0x21
-#define USBDESCR_HID_REPORT 0x22
-#define USBDESCR_HID_PHYS 0x23
-
-//#define USBATTR_BUSPOWER 0x80 // USB 1.1 does not define this value any more
-#define USBATTR_SELFPOWER 0x40
-#define USBATTR_REMOTEWAKE 0x20
-
-/* USB HID Requests */
-#define USBRQ_HID_GET_REPORT 0x01
-#define USBRQ_HID_GET_IDLE 0x02
-#define USBRQ_HID_GET_PROTOCOL 0x03
-#define USBRQ_HID_SET_REPORT 0x09
-#define USBRQ_HID_SET_IDLE 0x0a
-#define USBRQ_HID_SET_PROTOCOL 0x0b
-
-/* ------------------------------------------------------------------------- */
-
-#endif /* __usbdrv_h_included__ */
+++ /dev/null
-/* Name: usbdrvasm.S
- * Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
- * Author: Christian Starkjohann
- * Creation Date: 2007-06-13
- * Tabsize: 4
- * Copyright: (c) 2007 by OBJECTIVE DEVELOPMENT Software GmbH
- * License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
- * Revision: $Id: usbdrvasm.S 761 2009-08-12 16:30:23Z cs $
- */
-
-/*
-General Description:
-This module is the assembler part of the USB driver. This file contains
-general code (preprocessor acrobatics and CRC computation) and then includes
-the file appropriate for the given clock rate.
-*/
-
-#define __SFR_OFFSET 0 /* used by avr-libc's register definitions */
-#include "usbportability.h"
-#include "usbdrv.h" /* for common defs */
-
-/* register names */
-#define x1 r16
-#define x2 r17
-#define shift r18
-#define cnt r19
-#define x3 r20
-#define x4 r21
-#define x5 r22
-#define bitcnt x5
-#define phase x4
-#define leap x4
-
-/* Some assembler dependent definitions and declarations: */
-
-#ifdef __IAR_SYSTEMS_ASM__
- extern usbRxBuf, usbDeviceAddr, usbNewDeviceAddr, usbInputBufOffset
- extern usbCurrentTok, usbRxLen, usbRxToken, usbTxLen
- extern usbTxBuf, usbTxStatus1, usbTxStatus3
-# if USB_COUNT_SOF
- extern usbSofCount
-# endif
- public usbCrc16
- public usbCrc16Append
-
- COMMON INTVEC
-# ifndef USB_INTR_VECTOR
- ORG INT0_vect
-# else /* USB_INTR_VECTOR */
- ORG USB_INTR_VECTOR
-# undef USB_INTR_VECTOR
-# endif /* USB_INTR_VECTOR */
-# define USB_INTR_VECTOR usbInterruptHandler
- rjmp USB_INTR_VECTOR
- RSEG CODE
-
-#else /* __IAR_SYSTEMS_ASM__ */
-
-# ifndef USB_INTR_VECTOR /* default to hardware interrupt INT0 */
-# define USB_INTR_VECTOR SIG_INTERRUPT0
-# endif
- .text
- .global USB_INTR_VECTOR
- .type USB_INTR_VECTOR, @function
- .global usbCrc16
- .global usbCrc16Append
-#endif /* __IAR_SYSTEMS_ASM__ */
-
-
-#if USB_INTR_PENDING < 0x40 /* This is an I/O address, use in and out */
-# define USB_LOAD_PENDING(reg) in reg, USB_INTR_PENDING
-# define USB_STORE_PENDING(reg) out USB_INTR_PENDING, reg
-#else /* It's a memory address, use lds and sts */
-# define USB_LOAD_PENDING(reg) lds reg, USB_INTR_PENDING
-# define USB_STORE_PENDING(reg) sts USB_INTR_PENDING, reg
-#endif
-
-#define usbTxLen1 usbTxStatus1
-#define usbTxBuf1 (usbTxStatus1 + 1)
-#define usbTxLen3 usbTxStatus3
-#define usbTxBuf3 (usbTxStatus3 + 1)
-
-
-;----------------------------------------------------------------------------
-; Utility functions
-;----------------------------------------------------------------------------
-
-#ifdef __IAR_SYSTEMS_ASM__
-/* Register assignments for usbCrc16 on IAR cc */
-/* Calling conventions on IAR:
- * First parameter passed in r16/r17, second in r18/r19 and so on.
- * Callee must preserve r4-r15, r24-r29 (r28/r29 is frame pointer)
- * Result is passed in r16/r17
- * In case of the "tiny" memory model, pointers are only 8 bit with no
- * padding. We therefore pass argument 1 as "16 bit unsigned".
- */
-RTMODEL "__rt_version", "3"
-/* The line above will generate an error if cc calling conventions change.
- * The value "3" above is valid for IAR 4.10B/W32
- */
-# define argLen r18 /* argument 2 */
-# define argPtrL r16 /* argument 1 */
-# define argPtrH r17 /* argument 1 */
-
-# define resCrcL r16 /* result */
-# define resCrcH r17 /* result */
-
-# define ptrL ZL
-# define ptrH ZH
-# define ptr Z
-# define byte r22
-# define bitCnt r19
-# define polyL r20
-# define polyH r21
-# define scratch r23
-
-#else /* __IAR_SYSTEMS_ASM__ */
-/* Register assignments for usbCrc16 on gcc */
-/* Calling conventions on gcc:
- * First parameter passed in r24/r25, second in r22/23 and so on.
- * Callee must preserve r1-r17, r28/r29
- * Result is passed in r24/r25
- */
-# define argLen r22 /* argument 2 */
-# define argPtrL r24 /* argument 1 */
-# define argPtrH r25 /* argument 1 */
-
-# define resCrcL r24 /* result */
-# define resCrcH r25 /* result */
-
-# define ptrL XL
-# define ptrH XH
-# define ptr x
-# define byte r18
-# define bitCnt r19
-# define polyL r20
-# define polyH r21
-# define scratch r23
-
-#endif
-
-#if USB_USE_FAST_CRC
-
-; This implementation is faster, but has bigger code size
-; Thanks to Slawomir Fras (BoskiDialer) for this code!
-; It implements the following C pseudo-code:
-; unsigned table(unsigned char x)
-; {
-; unsigned value;
-;
-; value = (unsigned)x << 6;
-; value ^= (unsigned)x << 7;
-; if(parity(x))
-; value ^= 0xc001;
-; return value;
-; }
-; unsigned usbCrc16(unsigned char *argPtr, unsigned char argLen)
-; {
-; unsigned crc = 0xffff;
-;
-; while(argLen--)
-; crc = table(lo8(crc) ^ *argPtr++) ^ hi8(crc);
-; return ~crc;
-; }
-
-; extern unsigned usbCrc16(unsigned char *argPtr, unsigned char argLen);
-; argPtr r24+25 / r16+r17
-; argLen r22 / r18
-; temp variables:
-; byte r18 / r22
-; scratch r23
-; resCrc r24+r25 / r16+r17
-; ptr X / Z
-usbCrc16:
- mov ptrL, argPtrL
- mov ptrH, argPtrH
- ldi resCrcL, 0xFF
- ldi resCrcH, 0xFF
- rjmp usbCrc16LoopTest
-usbCrc16ByteLoop:
- ld byte, ptr+
- eor resCrcL, byte ; resCrcL is now 'x' in table()
- mov byte, resCrcL ; compute parity of 'x'
- swap byte
- eor byte, resCrcL
- mov scratch, byte
- lsr byte
- lsr byte
- eor byte, scratch
- inc byte
- lsr byte
- andi byte, 1 ; byte is now parity(x)
- mov scratch, resCrcL
- mov resCrcL, resCrcH
- eor resCrcL, byte ; low byte of if(parity(x)) value ^= 0xc001;
- neg byte
- andi byte, 0xc0
- mov resCrcH, byte ; high byte of if(parity(x)) value ^= 0xc001;
- clr byte
- lsr scratch
- ror byte
- eor resCrcH, scratch
- eor resCrcL, byte
- lsr scratch
- ror byte
- eor resCrcH, scratch
- eor resCrcL, byte
-usbCrc16LoopTest:
- subi argLen, 1
- brsh usbCrc16ByteLoop
- com resCrcL
- com resCrcH
- ret
-
-#else /* USB_USE_FAST_CRC */
-
-; This implementation is slower, but has less code size
-;
-; extern unsigned usbCrc16(unsigned char *argPtr, unsigned char argLen);
-; argPtr r24+25 / r16+r17
-; argLen r22 / r18
-; temp variables:
-; byte r18 / r22
-; bitCnt r19
-; poly r20+r21
-; scratch r23
-; resCrc r24+r25 / r16+r17
-; ptr X / Z
-usbCrc16:
- mov ptrL, argPtrL
- mov ptrH, argPtrH
- ldi resCrcL, 0
- ldi resCrcH, 0
- ldi polyL, lo8(0xa001)
- ldi polyH, hi8(0xa001)
- com argLen ; argLen = -argLen - 1: modified loop to ensure that carry is set
- ldi bitCnt, 0 ; loop counter with starnd condition = end condition
- rjmp usbCrcLoopEntry
-usbCrcByteLoop:
- ld byte, ptr+
- eor resCrcL, byte
-usbCrcBitLoop:
- ror resCrcH ; carry is always set here (see brcs jumps to here)
- ror resCrcL
- brcs usbCrcNoXor
- eor resCrcL, polyL
- eor resCrcH, polyH
-usbCrcNoXor:
- subi bitCnt, 224 ; (8 * 224) % 256 = 0; this loop iterates 8 times
- brcs usbCrcBitLoop
-usbCrcLoopEntry:
- subi argLen, -1
- brcs usbCrcByteLoop
-usbCrcReady:
- ret
-; Thanks to Reimar Doeffinger for optimizing this CRC routine!
-
-#endif /* USB_USE_FAST_CRC */
-
-; extern unsigned usbCrc16Append(unsigned char *data, unsigned char len);
-usbCrc16Append:
- rcall usbCrc16
- st ptr+, resCrcL
- st ptr+, resCrcH
- ret
-
-#undef argLen
-#undef argPtrL
-#undef argPtrH
-#undef resCrcL
-#undef resCrcH
-#undef ptrL
-#undef ptrH
-#undef ptr
-#undef byte
-#undef bitCnt
-#undef polyL
-#undef polyH
-#undef scratch
-
-
-#if USB_CFG_HAVE_MEASURE_FRAME_LENGTH
-#ifdef __IAR_SYSTEMS_ASM__
-/* Register assignments for usbMeasureFrameLength on IAR cc */
-/* Calling conventions on IAR:
- * First parameter passed in r16/r17, second in r18/r19 and so on.
- * Callee must preserve r4-r15, r24-r29 (r28/r29 is frame pointer)
- * Result is passed in r16/r17
- * In case of the "tiny" memory model, pointers are only 8 bit with no
- * padding. We therefore pass argument 1 as "16 bit unsigned".
- */
-# define resL r16
-# define resH r17
-# define cnt16L r30
-# define cnt16H r31
-# define cntH r18
-
-#else /* __IAR_SYSTEMS_ASM__ */
-/* Register assignments for usbMeasureFrameLength on gcc */
-/* Calling conventions on gcc:
- * First parameter passed in r24/r25, second in r22/23 and so on.
- * Callee must preserve r1-r17, r28/r29
- * Result is passed in r24/r25
- */
-# define resL r24
-# define resH r25
-# define cnt16L r24
-# define cnt16H r25
-# define cntH r26
-#endif
-# define cnt16 cnt16L
-
-; extern unsigned usbMeasurePacketLength(void);
-; returns time between two idle strobes in multiples of 7 CPU clocks
-.global usbMeasureFrameLength
-usbMeasureFrameLength:
- ldi cntH, 6 ; wait ~ 10 ms for D- == 0
- clr cnt16L
- clr cnt16H
-usbMFTime16:
- dec cntH
- breq usbMFTimeout
-usbMFWaitStrobe: ; first wait for D- == 0 (idle strobe)
- sbiw cnt16, 1 ;[0] [6]
- breq usbMFTime16 ;[2]
- sbic USBIN, USBMINUS ;[3]
- rjmp usbMFWaitStrobe ;[4]
-usbMFWaitIdle: ; then wait until idle again
- sbis USBIN, USBMINUS ;1 wait for D- == 1
- rjmp usbMFWaitIdle ;2
- ldi cnt16L, 1 ;1 represents cycles so far
- clr cnt16H ;1
-usbMFWaitLoop:
- in cntH, USBIN ;[0] [7]
- adiw cnt16, 1 ;[1]
- breq usbMFTimeout ;[3]
- andi cntH, USBMASK ;[4]
- brne usbMFWaitLoop ;[5]
-usbMFTimeout:
-#if resL != cnt16L
- mov resL, cnt16L
- mov resH, cnt16H
-#endif
- ret
-
-#undef resL
-#undef resH
-#undef cnt16
-#undef cnt16L
-#undef cnt16H
-#undef cntH
-
-#endif /* USB_CFG_HAVE_MEASURE_FRAME_LENGTH */
-
-;----------------------------------------------------------------------------
-; Now include the clock rate specific code
-;----------------------------------------------------------------------------
-
-#ifndef USB_CFG_CLOCK_KHZ
-# define USB_CFG_CLOCK_KHZ 12000
-#endif
-
-#if USB_CFG_CHECK_CRC /* separate dispatcher for CRC type modules */
-# if USB_CFG_CLOCK_KHZ == 18000
-# include "usbdrvasm18-crc.inc"
-# else
-# error "USB_CFG_CLOCK_KHZ is not one of the supported crc-rates!"
-# endif
-#else /* USB_CFG_CHECK_CRC */
-# if USB_CFG_CLOCK_KHZ == 12000
-# include "usbdrvasm12.inc"
-# elif USB_CFG_CLOCK_KHZ == 12800
-# include "usbdrvasm128.inc"
-# elif USB_CFG_CLOCK_KHZ == 15000
-# include "usbdrvasm15.inc"
-# elif USB_CFG_CLOCK_KHZ == 16000
-# include "usbdrvasm16.inc"
-# elif USB_CFG_CLOCK_KHZ == 16500
-# include "usbdrvasm165.inc"
-# elif USB_CFG_CLOCK_KHZ == 20000
-# include "usbdrvasm20.inc"
-# else
-# error "USB_CFG_CLOCK_KHZ is not one of the supported non-crc-rates!"
-# endif
-#endif /* USB_CFG_CHECK_CRC */
+++ /dev/null
-/* Name: usbdrvasm.asm
- * Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
- * Author: Christian Starkjohann
- * Creation Date: 2006-03-01
- * Tabsize: 4
- * Copyright: (c) 2006 by OBJECTIVE DEVELOPMENT Software GmbH
- * License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
- * This Revision: $Id$
- */
-
-/*
-General Description:
-The IAR compiler/assembler system prefers assembler files with file extension
-".asm". We simply provide this file as an alias for usbdrvasm.S.
-
-Thanks to Oleg Semyonov for his help with the IAR tools port!
-*/
-
-#include "usbdrvasm.S"
-
-end
+++ /dev/null
-/* Name: usbdrvasm12.inc
- * Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
- * Author: Christian Starkjohann
- * Creation Date: 2004-12-29
- * Tabsize: 4
- * Copyright: (c) 2007 by OBJECTIVE DEVELOPMENT Software GmbH
- * License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
- * This Revision: $Id: usbdrvasm12.inc 740 2009-04-13 18:23:31Z cs $
- */
-
-/* Do not link this file! Link usbdrvasm.S instead, which includes the
- * appropriate implementation!
- */
-
-/*
-General Description:
-This file is the 12 MHz version of the asssembler part of the USB driver. It
-requires a 12 MHz crystal (not a ceramic resonator and not a calibrated RC
-oscillator).
-
-See usbdrv.h for a description of the entire driver.
-
-Since almost all of this code is timing critical, don't change unless you
-really know what you are doing! Many parts require not only a maximum number
-of CPU cycles, but even an exact number of cycles!
-
-
-Timing constraints according to spec (in bit times):
-timing subject min max CPUcycles
----------------------------------------------------------------------------
-EOP of OUT/SETUP to sync pattern of DATA0 (both rx) 2 16 16-128
-EOP of IN to sync pattern of DATA0 (rx, then tx) 2 7.5 16-60
-DATAx (rx) to ACK/NAK/STALL (tx) 2 7.5 16-60
-*/
-
-;Software-receiver engine. Strict timing! Don't change unless you can preserve timing!
-;interrupt response time: 4 cycles + insn running = 7 max if interrupts always enabled
-;max allowable interrupt latency: 34 cycles -> max 25 cycles interrupt disable
-;max stack usage: [ret(2), YL, SREG, YH, shift, x1, x2, x3, cnt, x4] = 11 bytes
-;Numbers in brackets are maximum cycles since SOF.
-USB_INTR_VECTOR:
-;order of registers pushed: YL, SREG [sofError], YH, shift, x1, x2, x3, cnt
- push YL ;2 [35] push only what is necessary to sync with edge ASAP
- in YL, SREG ;1 [37]
- push YL ;2 [39]
-;----------------------------------------------------------------------------
-; Synchronize with sync pattern:
-;----------------------------------------------------------------------------
-;sync byte (D-) pattern LSb to MSb: 01010100 [1 = idle = J, 0 = K]
-;sync up with J to K edge during sync pattern -- use fastest possible loops
-;The first part waits at most 1 bit long since we must be in sync pattern.
-;YL is guarenteed to be < 0x80 because I flag is clear. When we jump to
-;waitForJ, ensure that this prerequisite is met.
-waitForJ:
- inc YL
- sbis USBIN, USBMINUS
- brne waitForJ ; just make sure we have ANY timeout
-waitForK:
-;The following code results in a sampling window of 1/4 bit which meets the spec.
- sbis USBIN, USBMINUS
- rjmp foundK
- sbis USBIN, USBMINUS
- rjmp foundK
- sbis USBIN, USBMINUS
- rjmp foundK
- sbis USBIN, USBMINUS
- rjmp foundK
- sbis USBIN, USBMINUS
- rjmp foundK
-#if USB_COUNT_SOF
- lds YL, usbSofCount
- inc YL
- sts usbSofCount, YL
-#endif /* USB_COUNT_SOF */
-#ifdef USB_SOF_HOOK
- USB_SOF_HOOK
-#endif
- rjmp sofError
-foundK:
-;{3, 5} after falling D- edge, average delay: 4 cycles [we want 4 for center sampling]
-;we have 1 bit time for setup purposes, then sample again. Numbers in brackets
-;are cycles from center of first sync (double K) bit after the instruction
- push YH ;2 [2]
- lds YL, usbInputBufOffset;2 [4]
- clr YH ;1 [5]
- subi YL, lo8(-(usbRxBuf));1 [6]
- sbci YH, hi8(-(usbRxBuf));1 [7]
-
- sbis USBIN, USBMINUS ;1 [8] we want two bits K [sample 1 cycle too early]
- rjmp haveTwoBitsK ;2 [10]
- pop YH ;2 [11] undo the push from before
- rjmp waitForK ;2 [13] this was not the end of sync, retry
-haveTwoBitsK:
-;----------------------------------------------------------------------------
-; push more registers and initialize values while we sample the first bits:
-;----------------------------------------------------------------------------
- push shift ;2 [16]
- push x1 ;2 [12]
- push x2 ;2 [14]
-
- in x1, USBIN ;1 [17] <-- sample bit 0
- ldi shift, 0xff ;1 [18]
- bst x1, USBMINUS ;1 [19]
- bld shift, 0 ;1 [20]
- push x3 ;2 [22]
- push cnt ;2 [24]
-
- in x2, USBIN ;1 [25] <-- sample bit 1
- ser x3 ;1 [26] [inserted init instruction]
- eor x1, x2 ;1 [27]
- bst x1, USBMINUS ;1 [28]
- bld shift, 1 ;1 [29]
- ldi cnt, USB_BUFSIZE;1 [30] [inserted init instruction]
- rjmp rxbit2 ;2 [32]
-
-;----------------------------------------------------------------------------
-; Receiver loop (numbers in brackets are cycles within byte after instr)
-;----------------------------------------------------------------------------
-
-unstuff0: ;1 (branch taken)
- andi x3, ~0x01 ;1 [15]
- mov x1, x2 ;1 [16] x2 contains last sampled (stuffed) bit
- in x2, USBIN ;1 [17] <-- sample bit 1 again
- ori shift, 0x01 ;1 [18]
- rjmp didUnstuff0 ;2 [20]
-
-unstuff1: ;1 (branch taken)
- mov x2, x1 ;1 [21] x1 contains last sampled (stuffed) bit
- andi x3, ~0x02 ;1 [22]
- ori shift, 0x02 ;1 [23]
- nop ;1 [24]
- in x1, USBIN ;1 [25] <-- sample bit 2 again
- rjmp didUnstuff1 ;2 [27]
-
-unstuff2: ;1 (branch taken)
- andi x3, ~0x04 ;1 [29]
- ori shift, 0x04 ;1 [30]
- mov x1, x2 ;1 [31] x2 contains last sampled (stuffed) bit
- nop ;1 [32]
- in x2, USBIN ;1 [33] <-- sample bit 3
- rjmp didUnstuff2 ;2 [35]
-
-unstuff3: ;1 (branch taken)
- in x2, USBIN ;1 [34] <-- sample stuffed bit 3 [one cycle too late]
- andi x3, ~0x08 ;1 [35]
- ori shift, 0x08 ;1 [36]
- rjmp didUnstuff3 ;2 [38]
-
-unstuff4: ;1 (branch taken)
- andi x3, ~0x10 ;1 [40]
- in x1, USBIN ;1 [41] <-- sample stuffed bit 4
- ori shift, 0x10 ;1 [42]
- rjmp didUnstuff4 ;2 [44]
-
-unstuff5: ;1 (branch taken)
- andi x3, ~0x20 ;1 [48]
- in x2, USBIN ;1 [49] <-- sample stuffed bit 5
- ori shift, 0x20 ;1 [50]
- rjmp didUnstuff5 ;2 [52]
-
-unstuff6: ;1 (branch taken)
- andi x3, ~0x40 ;1 [56]
- in x1, USBIN ;1 [57] <-- sample stuffed bit 6
- ori shift, 0x40 ;1 [58]
- rjmp didUnstuff6 ;2 [60]
-
-; extra jobs done during bit interval:
-; bit 0: store, clear [SE0 is unreliable here due to bit dribbling in hubs]
-; bit 1: se0 check
-; bit 2: overflow check
-; bit 3: recovery from delay [bit 0 tasks took too long]
-; bit 4: none
-; bit 5: none
-; bit 6: none
-; bit 7: jump, eor
-rxLoop:
- eor x3, shift ;1 [0] reconstruct: x3 is 0 at bit locations we changed, 1 at others
- in x1, USBIN ;1 [1] <-- sample bit 0
- st y+, x3 ;2 [3] store data
- ser x3 ;1 [4]
- nop ;1 [5]
- eor x2, x1 ;1 [6]
- bst x2, USBMINUS;1 [7]
- bld shift, 0 ;1 [8]
- in x2, USBIN ;1 [9] <-- sample bit 1 (or possibly bit 0 stuffed)
- andi x2, USBMASK ;1 [10]
- breq se0 ;1 [11] SE0 check for bit 1
- andi shift, 0xf9 ;1 [12]
-didUnstuff0:
- breq unstuff0 ;1 [13]
- eor x1, x2 ;1 [14]
- bst x1, USBMINUS;1 [15]
- bld shift, 1 ;1 [16]
-rxbit2:
- in x1, USBIN ;1 [17] <-- sample bit 2 (or possibly bit 1 stuffed)
- andi shift, 0xf3 ;1 [18]
- breq unstuff1 ;1 [19] do remaining work for bit 1
-didUnstuff1:
- subi cnt, 1 ;1 [20]
- brcs overflow ;1 [21] loop control
- eor x2, x1 ;1 [22]
- bst x2, USBMINUS;1 [23]
- bld shift, 2 ;1 [24]
- in x2, USBIN ;1 [25] <-- sample bit 3 (or possibly bit 2 stuffed)
- andi shift, 0xe7 ;1 [26]
- breq unstuff2 ;1 [27]
-didUnstuff2:
- eor x1, x2 ;1 [28]
- bst x1, USBMINUS;1 [29]
- bld shift, 3 ;1 [30]
-didUnstuff3:
- andi shift, 0xcf ;1 [31]
- breq unstuff3 ;1 [32]
- in x1, USBIN ;1 [33] <-- sample bit 4
- eor x2, x1 ;1 [34]
- bst x2, USBMINUS;1 [35]
- bld shift, 4 ;1 [36]
-didUnstuff4:
- andi shift, 0x9f ;1 [37]
- breq unstuff4 ;1 [38]
- nop2 ;2 [40]
- in x2, USBIN ;1 [41] <-- sample bit 5
- eor x1, x2 ;1 [42]
- bst x1, USBMINUS;1 [43]
- bld shift, 5 ;1 [44]
-didUnstuff5:
- andi shift, 0x3f ;1 [45]
- breq unstuff5 ;1 [46]
- nop2 ;2 [48]
- in x1, USBIN ;1 [49] <-- sample bit 6
- eor x2, x1 ;1 [50]
- bst x2, USBMINUS;1 [51]
- bld shift, 6 ;1 [52]
-didUnstuff6:
- cpi shift, 0x02 ;1 [53]
- brlo unstuff6 ;1 [54]
- nop2 ;2 [56]
- in x2, USBIN ;1 [57] <-- sample bit 7
- eor x1, x2 ;1 [58]
- bst x1, USBMINUS;1 [59]
- bld shift, 7 ;1 [60]
-didUnstuff7:
- cpi shift, 0x04 ;1 [61]
- brsh rxLoop ;2 [63] loop control
-unstuff7:
- andi x3, ~0x80 ;1 [63]
- ori shift, 0x80 ;1 [64]
- in x2, USBIN ;1 [65] <-- sample stuffed bit 7
- nop ;1 [66]
- rjmp didUnstuff7 ;2 [68]
-
-macro POP_STANDARD ; 12 cycles
- pop cnt
- pop x3
- pop x2
- pop x1
- pop shift
- pop YH
- endm
-macro POP_RETI ; 5 cycles
- pop YL
- out SREG, YL
- pop YL
- endm
-
-#include "asmcommon.inc"
-
-;----------------------------------------------------------------------------
-; Transmitting data
-;----------------------------------------------------------------------------
-
-txByteLoop:
-txBitloop:
-stuffN1Delay: ; [03]
- ror shift ;[-5] [11] [59]
- brcc doExorN1 ;[-4] [60]
- subi x4, 1 ;[-3]
- brne commonN1 ;[-2]
- lsl shift ;[-1] compensate ror after rjmp stuffDelay
- nop ;[00] stuffing consists of just waiting 8 cycles
- rjmp stuffN1Delay ;[01] after ror, C bit is reliably clear
-
-sendNakAndReti: ;0 [-19] 19 cycles until SOP
- ldi x3, USBPID_NAK ;1 [-18]
- rjmp usbSendX3 ;2 [-16]
-sendAckAndReti: ;0 [-19] 19 cycles until SOP
- ldi x3, USBPID_ACK ;1 [-18]
- rjmp usbSendX3 ;2 [-16]
-sendCntAndReti: ;0 [-17] 17 cycles until SOP
- mov x3, cnt ;1 [-16]
-usbSendX3: ;0 [-16]
- ldi YL, 20 ;1 [-15] 'x3' is R20
- ldi YH, 0 ;1 [-14]
- ldi cnt, 2 ;1 [-13]
-; rjmp usbSendAndReti fallthrough
-
-; USB spec says:
-; idle = J
-; J = (D+ = 0), (D- = 1) or USBOUT = 0x01
-; K = (D+ = 1), (D- = 0) or USBOUT = 0x02
-; Spec allows 7.5 bit times from EOP to SOP for replies (= 60 cycles)
-
-;usbSend:
-;pointer to data in 'Y'
-;number of bytes in 'cnt' -- including sync byte
-;uses: x1...x2, x4, shift, cnt, Y [x1 = mirror USBOUT, x2 = USBMASK, x4 = bitstuff cnt]
-;Numbers in brackets are time since first bit of sync pattern is sent (start of instruction)
-usbSendAndReti:
- in x2, USBDDR ;[-12] 12 cycles until SOP
- ori x2, USBMASK ;[-11]
- sbi USBOUT, USBMINUS ;[-10] prepare idle state; D+ and D- must have been 0 (no pullups)
- out USBDDR, x2 ;[-8] <--- acquire bus
- in x1, USBOUT ;[-7] port mirror for tx loop
- ldi shift, 0x40 ;[-6] sync byte is first byte sent (we enter loop after ror)
- ldi x2, USBMASK ;[-5]
- push x4 ;[-4]
-doExorN1:
- eor x1, x2 ;[-2] [06] [62]
- ldi x4, 6 ;[-1] [07] [63]
-commonN1:
-stuffN2Delay:
- out USBOUT, x1 ;[00] [08] [64] <--- set bit
- ror shift ;[01]
- brcc doExorN2 ;[02]
- subi x4, 1 ;[03]
- brne commonN2 ;[04]
- lsl shift ;[05] compensate ror after rjmp stuffDelay
- rjmp stuffN2Delay ;[06] after ror, C bit is reliably clear
-doExorN2:
- eor x1, x2 ;[04] [12]
- ldi x4, 6 ;[05] [13]
-commonN2:
- nop ;[06] [14]
- subi cnt, 171 ;[07] [15] trick: (3 * 171) & 0xff = 1
- out USBOUT, x1 ;[08] [16] <--- set bit
- brcs txBitloop ;[09] [25] [41]
-
-stuff6Delay:
- ror shift ;[42] [50]
- brcc doExor6 ;[43]
- subi x4, 1 ;[44]
- brne common6 ;[45]
- lsl shift ;[46] compensate ror after rjmp stuffDelay
- nop ;[47] stuffing consists of just waiting 8 cycles
- rjmp stuff6Delay ;[48] after ror, C bit is reliably clear
-doExor6:
- eor x1, x2 ;[45] [53]
- ldi x4, 6 ;[46]
-common6:
-stuff7Delay:
- ror shift ;[47] [55]
- out USBOUT, x1 ;[48] <--- set bit
- brcc doExor7 ;[49]
- subi x4, 1 ;[50]
- brne common7 ;[51]
- lsl shift ;[52] compensate ror after rjmp stuffDelay
- rjmp stuff7Delay ;[53] after ror, C bit is reliably clear
-doExor7:
- eor x1, x2 ;[51] [59]
- ldi x4, 6 ;[52]
-common7:
- ld shift, y+ ;[53]
- tst cnt ;[55]
- out USBOUT, x1 ;[56] <--- set bit
- brne txByteLoop ;[57]
-
-;make SE0:
- cbr x1, USBMASK ;[58] prepare SE0 [spec says EOP may be 15 to 18 cycles]
- lds x2, usbNewDeviceAddr;[59]
- lsl x2 ;[61] we compare with left shifted address
- subi YL, 2 + 20 ;[62] Only assign address on data packets, not ACK/NAK in x3
- sbci YH, 0 ;[63]
- out USBOUT, x1 ;[00] <-- out SE0 -- from now 2 bits = 16 cycles until bus idle
-;2006-03-06: moved transfer of new address to usbDeviceAddr from C-Code to asm:
-;set address only after data packet was sent, not after handshake
- breq skipAddrAssign ;[01]
- sts usbDeviceAddr, x2 ; if not skipped: SE0 is one cycle longer
-skipAddrAssign:
-;end of usbDeviceAddress transfer
- ldi x2, 1<<USB_INTR_PENDING_BIT;[03] int0 occurred during TX -- clear pending flag
- USB_STORE_PENDING(x2) ;[04]
- ori x1, USBIDLE ;[05]
- in x2, USBDDR ;[06]
- cbr x2, USBMASK ;[07] set both pins to input
- mov x3, x1 ;[08]
- cbr x3, USBMASK ;[09] configure no pullup on both pins
- pop x4 ;[10]
- nop2 ;[12]
- nop2 ;[14]
- out USBOUT, x1 ;[16] <-- out J (idle) -- end of SE0 (EOP signal)
- out USBDDR, x2 ;[17] <-- release bus now
- out USBOUT, x3 ;[18] <-- ensure no pull-up resistors are active
- rjmp doReturn
+++ /dev/null
-/* Name: usbdrvasm128.inc
- * Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
- * Author: Christian Starkjohann
- * Creation Date: 2008-10-11
- * Tabsize: 4
- * Copyright: (c) 2008 by OBJECTIVE DEVELOPMENT Software GmbH
- * License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
- * This Revision: $Id: usbdrvasm128.inc 758 2009-08-06 10:12:54Z cs $
- */
-
-/* Do not link this file! Link usbdrvasm.S instead, which includes the
- * appropriate implementation!
- */
-
-/*
-General Description:
-This file is the 12.8 MHz version of the USB driver. It is intended for use
-with the internal RC oscillator. Although 12.8 MHz is outside the guaranteed
-calibration range of the oscillator, almost all AVRs can reach this frequency.
-This version contains a phase locked loop in the receiver routine to cope with
-slight clock rate deviations of up to +/- 1%.
-
-See usbdrv.h for a description of the entire driver.
-
-LIMITATIONS
-===========
-Although it may seem very handy to save the crystal and use the internal
-RC oscillator of the CPU, this method (and this module) has some serious
-limitations:
-(1) The guaranteed calibration range of the oscillator is only 8.1 MHz.
-They typical range is 14.5 MHz and most AVRs can actually reach this rate.
-(2) Writing EEPROM and Flash may be unreliable (short data lifetime) since
-the write procedure is timed from the RC oscillator.
-(3) End Of Packet detection (SE0) should be in bit 1, bit it is only checked
-if bits 0 and 1 both read as 0 on D- and D+ read as 0 in the middle. This may
-cause problems with old hubs which delay SE0 by up to one cycle.
-(4) Code size is much larger than that of the other modules.
-
-Since almost all of this code is timing critical, don't change unless you
-really know what you are doing! Many parts require not only a maximum number
-of CPU cycles, but even an exact number of cycles!
-
-Implementation notes:
-======================
-min frequency: 67 cycles for 8 bit -> 12.5625 MHz
-max frequency: 69.286 cycles for 8 bit -> 12.99 MHz
-nominal frequency: 12.77 MHz ( = sqrt(min * max))
-
-sampling positions: (next even number in range [+/- 0.5])
-cycle index range: 0 ... 66
-bits:
-.5, 8.875, 17.25, 25.625, 34, 42.375, 50.75, 59.125
-[0/1], [9], [17], [25/+26], [34], [+42/43], [51], [59]
-
-bit number: 0 1 2 3 4 5 6 7
-spare cycles 1 2 1 2 1 1 1 0
-
-operations to perform: duration cycle
- ----------------
- eor fix, shift 1 -> 00
- andi phase, USBMASK 1 -> 08
- breq se0 1 -> 16 (moved to 11)
- st y+, data 2 -> 24, 25
- mov data, fix 1 -> 33
- ser data 1 -> 41
- subi cnt, 1 1 -> 49
- brcs overflow 1 -> 50
-
-layout of samples and operations:
-[##] = sample bit
-<##> = sample phase
-*##* = operation
-
-0: *00* [01] 02 03 04 <05> 06 07
-1: *08* [09] 10 11 12 <13> 14 15 *16*
-2: [17] 18 19 20 <21> 22 23
-3: *24* *25* [26] 27 28 29 <30> 31 32
-4: *33* [34] 35 36 37 <38> 39 40
-5: *41* [42] 43 44 45 <46> 47 48
-6: *49* *50* [51] 52 53 54 <55> 56 57 58
-7: [59] 60 61 62 <63> 64 65 66
-*****************************************************************************/
-
-/* we prefer positive expressions (do if condition) instead of negative
- * (skip if condition), therefore use defines for skip instructions:
- */
-#define ifioclr sbis
-#define ifioset sbic
-#define ifrclr sbrs
-#define ifrset sbrc
-
-/* The registers "fix" and "data" swap their meaning during the loop. Use
- * defines to keep their name constant.
- */
-#define fix x2
-#define data x1
-#undef phase /* phase has a default definition to x4 */
-#define phase x3
-
-
-USB_INTR_VECTOR:
-;order of registers pushed: YL, SREG [sofError], YH, shift, x1, x2, x3, cnt, r0
- push YL ;2 push only what is necessary to sync with edge ASAP
- in YL, SREG ;1
- push YL ;2
-;----------------------------------------------------------------------------
-; Synchronize with sync pattern:
-;----------------------------------------------------------------------------
-;sync byte (D-) pattern LSb to MSb: 01010100 [1 = idle = J, 0 = K]
-;sync up with J to K edge during sync pattern -- use fastest possible loops
-;The first part waits at most 1 bit long since we must be in sync pattern.
-;YL is guarenteed to be < 0x80 because I flag is clear. When we jump to
-;waitForJ, ensure that this prerequisite is met.
-waitForJ:
- inc YL
- sbis USBIN, USBMINUS
- brne waitForJ ; just make sure we have ANY timeout
-waitForK:
-;The following code results in a sampling window of 1/4 bit which meets the spec.
- sbis USBIN, USBMINUS
- rjmp foundK
- sbis USBIN, USBMINUS
- rjmp foundK
- sbis USBIN, USBMINUS
- rjmp foundK
- sbis USBIN, USBMINUS
- rjmp foundK
- sbis USBIN, USBMINUS ;[0]
- rjmp foundK ;[1]
-#if USB_COUNT_SOF
- lds YL, usbSofCount
- inc YL
- sts usbSofCount, YL
-#endif /* USB_COUNT_SOF */
-#ifdef USB_SOF_HOOK
- USB_SOF_HOOK
-#endif
- rjmp sofError
-
-foundK:
-;{3, 5} after falling D- edge, average delay: 4 cycles [we want 4 for center sampling]
-;we have 1 bit time for setup purposes, then sample again. Numbers in brackets
-;are cycles from center of first sync (double K) bit after the instruction
- push YH ;[2]
- lds YL, usbInputBufOffset;[4]
- clr YH ;[6]
- subi YL, lo8(-(usbRxBuf));[7]
- sbci YH, hi8(-(usbRxBuf));[8]
-
- sbis USBIN, USBMINUS ;[9] we want two bits K [we want to sample at 8 + 4 - 1.5 = 10.5]
- rjmp haveTwoBitsK ;[10]
- pop YH ;[11] undo the push from before
- rjmp waitForK ;[13] this was not the end of sync, retry
-haveTwoBitsK:
-;----------------------------------------------------------------------------
-; push more registers and initialize values while we sample the first bits:
-;----------------------------------------------------------------------------
-#define fix x2
-#define data x1
-
- push shift ;[12]
- push x1 ;[14]
- push x2 ;[16]
- ldi shift, 0x80 ;[18] prevent bit-unstuffing but init low bits to 0
- ifioset USBIN, USBMINUS ;[19] [01] <--- bit 0 [10.5 + 8 = 18.5]
- ori shift, 1<<0 ;[02]
- push x3 ;[03]
- push cnt ;[05]
- push r0 ;[07]
- ifioset USBIN, USBMINUS ;[09] <--- bit 1
- ori shift, 1<<1 ;[10]
- ser fix ;[11]
- ldi cnt, USB_BUFSIZE ;[12]
- mov data, shift ;[13]
- lsl shift ;[14]
- nop2 ;[15]
- ifioset USBIN, USBMINUS ;[17] <--- bit 2
- ori data, 3<<2 ;[18] store in bit 2 AND bit 3
- eor shift, data ;[19] do nrzi decoding
- andi data, 1<<3 ;[20]
- in phase, USBIN ;[21] <- phase
- brne jumpToEntryAfterSet ;[22] if USBMINS at bit 3 was 1
- nop ;[23]
- rjmp entryAfterClr ;[24]
-jumpToEntryAfterSet:
- rjmp entryAfterSet ;[24]
-
-;----------------------------------------------------------------------------
-; Receiver loop (numbers in brackets are cycles within byte after instr)
-;----------------------------------------------------------------------------
-#undef fix
-#define fix x1
-#undef data
-#define data x2
-
-bit7IsSet:
- ifrclr phase, USBMINUS ;[62] check phase only if D- changed
- lpm ;[63]
- in phase, USBIN ;[64] <- phase (one cycle too late)
- ori shift, 1 << 7 ;[65]
- nop ;[66]
-;;;;rjmp bit0AfterSet ; -> [00] == [67] moved block up to save jump
-bit0AfterSet:
- eor fix, shift ;[00]
-#undef fix
-#define fix x2
-#undef data
-#define data x1 /* we now have result in data, fix is reset to 0xff */
- ifioclr USBIN, USBMINUS ;[01] <--- sample 0
- rjmp bit0IsClr ;[02]
- andi shift, ~(7 << 0) ;[03]
- breq unstuff0s ;[04]
- in phase, USBIN ;[05] <- phase
- rjmp bit1AfterSet ;[06]
-unstuff0s:
- in phase, USBIN ;[06] <- phase (one cycle too late)
- andi fix, ~(1 << 0) ;[07]
- ifioclr USBIN, USBMINUS ;[00]
- ifioset USBIN, USBPLUS ;[01]
- rjmp bit0IsClr ;[02] executed if first expr false or second true
-se0AndStore: ; executed only if both bits 0
- st y+, x1 ;[15/17] cycles after start of byte
- rjmp se0 ;[17/19]
-
-bit0IsClr:
- ifrset phase, USBMINUS ;[04] check phase only if D- changed
- lpm ;[05]
- in phase, USBIN ;[06] <- phase (one cycle too late)
- ori shift, 1 << 0 ;[07]
-bit1AfterClr:
- andi phase, USBMASK ;[08]
- ifioset USBIN, USBMINUS ;[09] <--- sample 1
- rjmp bit1IsSet ;[10]
- breq se0AndStore ;[11] if D- was 0 in bits 0 AND 1 and D+ was 0 in between, we have SE0
- andi shift, ~(7 << 1) ;[12]
- in phase, USBIN ;[13] <- phase
- breq unstuff1c ;[14]
- rjmp bit2AfterClr ;[15]
-unstuff1c:
- andi fix, ~(1 << 1) ;[16]
- nop2 ;[08]
- nop2 ;[10]
-bit1IsSet:
- ifrclr phase, USBMINUS ;[12] check phase only if D- changed
- lpm ;[13]
- in phase, USBIN ;[14] <- phase (one cycle too late)
- ori shift, 1 << 1 ;[15]
- nop ;[16]
-bit2AfterSet:
- ifioclr USBIN, USBMINUS ;[17] <--- sample 2
- rjmp bit2IsClr ;[18]
- andi shift, ~(7 << 2) ;[19]
- breq unstuff2s ;[20]
- in phase, USBIN ;[21] <- phase
- rjmp bit3AfterSet ;[22]
-unstuff2s:
- in phase, USBIN ;[22] <- phase (one cycle too late)
- andi fix, ~(1 << 2) ;[23]
- nop2 ;[16]
- nop2 ;[18]
-bit2IsClr:
- ifrset phase, USBMINUS ;[20] check phase only if D- changed
- lpm ;[21]
- in phase, USBIN ;[22] <- phase (one cycle too late)
- ori shift, 1 << 2 ;[23]
-bit3AfterClr:
- st y+, data ;[24]
-entryAfterClr:
- ifioset USBIN, USBMINUS ;[26] <--- sample 3
- rjmp bit3IsSet ;[27]
- andi shift, ~(7 << 3) ;[28]
- breq unstuff3c ;[29]
- in phase, USBIN ;[30] <- phase
- rjmp bit4AfterClr ;[31]
-unstuff3c:
- in phase, USBIN ;[31] <- phase (one cycle too late)
- andi fix, ~(1 << 3) ;[32]
- nop2 ;[25]
- nop2 ;[27]
-bit3IsSet:
- ifrclr phase, USBMINUS ;[29] check phase only if D- changed
- lpm ;[30]
- in phase, USBIN ;[31] <- phase (one cycle too late)
- ori shift, 1 << 3 ;[32]
-bit4AfterSet:
- mov data, fix ;[33] undo this move by swapping defines
-#undef fix
-#define fix x1
-#undef data
-#define data x2
- ifioclr USBIN, USBMINUS ;[34] <--- sample 4
- rjmp bit4IsClr ;[35]
- andi shift, ~(7 << 4) ;[36]
- breq unstuff4s ;[37]
- in phase, USBIN ;[38] <- phase
- rjmp bit5AfterSet ;[39]
-unstuff4s:
- in phase, USBIN ;[39] <- phase (one cycle too late)
- andi fix, ~(1 << 4) ;[40]
- nop2 ;[33]
- nop2 ;[35]
-bit4IsClr:
- ifrset phase, USBMINUS ;[37] check phase only if D- changed
- lpm ;[38]
- in phase, USBIN ;[39] <- phase (one cycle too late)
- ori shift, 1 << 4 ;[40]
-bit5AfterClr:
- ser data ;[41]
- ifioset USBIN, USBMINUS ;[42] <--- sample 5
- rjmp bit5IsSet ;[43]
- andi shift, ~(7 << 5) ;[44]
- breq unstuff5c ;[45]
- in phase, USBIN ;[46] <- phase
- rjmp bit6AfterClr ;[47]
-unstuff5c:
- in phase, USBIN ;[47] <- phase (one cycle too late)
- andi fix, ~(1 << 5) ;[48]
- nop2 ;[41]
- nop2 ;[43]
-bit5IsSet:
- ifrclr phase, USBMINUS ;[45] check phase only if D- changed
- lpm ;[46]
- in phase, USBIN ;[47] <- phase (one cycle too late)
- ori shift, 1 << 5 ;[48]
-bit6AfterSet:
- subi cnt, 1 ;[49]
- brcs jumpToOverflow ;[50]
- ifioclr USBIN, USBMINUS ;[51] <--- sample 6
- rjmp bit6IsClr ;[52]
- andi shift, ~(3 << 6) ;[53]
- cpi shift, 2 ;[54]
- in phase, USBIN ;[55] <- phase
- brlt unstuff6s ;[56]
- rjmp bit7AfterSet ;[57]
-
-jumpToOverflow:
- rjmp overflow
-
-unstuff6s:
- andi fix, ~(1 << 6) ;[50]
- lpm ;[51]
-bit6IsClr:
- ifrset phase, USBMINUS ;[54] check phase only if D- changed
- lpm ;[55]
- in phase, USBIN ;[56] <- phase (one cycle too late)
- ori shift, 1 << 6 ;[57]
- nop ;[58]
-bit7AfterClr:
- ifioset USBIN, USBMINUS ;[59] <--- sample 7
- rjmp bit7IsSet ;[60]
- andi shift, ~(1 << 7) ;[61]
- cpi shift, 4 ;[62]
- in phase, USBIN ;[63] <- phase
- brlt unstuff7c ;[64]
- rjmp bit0AfterClr ;[65] -> [00] == [67]
-unstuff7c:
- andi fix, ~(1 << 7) ;[58]
- nop ;[59]
- rjmp bit7IsSet ;[60]
-
-bit7IsClr:
- ifrset phase, USBMINUS ;[62] check phase only if D- changed
- lpm ;[63]
- in phase, USBIN ;[64] <- phase (one cycle too late)
- ori shift, 1 << 7 ;[65]
- nop ;[66]
-;;;;rjmp bit0AfterClr ; -> [00] == [67] moved block up to save jump
-bit0AfterClr:
- eor fix, shift ;[00]
-#undef fix
-#define fix x2
-#undef data
-#define data x1 /* we now have result in data, fix is reset to 0xff */
- ifioset USBIN, USBMINUS ;[01] <--- sample 0
- rjmp bit0IsSet ;[02]
- andi shift, ~(7 << 0) ;[03]
- breq unstuff0c ;[04]
- in phase, USBIN ;[05] <- phase
- rjmp bit1AfterClr ;[06]
-unstuff0c:
- in phase, USBIN ;[06] <- phase (one cycle too late)
- andi fix, ~(1 << 0) ;[07]
- ifioclr USBIN, USBMINUS ;[00]
- ifioset USBIN, USBPLUS ;[01]
- rjmp bit0IsSet ;[02] executed if first expr false or second true
- rjmp se0AndStore ;[03] executed only if both bits 0
-bit0IsSet:
- ifrclr phase, USBMINUS ;[04] check phase only if D- changed
- lpm ;[05]
- in phase, USBIN ;[06] <- phase (one cycle too late)
- ori shift, 1 << 0 ;[07]
-bit1AfterSet:
- andi shift, ~(7 << 1) ;[08] compensated by "ori shift, 1<<1" if bit1IsClr
- ifioclr USBIN, USBMINUS ;[09] <--- sample 1
- rjmp bit1IsClr ;[10]
- breq unstuff1s ;[11]
- nop2 ;[12] do not check for SE0 if bit 0 was 1
- in phase, USBIN ;[14] <- phase (one cycle too late)
- rjmp bit2AfterSet ;[15]
-unstuff1s:
- in phase, USBIN ;[13] <- phase
- andi fix, ~(1 << 1) ;[14]
- lpm ;[07]
- nop2 ;[10]
-bit1IsClr:
- ifrset phase, USBMINUS ;[12] check phase only if D- changed
- lpm ;[13]
- in phase, USBIN ;[14] <- phase (one cycle too late)
- ori shift, 1 << 1 ;[15]
- nop ;[16]
-bit2AfterClr:
- ifioset USBIN, USBMINUS ;[17] <--- sample 2
- rjmp bit2IsSet ;[18]
- andi shift, ~(7 << 2) ;[19]
- breq unstuff2c ;[20]
- in phase, USBIN ;[21] <- phase
- rjmp bit3AfterClr ;[22]
-unstuff2c:
- in phase, USBIN ;[22] <- phase (one cycle too late)
- andi fix, ~(1 << 2) ;[23]
- nop2 ;[16]
- nop2 ;[18]
-bit2IsSet:
- ifrclr phase, USBMINUS ;[20] check phase only if D- changed
- lpm ;[21]
- in phase, USBIN ;[22] <- phase (one cycle too late)
- ori shift, 1 << 2 ;[23]
-bit3AfterSet:
- st y+, data ;[24]
-entryAfterSet:
- ifioclr USBIN, USBMINUS ;[26] <--- sample 3
- rjmp bit3IsClr ;[27]
- andi shift, ~(7 << 3) ;[28]
- breq unstuff3s ;[29]
- in phase, USBIN ;[30] <- phase
- rjmp bit4AfterSet ;[31]
-unstuff3s:
- in phase, USBIN ;[31] <- phase (one cycle too late)
- andi fix, ~(1 << 3) ;[32]
- nop2 ;[25]
- nop2 ;[27]
-bit3IsClr:
- ifrset phase, USBMINUS ;[29] check phase only if D- changed
- lpm ;[30]
- in phase, USBIN ;[31] <- phase (one cycle too late)
- ori shift, 1 << 3 ;[32]
-bit4AfterClr:
- mov data, fix ;[33] undo this move by swapping defines
-#undef fix
-#define fix x1
-#undef data
-#define data x2
- ifioset USBIN, USBMINUS ;[34] <--- sample 4
- rjmp bit4IsSet ;[35]
- andi shift, ~(7 << 4) ;[36]
- breq unstuff4c ;[37]
- in phase, USBIN ;[38] <- phase
- rjmp bit5AfterClr ;[39]
-unstuff4c:
- in phase, USBIN ;[39] <- phase (one cycle too late)
- andi fix, ~(1 << 4) ;[40]
- nop2 ;[33]
- nop2 ;[35]
-bit4IsSet:
- ifrclr phase, USBMINUS ;[37] check phase only if D- changed
- lpm ;[38]
- in phase, USBIN ;[39] <- phase (one cycle too late)
- ori shift, 1 << 4 ;[40]
-bit5AfterSet:
- ser data ;[41]
- ifioclr USBIN, USBMINUS ;[42] <--- sample 5
- rjmp bit5IsClr ;[43]
- andi shift, ~(7 << 5) ;[44]
- breq unstuff5s ;[45]
- in phase, USBIN ;[46] <- phase
- rjmp bit6AfterSet ;[47]
-unstuff5s:
- in phase, USBIN ;[47] <- phase (one cycle too late)
- andi fix, ~(1 << 5) ;[48]
- nop2 ;[41]
- nop2 ;[43]
-bit5IsClr:
- ifrset phase, USBMINUS ;[45] check phase only if D- changed
- lpm ;[46]
- in phase, USBIN ;[47] <- phase (one cycle too late)
- ori shift, 1 << 5 ;[48]
-bit6AfterClr:
- subi cnt, 1 ;[49]
- brcs overflow ;[50]
- ifioset USBIN, USBMINUS ;[51] <--- sample 6
- rjmp bit6IsSet ;[52]
- andi shift, ~(3 << 6) ;[53]
- cpi shift, 2 ;[54]
- in phase, USBIN ;[55] <- phase
- brlt unstuff6c ;[56]
- rjmp bit7AfterClr ;[57]
-unstuff6c:
- andi fix, ~(1 << 6) ;[50]
- lpm ;[51]
-bit6IsSet:
- ifrclr phase, USBMINUS ;[54] check phase only if D- changed
- lpm ;[55]
- in phase, USBIN ;[56] <- phase (one cycle too late)
- ori shift, 1 << 6 ;[57]
-bit7AfterSet:
- ifioclr USBIN, USBMINUS ;[59] <--- sample 7
- rjmp bit7IsClr ;[60]
- andi shift, ~(1 << 7) ;[61]
- cpi shift, 4 ;[62]
- in phase, USBIN ;[63] <- phase
- brlt unstuff7s ;[64]
- rjmp bit0AfterSet ;[65] -> [00] == [67]
-unstuff7s:
- andi fix, ~(1 << 7) ;[58]
- nop ;[59]
- rjmp bit7IsClr ;[60]
-
-macro POP_STANDARD ; 14 cycles
- pop r0
- pop cnt
- pop x3
- pop x2
- pop x1
- pop shift
- pop YH
- endm
-macro POP_RETI ; 5 cycles
- pop YL
- out SREG, YL
- pop YL
- endm
-
-#include "asmcommon.inc"
-
-;----------------------------------------------------------------------------
-; Transmitting data
-;----------------------------------------------------------------------------
-
-txByteLoop:
-txBitloop:
-stuffN1Delay: ; [03]
- ror shift ;[-5] [11] [63]
- brcc doExorN1 ;[-4] [64]
- subi x3, 1 ;[-3]
- brne commonN1 ;[-2]
- lsl shift ;[-1] compensate ror after rjmp stuffDelay
- nop ;[00] stuffing consists of just waiting 8 cycles
- rjmp stuffN1Delay ;[01] after ror, C bit is reliably clear
-
-sendNakAndReti:
- ldi cnt, USBPID_NAK ;[-19]
- rjmp sendCntAndReti ;[-18]
-sendAckAndReti:
- ldi cnt, USBPID_ACK ;[-17]
-sendCntAndReti:
- mov r0, cnt ;[-16]
- ldi YL, 0 ;[-15] R0 address is 0
- ldi YH, 0 ;[-14]
- ldi cnt, 2 ;[-13]
-; rjmp usbSendAndReti fallthrough
-
-; USB spec says:
-; idle = J
-; J = (D+ = 0), (D- = 1) or USBOUT = 0x01
-; K = (D+ = 1), (D- = 0) or USBOUT = 0x02
-; Spec allows 7.5 bit times from EOP to SOP for replies (= 60 cycles)
-
-;usbSend:
-;pointer to data in 'Y'
-;number of bytes in 'cnt' -- including sync byte
-;uses: x1...x3, shift, cnt, Y [x1 = mirror USBOUT, x2 = USBMASK, x3 = bitstuff cnt]
-;Numbers in brackets are time since first bit of sync pattern is sent (start of instruction)
-usbSendAndReti:
- in x2, USBDDR ;[-10] 10 cycles until SOP
- ori x2, USBMASK ;[-9]
- sbi USBOUT, USBMINUS ;[-8] prepare idle state; D+ and D- must have been 0 (no pullups)
- out USBDDR, x2 ;[-6] <--- acquire bus
- in x1, USBOUT ;[-5] port mirror for tx loop
- ldi shift, 0x40 ;[-4] sync byte is first byte sent (we enter loop after ror)
- ldi x2, USBMASK ;[-3]
-doExorN1:
- eor x1, x2 ;[-2] [06] [62]
- ldi x3, 6 ;[-1] [07] [63]
-commonN1:
-stuffN2Delay:
- out USBOUT, x1 ;[00] [08] [64] <--- set bit
- ror shift ;[01]
- brcc doExorN2 ;[02]
- subi x3, 1 ;[03]
- brne commonN2 ;[04]
- lsl shift ;[05] compensate ror after rjmp stuffDelay
- rjmp stuffN2Delay ;[06] after ror, C bit is reliably clear
-doExorN2:
- eor x1, x2 ;[04] [12]
- ldi x3, 6 ;[05] [13]
-commonN2:
- nop2 ;[06] [14]
- subi cnt, 171 ;[08] [16] trick: (3 * 171) & 0xff = 1
- out USBOUT, x1 ;[09] [17] <--- set bit
- brcs txBitloop ;[10] [27] [44]
-
-stuff6Delay:
- ror shift ;[45] [53]
- brcc doExor6 ;[46]
- subi x3, 1 ;[47]
- brne common6 ;[48]
- lsl shift ;[49] compensate ror after rjmp stuffDelay
- nop ;[50] stuffing consists of just waiting 8 cycles
- rjmp stuff6Delay ;[51] after ror, C bit is reliably clear
-doExor6:
- eor x1, x2 ;[48] [56]
- ldi x3, 6 ;[49]
-common6:
-stuff7Delay:
- ror shift ;[50] [58]
- out USBOUT, x1 ;[51] <--- set bit
- brcc doExor7 ;[52]
- subi x3, 1 ;[53]
- brne common7 ;[54]
- lsl shift ;[55] compensate ror after rjmp stuffDelay
- rjmp stuff7Delay ;[56] after ror, C bit is reliably clear
-doExor7:
- eor x1, x2 ;[54] [62]
- ldi x3, 6 ;[55]
-common7:
- ld shift, y+ ;[56]
- nop ;[58]
- tst cnt ;[59]
- out USBOUT, x1 ;[60] [00]<--- set bit
- brne txByteLoop ;[61] [01]
-;make SE0:
- cbr x1, USBMASK ;[02] prepare SE0 [spec says EOP may be 15 to 18 cycles]
- lds x2, usbNewDeviceAddr;[03]
- lsl x2 ;[05] we compare with left shifted address
- subi YL, 2 + 0 ;[06] Only assign address on data packets, not ACK/NAK in r0
- sbci YH, 0 ;[07]
- out USBOUT, x1 ;[00] <-- out SE0 -- from now 2 bits = 16 cycles until bus idle
-;2006-03-06: moved transfer of new address to usbDeviceAddr from C-Code to asm:
-;set address only after data packet was sent, not after handshake
- breq skipAddrAssign ;[01]
- sts usbDeviceAddr, x2 ; if not skipped: SE0 is one cycle longer
-skipAddrAssign:
-;end of usbDeviceAddress transfer
- ldi x2, 1<<USB_INTR_PENDING_BIT;[03] int0 occurred during TX -- clear pending flag
- USB_STORE_PENDING(x2) ;[04]
- ori x1, USBIDLE ;[05]
- in x2, USBDDR ;[06]
- cbr x2, USBMASK ;[07] set both pins to input
- mov x3, x1 ;[08]
- cbr x3, USBMASK ;[09] configure no pullup on both pins
- lpm ;[10]
- lpm ;[13]
- out USBOUT, x1 ;[16] <-- out J (idle) -- end of SE0 (EOP signal)
- out USBDDR, x2 ;[17] <-- release bus now
- out USBOUT, x3 ;[18] <-- ensure no pull-up resistors are active
- rjmp doReturn
-
-
-
-/*****************************************************************************
-The following PHP script generates a code skeleton for the receiver routine:
-
-<?php
-
-function printCmdBuffer($thisBit)
-{
-global $cycle;
-
- $nextBit = ($thisBit + 1) % 8;
- $s = ob_get_contents();
- ob_end_clean();
- $s = str_replace("#", $thisBit, $s);
- $s = str_replace("@", $nextBit, $s);
- $lines = explode("\n", $s);
- for($i = 0; $i < count($lines); $i++){
- $s = $lines[$i];
- if(ereg("\\[([0-9-][0-9])\\]", $s, $regs)){
- $c = $cycle + (int)$regs[1];
- $s = ereg_replace("\\[[0-9-][0-9]\\]", sprintf("[%02d]", $c), $s);
- }
- if(strlen($s) > 0)
- echo "$s\n";
- }
-}
-
-function printBit($isAfterSet, $bitNum)
-{
- ob_start();
- if($isAfterSet){
-?>
- ifioclr USBIN, USBMINUS ;[00] <--- sample
- rjmp bit#IsClr ;[01]
- andi shift, ~(7 << #) ;[02]
- breq unstuff#s ;[03]
- in phase, USBIN ;[04] <- phase
- rjmp bit@AfterSet ;[05]
-unstuff#s:
- in phase, USBIN ;[05] <- phase (one cycle too late)
- andi fix, ~(1 << #) ;[06]
- nop2 ;[-1]
- nop2 ;[01]
-bit#IsClr:
- ifrset phase, USBMINUS ;[03] check phase only if D- changed
- lpm ;[04]
- in phase, USBIN ;[05] <- phase (one cycle too late)
- ori shift, 1 << # ;[06]
-<?php
- }else{
-?>
- ifioset USBIN, USBMINUS ;[00] <--- sample
- rjmp bit#IsSet ;[01]
- andi shift, ~(7 << #) ;[02]
- breq unstuff#c ;[03]
- in phase, USBIN ;[04] <- phase
- rjmp bit@AfterClr ;[05]
-unstuff#c:
- in phase, USBIN ;[05] <- phase (one cycle too late)
- andi fix, ~(1 << #) ;[06]
- nop2 ;[-1]
- nop2 ;[01]
-bit#IsSet:
- ifrclr phase, USBMINUS ;[03] check phase only if D- changed
- lpm ;[04]
- in phase, USBIN ;[05] <- phase (one cycle too late)
- ori shift, 1 << # ;[06]
-<?php
- }
- printCmdBuffer($bitNum);
-}
-
-$bitStartCycles = array(1, 9, 17, 26, 34, 42, 51, 59);
-for($i = 0; $i < 16; $i++){
- $bit = $i % 8;
- $emitClrCode = ($i + (int)($i / 8)) % 2;
- $cycle = $bitStartCycles[$bit];
- if($emitClrCode){
- printf("bit%dAfterClr:\n", $bit);
- }else{
- printf("bit%dAfterSet:\n", $bit);
- }
- ob_start();
- echo " ***** ;[-1]\n";
- printCmdBuffer($bit);
- printBit(!$emitClrCode, $bit);
- if($i == 7)
- echo "\n";
-}
-
-?>
-*****************************************************************************/
+++ /dev/null
-/* Name: usbdrvasm15.inc
- * Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
- * Author: contributed by V. Bosch
- * Creation Date: 2007-08-06
- * Tabsize: 4
- * Copyright: (c) 2007 by OBJECTIVE DEVELOPMENT Software GmbH
- * License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
- * Revision: $Id: usbdrvasm15.inc 740 2009-04-13 18:23:31Z cs $
- */
-
-/* Do not link this file! Link usbdrvasm.S instead, which includes the
- * appropriate implementation!
- */
-
-/*
-General Description:
-This file is the 15 MHz version of the asssembler part of the USB driver. It
-requires a 15 MHz crystal (not a ceramic resonator and not a calibrated RC
-oscillator).
-
-See usbdrv.h for a description of the entire driver.
-
-Since almost all of this code is timing critical, don't change unless you
-really know what you are doing! Many parts require not only a maximum number
-of CPU cycles, but even an exact number of cycles!
-*/
-
-;max stack usage: [ret(2), YL, SREG, YH, bitcnt, shift, x1, x2, x3, x4, cnt] = 12 bytes
-;nominal frequency: 15 MHz -> 10.0 cycles per bit, 80.0 cycles per byte
-; Numbers in brackets are clocks counted from center of last sync bit
-; when instruction starts
-
-;----------------------------------------------------------------------------
-; order of registers pushed:
-; YL, SREG [sofError] YH, shift, x1, x2, x3, bitcnt, cnt, x4
-;----------------------------------------------------------------------------
-USB_INTR_VECTOR:
- push YL ;2 push only what is necessary to sync with edge ASAP
- in YL, SREG ;1
- push YL ;2
-;----------------------------------------------------------------------------
-; Synchronize with sync pattern:
-;
-; sync byte (D-) pattern LSb to MSb: 01010100 [1 = idle = J, 0 = K]
-; sync up with J to K edge during sync pattern -- use fastest possible loops
-;The first part waits at most 1 bit long since we must be in sync pattern.
-;YL is guarenteed to be < 0x80 because I flag is clear. When we jump to
-;waitForJ, ensure that this prerequisite is met.
-waitForJ:
- inc YL
- sbis USBIN, USBMINUS
- brne waitForJ ; just make sure we have ANY timeout
-;-------------------------------------------------------------------------------
-; The following code results in a sampling window of < 1/4 bit
-; which meets the spec.
-;-------------------------------------------------------------------------------
-waitForK: ;-
- sbis USBIN, USBMINUS ;1 [00] <-- sample
- rjmp foundK ;2 [01]
- sbis USBIN, USBMINUS ; <-- sample
- rjmp foundK
- sbis USBIN, USBMINUS ; <-- sample
- rjmp foundK
- sbis USBIN, USBMINUS ; <-- sample
- rjmp foundK
- sbis USBIN, USBMINUS ; <-- sample
- rjmp foundK
- sbis USBIN, USBMINUS ; <-- sample
- rjmp foundK
-#if USB_COUNT_SOF
- lds YL, usbSofCount
- inc YL
- sts usbSofCount, YL
-#endif /* USB_COUNT_SOF */
-#ifdef USB_SOF_HOOK
- USB_SOF_HOOK
-#endif
- rjmp sofError
-;------------------------------------------------------------------------------
-; {3, 5} after falling D- edge, average delay: 4 cycles [we want 5 for
-; center sampling]
-; we have 1 bit time for setup purposes, then sample again.
-; Numbers in brackets are cycles from center of first sync (double K)
-; bit after the instruction
-;------------------------------------------------------------------------------
-foundK: ;- [02]
- lds YL, usbInputBufOffset;2 [03+04] tx loop
- push YH ;2 [05+06]
- clr YH ;1 [07]
- subi YL, lo8(-(usbRxBuf)) ;1 [08] [rx loop init]
- sbci YH, hi8(-(usbRxBuf)) ;1 [09] [rx loop init]
- push shift ;2 [10+11]
- ser shift ;1 [12]
- sbis USBIN, USBMINUS ;1 [-1] [13] <--sample:we want two bits K (sample 1 cycle too early)
- rjmp haveTwoBitsK ;2 [00] [14]
- pop shift ;2 [15+16] undo the push from before
- pop YH ;2 [17+18] undo the push from before
- rjmp waitForK ;2 [19+20] this was not the end of sync, retry
-; The entire loop from waitForK until rjmp waitForK above must not exceed two
-; bit times (= 20 cycles).
-
-;----------------------------------------------------------------------------
-; push more registers and initialize values while we sample the first bits:
-;----------------------------------------------------------------------------
-haveTwoBitsK: ;- [01]
- push x1 ;2 [02+03]
- push x2 ;2 [04+05]
- push x3 ;2 [06+07]
- push bitcnt ;2 [08+09]
- in x1, USBIN ;1 [00] [10] <-- sample bit 0
- bst x1, USBMINUS ;1 [01]
- bld shift, 0 ;1 [02]
- push cnt ;2 [03+04]
- ldi cnt, USB_BUFSIZE ;1 [05]
- push x4 ;2 [06+07] tx loop
- rjmp rxLoop ;2 [08]
-;----------------------------------------------------------------------------
-; Receiver loop (numbers in brackets are cycles within byte after instr)
-;----------------------------------------------------------------------------
-unstuff0: ;- [07] (branch taken)
- andi x3, ~0x01 ;1 [08]
- mov x1, x2 ;1 [09] x2 contains last sampled (stuffed) bit
- in x2, USBIN ;1 [00] [10] <-- sample bit 1 again
- andi x2, USBMASK ;1 [01]
- breq se0Hop ;1 [02] SE0 check for bit 1
- ori shift, 0x01 ;1 [03] 0b00000001
- nop ;1 [04]
- rjmp didUnstuff0 ;2 [05]
-;-----------------------------------------------------
-unstuff1: ;- [05] (branch taken)
- mov x2, x1 ;1 [06] x1 contains last sampled (stuffed) bit
- andi x3, ~0x02 ;1 [07]
- ori shift, 0x02 ;1 [08] 0b00000010
- nop ;1 [09]
- in x1, USBIN ;1 [00] [10] <-- sample bit 2 again
- andi x1, USBMASK ;1 [01]
- breq se0Hop ;1 [02] SE0 check for bit 2
- rjmp didUnstuff1 ;2 [03]
-;-----------------------------------------------------
-unstuff2: ;- [05] (branch taken)
- andi x3, ~0x04 ;1 [06]
- ori shift, 0x04 ;1 [07] 0b00000100
- mov x1, x2 ;1 [08] x2 contains last sampled (stuffed) bit
- nop ;1 [09]
- in x2, USBIN ;1 [00] [10] <-- sample bit 3
- andi x2, USBMASK ;1 [01]
- breq se0Hop ;1 [02] SE0 check for bit 3
- rjmp didUnstuff2 ;2 [03]
-;-----------------------------------------------------
-unstuff3: ;- [00] [10] (branch taken)
- in x2, USBIN ;1 [01] [11] <-- sample stuffed bit 3 one cycle too late
- andi x2, USBMASK ;1 [02]
- breq se0Hop ;1 [03] SE0 check for stuffed bit 3
- andi x3, ~0x08 ;1 [04]
- ori shift, 0x08 ;1 [05] 0b00001000
- rjmp didUnstuff3 ;2 [06]
-;----------------------------------------------------------------------------
-; extra jobs done during bit interval:
-;
-; bit 0: store, clear [SE0 is unreliable here due to bit dribbling in hubs],
-; overflow check, jump to the head of rxLoop
-; bit 1: SE0 check
-; bit 2: SE0 check, recovery from delay [bit 0 tasks took too long]
-; bit 3: SE0 check, recovery from delay [bit 0 tasks took too long]
-; bit 4: SE0 check, none
-; bit 5: SE0 check, none
-; bit 6: SE0 check, none
-; bit 7: SE0 check, reconstruct: x3 is 0 at bit locations we changed, 1 at others
-;----------------------------------------------------------------------------
-rxLoop: ;- [09]
- in x2, USBIN ;1 [00] [10] <-- sample bit 1 (or possibly bit 0 stuffed)
- andi x2, USBMASK ;1 [01]
- brne SkipSe0Hop ;1 [02]
-se0Hop: ;- [02]
- rjmp se0 ;2 [03] SE0 check for bit 1
-SkipSe0Hop: ;- [03]
- ser x3 ;1 [04]
- andi shift, 0xf9 ;1 [05] 0b11111001
- breq unstuff0 ;1 [06]
-didUnstuff0: ;- [06]
- eor x1, x2 ;1 [07]
- bst x1, USBMINUS ;1 [08]
- bld shift, 1 ;1 [09]
- in x1, USBIN ;1 [00] [10] <-- sample bit 2 (or possibly bit 1 stuffed)
- andi x1, USBMASK ;1 [01]
- breq se0Hop ;1 [02] SE0 check for bit 2
- andi shift, 0xf3 ;1 [03] 0b11110011
- breq unstuff1 ;1 [04] do remaining work for bit 1
-didUnstuff1: ;- [04]
- eor x2, x1 ;1 [05]
- bst x2, USBMINUS ;1 [06]
- bld shift, 2 ;1 [07]
- nop2 ;2 [08+09]
- in x2, USBIN ;1 [00] [10] <-- sample bit 3 (or possibly bit 2 stuffed)
- andi x2, USBMASK ;1 [01]
- breq se0Hop ;1 [02] SE0 check for bit 3
- andi shift, 0xe7 ;1 [03] 0b11100111
- breq unstuff2 ;1 [04]
-didUnstuff2: ;- [04]
- eor x1, x2 ;1 [05]
- bst x1, USBMINUS ;1 [06]
- bld shift, 3 ;1 [07]
-didUnstuff3: ;- [07]
- andi shift, 0xcf ;1 [08] 0b11001111
- breq unstuff3 ;1 [09]
- in x1, USBIN ;1 [00] [10] <-- sample bit 4
- andi x1, USBMASK ;1 [01]
- breq se0Hop ;1 [02] SE0 check for bit 4
- eor x2, x1 ;1 [03]
- bst x2, USBMINUS ;1 [04]
- bld shift, 4 ;1 [05]
-didUnstuff4: ;- [05]
- andi shift, 0x9f ;1 [06] 0b10011111
- breq unstuff4 ;1 [07]
- nop2 ;2 [08+09]
- in x2, USBIN ;1 [00] [10] <-- sample bit 5
- andi x2, USBMASK ;1 [01]
- breq se0 ;1 [02] SE0 check for bit 5
- eor x1, x2 ;1 [03]
- bst x1, USBMINUS ;1 [04]
- bld shift, 5 ;1 [05]
-didUnstuff5: ;- [05]
- andi shift, 0x3f ;1 [06] 0b00111111
- breq unstuff5 ;1 [07]
- nop2 ;2 [08+09]
- in x1, USBIN ;1 [00] [10] <-- sample bit 6
- andi x1, USBMASK ;1 [01]
- breq se0 ;1 [02] SE0 check for bit 6
- eor x2, x1 ;1 [03]
- bst x2, USBMINUS ;1 [04]
- bld shift, 6 ;1 [05]
-didUnstuff6: ;- [05]
- cpi shift, 0x02 ;1 [06] 0b00000010
- brlo unstuff6 ;1 [07]
- nop2 ;2 [08+09]
- in x2, USBIN ;1 [00] [10] <-- sample bit 7
- andi x2, USBMASK ;1 [01]
- breq se0 ;1 [02] SE0 check for bit 7
- eor x1, x2 ;1 [03]
- bst x1, USBMINUS ;1 [04]
- bld shift, 7 ;1 [05]
-didUnstuff7: ;- [05]
- cpi shift, 0x04 ;1 [06] 0b00000100
- brlo unstuff7 ;1 [07]
- eor x3, shift ;1 [08] reconstruct: x3 is 0 at bit locations we changed, 1 at others
- nop ;1 [09]
- in x1, USBIN ;1 [00] [10] <-- sample bit 0
- st y+, x3 ;2 [01+02] store data
- eor x2, x1 ;1 [03]
- bst x2, USBMINUS ;1 [04]
- bld shift, 0 ;1 [05]
- subi cnt, 1 ;1 [06]
- brcs overflow ;1 [07]
- rjmp rxLoop ;2 [08]
-;-----------------------------------------------------
-unstuff4: ;- [08]
- andi x3, ~0x10 ;1 [09]
- in x1, USBIN ;1 [00] [10] <-- sample stuffed bit 4
- andi x1, USBMASK ;1 [01]
- breq se0 ;1 [02] SE0 check for stuffed bit 4
- ori shift, 0x10 ;1 [03]
- rjmp didUnstuff4 ;2 [04]
-;-----------------------------------------------------
-unstuff5: ;- [08]
- ori shift, 0x20 ;1 [09]
- in x2, USBIN ;1 [00] [10] <-- sample stuffed bit 5
- andi x2, USBMASK ;1 [01]
- breq se0 ;1 [02] SE0 check for stuffed bit 5
- andi x3, ~0x20 ;1 [03]
- rjmp didUnstuff5 ;2 [04]
-;-----------------------------------------------------
-unstuff6: ;- [08]
- andi x3, ~0x40 ;1 [09]
- in x1, USBIN ;1 [00] [10] <-- sample stuffed bit 6
- andi x1, USBMASK ;1 [01]
- breq se0 ;1 [02] SE0 check for stuffed bit 6
- ori shift, 0x40 ;1 [03]
- rjmp didUnstuff6 ;2 [04]
-;-----------------------------------------------------
-unstuff7: ;- [08]
- andi x3, ~0x80 ;1 [09]
- in x2, USBIN ;1 [00] [10] <-- sample stuffed bit 7
- andi x2, USBMASK ;1 [01]
- breq se0 ;1 [02] SE0 check for stuffed bit 7
- ori shift, 0x80 ;1 [03]
- rjmp didUnstuff7 ;2 [04]
-
-macro POP_STANDARD ; 16 cycles
- pop x4
- pop cnt
- pop bitcnt
- pop x3
- pop x2
- pop x1
- pop shift
- pop YH
- endm
-macro POP_RETI ; 5 cycles
- pop YL
- out SREG, YL
- pop YL
- endm
-
-#include "asmcommon.inc"
-
-;---------------------------------------------------------------------------
-; USB spec says:
-; idle = J
-; J = (D+ = 0), (D- = 1)
-; K = (D+ = 1), (D- = 0)
-; Spec allows 7.5 bit times from EOP to SOP for replies
-;---------------------------------------------------------------------------
-bitstuffN: ;- [04]
- eor x1, x4 ;1 [05]
- clr x2 ;1 [06]
- nop ;1 [07]
- rjmp didStuffN ;1 [08]
-;---------------------------------------------------------------------------
-bitstuff6: ;- [04]
- eor x1, x4 ;1 [05]
- clr x2 ;1 [06]
- rjmp didStuff6 ;1 [07]
-;---------------------------------------------------------------------------
-bitstuff7: ;- [02]
- eor x1, x4 ;1 [03]
- clr x2 ;1 [06]
- nop ;1 [05]
- rjmp didStuff7 ;1 [06]
-;---------------------------------------------------------------------------
-sendNakAndReti: ;- [-19]
- ldi x3, USBPID_NAK ;1 [-18]
- rjmp sendX3AndReti ;1 [-17]
-;---------------------------------------------------------------------------
-sendAckAndReti: ;- [-17]
- ldi cnt, USBPID_ACK ;1 [-16]
-sendCntAndReti: ;- [-16]
- mov x3, cnt ;1 [-15]
-sendX3AndReti: ;- [-15]
- ldi YL, 20 ;1 [-14] x3==r20 address is 20
- ldi YH, 0 ;1 [-13]
- ldi cnt, 2 ;1 [-12]
-; rjmp usbSendAndReti fallthrough
-;---------------------------------------------------------------------------
-;usbSend:
-;pointer to data in 'Y'
-;number of bytes in 'cnt' -- including sync byte [range 2 ... 12]
-;uses: x1...x4, btcnt, shift, cnt, Y
-;Numbers in brackets are time since first bit of sync pattern is sent
-;We need not to match the transfer rate exactly because the spec demands
-;only 1.5% precision anyway.
-usbSendAndReti: ;- [-13] 13 cycles until SOP
- in x2, USBDDR ;1 [-12]
- ori x2, USBMASK ;1 [-11]
- sbi USBOUT, USBMINUS ;2 [-09-10] prepare idle state; D+ and D- must have been 0 (no pullups)
- in x1, USBOUT ;1 [-08] port mirror for tx loop
- out USBDDR, x2 ;1 [-07] <- acquire bus
- ; need not init x2 (bitstuff history) because sync starts with 0
- ldi x4, USBMASK ;1 [-06] exor mask
- ldi shift, 0x80 ;1 [-05] sync byte is first byte sent
- ldi bitcnt, 6 ;1 [-04]
-txBitLoop: ;- [-04] [06]
- sbrs shift, 0 ;1 [-03] [07]
- eor x1, x4 ;1 [-02] [08]
- ror shift ;1 [-01] [09]
-didStuffN: ;- [09]
- out USBOUT, x1 ;1 [00] [10] <-- out N
- ror x2 ;1 [01]
- cpi x2, 0xfc ;1 [02]
- brcc bitstuffN ;1 [03]
- dec bitcnt ;1 [04]
- brne txBitLoop ;1 [05]
- sbrs shift, 0 ;1 [06]
- eor x1, x4 ;1 [07]
- ror shift ;1 [08]
-didStuff6: ;- [08]
- nop ;1 [09]
- out USBOUT, x1 ;1 [00] [10] <-- out 6
- ror x2 ;1 [01]
- cpi x2, 0xfc ;1 [02]
- brcc bitstuff6 ;1 [03]
- sbrs shift, 0 ;1 [04]
- eor x1, x4 ;1 [05]
- ror shift ;1 [06]
- ror x2 ;1 [07]
-didStuff7: ;- [07]
- ldi bitcnt, 6 ;1 [08]
- cpi x2, 0xfc ;1 [09]
- out USBOUT, x1 ;1 [00] [10] <-- out 7
- brcc bitstuff7 ;1 [01]
- ld shift, y+ ;2 [02+03]
- dec cnt ;1 [04]
- brne txBitLoop ;1 [05]
-makeSE0:
- cbr x1, USBMASK ;1 [06] prepare SE0 [spec says EOP may be 19 to 23 cycles]
- lds x2, usbNewDeviceAddr;2 [07+08]
- lsl x2 ;1 [09] we compare with left shifted address
-;2006-03-06: moved transfer of new address to usbDeviceAddr from C-Code to asm:
-;set address only after data packet was sent, not after handshake
- out USBOUT, x1 ;1 [00] [10] <-- out SE0-- from now 2 bits==20 cycl. until bus idle
- subi YL, 20 + 2 ;1 [01] Only assign address on data packets, not ACK/NAK in x3
- sbci YH, 0 ;1 [02]
- breq skipAddrAssign ;1 [03]
- sts usbDeviceAddr, x2 ;2 [04+05] if not skipped: SE0 is one cycle longer
-;----------------------------------------------------------------------------
-;end of usbDeviceAddress transfer
-skipAddrAssign: ;- [03/04]
- ldi x2, 1<<USB_INTR_PENDING_BIT ;1 [05] int0 occurred during TX -- clear pending flag
- USB_STORE_PENDING(x2) ;1 [06]
- ori x1, USBIDLE ;1 [07]
- in x2, USBDDR ;1 [08]
- cbr x2, USBMASK ;1 [09] set both pins to input
- mov x3, x1 ;1 [10]
- cbr x3, USBMASK ;1 [11] configure no pullup on both pins
- ldi x4, 3 ;1 [12]
-se0Delay: ;- [12] [15]
- dec x4 ;1 [13] [16]
- brne se0Delay ;1 [14] [17]
- nop2 ;2 [18+19]
- out USBOUT, x1 ;1 [20] <--out J (idle) -- end of SE0 (EOP sig.)
- out USBDDR, x2 ;1 [21] <--release bus now
- out USBOUT, x3 ;1 [22] <--ensure no pull-up resistors are active
- rjmp doReturn ;1 [23]
-;---------------------------------------------------------------------------
+++ /dev/null
-/* Name: usbdrvasm16.inc
- * Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
- * Author: Christian Starkjohann
- * Creation Date: 2007-06-15
- * Tabsize: 4
- * Copyright: (c) 2007 by OBJECTIVE DEVELOPMENT Software GmbH
- * License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
- * Revision: $Id: usbdrvasm16.inc 760 2009-08-09 18:59:43Z cs $
- */
-
-/* Do not link this file! Link usbdrvasm.S instead, which includes the
- * appropriate implementation!
- */
-
-/*
-General Description:
-This file is the 16 MHz version of the asssembler part of the USB driver. It
-requires a 16 MHz crystal (not a ceramic resonator and not a calibrated RC
-oscillator).
-
-See usbdrv.h for a description of the entire driver.
-
-Since almost all of this code is timing critical, don't change unless you
-really know what you are doing! Many parts require not only a maximum number
-of CPU cycles, but even an exact number of cycles!
-*/
-
-;max stack usage: [ret(2), YL, SREG, YH, bitcnt, shift, x1, x2, x3, x4, cnt] = 12 bytes
-;nominal frequency: 16 MHz -> 10.6666666 cycles per bit, 85.333333333 cycles per byte
-; Numbers in brackets are clocks counted from center of last sync bit
-; when instruction starts
-
-USB_INTR_VECTOR:
-;order of registers pushed: YL, SREG YH, [sofError], bitcnt, shift, x1, x2, x3, x4, cnt
- push YL ;[-25] push only what is necessary to sync with edge ASAP
- in YL, SREG ;[-23]
- push YL ;[-22]
- push YH ;[-20]
-;----------------------------------------------------------------------------
-; Synchronize with sync pattern:
-;----------------------------------------------------------------------------
-;sync byte (D-) pattern LSb to MSb: 01010100 [1 = idle = J, 0 = K]
-;sync up with J to K edge during sync pattern -- use fastest possible loops
-;The first part waits at most 1 bit long since we must be in sync pattern.
-;YL is guarenteed to be < 0x80 because I flag is clear. When we jump to
-;waitForJ, ensure that this prerequisite is met.
-waitForJ:
- inc YL
- sbis USBIN, USBMINUS
- brne waitForJ ; just make sure we have ANY timeout
-waitForK:
-;The following code results in a sampling window of < 1/4 bit which meets the spec.
- sbis USBIN, USBMINUS ;[-15]
- rjmp foundK ;[-14]
- sbis USBIN, USBMINUS
- rjmp foundK
- sbis USBIN, USBMINUS
- rjmp foundK
- sbis USBIN, USBMINUS
- rjmp foundK
- sbis USBIN, USBMINUS
- rjmp foundK
- sbis USBIN, USBMINUS
- rjmp foundK
-#if USB_COUNT_SOF
- lds YL, usbSofCount
- inc YL
- sts usbSofCount, YL
-#endif /* USB_COUNT_SOF */
-#ifdef USB_SOF_HOOK
- USB_SOF_HOOK
-#endif
- rjmp sofError
-foundK: ;[-12]
-;{3, 5} after falling D- edge, average delay: 4 cycles [we want 5 for center sampling]
-;we have 1 bit time for setup purposes, then sample again. Numbers in brackets
-;are cycles from center of first sync (double K) bit after the instruction
- push bitcnt ;[-12]
-; [---] ;[-11]
- lds YL, usbInputBufOffset;[-10]
-; [---] ;[-9]
- clr YH ;[-8]
- subi YL, lo8(-(usbRxBuf));[-7] [rx loop init]
- sbci YH, hi8(-(usbRxBuf));[-6] [rx loop init]
- push shift ;[-5]
-; [---] ;[-4]
- ldi bitcnt, 0x55 ;[-3] [rx loop init]
- sbis USBIN, USBMINUS ;[-2] we want two bits K (sample 2 cycles too early)
- rjmp haveTwoBitsK ;[-1]
- pop shift ;[0] undo the push from before
- pop bitcnt ;[2] undo the push from before
- rjmp waitForK ;[4] this was not the end of sync, retry
-; The entire loop from waitForK until rjmp waitForK above must not exceed two
-; bit times (= 21 cycles).
-
-;----------------------------------------------------------------------------
-; push more registers and initialize values while we sample the first bits:
-;----------------------------------------------------------------------------
-haveTwoBitsK:
- push x1 ;[1]
- push x2 ;[3]
- push x3 ;[5]
- ldi shift, 0 ;[7]
- ldi x3, 1<<4 ;[8] [rx loop init] first sample is inverse bit, compensate that
- push x4 ;[9] == leap
-
- in x1, USBIN ;[11] <-- sample bit 0
- andi x1, USBMASK ;[12]
- bst x1, USBMINUS ;[13]
- bld shift, 7 ;[14]
- push cnt ;[15]
- ldi leap, 0 ;[17] [rx loop init]
- ldi cnt, USB_BUFSIZE;[18] [rx loop init]
- rjmp rxbit1 ;[19] arrives at [21]
-
-;----------------------------------------------------------------------------
-; Receiver loop (numbers in brackets are cycles within byte after instr)
-;----------------------------------------------------------------------------
-
-; duration of unstuffing code should be 10.66666667 cycles. We adjust "leap"
-; accordingly to approximate this value in the long run.
-
-unstuff6:
- andi x2, USBMASK ;[03]
- ori x3, 1<<6 ;[04] will not be shifted any more
- andi shift, ~0x80;[05]
- mov x1, x2 ;[06] sampled bit 7 is actually re-sampled bit 6
- subi leap, -1 ;[07] total duration = 11 bits -> subtract 1/3
- rjmp didUnstuff6 ;[08]
-
-unstuff7:
- ori x3, 1<<7 ;[09] will not be shifted any more
- in x2, USBIN ;[00] [10] re-sample bit 7
- andi x2, USBMASK ;[01]
- andi shift, ~0x80;[02]
- subi leap, 2 ;[03] total duration = 10 bits -> add 1/3
- rjmp didUnstuff7 ;[04]
-
-unstuffEven:
- ori x3, 1<<6 ;[09] will be shifted right 6 times for bit 0
- in x1, USBIN ;[00] [10]
- andi shift, ~0x80;[01]
- andi x1, USBMASK ;[02]
- breq se0 ;[03]
- subi leap, -1 ;[04] total duration = 11 bits -> subtract 1/3
- nop2 ;[05]
- rjmp didUnstuffE ;[06]
-
-unstuffOdd:
- ori x3, 1<<5 ;[09] will be shifted right 4 times for bit 1
- in x2, USBIN ;[00] [10]
- andi shift, ~0x80;[01]
- andi x2, USBMASK ;[02]
- breq se0 ;[03]
- subi leap, -1 ;[04] total duration = 11 bits -> subtract 1/3
- nop2 ;[05]
- rjmp didUnstuffO ;[06]
-
-rxByteLoop:
- andi x1, USBMASK ;[03]
- eor x2, x1 ;[04]
- subi leap, 1 ;[05]
- brpl skipLeap ;[06]
- subi leap, -3 ;1 one leap cycle every 3rd byte -> 85 + 1/3 cycles per byte
- nop ;1
-skipLeap:
- subi x2, 1 ;[08]
- ror shift ;[09]
-didUnstuff6:
- cpi shift, 0xfc ;[10]
- in x2, USBIN ;[00] [11] <-- sample bit 7
- brcc unstuff6 ;[01]
- andi x2, USBMASK ;[02]
- eor x1, x2 ;[03]
- subi x1, 1 ;[04]
- ror shift ;[05]
-didUnstuff7:
- cpi shift, 0xfc ;[06]
- brcc unstuff7 ;[07]
- eor x3, shift ;[08] reconstruct: x3 is 1 at bit locations we changed, 0 at others
- st y+, x3 ;[09] store data
-rxBitLoop:
- in x1, USBIN ;[00] [11] <-- sample bit 0/2/4
- andi x1, USBMASK ;[01]
- eor x2, x1 ;[02]
- andi x3, 0x3f ;[03] topmost two bits reserved for 6 and 7
- subi x2, 1 ;[04]
- ror shift ;[05]
- cpi shift, 0xfc ;[06]
- brcc unstuffEven ;[07]
-didUnstuffE:
- lsr x3 ;[08]
- lsr x3 ;[09]
-rxbit1:
- in x2, USBIN ;[00] [10] <-- sample bit 1/3/5
- andi x2, USBMASK ;[01]
- breq se0 ;[02]
- eor x1, x2 ;[03]
- subi x1, 1 ;[04]
- ror shift ;[05]
- cpi shift, 0xfc ;[06]
- brcc unstuffOdd ;[07]
-didUnstuffO:
- subi bitcnt, 0xab;[08] == addi 0x55, 0x55 = 0x100/3
- brcs rxBitLoop ;[09]
-
- subi cnt, 1 ;[10]
- in x1, USBIN ;[00] [11] <-- sample bit 6
- brcc rxByteLoop ;[01]
- rjmp overflow
-
-macro POP_STANDARD ; 14 cycles
- pop cnt
- pop x4
- pop x3
- pop x2
- pop x1
- pop shift
- pop bitcnt
- endm
-macro POP_RETI ; 7 cycles
- pop YH
- pop YL
- out SREG, YL
- pop YL
- endm
-
-#include "asmcommon.inc"
-
-; USB spec says:
-; idle = J
-; J = (D+ = 0), (D- = 1)
-; K = (D+ = 1), (D- = 0)
-; Spec allows 7.5 bit times from EOP to SOP for replies
-
-bitstuffN:
- eor x1, x4 ;[5]
- ldi x2, 0 ;[6]
- nop2 ;[7]
- nop ;[9]
- out USBOUT, x1 ;[10] <-- out
- rjmp didStuffN ;[0]
-
-bitstuff6:
- eor x1, x4 ;[5]
- ldi x2, 0 ;[6] Carry is zero due to brcc
- rol shift ;[7] compensate for ror shift at branch destination
- rjmp didStuff6 ;[8]
-
-bitstuff7:
- ldi x2, 0 ;[2] Carry is zero due to brcc
- rjmp didStuff7 ;[3]
-
-
-sendNakAndReti:
- ldi x3, USBPID_NAK ;[-18]
- rjmp sendX3AndReti ;[-17]
-sendAckAndReti:
- ldi cnt, USBPID_ACK ;[-17]
-sendCntAndReti:
- mov x3, cnt ;[-16]
-sendX3AndReti:
- ldi YL, 20 ;[-15] x3==r20 address is 20
- ldi YH, 0 ;[-14]
- ldi cnt, 2 ;[-13]
-; rjmp usbSendAndReti fallthrough
-
-;usbSend:
-;pointer to data in 'Y'
-;number of bytes in 'cnt' -- including sync byte [range 2 ... 12]
-;uses: x1...x4, btcnt, shift, cnt, Y
-;Numbers in brackets are time since first bit of sync pattern is sent
-;We don't match the transfer rate exactly (don't insert leap cycles every third
-;byte) because the spec demands only 1.5% precision anyway.
-usbSendAndReti: ; 12 cycles until SOP
- in x2, USBDDR ;[-12]
- ori x2, USBMASK ;[-11]
- sbi USBOUT, USBMINUS;[-10] prepare idle state; D+ and D- must have been 0 (no pullups)
- in x1, USBOUT ;[-8] port mirror for tx loop
- out USBDDR, x2 ;[-7] <- acquire bus
-; need not init x2 (bitstuff history) because sync starts with 0
- ldi x4, USBMASK ;[-6] exor mask
- ldi shift, 0x80 ;[-5] sync byte is first byte sent
-txByteLoop:
- ldi bitcnt, 0x35 ;[-4] [6] binary 0011 0101
-txBitLoop:
- sbrs shift, 0 ;[-3] [7]
- eor x1, x4 ;[-2] [8]
- out USBOUT, x1 ;[-1] [9] <-- out N
- ror shift ;[0] [10]
- ror x2 ;[1]
-didStuffN:
- cpi x2, 0xfc ;[2]
- brcc bitstuffN ;[3]
- lsr bitcnt ;[4]
- brcc txBitLoop ;[5]
- brne txBitLoop ;[6]
-
- sbrs shift, 0 ;[7]
- eor x1, x4 ;[8]
-didStuff6:
- out USBOUT, x1 ;[-1] [9] <-- out 6
- ror shift ;[0] [10]
- ror x2 ;[1]
- cpi x2, 0xfc ;[2]
- brcc bitstuff6 ;[3]
- ror shift ;[4]
-didStuff7:
- ror x2 ;[5]
- sbrs x2, 7 ;[6]
- eor x1, x4 ;[7]
- nop ;[8]
- cpi x2, 0xfc ;[9]
- out USBOUT, x1 ;[-1][10] <-- out 7
- brcc bitstuff7 ;[0] [11]
- ld shift, y+ ;[1]
- dec cnt ;[3]
- brne txByteLoop ;[4]
-;make SE0:
- cbr x1, USBMASK ;[5] prepare SE0 [spec says EOP may be 21 to 25 cycles]
- lds x2, usbNewDeviceAddr;[6]
- lsl x2 ;[8] we compare with left shifted address
- subi YL, 20 + 2 ;[9] Only assign address on data packets, not ACK/NAK in x3
- sbci YH, 0 ;[10]
- out USBOUT, x1 ;[11] <-- out SE0 -- from now 2 bits = 22 cycles until bus idle
-;2006-03-06: moved transfer of new address to usbDeviceAddr from C-Code to asm:
-;set address only after data packet was sent, not after handshake
- breq skipAddrAssign ;[0]
- sts usbDeviceAddr, x2; if not skipped: SE0 is one cycle longer
-skipAddrAssign:
-;end of usbDeviceAddress transfer
- ldi x2, 1<<USB_INTR_PENDING_BIT;[2] int0 occurred during TX -- clear pending flag
- USB_STORE_PENDING(x2) ;[3]
- ori x1, USBIDLE ;[4]
- in x2, USBDDR ;[5]
- cbr x2, USBMASK ;[6] set both pins to input
- mov x3, x1 ;[7]
- cbr x3, USBMASK ;[8] configure no pullup on both pins
- ldi x4, 4 ;[9]
-se0Delay:
- dec x4 ;[10] [13] [16] [19]
- brne se0Delay ;[11] [14] [17] [20]
- out USBOUT, x1 ;[21] <-- out J (idle) -- end of SE0 (EOP signal)
- out USBDDR, x2 ;[22] <-- release bus now
- out USBOUT, x3 ;[23] <-- ensure no pull-up resistors are active
- rjmp doReturn
+++ /dev/null
-/* Name: usbdrvasm165.inc
- * Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
- * Author: Christian Starkjohann
- * Creation Date: 2007-04-22
- * Tabsize: 4
- * Copyright: (c) 2007 by OBJECTIVE DEVELOPMENT Software GmbH
- * License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
- * Revision: $Id: usbdrvasm165.inc 740 2009-04-13 18:23:31Z cs $
- */
-
-/* Do not link this file! Link usbdrvasm.S instead, which includes the
- * appropriate implementation!
- */
-
-/*
-General Description:
-This file is the 16.5 MHz version of the USB driver. It is intended for the
-ATTiny45 and similar controllers running on 16.5 MHz internal RC oscillator.
-This version contains a phase locked loop in the receiver routine to cope with
-slight clock rate deviations of up to +/- 1%.
-
-See usbdrv.h for a description of the entire driver.
-
-Since almost all of this code is timing critical, don't change unless you
-really know what you are doing! Many parts require not only a maximum number
-of CPU cycles, but even an exact number of cycles!
-*/
-
-;Software-receiver engine. Strict timing! Don't change unless you can preserve timing!
-;interrupt response time: 4 cycles + insn running = 7 max if interrupts always enabled
-;max allowable interrupt latency: 59 cycles -> max 52 cycles interrupt disable
-;max stack usage: [ret(2), r0, SREG, YL, YH, shift, x1, x2, x3, x4, cnt] = 12 bytes
-;nominal frequency: 16.5 MHz -> 11 cycles per bit
-; 16.3125 MHz < F_CPU < 16.6875 MHz (+/- 1.1%)
-; Numbers in brackets are clocks counted from center of last sync bit
-; when instruction starts
-
-
-USB_INTR_VECTOR:
-;order of registers pushed: YL, SREG [sofError], r0, YH, shift, x1, x2, x3, x4, cnt
- push YL ;[-23] push only what is necessary to sync with edge ASAP
- in YL, SREG ;[-21]
- push YL ;[-20]
-;----------------------------------------------------------------------------
-; Synchronize with sync pattern:
-;----------------------------------------------------------------------------
-;sync byte (D-) pattern LSb to MSb: 01010100 [1 = idle = J, 0 = K]
-;sync up with J to K edge during sync pattern -- use fastest possible loops
-;The first part waits at most 1 bit long since we must be in sync pattern.
-;YL is guarenteed to be < 0x80 because I flag is clear. When we jump to
-;waitForJ, ensure that this prerequisite is met.
-waitForJ:
- inc YL
- sbis USBIN, USBMINUS
- brne waitForJ ; just make sure we have ANY timeout
-waitForK:
-;The following code results in a sampling window of < 1/4 bit which meets the spec.
- sbis USBIN, USBMINUS ;[-15]
- rjmp foundK ;[-14]
- sbis USBIN, USBMINUS
- rjmp foundK
- sbis USBIN, USBMINUS
- rjmp foundK
- sbis USBIN, USBMINUS
- rjmp foundK
- sbis USBIN, USBMINUS
- rjmp foundK
- sbis USBIN, USBMINUS
- rjmp foundK
-#if USB_COUNT_SOF
- lds YL, usbSofCount
- inc YL
- sts usbSofCount, YL
-#endif /* USB_COUNT_SOF */
-#ifdef USB_SOF_HOOK
- USB_SOF_HOOK
-#endif
- rjmp sofError
-foundK: ;[-12]
-;{3, 5} after falling D- edge, average delay: 4 cycles [we want 5 for center sampling]
-;we have 1 bit time for setup purposes, then sample again. Numbers in brackets
-;are cycles from center of first sync (double K) bit after the instruction
- push r0 ;[-12]
-; [---] ;[-11]
- push YH ;[-10]
-; [---] ;[-9]
- lds YL, usbInputBufOffset;[-8]
-; [---] ;[-7]
- clr YH ;[-6]
- subi YL, lo8(-(usbRxBuf));[-5] [rx loop init]
- sbci YH, hi8(-(usbRxBuf));[-4] [rx loop init]
- mov r0, x2 ;[-3] [rx loop init]
- sbis USBIN, USBMINUS ;[-2] we want two bits K (sample 2 cycles too early)
- rjmp haveTwoBitsK ;[-1]
- pop YH ;[0] undo the pushes from before
- pop r0 ;[2]
- rjmp waitForK ;[4] this was not the end of sync, retry
-; The entire loop from waitForK until rjmp waitForK above must not exceed two
-; bit times (= 22 cycles).
-
-;----------------------------------------------------------------------------
-; push more registers and initialize values while we sample the first bits:
-;----------------------------------------------------------------------------
-haveTwoBitsK: ;[1]
- push shift ;[1]
- push x1 ;[3]
- push x2 ;[5]
- push x3 ;[7]
- ldi shift, 0xff ;[9] [rx loop init]
- ori x3, 0xff ;[10] [rx loop init] == ser x3, clear zero flag
-
- in x1, USBIN ;[11] <-- sample bit 0
- bst x1, USBMINUS ;[12]
- bld shift, 0 ;[13]
- push x4 ;[14] == phase
-; [---] ;[15]
- push cnt ;[16]
-; [---] ;[17]
- ldi phase, 0 ;[18] [rx loop init]
- ldi cnt, USB_BUFSIZE;[19] [rx loop init]
- rjmp rxbit1 ;[20]
-; [---] ;[21]
-
-;----------------------------------------------------------------------------
-; Receiver loop (numbers in brackets are cycles within byte after instr)
-;----------------------------------------------------------------------------
-/*
-byte oriented operations done during loop:
-bit 0: store data
-bit 1: SE0 check
-bit 2: overflow check
-bit 3: catch up
-bit 4: rjmp to achieve conditional jump range
-bit 5: PLL
-bit 6: catch up
-bit 7: jump, fixup bitstuff
-; 87 [+ 2] cycles
-------------------------------------------------------------------
-*/
-continueWithBit5:
- in x2, USBIN ;[055] <-- bit 5
- eor r0, x2 ;[056]
- or phase, r0 ;[057]
- sbrc phase, USBMINUS ;[058]
- lpm ;[059] optional nop3; modifies r0
- in phase, USBIN ;[060] <-- phase
- eor x1, x2 ;[061]
- bst x1, USBMINUS ;[062]
- bld shift, 5 ;[063]
- andi shift, 0x3f ;[064]
- in x1, USBIN ;[065] <-- bit 6
- breq unstuff5 ;[066] *** unstuff escape
- eor phase, x1 ;[067]
- eor x2, x1 ;[068]
- bst x2, USBMINUS ;[069]
- bld shift, 6 ;[070]
-didUnstuff6: ;[ ]
- in r0, USBIN ;[071] <-- phase
- cpi shift, 0x02 ;[072]
- brlo unstuff6 ;[073] *** unstuff escape
-didUnstuff5: ;[ ]
- nop2 ;[074]
-; [---] ;[075]
- in x2, USBIN ;[076] <-- bit 7
- eor x1, x2 ;[077]
- bst x1, USBMINUS ;[078]
- bld shift, 7 ;[079]
-didUnstuff7: ;[ ]
- eor r0, x2 ;[080]
- or phase, r0 ;[081]
- in r0, USBIN ;[082] <-- phase
- cpi shift, 0x04 ;[083]
- brsh rxLoop ;[084]
-; [---] ;[085]
-unstuff7: ;[ ]
- andi x3, ~0x80 ;[085]
- ori shift, 0x80 ;[086]
- in x2, USBIN ;[087] <-- sample stuffed bit 7
- nop ;[088]
- rjmp didUnstuff7 ;[089]
-; [---] ;[090]
- ;[080]
-
-unstuff5: ;[067]
- eor phase, x1 ;[068]
- andi x3, ~0x20 ;[069]
- ori shift, 0x20 ;[070]
- in r0, USBIN ;[071] <-- phase
- mov x2, x1 ;[072]
- nop ;[073]
- nop2 ;[074]
-; [---] ;[075]
- in x1, USBIN ;[076] <-- bit 6
- eor r0, x1 ;[077]
- or phase, r0 ;[078]
- eor x2, x1 ;[079]
- bst x2, USBMINUS ;[080]
- bld shift, 6 ;[081] no need to check bitstuffing, we just had one
- in r0, USBIN ;[082] <-- phase
- rjmp didUnstuff5 ;[083]
-; [---] ;[084]
- ;[074]
-
-unstuff6: ;[074]
- andi x3, ~0x40 ;[075]
- in x1, USBIN ;[076] <-- bit 6 again
- ori shift, 0x40 ;[077]
- nop2 ;[078]
-; [---] ;[079]
- rjmp didUnstuff6 ;[080]
-; [---] ;[081]
- ;[071]
-
-unstuff0: ;[013]
- eor r0, x2 ;[014]
- or phase, r0 ;[015]
- andi x2, USBMASK ;[016] check for SE0
- in r0, USBIN ;[017] <-- phase
- breq didUnstuff0 ;[018] direct jump to se0 would be too long
- andi x3, ~0x01 ;[019]
- ori shift, 0x01 ;[020]
- mov x1, x2 ;[021] mov existing sample
- in x2, USBIN ;[022] <-- bit 1 again
- rjmp didUnstuff0 ;[023]
-; [---] ;[024]
- ;[014]
-
-unstuff1: ;[024]
- eor r0, x1 ;[025]
- or phase, r0 ;[026]
- andi x3, ~0x02 ;[027]
- in r0, USBIN ;[028] <-- phase
- ori shift, 0x02 ;[029]
- mov x2, x1 ;[030]
- rjmp didUnstuff1 ;[031]
-; [---] ;[032]
- ;[022]
-
-unstuff2: ;[035]
- eor r0, x2 ;[036]
- or phase, r0 ;[037]
- andi x3, ~0x04 ;[038]
- in r0, USBIN ;[039] <-- phase
- ori shift, 0x04 ;[040]
- mov x1, x2 ;[041]
- rjmp didUnstuff2 ;[042]
-; [---] ;[043]
- ;[033]
-
-unstuff3: ;[043]
- in x2, USBIN ;[044] <-- bit 3 again
- eor r0, x2 ;[045]
- or phase, r0 ;[046]
- andi x3, ~0x08 ;[047]
- ori shift, 0x08 ;[048]
- nop ;[049]
- in r0, USBIN ;[050] <-- phase
- rjmp didUnstuff3 ;[051]
-; [---] ;[052]
- ;[042]
-
-unstuff4: ;[053]
- andi x3, ~0x10 ;[054]
- in x1, USBIN ;[055] <-- bit 4 again
- ori shift, 0x10 ;[056]
- rjmp didUnstuff4 ;[057]
-; [---] ;[058]
- ;[048]
-
-rxLoop: ;[085]
- eor x3, shift ;[086] reconstruct: x3 is 0 at bit locations we changed, 1 at others
- in x1, USBIN ;[000] <-- bit 0
- st y+, x3 ;[001]
-; [---] ;[002]
- eor r0, x1 ;[003]
- or phase, r0 ;[004]
- eor x2, x1 ;[005]
- in r0, USBIN ;[006] <-- phase
- ser x3 ;[007]
- bst x2, USBMINUS ;[008]
- bld shift, 0 ;[009]
- andi shift, 0xf9 ;[010]
-rxbit1: ;[ ]
- in x2, USBIN ;[011] <-- bit 1
- breq unstuff0 ;[012] *** unstuff escape
- andi x2, USBMASK ;[013] SE0 check for bit 1
-didUnstuff0: ;[ ] Z only set if we detected SE0 in bitstuff
- breq se0 ;[014]
- eor r0, x2 ;[015]
- or phase, r0 ;[016]
- in r0, USBIN ;[017] <-- phase
- eor x1, x2 ;[018]
- bst x1, USBMINUS ;[019]
- bld shift, 1 ;[020]
- andi shift, 0xf3 ;[021]
-didUnstuff1: ;[ ]
- in x1, USBIN ;[022] <-- bit 2
- breq unstuff1 ;[023] *** unstuff escape
- eor r0, x1 ;[024]
- or phase, r0 ;[025]
- subi cnt, 1 ;[026] overflow check
- brcs overflow ;[027]
- in r0, USBIN ;[028] <-- phase
- eor x2, x1 ;[029]
- bst x2, USBMINUS ;[030]
- bld shift, 2 ;[031]
- andi shift, 0xe7 ;[032]
-didUnstuff2: ;[ ]
- in x2, USBIN ;[033] <-- bit 3
- breq unstuff2 ;[034] *** unstuff escape
- eor r0, x2 ;[035]
- or phase, r0 ;[036]
- eor x1, x2 ;[037]
- bst x1, USBMINUS ;[038]
- in r0, USBIN ;[039] <-- phase
- bld shift, 3 ;[040]
- andi shift, 0xcf ;[041]
-didUnstuff3: ;[ ]
- breq unstuff3 ;[042] *** unstuff escape
- nop ;[043]
- in x1, USBIN ;[044] <-- bit 4
- eor x2, x1 ;[045]
- bst x2, USBMINUS ;[046]
- bld shift, 4 ;[047]
-didUnstuff4: ;[ ]
- eor r0, x1 ;[048]
- or phase, r0 ;[049]
- in r0, USBIN ;[050] <-- phase
- andi shift, 0x9f ;[051]
- breq unstuff4 ;[052] *** unstuff escape
- rjmp continueWithBit5;[053]
-; [---] ;[054]
-
-macro POP_STANDARD ; 16 cycles
- pop cnt
- pop x4
- pop x3
- pop x2
- pop x1
- pop shift
- pop YH
- pop r0
- endm
-macro POP_RETI ; 5 cycles
- pop YL
- out SREG, YL
- pop YL
- endm
-
-#include "asmcommon.inc"
-
-
-; USB spec says:
-; idle = J
-; J = (D+ = 0), (D- = 1)
-; K = (D+ = 1), (D- = 0)
-; Spec allows 7.5 bit times from EOP to SOP for replies
-
-bitstuff7:
- eor x1, x4 ;[4]
- ldi x2, 0 ;[5]
- nop2 ;[6] C is zero (brcc)
- rjmp didStuff7 ;[8]
-
-bitstuffN:
- eor x1, x4 ;[5]
- ldi x2, 0 ;[6]
- lpm ;[7] 3 cycle NOP, modifies r0
- out USBOUT, x1 ;[10] <-- out
- rjmp didStuffN ;[0]
-
-#define bitStatus x3
-
-sendNakAndReti:
- ldi cnt, USBPID_NAK ;[-19]
- rjmp sendCntAndReti ;[-18]
-sendAckAndReti:
- ldi cnt, USBPID_ACK ;[-17]
-sendCntAndReti:
- mov r0, cnt ;[-16]
- ldi YL, 0 ;[-15] R0 address is 0
- ldi YH, 0 ;[-14]
- ldi cnt, 2 ;[-13]
-; rjmp usbSendAndReti fallthrough
-
-;usbSend:
-;pointer to data in 'Y'
-;number of bytes in 'cnt' -- including sync byte [range 2 ... 12]
-;uses: x1...x4, shift, cnt, Y
-;Numbers in brackets are time since first bit of sync pattern is sent
-usbSendAndReti: ; 12 cycles until SOP
- in x2, USBDDR ;[-12]
- ori x2, USBMASK ;[-11]
- sbi USBOUT, USBMINUS;[-10] prepare idle state; D+ and D- must have been 0 (no pullups)
- in x1, USBOUT ;[-8] port mirror for tx loop
- out USBDDR, x2 ;[-7] <- acquire bus
-; need not init x2 (bitstuff history) because sync starts with 0
- ldi x4, USBMASK ;[-6] exor mask
- ldi shift, 0x80 ;[-5] sync byte is first byte sent
- ldi bitStatus, 0xff ;[-4] init bit loop counter, works for up to 12 bytes
-byteloop:
-bitloop:
- sbrs shift, 0 ;[8] [-3]
- eor x1, x4 ;[9] [-2]
- out USBOUT, x1 ;[10] [-1] <-- out
- ror shift ;[0]
- ror x2 ;[1]
-didStuffN:
- cpi x2, 0xfc ;[2]
- brcc bitstuffN ;[3]
- nop ;[4]
- subi bitStatus, 37 ;[5] 256 / 7 ~=~ 37
- brcc bitloop ;[6] when we leave the loop, bitStatus has almost the initial value
- sbrs shift, 0 ;[7]
- eor x1, x4 ;[8]
- ror shift ;[9]
-didStuff7:
- out USBOUT, x1 ;[10] <-- out
- ror x2 ;[0]
- cpi x2, 0xfc ;[1]
- brcc bitstuff7 ;[2]
- ld shift, y+ ;[3]
- dec cnt ;[5]
- brne byteloop ;[6]
-;make SE0:
- cbr x1, USBMASK ;[7] prepare SE0 [spec says EOP may be 21 to 25 cycles]
- lds x2, usbNewDeviceAddr;[8]
- lsl x2 ;[10] we compare with left shifted address
- out USBOUT, x1 ;[11] <-- out SE0 -- from now 2 bits = 22 cycles until bus idle
-;2006-03-06: moved transfer of new address to usbDeviceAddr from C-Code to asm:
-;set address only after data packet was sent, not after handshake
- subi YL, 2 ;[0] Only assign address on data packets, not ACK/NAK in r0
- sbci YH, 0 ;[1]
- breq skipAddrAssign ;[2]
- sts usbDeviceAddr, x2; if not skipped: SE0 is one cycle longer
-skipAddrAssign:
-;end of usbDeviceAddress transfer
- ldi x2, 1<<USB_INTR_PENDING_BIT;[4] int0 occurred during TX -- clear pending flag
- USB_STORE_PENDING(x2) ;[5]
- ori x1, USBIDLE ;[6]
- in x2, USBDDR ;[7]
- cbr x2, USBMASK ;[8] set both pins to input
- mov x3, x1 ;[9]
- cbr x3, USBMASK ;[10] configure no pullup on both pins
- ldi x4, 4 ;[11]
-se0Delay:
- dec x4 ;[12] [15] [18] [21]
- brne se0Delay ;[13] [16] [19] [22]
- out USBOUT, x1 ;[23] <-- out J (idle) -- end of SE0 (EOP signal)
- out USBDDR, x2 ;[24] <-- release bus now
- out USBOUT, x3 ;[25] <-- ensure no pull-up resistors are active
- rjmp doReturn
-
+++ /dev/null
-/* Name: usbdrvasm18.inc
- * Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
- * Author: Lukas Schrittwieser (based on 20 MHz usbdrvasm20.inc by Jeroen Benschop)
- * Creation Date: 2009-01-20
- * Tabsize: 4
- * Copyright: (c) 2008 by Lukas Schrittwieser and OBJECTIVE DEVELOPMENT Software GmbH
- * License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
- * Revision: $Id: usbdrvasm18-crc.inc 740 2009-04-13 18:23:31Z cs $
- */
-
-/* Do not link this file! Link usbdrvasm.S instead, which includes the
- * appropriate implementation!
- */
-
-/*
-General Description:
-This file is the 18 MHz version of the asssembler part of the USB driver. It
-requires a 18 MHz crystal (not a ceramic resonator and not a calibrated RC
-oscillator).
-
-See usbdrv.h for a description of the entire driver.
-
-Since almost all of this code is timing critical, don't change unless you
-really know what you are doing! Many parts require not only a maximum number
-of CPU cycles, but even an exact number of cycles!
-*/
-
-
-;max stack usage: [ret(2), YL, SREG, YH, [sofError], bitcnt(x5), shift, x1, x2, x3, x4, cnt, ZL, ZH] = 14 bytes
-;nominal frequency: 18 MHz -> 12 cycles per bit
-; Numbers in brackets are clocks counted from center of last sync bit
-; when instruction starts
-;register use in receive loop to receive the data bytes:
-; shift assembles the byte currently being received
-; x1 holds the D+ and D- line state
-; x2 holds the previous line state
-; cnt holds the number of bytes left in the receive buffer
-; x3 holds the higher crc byte (see algorithm below)
-; x4 is used as temporary register for the crc algorithm
-; x5 is used for unstuffing: when unstuffing the last received bit is inverted in shift (to prevent further
-; unstuffing calls. In the same time the corresponding bit in x5 is cleared to mark the bit as beening iverted
-; zl lower crc value and crc table index
-; zh used for crc table accesses
-
-;--------------------------------------------------------------------------------------------------------------
-; CRC mods:
-; table driven crc checker, Z points to table in prog space
-; ZL is the lower crc byte, x3 is the higher crc byte
-; x4 is used as temp register to store different results
-; the initialization of the crc register is not 0xFFFF but 0xFE54. This is because during the receipt of the
-; first data byte an virtual zero data byte is added to the crc register, this results in the correct initial
-; value of 0xFFFF at beginning of the second data byte before the first data byte is added to the crc.
-; The magic number 0xFE54 results form the crc table: At tabH[0x54] = 0xFF = crcH (required) and
-; tabL[0x54] = 0x01 -> crcL = 0x01 xor 0xFE = 0xFF
-; bitcnt is renamed to x5 and is used for unstuffing purposes, the unstuffing works like in the 12MHz version
-;--------------------------------------------------------------------------------------------------------------
-; CRC algorithm:
-; The crc register is formed by x3 (higher byte) and ZL (lower byte). The algorithm uses a 'reversed' form
-; i.e. that it takes the least significant bit first and shifts to the right. So in fact the highest order
-; bit seen from the polynomial devision point of view is the lsb of ZL. (If this sounds strange to you i
-; propose a research on CRC :-) )
-; Each data byte received is xored to ZL, the lower crc byte. This byte now builds the crc
-; table index. Next the new high byte is loaded from the table and stored in x4 until we have space in x3
-; (its destination).
-; Afterwards the lower table is loaded from the table and stored in ZL (the old index is overwritten as
-; we don't need it anymore. In fact this is a right shift by 8 bits.) Now the old crc high value is xored
-; to ZL, this is the second shift of the old crc value. Now x4 (the temp reg) is moved to x3 and the crc
-; calculation is done.
-; Prior to the first byte the two CRC register have to be initialized to 0xFFFF (as defined in usb spec)
-; however the crc engine also runs during the receipt of the first byte, therefore x3 and zl are initialized
-; to a magic number which results in a crc value of 0xFFFF after the first complete byte.
-;
-; This algorithm is split into the extra cycles of the different bits:
-; bit7: XOR the received byte to ZL
-; bit5: load the new high byte to x4
-; bit6: load the lower xor byte from the table, xor zl and x3, store result in zl (=the new crc low value)
-; move x4 (the new high byte) to x3, the crc value is ready
-;
-
-
-macro POP_STANDARD ; 18 cycles
- pop ZH
- pop ZL
- pop cnt
- pop x5
- pop x3
- pop x2
- pop x1
- pop shift
- pop x4
- endm
-macro POP_RETI ; 7 cycles
- pop YH
- pop YL
- out SREG, YL
- pop YL
- endm
-
-macro CRC_CLEANUP_AND_CHECK
- ; the last byte has already been xored with the lower crc byte, we have to do the table lookup and xor
- ; x3 is the higher crc byte, zl the lower one
- ldi ZH, hi8(usbCrcTableHigh);[+1] get the new high byte from the table
- lpm x2, Z ;[+2][+3][+4]
- ldi ZH, hi8(usbCrcTableLow);[+5] get the new low xor byte from the table
- lpm ZL, Z ;[+6][+7][+8]
- eor ZL, x3 ;[+7] xor the old high byte with the value from the table, x2:ZL now holds the crc value
- cpi ZL, 0x01 ;[+8] if the crc is ok we have a fixed remainder value of 0xb001 in x2:ZL (see usb spec)
- brne ignorePacket ;[+9] detected a crc fault -> paket is ignored and retransmitted by the host
- cpi x2, 0xb0 ;[+10]
- brne ignorePacket ;[+11] detected a crc fault -> paket is ignored and retransmitted by the host
- endm
-
-
-USB_INTR_VECTOR:
-;order of registers pushed: YL, SREG, YH, [sofError], x4, shift, x1, x2, x3, x5, cnt, ZL, ZH
- push YL ;[-28] push only what is necessary to sync with edge ASAP
- in YL, SREG ;[-26]
- push YL ;[-25]
- push YH ;[-23]
-;----------------------------------------------------------------------------
-; Synchronize with sync pattern:
-;----------------------------------------------------------------------------
-;sync byte (D-) pattern LSb to MSb: 01010100 [1 = idle = J, 0 = K]
-;sync up with J to K edge during sync pattern -- use fastest possible loops
-;The first part waits at most 1 bit long since we must be in sync pattern.
-;YL is guarenteed to be < 0x80 because I flag is clear. When we jump to
-;waitForJ, ensure that this prerequisite is met.
-waitForJ:
- inc YL
- sbis USBIN, USBMINUS
- brne waitForJ ; just make sure we have ANY timeout
-waitForK:
-;The following code results in a sampling window of < 1/4 bit which meets the spec.
- sbis USBIN, USBMINUS ;[-17]
- rjmp foundK ;[-16]
- sbis USBIN, USBMINUS
- rjmp foundK
- sbis USBIN, USBMINUS
- rjmp foundK
- sbis USBIN, USBMINUS
- rjmp foundK
- sbis USBIN, USBMINUS
- rjmp foundK
- sbis USBIN, USBMINUS
- rjmp foundK
- sbis USBIN, USBMINUS
- rjmp foundK
- sbis USBIN, USBMINUS
- rjmp foundK
- sbis USBIN, USBMINUS
- rjmp foundK
-#if USB_COUNT_SOF
- lds YL, usbSofCount
- inc YL
- sts usbSofCount, YL
-#endif /* USB_COUNT_SOF */
-#ifdef USB_SOF_HOOK
- USB_SOF_HOOK
-#endif
- rjmp sofError
-foundK: ;[-15]
-;{3, 5} after falling D- edge, average delay: 4 cycles
-;bit0 should be at 30 (2.5 bits) for center sampling. Currently at 4 so 26 cylces till bit 0 sample
-;use 1 bit time for setup purposes, then sample again. Numbers in brackets
-;are cycles from center of first sync (double K) bit after the instruction
- push x4 ;[-14]
-; [---] ;[-13]
- lds YL, usbInputBufOffset;[-12] used to toggle the two usb receive buffers
-; [---] ;[-11]
- clr YH ;[-10]
- subi YL, lo8(-(usbRxBuf));[-9] [rx loop init]
- sbci YH, hi8(-(usbRxBuf));[-8] [rx loop init]
- push shift ;[-7]
-; [---] ;[-6]
- ldi shift, 0x80 ;[-5] the last bit is the end of byte marker for the pid receiver loop
- clc ;[-4] the carry has to be clear for receipt of pid bit 0
- sbis USBIN, USBMINUS ;[-3] we want two bits K (sample 3 cycles too early)
- rjmp haveTwoBitsK ;[-2]
- pop shift ;[-1] undo the push from before
- pop x4 ;[1]
- rjmp waitForK ;[3] this was not the end of sync, retry
-; The entire loop from waitForK until rjmp waitForK above must not exceed two
-; bit times (= 24 cycles).
-
-;----------------------------------------------------------------------------
-; push more registers and initialize values while we sample the first bits:
-;----------------------------------------------------------------------------
-haveTwoBitsK:
- push x1 ;[0]
- push x2 ;[2]
- push x3 ;[4] crc high byte
- ldi x2, 1<<USBPLUS ;[6] [rx loop init] current line state is K state. D+=="1", D-=="0"
- push x5 ;[7]
- push cnt ;[9]
- ldi cnt, USB_BUFSIZE ;[11]
-
-
-;--------------------------------------------------------------------------------------------------------------
-; receives the pid byte
-; there is no real unstuffing algorithm implemented here as a stuffing bit is impossible in the pid byte.
-; That's because the last four bits of the byte are the inverted of the first four bits. If we detect a
-; unstuffing condition something went wrong and abort
-; shift has to be initialized to 0x80
-;--------------------------------------------------------------------------------------------------------------
-
-; pid bit 0 - used for even more register saving (we need the z pointer)
- in x1, USBIN ;[0] sample line state
- andi x1, USBMASK ;[1] filter only D+ and D- bits
- eor x2, x1 ;[2] generate inverted of actual bit
- sbrc x2, USBMINUS ;[3] if the bit is set we received a zero
- sec ;[4]
- ror shift ;[5] we perform no unstuffing check here as this is the first bit
- mov x2, x1 ;[6]
- push ZL ;[7]
- ;[8]
- push ZH ;[9]
- ;[10]
- ldi x3, 0xFE ;[11] x3 is the high order crc value
-
-
-bitloopPid:
- in x1, USBIN ;[0] sample line state
- andi x1, USBMASK ;[1] filter only D+ and D- bits
- breq nse0 ;[2] both lines are low so handle se0
- eor x2, x1 ;[3] generate inverted of actual bit
- sbrc x2, USBMINUS ;[4] set the carry if we received a zero
- sec ;[5]
- ror shift ;[6]
- ldi ZL, 0x54 ;[7] ZL is the low order crc value
- ser x4 ;[8] the is no bit stuffing check here as the pid bit can't be stuffed. if so
- ; some error occured. In this case the paket is discarded later on anyway.
- mov x2, x1 ;[9] prepare for the next cycle
- brcc bitloopPid ;[10] while 0s drop out of shift we get the next bit
- eor x4, shift ;[11] invert all bits in shift and store result in x4
-
-;--------------------------------------------------------------------------------------------------------------
-; receives data bytes and calculates the crc
-; the last USBIN state has to be in x2
-; this is only the first half, due to branch distanc limitations the second half of the loop is near the end
-; of this asm file
-;--------------------------------------------------------------------------------------------------------------
-
-rxDataStart:
- in x1, USBIN ;[0] sample line state (note: a se0 check is not useful due to bit dribbling)
- ser x5 ;[1] prepare the unstuff marker register
- eor x2, x1 ;[2] generates the inverted of the actual bit
- bst x2, USBMINUS ;[3] copy the bit from x2
- bld shift, 0 ;[4] and store it in shift
- mov x2, shift ;[5] make a copy of shift for unstuffing check
- andi x2, 0xF9 ;[6] mask the last six bits, if we got six zeros (which are six ones in fact)
- breq unstuff0 ;[7] then Z is set now and we branch to the unstuffing handler
-didunstuff0:
- subi cnt, 1 ;[8] cannot use dec because it doesn't affect the carry flag
- brcs nOverflow ;[9] Too many bytes received. Ignore packet
- st Y+, x4 ;[10] store the last received byte
- ;[11] st needs two cycles
-
-; bit1
- in x2, USBIN ;[0] sample line state
- andi x1, USBMASK ;[1] check for se0 during bit 0
- breq nse0 ;[2]
- andi x2, USBMASK ;[3] check se0 during bit 1
- breq nse0 ;[4]
- eor x1, x2 ;[5]
- bst x1, USBMINUS ;[6]
- bld shift, 1 ;[7]
- mov x1, shift ;[8]
- andi x1, 0xF3 ;[9]
- breq unstuff1 ;[10]
-didunstuff1:
- nop ;[11]
-
-; bit2
- in x1, USBIN ;[0] sample line state
- andi x1, USBMASK ;[1] check for se0 (as there is nothing else to do here
- breq nOverflow ;[2]
- eor x2, x1 ;[3] generates the inverted of the actual bit
- bst x2, USBMINUS ;[4]
- bld shift, 2 ;[5] store the bit
- mov x2, shift ;[6]
- andi x2, 0xE7 ;[7] if we have six zeros here (which means six 1 in the stream)
- breq unstuff2 ;[8] the next bit is a stuffing bit
-didunstuff2:
- nop2 ;[9]
- ;[10]
- nop ;[11]
-
-; bit3
- in x2, USBIN ;[0] sample line state
- andi x2, USBMASK ;[1] check for se0
- breq nOverflow ;[2]
- eor x1, x2 ;[3]
- bst x1, USBMINUS ;[4]
- bld shift, 3 ;[5]
- mov x1, shift ;[6]
- andi x1, 0xCF ;[7]
- breq unstuff3 ;[8]
-didunstuff3:
- nop ;[9]
- rjmp rxDataBit4 ;[10]
- ;[11]
-
-; the avr branch instructions allow an offset of +63 insturction only, so we need this
-; 'local copy' of se0
-nse0:
- rjmp se0 ;[4]
- ;[5]
-; the same same as for se0 is needed for overflow and StuffErr
-nOverflow:
-stuffErr:
- rjmp overflow
-
-
-unstuff0: ;[8] this is the branch delay of breq unstuffX
- andi x1, USBMASK ;[9] do an se0 check here (if the last crc byte ends with 5 one's we might end up here
- breq didunstuff0 ;[10] event tough the message is complete -> jump back and store the byte
- ori shift, 0x01 ;[11] invert the last received bit to prevent furhter unstuffing
- in x2, USBIN ;[0] we have some free cycles so we could check for bit stuffing errors
- andi x5, 0xFE ;[1] mark this bit as inverted (will be corrected before storing shift)
- eor x1, x2 ;[2] x1 and x2 have to be different because the stuff bit is always a zero
- andi x1, USBMASK ;[3] mask the interesting bits
- breq stuffErr ;[4] if the stuff bit is a 1-bit something went wrong
- mov x1, x2 ;[5] the next bit expects the last state to be in x1
- rjmp didunstuff0 ;[6]
- ;[7] jump delay of rjmp didunstuffX
-
-unstuff1: ;[11] this is the jump delay of breq unstuffX
- in x1, USBIN ;[0] we have some free cycles so we could check for bit stuffing errors
- ori shift, 0x02 ;[1] invert the last received bit to prevent furhter unstuffing
- andi x5, 0xFD ;[2] mark this bit as inverted (will be corrected before storing shift)
- eor x2, x1 ;[3] x1 and x2 have to be different because the stuff bit is always a zero
- andi x2, USBMASK ;[4] mask the interesting bits
- breq stuffErr ;[5] if the stuff bit is a 1-bit something went wrong
- mov x2, x1 ;[6] the next bit expects the last state to be in x2
- nop2 ;[7]
- ;[8]
- rjmp didunstuff1 ;[9]
- ;[10] jump delay of rjmp didunstuffX
-
-unstuff2: ;[9] this is the jump delay of breq unstuffX
- ori shift, 0x04 ;[10] invert the last received bit to prevent furhter unstuffing
- andi x5, 0xFB ;[11] mark this bit as inverted (will be corrected before storing shift)
- in x2, USBIN ;[0] we have some free cycles so we could check for bit stuffing errors
- eor x1, x2 ;[1] x1 and x2 have to be different because the stuff bit is always a zero
- andi x1, USBMASK ;[2] mask the interesting bits
- breq stuffErr ;[3] if the stuff bit is a 1-bit something went wrong
- mov x1, x2 ;[4] the next bit expects the last state to be in x1
- nop2 ;[5]
- ;[6]
- rjmp didunstuff2 ;[7]
- ;[8] jump delay of rjmp didunstuffX
-
-unstuff3: ;[9] this is the jump delay of breq unstuffX
- ori shift, 0x08 ;[10] invert the last received bit to prevent furhter unstuffing
- andi x5, 0xF7 ;[11] mark this bit as inverted (will be corrected before storing shift)
- in x1, USBIN ;[0] we have some free cycles so we could check for bit stuffing errors
- eor x2, x1 ;[1] x1 and x2 have to be different because the stuff bit is always a zero
- andi x2, USBMASK ;[2] mask the interesting bits
- breq stuffErr ;[3] if the stuff bit is a 1-bit something went wrong
- mov x2, x1 ;[4] the next bit expects the last state to be in x2
- nop2 ;[5]
- ;[6]
- rjmp didunstuff3 ;[7]
- ;[8] jump delay of rjmp didunstuffX
-
-
-
-; the include has to be here due to branch distance restirctions
-#define __USE_CRC__
-#include "asmcommon.inc"
-
-
-
-; USB spec says:
-; idle = J
-; J = (D+ = 0), (D- = 1)
-; K = (D+ = 1), (D- = 0)
-; Spec allows 7.5 bit times from EOP to SOP for replies
-; 7.5 bit times is 90 cycles. ...there is plenty of time
-
-
-sendNakAndReti:
- ldi x3, USBPID_NAK ;[-18]
- rjmp sendX3AndReti ;[-17]
-sendAckAndReti:
- ldi cnt, USBPID_ACK ;[-17]
-sendCntAndReti:
- mov x3, cnt ;[-16]
-sendX3AndReti:
- ldi YL, 20 ;[-15] x3==r20 address is 20
- ldi YH, 0 ;[-14]
- ldi cnt, 2 ;[-13]
-; rjmp usbSendAndReti fallthrough
-
-;usbSend:
-;pointer to data in 'Y'
-;number of bytes in 'cnt' -- including sync byte [range 2 ... 12]
-;uses: x1...x4, btcnt, shift, cnt, Y
-;Numbers in brackets are time since first bit of sync pattern is sent
-
-usbSendAndReti: ; 12 cycles until SOP
- in x2, USBDDR ;[-12]
- ori x2, USBMASK ;[-11]
- sbi USBOUT, USBMINUS;[-10] prepare idle state; D+ and D- must have been 0 (no pullups)
- in x1, USBOUT ;[-8] port mirror for tx loop
- out USBDDR, x2 ;[-6] <- acquire bus
- ldi x2, 0 ;[-6] init x2 (bitstuff history) because sync starts with 0
- ldi x4, USBMASK ;[-5] exor mask
- ldi shift, 0x80 ;[-4] sync byte is first byte sent
-txByteLoop:
- ldi bitcnt, 0x40 ;[-3]=[9] binary 01000000
-txBitLoop: ; the loop sends the first 7 bits of the byte
- sbrs shift, 0 ;[-2]=[10] if we have to send a 1 don't change the line state
- eor x1, x4 ;[-1]=[11]
- out USBOUT, x1 ;[0]
- ror shift ;[1]
- ror x2 ;[2] transfers the last sent bit to the stuffing history
-didStuffN:
- nop ;[3]
- nop ;[4]
- cpi x2, 0xfc ;[5] if we sent six consecutive ones
- brcc bitstuffN ;[6]
- lsr bitcnt ;[7]
- brne txBitLoop ;[8] restart the loop while the 1 is still in the bitcount
-
-; transmit bit 7
- sbrs shift, 0 ;[9]
- eor x1, x4 ;[10]
-didStuff7:
- ror shift ;[11]
- out USBOUT, x1 ;[0] transfer bit 7 to the pins
- ror x2 ;[1] move the bit into the stuffing history
- cpi x2, 0xfc ;[2]
- brcc bitstuff7 ;[3]
- ld shift, y+ ;[4] get next byte to transmit
- dec cnt ;[5] decrement byte counter
- brne txByteLoop ;[7] if we have more bytes start next one
- ;[8] branch delay
-
-;make SE0:
- cbr x1, USBMASK ;[8] prepare SE0 [spec says EOP may be 25 to 30 cycles]
- lds x2, usbNewDeviceAddr;[9]
- lsl x2 ;[11] we compare with left shifted address
- out USBOUT, x1 ;[0] <-- out SE0 -- from now 2 bits = 24 cycles until bus idle
- subi YL, 20 + 2 ;[1] Only assign address on data packets, not ACK/NAK in x3
- sbci YH, 0 ;[2]
-;2006-03-06: moved transfer of new address to usbDeviceAddr from C-Code to asm:
-;set address only after data packet was sent, not after handshake
- breq skipAddrAssign ;[3]
- sts usbDeviceAddr, x2 ; if not skipped: SE0 is one cycle longer
-skipAddrAssign:
-;end of usbDeviceAddress transfer
- ldi x2, 1<<USB_INTR_PENDING_BIT;[5] int0 occurred during TX -- clear pending flag
- USB_STORE_PENDING(x2) ;[6]
- ori x1, USBIDLE ;[7]
- in x2, USBDDR ;[8]
- cbr x2, USBMASK ;[9] set both pins to input
- mov x3, x1 ;[10]
- cbr x3, USBMASK ;[11] configure no pullup on both pins
- ldi x4, 4 ;[12]
-se0Delay:
- dec x4 ;[13] [16] [19] [22]
- brne se0Delay ;[14] [17] [20] [23]
- out USBOUT, x1 ;[24] <-- out J (idle) -- end of SE0 (EOP signal)
- out USBDDR, x2 ;[25] <-- release bus now
- out USBOUT, x3 ;[26] <-- ensure no pull-up resistors are active
- rjmp doReturn
-
-bitstuffN:
- eor x1, x4 ;[8] generate a zero
- ldi x2, 0 ;[9] reset the bit stuffing history
- nop2 ;[10]
- out USBOUT, x1 ;[0] <-- send the stuffing bit
- rjmp didStuffN ;[1]
-
-bitstuff7:
- eor x1, x4 ;[5]
- ldi x2, 0 ;[6] reset bit stuffing history
- clc ;[7] fill a zero into the shift register
- rol shift ;[8] compensate for ror shift at branch destination
- rjmp didStuff7 ;[9]
- ;[10] jump delay
-
-;--------------------------------------------------------------------------------------------------------------
-; receives data bytes and calculates the crc
-; second half of the data byte receiver loop
-; most parts of the crc algorithm are here
-;--------------------------------------------------------------------------------------------------------------
-
-nOverflow2:
- rjmp overflow
-
-rxDataBit4:
- in x1, USBIN ;[0] sample line state
- andi x1, USBMASK ;[1] check for se0
- breq nOverflow2 ;[2]
- eor x2, x1 ;[3]
- bst x2, USBMINUS ;[4]
- bld shift, 4 ;[5]
- mov x2, shift ;[6]
- andi x2, 0x9F ;[7]
- breq unstuff4 ;[8]
-didunstuff4:
- nop2 ;[9][10]
- nop ;[11]
-
-; bit5
- in x2, USBIN ;[0] sample line state
- ldi ZH, hi8(usbCrcTableHigh);[1] use the table for the higher byte
- eor x1, x2 ;[2]
- bst x1, USBMINUS ;[3]
- bld shift, 5 ;[4]
- mov x1, shift ;[5]
- andi x1, 0x3F ;[6]
- breq unstuff5 ;[7]
-didunstuff5:
- lpm x4, Z ;[8] load the higher crc xor-byte and store it for later use
- ;[9] lpm needs 3 cycles
- ;[10]
- ldi ZH, hi8(usbCrcTableLow);[11] load the lower crc xor byte adress
-
-; bit6
- in x1, USBIN ;[0] sample line state
- eor x2, x1 ;[1]
- bst x2, USBMINUS ;[2]
- bld shift, 6 ;[3]
- mov x2, shift ;[4]
- andi x2, 0x7E ;[5]
- breq unstuff6 ;[6]
-didunstuff6:
- lpm ZL, Z ;[7] load the lower xor crc byte
- ;[8] lpm needs 3 cycles
- ;[9]
- eor ZL, x3 ;[10] xor the old high crc byte with the low xor-byte
- mov x3, x4 ;[11] move the new high order crc value from temp to its destination
-
-; bit7
- in x2, USBIN ;[0] sample line state
- eor x1, x2 ;[1]
- bst x1, USBMINUS ;[2]
- bld shift, 7 ;[3] now shift holds the complete but inverted data byte
- mov x1, shift ;[4]
- andi x1, 0xFC ;[5]
- breq unstuff7 ;[6]
-didunstuff7:
- eor x5, shift ;[7] x5 marks all bits which have not been inverted by the unstuffing subs
- mov x4, x5 ;[8] keep a copy of the data byte it will be stored during next bit0
- eor ZL, x4 ;[9] feed the actual byte into the crc algorithm
- rjmp rxDataStart ;[10] next byte
- ;[11] during the reception of the next byte this one will be fed int the crc algorithm
-
-unstuff4: ;[9] this is the jump delay of rjmp unstuffX
- ori shift, 0x10 ;[10] invert the last received bit to prevent furhter unstuffing
- andi x5, 0xEF ;[11] mark this bit as inverted (will be corrected before storing shift)
- in x2, USBIN ;[0] we have some free cycles so we could check for bit stuffing errors
- eor x1, x2 ;[1] x1 and x2 have to be different because the stuff bit is always a zero
- andi x1, USBMASK ;[2] mask the interesting bits
- breq stuffErr2 ;[3] if the stuff bit is a 1-bit something went wrong
- mov x1, x2 ;[4] the next bit expects the last state to be in x1
- nop2 ;[5]
- ;[6]
- rjmp didunstuff4 ;[7]
- ;[8] jump delay of rjmp didunstuffX
-
-unstuff5: ;[8] this is the jump delay of rjmp unstuffX
- nop ;[9]
- ori shift, 0x20 ;[10] invert the last received bit to prevent furhter unstuffing
- andi x5, 0xDF ;[11] mark this bit as inverted (will be corrected before storing shift)
- in x1, USBIN ;[0] we have some free cycles so we could check for bit stuffing errors
- eor x2, x1 ;[1] x1 and x2 have to be different because the stuff bit is always a zero
- andi x2, USBMASK ;[2] mask the interesting bits
- breq stuffErr2 ;[3] if the stuff bit is a 1-bit something went wrong
- mov x2, x1 ;[4] the next bit expects the last state to be in x2
- nop ;[5]
- rjmp didunstuff5 ;[6]
- ;[7] jump delay of rjmp didunstuffX
-
-unstuff6: ;[7] this is the jump delay of rjmp unstuffX
- nop2 ;[8]
- ;[9]
- ori shift, 0x40 ;[10] invert the last received bit to prevent furhter unstuffing
- andi x5, 0xBF ;[11] mark this bit as inverted (will be corrected before storing shift)
- in x2, USBIN ;[0] we have some free cycles so we could check for bit stuffing errors
- eor x1, x2 ;[1] x1 and x2 have to be different because the stuff bit is always a zero
- andi x1, USBMASK ;[2] mask the interesting bits
- breq stuffErr2 ;[3] if the stuff bit is a 1-bit something went wrong
- mov x1, x2 ;[4] the next bit expects the last state to be in x1
- rjmp didunstuff6 ;[5]
- ;[6] jump delay of rjmp didunstuffX
-
-unstuff7: ;[7] this is the jump delay of rjmp unstuffX
- nop ;[8]
- nop ;[9]
- ori shift, 0x80 ;[10] invert the last received bit to prevent furhter unstuffing
- andi x5, 0x7F ;[11] mark this bit as inverted (will be corrected before storing shift)
- in x1, USBIN ;[0] we have some free cycles so we could check for bit stuffing errors
- eor x2, x1 ;[1] x1 and x2 have to be different because the stuff bit is always a zero
- andi x2, USBMASK ;[2] mask the interesting bits
- breq stuffErr2 ;[3] if the stuff bit is a 1-bit something went wrong
- mov x2, x1 ;[4] the next bit expects the last state to be in x2
- rjmp didunstuff7 ;[5]
- ;[6] jump delay of rjmp didunstuff7
-
-; local copy of the stuffErr desitnation for the second half of the receiver loop
-stuffErr2:
- rjmp stuffErr
-
-;--------------------------------------------------------------------------------------------------------------
-; The crc table follows. It has to be aligned to enable a fast loading of the needed bytes.
-; There are two tables of 256 entries each, the low and the high byte table.
-; Table values were generated with the following C code:
-/*
-#include <stdio.h>
-int main (int argc, char **argv)
-{
- int i, j;
- for (i=0; i<512; i++){
- unsigned short crc = i & 0xff;
- for(j=0; j<8; j++) crc = (crc >> 1) ^ ((crc & 1) ? 0xa001 : 0);
- if((i & 7) == 0) printf("\n.byte ");
- printf("0x%02x, ", (i > 0xff ? (crc >> 8) : crc) & 0xff);
- if(i == 255) printf("\n");
- }
- return 0;
-}
-
-// Use the following algorithm to compute CRC values:
-ushort computeCrc(uchar *msg, uchar msgLen)
-{
- uchar i;
- ushort crc = 0xffff;
- for(i = 0; i < msgLen; i++)
- crc = usbCrcTable16[lo8(crc) ^ msg[i]] ^ hi8(crc);
- return crc;
-}
-*/
-
-.balign 256
-usbCrcTableLow:
-.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
-.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
-.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
-.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
-.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
-.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
-.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
-.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
-.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
-.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
-.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
-.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
-.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
-.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
-.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
-.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
-.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
-.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
-.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
-.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
-.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
-.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
-.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
-.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
-.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
-.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
-.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
-.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
-.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
-.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
-.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
-.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
-
-; .balign 256
-usbCrcTableHigh:
-.byte 0x00, 0xC0, 0xC1, 0x01, 0xC3, 0x03, 0x02, 0xC2
-.byte 0xC6, 0x06, 0x07, 0xC7, 0x05, 0xC5, 0xC4, 0x04
-.byte 0xCC, 0x0C, 0x0D, 0xCD, 0x0F, 0xCF, 0xCE, 0x0E
-.byte 0x0A, 0xCA, 0xCB, 0x0B, 0xC9, 0x09, 0x08, 0xC8
-.byte 0xD8, 0x18, 0x19, 0xD9, 0x1B, 0xDB, 0xDA, 0x1A
-.byte 0x1E, 0xDE, 0xDF, 0x1F, 0xDD, 0x1D, 0x1C, 0xDC
-.byte 0x14, 0xD4, 0xD5, 0x15, 0xD7, 0x17, 0x16, 0xD6
-.byte 0xD2, 0x12, 0x13, 0xD3, 0x11, 0xD1, 0xD0, 0x10
-.byte 0xF0, 0x30, 0x31, 0xF1, 0x33, 0xF3, 0xF2, 0x32
-.byte 0x36, 0xF6, 0xF7, 0x37, 0xF5, 0x35, 0x34, 0xF4
-.byte 0x3C, 0xFC, 0xFD, 0x3D, 0xFF, 0x3F, 0x3E, 0xFE
-.byte 0xFA, 0x3A, 0x3B, 0xFB, 0x39, 0xF9, 0xF8, 0x38
-.byte 0x28, 0xE8, 0xE9, 0x29, 0xEB, 0x2B, 0x2A, 0xEA
-.byte 0xEE, 0x2E, 0x2F, 0xEF, 0x2D, 0xED, 0xEC, 0x2C
-.byte 0xE4, 0x24, 0x25, 0xE5, 0x27, 0xE7, 0xE6, 0x26
-.byte 0x22, 0xE2, 0xE3, 0x23, 0xE1, 0x21, 0x20, 0xE0
-.byte 0xA0, 0x60, 0x61, 0xA1, 0x63, 0xA3, 0xA2, 0x62
-.byte 0x66, 0xA6, 0xA7, 0x67, 0xA5, 0x65, 0x64, 0xA4
-.byte 0x6C, 0xAC, 0xAD, 0x6D, 0xAF, 0x6F, 0x6E, 0xAE
-.byte 0xAA, 0x6A, 0x6B, 0xAB, 0x69, 0xA9, 0xA8, 0x68
-.byte 0x78, 0xB8, 0xB9, 0x79, 0xBB, 0x7B, 0x7A, 0xBA
-.byte 0xBE, 0x7E, 0x7F, 0xBF, 0x7D, 0xBD, 0xBC, 0x7C
-.byte 0xB4, 0x74, 0x75, 0xB5, 0x77, 0xB7, 0xB6, 0x76
-.byte 0x72, 0xB2, 0xB3, 0x73, 0xB1, 0x71, 0x70, 0xB0
-.byte 0x50, 0x90, 0x91, 0x51, 0x93, 0x53, 0x52, 0x92
-.byte 0x96, 0x56, 0x57, 0x97, 0x55, 0x95, 0x94, 0x54
-.byte 0x9C, 0x5C, 0x5D, 0x9D, 0x5F, 0x9F, 0x9E, 0x5E
-.byte 0x5A, 0x9A, 0x9B, 0x5B, 0x99, 0x59, 0x58, 0x98
-.byte 0x88, 0x48, 0x49, 0x89, 0x4B, 0x8B, 0x8A, 0x4A
-.byte 0x4E, 0x8E, 0x8F, 0x4F, 0x8D, 0x4D, 0x4C, 0x8C
-.byte 0x44, 0x84, 0x85, 0x45, 0x87, 0x47, 0x46, 0x86
-.byte 0x82, 0x42, 0x43, 0x83, 0x41, 0x81, 0x80, 0x40
-
+++ /dev/null
-/* Name: usbdrvasm20.inc
- * Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
- * Author: Jeroen Benschop
- * Based on usbdrvasm16.inc from Christian Starkjohann
- * Creation Date: 2008-03-05
- * Tabsize: 4
- * Copyright: (c) 2008 by Jeroen Benschop and OBJECTIVE DEVELOPMENT Software GmbH
- * License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
- * Revision: $Id: usbdrvasm20.inc 740 2009-04-13 18:23:31Z cs $
- */
-
-/* Do not link this file! Link usbdrvasm.S instead, which includes the
- * appropriate implementation!
- */
-
-/*
-General Description:
-This file is the 20 MHz version of the asssembler part of the USB driver. It
-requires a 20 MHz crystal (not a ceramic resonator and not a calibrated RC
-oscillator).
-
-See usbdrv.h for a description of the entire driver.
-
-Since almost all of this code is timing critical, don't change unless you
-really know what you are doing! Many parts require not only a maximum number
-of CPU cycles, but even an exact number of cycles!
-*/
-
-#define leap2 x3
-#ifdef __IAR_SYSTEMS_ASM__
-#define nextInst $+2
-#else
-#define nextInst .+0
-#endif
-
-;max stack usage: [ret(2), YL, SREG, YH, bitcnt, shift, x1, x2, x3, x4, cnt] = 12 bytes
-;nominal frequency: 20 MHz -> 13.333333 cycles per bit, 106.666667 cycles per byte
-; Numbers in brackets are clocks counted from center of last sync bit
-; when instruction starts
-;register use in receive loop:
-; shift assembles the byte currently being received
-; x1 holds the D+ and D- line state
-; x2 holds the previous line state
-; x4 (leap) is used to add a leap cycle once every three bytes received
-; X3 (leap2) is used to add a leap cycle once every three stuff bits received
-; bitcnt is used to determine when a stuff bit is due
-; cnt holds the number of bytes left in the receive buffer
-
-USB_INTR_VECTOR:
-;order of registers pushed: YL, SREG YH, [sofError], bitcnt, shift, x1, x2, x3, x4, cnt
- push YL ;[-28] push only what is necessary to sync with edge ASAP
- in YL, SREG ;[-26]
- push YL ;[-25]
- push YH ;[-23]
-;----------------------------------------------------------------------------
-; Synchronize with sync pattern:
-;----------------------------------------------------------------------------
-;sync byte (D-) pattern LSb to MSb: 01010100 [1 = idle = J, 0 = K]
-;sync up with J to K edge during sync pattern -- use fastest possible loops
-;The first part waits at most 1 bit long since we must be in sync pattern.
-;YL is guarenteed to be < 0x80 because I flag is clear. When we jump to
-;waitForJ, ensure that this prerequisite is met.
-waitForJ:
- inc YL
- sbis USBIN, USBMINUS
- brne waitForJ ; just make sure we have ANY timeout
-waitForK:
-;The following code results in a sampling window of < 1/4 bit which meets the spec.
- sbis USBIN, USBMINUS ;[-19]
- rjmp foundK ;[-18]
- sbis USBIN, USBMINUS
- rjmp foundK
- sbis USBIN, USBMINUS
- rjmp foundK
- sbis USBIN, USBMINUS
- rjmp foundK
- sbis USBIN, USBMINUS
- rjmp foundK
- sbis USBIN, USBMINUS
- rjmp foundK
- sbis USBIN, USBMINUS
- rjmp foundK
- sbis USBIN, USBMINUS
- rjmp foundK
- sbis USBIN, USBMINUS
- rjmp foundK
-#if USB_COUNT_SOF
- lds YL, usbSofCount
- inc YL
- sts usbSofCount, YL
-#endif /* USB_COUNT_SOF */
-#ifdef USB_SOF_HOOK
- USB_SOF_HOOK
-#endif
- rjmp sofError
-foundK: ;[-16]
-;{3, 5} after falling D- edge, average delay: 4 cycles
-;bit0 should be at 34 for center sampling. Currently at 4 so 30 cylces till bit 0 sample
-;use 1 bit time for setup purposes, then sample again. Numbers in brackets
-;are cycles from center of first sync (double K) bit after the instruction
- push bitcnt ;[-16]
-; [---] ;[-15]
- lds YL, usbInputBufOffset;[-14]
-; [---] ;[-13]
- clr YH ;[-12]
- subi YL, lo8(-(usbRxBuf));[-11] [rx loop init]
- sbci YH, hi8(-(usbRxBuf));[-10] [rx loop init]
- push shift ;[-9]
-; [---] ;[-8]
- ldi shift,0x40 ;[-7] set msb to "1" so processing bit7 can be detected
- nop2 ;[-6]
-; [---] ;[-5]
- ldi bitcnt, 5 ;[-4] [rx loop init]
- sbis USBIN, USBMINUS ;[-3] we want two bits K (sample 3 cycles too early)
- rjmp haveTwoBitsK ;[-2]
- pop shift ;[-1] undo the push from before
- pop bitcnt ;[1]
- rjmp waitForK ;[3] this was not the end of sync, retry
-; The entire loop from waitForK until rjmp waitForK above must not exceed two
-; bit times (= 27 cycles).
-
-;----------------------------------------------------------------------------
-; push more registers and initialize values while we sample the first bits:
-;----------------------------------------------------------------------------
-haveTwoBitsK:
- push x1 ;[0]
- push x2 ;[2]
- push x3 ;[4] (leap2)
- ldi leap2, 0x55 ;[6] add leap cycle on 2nd,5th,8th,... stuff bit
- push x4 ;[7] == leap
- ldi leap, 0x55 ;[9] skip leap cycle on 2nd,5th,8th,... byte received
- push cnt ;[10]
- ldi cnt, USB_BUFSIZE ;[12] [rx loop init]
- ldi x2, 1<<USBPLUS ;[13] current line state is K state. D+=="1", D-=="0"
-bit0:
- in x1, USBIN ;[0] sample line state
- andi x1, USBMASK ;[1] filter only D+ and D- bits
- rjmp handleBit ;[2] make bit0 14 cycles long
-
-;----------------------------------------------------------------------------
-; Process bit7. However, bit 6 still may need unstuffing.
-;----------------------------------------------------------------------------
-
-b6checkUnstuff:
- dec bitcnt ;[9]
- breq unstuff6 ;[10]
-bit7:
- subi cnt, 1 ;[11] cannot use dec becaus it does not affect the carry flag
- brcs overflow ;[12] Too many bytes received. Ignore packet
- in x1, USBIN ;[0] sample line state
- andi x1, USBMASK ;[1] filter only D+ and D- bits
- cpse x1, x2 ;[2] when previous line state equals current line state, handle "1"
- rjmp b7handle0 ;[3] when line state differs, handle "0"
- sec ;[4]
- ror shift ;[5] shift "1" into the data
- st y+, shift ;[6] store the data into the buffer
- ldi shift, 0x40 ;[7] reset data for receiving the next byte
- subi leap, 0x55 ;[9] trick to introduce a leap cycle every 3 bytes
- brcc nextInst ;[10 or 11] it will fail after 85 bytes. However low speed can only receive 11
- dec bitcnt ;[11 or 12]
- brne bit0 ;[12 or 13]
- ldi x1, 1 ;[13 or 14] unstuffing bit 7
- in bitcnt, USBIN ;[0] sample stuff bit
- rjmp unstuff ;[1]
-
-b7handle0:
- mov x2,x1 ;[5] Set x2 to current line state
- ldi bitcnt, 6 ;[6]
- lsr shift ;[7] shift "0" into the data
- st y+, shift ;[8] store data into the buffer
- ldi shift, 0x40 ;[10] reset data for receiving the next byte
- subi leap, 0x55 ;[11] trick to introduce a leap cycle every 3 bytes
- brcs bit0 ;[12] it will fail after 85 bytes. However low speed can only receive 11
- rjmp bit0 ;[13]
-
-
-;----------------------------------------------------------------------------
-; Handle unstuff
-; x1==0xFF indicate unstuffing bit6
-;----------------------------------------------------------------------------
-
-unstuff6:
- ldi x1,0xFF ;[12] indicate unstuffing bit 6
- in bitcnt, USBIN ;[0] sample stuff bit
- nop ;[1] fix timing
-unstuff: ;b0-5 b6 b7
- mov x2,bitcnt ;[3] [2] [3] Set x2 to match line state
- subi leap2, 0x55 ;[4] [3] [4] delay loop
- brcs nextInst ;[5] [4] [5] add one cycle every three stuff bits
- sbci leap2,0 ;[6] [5] [6]
- ldi bitcnt,6 ;[7] [6] [7] reset bit stuff counter
- andi x2, USBMASK ;[8] [7] [8] only keep D+ and D-
- cpi x1,0 ;[9] [8] [9]
- brmi bit7 ;[10] [9] [10] finished unstuffing bit6 When x1<0
- breq bitloop ;[11] --- [11] finished unstuffing bit0-5 when x1=0
- nop ;--- --- [12]
- in x1, USBIN ;--- --- [0] sample line state for bit0
- andi x1, USBMASK ;--- --- [1] filter only D+ and D- bits
- rjmp handleBit ;--- --- [2] make bit0 14 cycles long
-
-;----------------------------------------------------------------------------
-; Receiver loop (numbers in brackets are cycles within byte after instr)
-;----------------------------------------------------------------------------
-bitloop:
- in x1, USBIN ;[0] sample line state
- andi x1, USBMASK ;[1] filter only D+ and D- bits
- breq se0 ;[2] both lines are low so handle se0
-handleBit:
- cpse x1, x2 ;[3] when previous line state equals current line state, handle "1"
- rjmp handle0 ;[4] when line state differs, handle "0"
- sec ;[5]
- ror shift ;[6] shift "1" into the data
- brcs b6checkUnstuff ;[7] When after shift C is set, next bit is bit7
- nop2 ;[8]
- dec bitcnt ;[10]
- brne bitloop ;[11]
- ldi x1,0 ;[12] indicate unstuff for bit other than bit6 or bit7
- in bitcnt, USBIN ;[0] sample stuff bit
- rjmp unstuff ;[1]
-
-handle0:
- mov x2, x1 ;[6] Set x2 to current line state
- ldi bitcnt, 6 ;[7] reset unstuff counter.
- lsr shift ;[8] shift "0" into the data
- brcs bit7 ;[9] When after shift C is set, next bit is bit7
- nop ;[10]
- rjmp bitloop ;[11]
-
-;----------------------------------------------------------------------------
-; End of receive loop. Now start handling EOP
-;----------------------------------------------------------------------------
-
-macro POP_STANDARD ; 14 cycles
- pop cnt
- pop x4
- pop x3
- pop x2
- pop x1
- pop shift
- pop bitcnt
- endm
-macro POP_RETI ; 7 cycles
- pop YH
- pop YL
- out SREG, YL
- pop YL
- endm
-
-
-
-#include "asmcommon.inc"
-
-; USB spec says:
-; idle = J
-; J = (D+ = 0), (D- = 1)
-; K = (D+ = 1), (D- = 0)
-; Spec allows 7.5 bit times from EOP to SOP for replies
-; 7.5 bit times is 100 cycles. This implementation arrives a bit later at se0
-; then specified in the include file but there is plenty of time
-
-bitstuffN:
- eor x1, x4 ;[8]
- ldi x2, 0 ;[9]
- nop2 ;[10]
- out USBOUT, x1 ;[12] <-- out
- rjmp didStuffN ;[0]
-
-bitstuff7:
- eor x1, x4 ;[6]
- ldi x2, 0 ;[7] Carry is zero due to brcc
- rol shift ;[8] compensate for ror shift at branch destination
- nop2 ;[9]
- rjmp didStuff7 ;[11]
-
-sendNakAndReti:
- ldi x3, USBPID_NAK ;[-18]
- rjmp sendX3AndReti ;[-17]
-sendAckAndReti:
- ldi cnt, USBPID_ACK ;[-17]
-sendCntAndReti:
- mov x3, cnt ;[-16]
-sendX3AndReti:
- ldi YL, 20 ;[-15] x3==r20 address is 20
- ldi YH, 0 ;[-14]
- ldi cnt, 2 ;[-13]
-; rjmp usbSendAndReti fallthrough
-
-;usbSend:
-;pointer to data in 'Y'
-;number of bytes in 'cnt' -- including sync byte [range 2 ... 12]
-;uses: x1...x4, btcnt, shift, cnt, Y
-;Numbers in brackets are time since first bit of sync pattern is sent
-;We don't match the transfer rate exactly (don't insert leap cycles every third
-;byte) because the spec demands only 1.5% precision anyway.
-usbSendAndReti: ; 12 cycles until SOP
- in x2, USBDDR ;[-12]
- ori x2, USBMASK ;[-11]
- sbi USBOUT, USBMINUS;[-10] prepare idle state; D+ and D- must have been 0 (no pullups)
- in x1, USBOUT ;[-8] port mirror for tx loop
- out USBDDR, x2 ;[-7] <- acquire bus
-; need not init x2 (bitstuff history) because sync starts with 0
- ldi x4, USBMASK ;[-6] exor mask
- ldi shift, 0x80 ;[-5] sync byte is first byte sent
-txByteLoop:
- ldi bitcnt, 0x49 ;[-4] [10] binary 01001001
-txBitLoop:
- sbrs shift, 0 ;[-3] [10] [11]
- eor x1, x4 ;[-2] [11] [12]
- out USBOUT, x1 ;[-1] [12] [13] <-- out N
- ror shift ;[0] [13] [14]
- ror x2 ;[1]
-didStuffN:
- nop2 ;[2]
- nop ;[4]
- cpi x2, 0xfc ;[5]
- brcc bitstuffN ;[6]
- lsr bitcnt ;[7]
- brcc txBitLoop ;[8]
- brne txBitLoop ;[9]
-
- sbrs shift, 0 ;[10]
- eor x1, x4 ;[11]
-didStuff7:
- out USBOUT, x1 ;[-1] [13] <-- out 7
- ror shift ;[0] [14]
- ror x2 ;[1]
- nop ;[2]
- cpi x2, 0xfc ;[3]
- brcc bitstuff7 ;[4]
- ld shift, y+ ;[5]
- dec cnt ;[7]
- brne txByteLoop ;[8]
-;make SE0:
- cbr x1, USBMASK ;[9] prepare SE0 [spec says EOP may be 25 to 30 cycles]
- lds x2, usbNewDeviceAddr;[10]
- lsl x2 ;[12] we compare with left shifted address
- out USBOUT, x1 ;[13] <-- out SE0 -- from now 2 bits = 22 cycles until bus idle
- subi YL, 20 + 2 ;[0] Only assign address on data packets, not ACK/NAK in x3
- sbci YH, 0 ;[1]
-;2006-03-06: moved transfer of new address to usbDeviceAddr from C-Code to asm:
-;set address only after data packet was sent, not after handshake
- breq skipAddrAssign ;[2]
- sts usbDeviceAddr, x2; if not skipped: SE0 is one cycle longer
-skipAddrAssign:
-;end of usbDeviceAddress transfer
- ldi x2, 1<<USB_INTR_PENDING_BIT;[4] int0 occurred during TX -- clear pending flag
- USB_STORE_PENDING(x2) ;[5]
- ori x1, USBIDLE ;[6]
- in x2, USBDDR ;[7]
- cbr x2, USBMASK ;[8] set both pins to input
- mov x3, x1 ;[9]
- cbr x3, USBMASK ;[10] configure no pullup on both pins
- ldi x4, 5 ;[11]
-se0Delay:
- dec x4 ;[12] [15] [18] [21] [24]
- brne se0Delay ;[13] [16] [19] [22] [25]
- out USBOUT, x1 ;[26] <-- out J (idle) -- end of SE0 (EOP signal)
- out USBDDR, x2 ;[27] <-- release bus now
- out USBOUT, x3 ;[28] <-- ensure no pull-up resistors are active
- rjmp doReturn
+++ /dev/null
-/* Name: usbportability.h
- * Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
- * Author: Christian Starkjohann
- * Creation Date: 2008-06-17
- * Tabsize: 4
- * Copyright: (c) 2008 by OBJECTIVE DEVELOPMENT Software GmbH
- * License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
- * This Revision: $Id: usbportability.h 740 2009-04-13 18:23:31Z cs $
- */
-
-/*
-General Description:
-This header is intended to contain all (or at least most of) the compiler
-and library dependent stuff. The C code is written for avr-gcc and avr-libc.
-The API of other development environments is converted to gcc's and avr-libc's
-API by means of defines.
-
-This header also contains all system includes since they depend on the
-development environment.
-
-Thanks to Oleg Semyonov for his help with the IAR tools port!
-*/
-
-#ifndef __usbportability_h_INCLUDED__
-#define __usbportability_h_INCLUDED__
-
-/* We check explicitly for IAR and CodeVision. Default is avr-gcc/avr-libc. */
-
-/* ------------------------------------------------------------------------- */
-#if defined __IAR_SYSTEMS_ICC__ || defined __IAR_SYSTEMS_ASM__ /* check for IAR */
-/* ------------------------------------------------------------------------- */
-
-#ifndef ENABLE_BIT_DEFINITIONS
-# define ENABLE_BIT_DEFINITIONS 1 /* Enable bit definitions */
-#endif
-
-/* Include IAR headers */
-#include <ioavr.h>
-#ifndef __IAR_SYSTEMS_ASM__
-# include <inavr.h>
-#endif
-
-#define __attribute__(arg) /* not supported on IAR */
-
-#ifdef __IAR_SYSTEMS_ASM__
-# define __ASSEMBLER__ /* IAR does not define standard macro for asm */
-#endif
-
-#ifdef __HAS_ELPM__
-# define PROGMEM __farflash
-#else
-# define PROGMEM __flash
-#endif
-
-#define USB_READ_FLASH(addr) (*(PROGMEM char *)(addr))
-
-/* The following definitions are not needed by the driver, but may be of some
- * help if you port a gcc based project to IAR.
- */
-#define cli() __disable_interrupt()
-#define sei() __enable_interrupt()
-#define wdt_reset() __watchdog_reset()
-#define _BV(x) (1 << (x))
-
-/* assembler compatibility macros */
-#define nop2 rjmp $+2 /* jump to next instruction */
-#define XL r26
-#define XH r27
-#define YL r28
-#define YH r29
-#define ZL r30
-#define ZH r31
-#define lo8(x) LOW(x)
-#define hi8(x) (((x)>>8) & 0xff) /* not HIGH to allow XLINK to make a proper range check */
-
-/* Depending on the device you use, you may get problems with the way usbdrv.h
- * handles the differences between devices. Since IAR does not use #defines
- * for MCU registers, we can't check for the existence of a particular
- * register with an #ifdef. If the autodetection mechanism fails, include
- * definitions for the required USB_INTR_* macros in your usbconfig.h. See
- * usbconfig-prototype.h and usbdrv.h for details.
- */
-
-/* ------------------------------------------------------------------------- */
-#elif __CODEVISIONAVR__ /* check for CodeVision AVR */
-/* ------------------------------------------------------------------------- */
-/* This port is not working (yet) */
-
-/* #define F_CPU _MCU_CLOCK_FREQUENCY_ seems to be defined automatically */
-
-#include <io.h>
-#include <delay.h>
-
-#define __attribute__(arg) /* not supported on IAR */
-
-#define PROGMEM __flash
-#define USB_READ_FLASH(addr) (*(PROGMEM char *)(addr))
-
-#ifndef __ASSEMBLER__
-static inline void cli(void)
-{
- #asm("cli");
-}
-static inline void sei(void)
-{
- #asm("sei");
-}
-#endif
-#define _delay_ms(t) delay_ms(t)
-#define _BV(x) (1 << (x))
-#define USB_CFG_USE_SWITCH_STATEMENT 1 /* macro for if() cascase fails for unknown reason */
-
-#define macro .macro
-#define endm .endmacro
-#define nop2 rjmp .+0 /* jump to next instruction */
-
-/* ------------------------------------------------------------------------- */
-#else /* default development environment is avr-gcc/avr-libc */
-/* ------------------------------------------------------------------------- */
-
-#include <avr/io.h>
-#ifdef __ASSEMBLER__
-# define _VECTOR(N) __vector_ ## N /* io.h does not define this for asm */
-#else
-# include <avr/pgmspace.h>
-#endif
-
-#define USB_READ_FLASH(addr) pgm_read_byte(addr)
-
-#define macro .macro
-#define endm .endm
-#define nop2 rjmp .+0 /* jump to next instruction */
-
-#endif /* development environment */
-
-/* for conveniecne, ensure that PRG_RDB exists */
-#ifndef PRG_RDB
-# define PRG_RDB(addr) USB_READ_FLASH(addr)
-#endif
-#endif /* __usbportability_h_INCLUDED__ */
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