+++ /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
projects / fnordlicht-mini / blobdiff