-/*\r
- * at91sam7s USB CDC device implementation\r
- *\r
- * Copyright (c) 2012, Roel Verdult\r
- * All rights reserved.\r
- *\r
- * Redistribution and use in source and binary forms, with or without\r
- * modification, are permitted provided that the following conditions are met:\r
- * 1. Redistributions of source code must retain the above copyright\r
- * notice, this list of conditions and the following disclaimer.\r
- * 2. Redistributions in binary form must reproduce the above copyright\r
- * notice, this list of conditions and the following disclaimer in the\r
- * documentation and/or other materials provided with the distribution.\r
- * 3. Neither the name of the copyright holders nor the\r
- * names of its contributors may be used to endorse or promote products\r
- * derived from this software without specific prior written permission.\r
- *\r
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY\r
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED\r
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE\r
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY\r
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES\r
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;\r
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND\r
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\r
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS\r
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\r
- *\r
- * based on the "Basic USB Example" from ATMEL (doc6123.pdf)\r
- *\r
- * @file usb_cdc.c\r
- * @brief\r
- */\r
-\r
-#include "usb_cdc.h"\r
-#include "at91sam7s512.h"\r
-#include "config_gpio.h"\r
-\r
-\r
-#define AT91C_EP_CONTROL 0\r
-#define AT91C_EP_OUT 1\r
-#define AT91C_EP_IN 2\r
-#define AT91C_EP_NOTIFY 3\r
-#define AT91C_EP_OUT_SIZE 0x40\r
-#define AT91C_EP_IN_SIZE 0x40\r
-\r
-// Language must always be 0.\r
-#define STR_LANGUAGE_CODES 0x00\r
-#define STR_MANUFACTURER 0x01\r
-#define STR_PRODUCT 0x02\r
-\r
-static const char devDescriptor[] = {\r
- /* Device descriptor */\r
- 0x12, // bLength\r
- 0x01, // bDescriptorType\r
- 0x00,0x02, // Complies with USB Spec. Release (0200h = release 2.0)\r
- 0x02, // bDeviceClass: (Communication Device Class)\r
- 0x00, // bDeviceSubclass: (unused at this time)\r
- 0x00, // bDeviceProtocol: (unused at this time)\r
- 0x08, // bMaxPacketSize0\r
- 0xc4,0x9a, // Vendor ID (0x9ac4 = J. Westhues)\r
- 0x8f,0x4b, // Product ID (0x4b8f = Proxmark-3 RFID Instrument)\r
- 0x01,0x00, // Device release number (0001)\r
- STR_MANUFACTURER, // iManufacturer\r
- STR_PRODUCT, // iProduct\r
- 0x00, // iSerialNumber\r
- 0x01 // bNumConfigs\r
-};\r
-\r
-static const char cfgDescriptor[] = {\r
- /* ============== CONFIGURATION 1 =========== */\r
- /* Configuration 1 descriptor */\r
- 0x09, // CbLength\r
- 0x02, // CbDescriptorType\r
- 0x43, // CwTotalLength 2 EP + Control\r
- 0x00,\r
- 0x02, // CbNumInterfaces\r
- 0x01, // CbConfigurationValue\r
- 0x00, // CiConfiguration\r
- 0x80, // CbmAttributes (Bus Powered)\r
- 0x4B, // CMaxPower (150mA max current drawn from bus)\r
-\r
- /* Interface 0 Descriptor: Communication Class Interface */\r
- 0x09, // bLength\r
- 0x04, // bDescriptorType\r
- 0x00, // bInterfaceNumber\r
- 0x00, // bAlternateSetting\r
- 0x01, // bNumEndpoints\r
- 0x02, // bInterfaceClass: Communication Interface Class\r
- 0x02, // bInterfaceSubclass: Abstract Control Model\r
- 0x01, // bInterfaceProtocol: Common AT Commands, V.25ter\r
- 0x00, // iInterface\r
-\r
- /* Header Functional Descriptor */\r
- 0x05, // bFunction Length\r
- 0x24, // bDescriptor type: CS_INTERFACE\r
- 0x00, // bDescriptor subtype: Header Functional Descriptor\r
- 0x10, // bcdCDC:1.1\r
- 0x01,\r
-\r
- /* ACM Functional Descriptor */\r
- 0x04, // bFunctionLength\r
- 0x24, // bDescriptor Type: CS_INTERFACE\r
- 0x02, // bDescriptor Subtype: Abstract Control Management Functional Descriptor\r
- 0x02, // bmCapabilities: D1: Device supports the request combination of Set_Line_Coding, Set_Control_Line_State, Get_Line_Coding, and the notification Serial_State\r
-\r
- /* Union Functional Descriptor */\r
- 0x05, // bFunctionLength\r
- 0x24, // bDescriptorType: CS_INTERFACE\r
- 0x06, // bDescriptor Subtype: Union Functional Descriptor\r
- 0x00, // bMasterInterface: Communication Class Interface\r
- 0x01, // bSlaveInterface0: Data Class Interface\r
-\r
- /* Call Management Functional Descriptor */\r
- 0x05, // bFunctionLength\r
- 0x24, // bDescriptor Type: CS_INTERFACE\r
- 0x01, // bDescriptor Subtype: Call Management Functional Descriptor\r
- 0x00, // bmCapabilities: Device sends/receives call management information only over the Communication Class interface. Device does not handle call management itself\r
- 0x01, // bDataInterface: Data Class Interface 1\r
-\r
- /* Endpoint 1 descriptor */\r
- 0x07, // bLength\r
- 0x05, // bDescriptorType\r
- 0x83, // bEndpointAddress: Endpoint 03 - IN\r
- 0x03, // bmAttributes: INT\r
- 0x08, // wMaxPacketSize: 8\r
- 0x00,\r
- 0xFF, // bInterval\r
-\r
- /* Interface 1 Descriptor: Data Class Interface */\r
- 0x09, // bLength\r
- 0x04, // bDescriptorType\r
- 0x01, // bInterfaceNumber\r
- 0x00, // bAlternateSetting\r
- 0x02, // bNumEndpoints\r
- 0x0A, // bInterfaceClass: Data Interface Class\r
- 0x00, // bInterfaceSubclass: not used\r
- 0x00, // bInterfaceProtocol: No class specific protocol required)\r
- 0x00, // iInterface\r
-\r
- /* Endpoint 1 descriptor */\r
- 0x07, // bLength\r
- 0x05, // bDescriptorType\r
- 0x01, // bEndpointAddress: Endpoint 01 - OUT\r
- 0x02, // bmAttributes: BULK\r
- AT91C_EP_OUT_SIZE, // wMaxPacketSize\r
- 0x00,\r
- 0x00, // bInterval\r
-\r
- /* Endpoint 2 descriptor */\r
- 0x07, // bLength\r
- 0x05, // bDescriptorType\r
- 0x82, // bEndpointAddress: Endpoint 02 - IN\r
- 0x02, // bmAttributes: BULK\r
- AT91C_EP_IN_SIZE, // wMaxPacketSize\r
- 0x00,\r
- 0x00 // bInterval\r
-};\r
-\r
-static const char StrDescLanguageCodes[] = {\r
- 4, // Length\r
- 0x03, // Type is string\r
- 0x09, 0x04 // supported language Code 0 = 0x0409 (English)\r
-};\r
-\r
-// Note: ModemManager (Linux) ignores Proxmark3 devices by matching the\r
-// manufacturer string "proxmark.org". Don't change this.\r
-static const char StrDescManufacturer[] = {\r
- 26, // Length\r
- 0x03, // Type is string\r
- 'p', 0x00,\r
- 'r', 0x00,\r
- 'o', 0x00,\r
- 'x', 0x00,\r
- 'm', 0x00,\r
- 'a', 0x00,\r
- 'r', 0x00,\r
- 'k', 0x00,\r
- '.', 0x00,\r
- 'o', 0x00,\r
- 'r', 0x00,\r
- 'g', 0x00\r
-};\r
-\r
-static const char StrDescProduct[] = {\r
- 20, // Length\r
- 0x03, // Type is string\r
- 'p', 0x00,\r
- 'r', 0x00,\r
- 'o', 0x00,\r
- 'x', 0x00,\r
- 'm', 0x00,\r
- 'a', 0x00,\r
- 'r', 0x00,\r
- 'k', 0x00,\r
- '3', 0x00\r
-};\r
-\r
-const char* getStringDescriptor(uint8_t idx)\r
-{\r
- switch (idx) {\r
- case STR_LANGUAGE_CODES:\r
- return StrDescLanguageCodes;\r
- case STR_MANUFACTURER:\r
- return StrDescManufacturer;\r
- case STR_PRODUCT:\r
- return StrDescProduct;\r
- default:\r
- return NULL;\r
- }\r
-}\r
-\r
-// Bitmap for all status bits in CSR which must be written as 1 to cause no effect\r
-#define REG_NO_EFFECT_1_ALL AT91C_UDP_RX_DATA_BK0 | AT91C_UDP_RX_DATA_BK1 \\r
- |AT91C_UDP_STALLSENT | AT91C_UDP_RXSETUP \\r
- |AT91C_UDP_TXCOMP\r
-\r
-// Clear flags in the UDP_CSR register\r
-#define UDP_CLEAR_EP_FLAGS(endpoint, flags) { \\r
- volatile unsigned int reg; \\r
- reg = pUdp->UDP_CSR[(endpoint)]; \\r
- reg |= REG_NO_EFFECT_1_ALL; \\r
- reg &= ~(flags); \\r
- pUdp->UDP_CSR[(endpoint)] = reg; \\r
-} \r
-\r
-// Set flags in the UDP_CSR register\r
-#define UDP_SET_EP_FLAGS(endpoint, flags) { \\r
- volatile unsigned int reg; \\r
- reg = pUdp->UDP_CSR[(endpoint)]; \\r
- reg |= REG_NO_EFFECT_1_ALL; \\r
- reg |= (flags); \\r
- pUdp->UDP_CSR[(endpoint)] = reg; \\r
-}\r
-\r
-/* USB standard request codes */\r
-#define STD_GET_STATUS_ZERO 0x0080\r
-#define STD_GET_STATUS_INTERFACE 0x0081\r
-#define STD_GET_STATUS_ENDPOINT 0x0082\r
-\r
-#define STD_CLEAR_FEATURE_ZERO 0x0100\r
-#define STD_CLEAR_FEATURE_INTERFACE 0x0101\r
-#define STD_CLEAR_FEATURE_ENDPOINT 0x0102\r
-\r
-#define STD_SET_FEATURE_ZERO 0x0300\r
-#define STD_SET_FEATURE_INTERFACE 0x0301\r
-#define STD_SET_FEATURE_ENDPOINT 0x0302\r
-\r
-#define STD_SET_ADDRESS 0x0500\r
-#define STD_GET_DESCRIPTOR 0x0680\r
-#define STD_SET_DESCRIPTOR 0x0700\r
-#define STD_GET_CONFIGURATION 0x0880\r
-#define STD_SET_CONFIGURATION 0x0900\r
-#define STD_GET_INTERFACE 0x0A81\r
-#define STD_SET_INTERFACE 0x0B01\r
-#define STD_SYNCH_FRAME 0x0C82\r
-\r
-/* CDC Class Specific Request Code */\r
-#define GET_LINE_CODING 0x21A1\r
-#define SET_LINE_CODING 0x2021\r
-#define SET_CONTROL_LINE_STATE 0x2221\r
-\r
-typedef struct {\r
- unsigned int dwDTERRate;\r
- char bCharFormat;\r
- char bParityType;\r
- char bDataBits;\r
-} AT91S_CDC_LINE_CODING, *AT91PS_CDC_LINE_CODING;\r
-\r
-AT91S_CDC_LINE_CODING line = {\r
- 115200, // baudrate\r
- 0, // 1 Stop Bit\r
- 0, // None Parity\r
- 8}; // 8 Data bits\r
-\r
-\r
-void AT91F_CDC_Enumerate();\r
-\r
-AT91PS_UDP pUdp = AT91C_BASE_UDP;\r
-byte_t btConfiguration = 0;\r
-byte_t btConnection = 0;\r
-byte_t btReceiveBank = AT91C_UDP_RX_DATA_BK0;\r
-\r
-\r
-//*----------------------------------------------------------------------------\r
-//* \fn usb_disable\r
-//* \brief This function deactivates the USB device\r
-//*----------------------------------------------------------------------------\r
-void usb_disable() {\r
- // Disconnect the USB device\r
- AT91C_BASE_PIOA->PIO_ODR = GPIO_USB_PU;\r
-\r
- // Clear all lingering interrupts\r
- if(pUdp->UDP_ISR & AT91C_UDP_ENDBUSRES) {\r
- pUdp->UDP_ICR = AT91C_UDP_ENDBUSRES;\r
- }\r
-}\r
-\r
-\r
-//*----------------------------------------------------------------------------\r
-//* \fn usb_enable\r
-//* \brief This function Activates the USB device\r
-//*----------------------------------------------------------------------------\r
-void usb_enable() {\r
- // Set the PLL USB Divider\r
- AT91C_BASE_CKGR->CKGR_PLLR |= AT91C_CKGR_USBDIV_1 ;\r
-\r
- // Specific Chip USB Initialisation\r
- // Enables the 48MHz USB clock UDPCK and System Peripheral USB Clock\r
- AT91C_BASE_PMC->PMC_SCER = AT91C_PMC_UDP;\r
- AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_UDP);\r
-\r
- // Enable UDP PullUp (USB_DP_PUP) : enable & Clear of the corresponding PIO\r
- // Set in PIO mode and Configure in Output\r
- AT91C_BASE_PIOA->PIO_PER = GPIO_USB_PU; // Set in PIO mode\r
- AT91C_BASE_PIOA->PIO_OER = GPIO_USB_PU; // Configure as Output\r
-\r
- // Clear for set the Pullup resistor\r
- AT91C_BASE_PIOA->PIO_CODR = GPIO_USB_PU;\r
-\r
- // Disconnect and reconnect USB controller for 100ms\r
- usb_disable();\r
-\r
- // Wait for a short while\r
- for (volatile size_t i=0; i<0x100000; i++);\r
-\r
- // Reconnect USB reconnect\r
- AT91C_BASE_PIOA->PIO_SODR = GPIO_USB_PU;\r
- AT91C_BASE_PIOA->PIO_OER = GPIO_USB_PU;\r
-}\r
-\r
-\r
-//*----------------------------------------------------------------------------\r
-//* \fn usb_check\r
-//* \brief Test if the device is configured and handle enumeration\r
-//*----------------------------------------------------------------------------\r
-bool usb_check() {\r
- AT91_REG isr = pUdp->UDP_ISR;\r
-\r
- if (isr & AT91C_UDP_ENDBUSRES) {\r
- pUdp->UDP_ICR = AT91C_UDP_ENDBUSRES;\r
- // reset all endpoints\r
- pUdp->UDP_RSTEP = (unsigned int)-1;\r
- pUdp->UDP_RSTEP = 0;\r
- // Enable the function\r
- pUdp->UDP_FADDR = AT91C_UDP_FEN;\r
- // Configure endpoint 0\r
- pUdp->UDP_CSR[AT91C_EP_CONTROL] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_CTRL);\r
- } else if (isr & AT91C_UDP_EPINT0) {\r
- pUdp->UDP_ICR = AT91C_UDP_EPINT0;\r
- AT91F_CDC_Enumerate();\r
- }\r
- return (btConfiguration) ? true : false;\r
-}\r
-\r
-\r
-bool usb_poll()\r
-{\r
- if (!usb_check()) return false;\r
- return (pUdp->UDP_CSR[AT91C_EP_OUT] & btReceiveBank);\r
-}\r
-\r
-\r
-/**\r
- In github PR #129, some users appears to get a false positive from\r
- usb_poll, which returns true, but the usb_read operation\r
- still returns 0.\r
- This check is basically the same as above, but also checks\r
- that the length available to read is non-zero, thus hopefully fixes the\r
- bug.\r
-**/\r
-bool usb_poll_validate_length()\r
-{\r
- if (!usb_check()) return false;\r
- if (!(pUdp->UDP_CSR[AT91C_EP_OUT] & btReceiveBank)) return false;\r
- return (pUdp->UDP_CSR[AT91C_EP_OUT] >> 16) > 0;\r
-}\r
-\r
-//*----------------------------------------------------------------------------\r
-//* \fn usb_read\r
-//* \brief Read available data from Endpoint OUT\r
-//*----------------------------------------------------------------------------\r
-uint32_t usb_read(byte_t* data, size_t len) {\r
- byte_t bank = btReceiveBank;\r
- uint32_t packetSize, nbBytesRcv = 0;\r
- uint32_t time_out = 0;\r
- \r
- while (len) {\r
- if (!usb_check()) break;\r
-\r
- if ( pUdp->UDP_CSR[AT91C_EP_OUT] & bank ) {\r
- packetSize = MIN(pUdp->UDP_CSR[AT91C_EP_OUT] >> 16, len);\r
- len -= packetSize;\r
- while(packetSize--)\r
- data[nbBytesRcv++] = pUdp->UDP_FDR[AT91C_EP_OUT];\r
- UDP_CLEAR_EP_FLAGS(AT91C_EP_OUT, bank);\r
- if (bank == AT91C_UDP_RX_DATA_BK0) {\r
- bank = AT91C_UDP_RX_DATA_BK1;\r
- } else {\r
- bank = AT91C_UDP_RX_DATA_BK0;\r
- }\r
- }\r
- if (time_out++ == 0x1fff) break;\r
- }\r
-\r
- btReceiveBank = bank;\r
- return nbBytesRcv;\r
-}\r
-\r
-\r
-//*----------------------------------------------------------------------------\r
-//* \fn usb_write\r
-//* \brief Send through endpoint 2\r
-//*----------------------------------------------------------------------------\r
-uint32_t usb_write(const byte_t* data, const size_t len) {\r
- size_t length = len;\r
- uint32_t cpt = 0;\r
-\r
- if (!length) return 0;\r
- if (!usb_check()) return 0;\r
-\r
- // Send the first packet\r
- cpt = MIN(length, AT91C_EP_IN_SIZE);\r
- length -= cpt;\r
- while (cpt--) {\r
- pUdp->UDP_FDR[AT91C_EP_IN] = *data++;\r
- }\r
- UDP_SET_EP_FLAGS(AT91C_EP_IN, AT91C_UDP_TXPKTRDY);\r
-\r
- while (length) {\r
- // Fill the next bank\r
- cpt = MIN(length, AT91C_EP_IN_SIZE);\r
- length -= cpt;\r
- while (cpt--) {\r
- pUdp->UDP_FDR[AT91C_EP_IN] = *data++;\r
- }\r
- // Wait for the previous bank to be sent\r
- while (!(pUdp->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP)) {\r
- if (!usb_check()) return length;\r
- }\r
- UDP_CLEAR_EP_FLAGS(AT91C_EP_IN, AT91C_UDP_TXCOMP);\r
- while (pUdp->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP);\r
- UDP_SET_EP_FLAGS(AT91C_EP_IN, AT91C_UDP_TXPKTRDY);\r
- }\r
-\r
- // Wait for the end of transfer\r
- while (!(pUdp->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP)) {\r
- if (!usb_check()) return length;\r
- }\r
-\r
- UDP_CLEAR_EP_FLAGS(AT91C_EP_IN, AT91C_UDP_TXCOMP);\r
- while (pUdp->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP);\r
-\r
- return length;\r
-}\r
-\r
-\r
-//*----------------------------------------------------------------------------\r
-//* \fn AT91F_USB_SendData\r
-//* \brief Send Data through the control endpoint\r
-//*----------------------------------------------------------------------------\r
-unsigned int csrTab[100] = {0x00};\r
-unsigned char csrIdx = 0;\r
-\r
-static void AT91F_USB_SendData(AT91PS_UDP pUdp, const char *pData, uint32_t length) {\r
- uint32_t cpt = 0;\r
- AT91_REG csr;\r
-\r
- do {\r
- cpt = MIN(length, 8);\r
- length -= cpt;\r
-\r
- while (cpt--)\r
- pUdp->UDP_FDR[0] = *pData++;\r
-\r
- if (pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_TXCOMP) {\r
- UDP_CLEAR_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_TXCOMP);\r
- while (pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_TXCOMP);\r
- }\r
-\r
- UDP_SET_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_TXPKTRDY);\r
- do {\r
- csr = pUdp->UDP_CSR[AT91C_EP_CONTROL];\r
-\r
- // Data IN stage has been stopped by a status OUT\r
- if (csr & AT91C_UDP_RX_DATA_BK0) {\r
- UDP_CLEAR_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_RX_DATA_BK0);\r
- return;\r
- }\r
- } while ( !(csr & AT91C_UDP_TXCOMP) );\r
-\r
- } while (length);\r
-\r
- if (pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_TXCOMP) {\r
- UDP_CLEAR_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_TXCOMP);\r
- while (pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_TXCOMP);\r
- }\r
-}\r
-\r
-\r
-//*----------------------------------------------------------------------------\r
-//* \fn AT91F_USB_SendZlp\r
-//* \brief Send zero length packet through the control endpoint\r
-//*----------------------------------------------------------------------------\r
-void AT91F_USB_SendZlp(AT91PS_UDP pUdp) {\r
- UDP_SET_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_TXPKTRDY);\r
- while ( !(pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_TXCOMP) );\r
- UDP_CLEAR_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_TXCOMP);\r
- while (pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_TXCOMP);\r
-}\r
-\r
-\r
-//*----------------------------------------------------------------------------\r
-//* \fn AT91F_USB_SendStall\r
-//* \brief Stall the control endpoint\r
-//*----------------------------------------------------------------------------\r
-void AT91F_USB_SendStall(AT91PS_UDP pUdp) {\r
- UDP_SET_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_FORCESTALL);\r
- while ( !(pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_ISOERROR) );\r
- UDP_CLEAR_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_FORCESTALL | AT91C_UDP_ISOERROR);\r
- while (pUdp->UDP_CSR[AT91C_EP_CONTROL] & (AT91C_UDP_FORCESTALL | AT91C_UDP_ISOERROR));\r
-}\r
-\r
-\r
-//*----------------------------------------------------------------------------\r
-//* \fn AT91F_CDC_Enumerate\r
-//* \brief This function is a callback invoked when a SETUP packet is received\r
-//*----------------------------------------------------------------------------\r
-void AT91F_CDC_Enumerate() {\r
- byte_t bmRequestType, bRequest;\r
- uint16_t wValue, wIndex, wLength, wStatus;\r
-\r
- if ( !(pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_RXSETUP) )\r
- return;\r
-\r
- bmRequestType = pUdp->UDP_FDR[AT91C_EP_CONTROL];\r
- bRequest = pUdp->UDP_FDR[AT91C_EP_CONTROL];\r
- wValue = (pUdp->UDP_FDR[AT91C_EP_CONTROL] & 0xFF);\r
- wValue |= (pUdp->UDP_FDR[AT91C_EP_CONTROL] << 8);\r
- wIndex = (pUdp->UDP_FDR[AT91C_EP_CONTROL] & 0xFF);\r
- wIndex |= (pUdp->UDP_FDR[AT91C_EP_CONTROL] << 8);\r
- wLength = (pUdp->UDP_FDR[AT91C_EP_CONTROL] & 0xFF);\r
- wLength |= (pUdp->UDP_FDR[AT91C_EP_CONTROL] << 8);\r
-\r
- if (bmRequestType & 0x80) { // Data Phase Transfer Direction Device to Host\r
- UDP_SET_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_DIR);\r
- while ( !(pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_DIR) );\r
- }\r
- UDP_CLEAR_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_RXSETUP);\r
- while ( (pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_RXSETUP) );\r
-\r
- // Handle supported standard device request Cf Table 9-3 in USB specification Rev 1.1\r
- switch ((bRequest << 8) | bmRequestType) {\r
- case STD_GET_DESCRIPTOR:\r
- if (wValue == 0x100) // Return Device Descriptor\r
- AT91F_USB_SendData(pUdp, devDescriptor, MIN(sizeof(devDescriptor), wLength));\r
- else if (wValue == 0x200) // Return Configuration Descriptor\r
- AT91F_USB_SendData(pUdp, cfgDescriptor, MIN(sizeof(cfgDescriptor), wLength));\r
- else if ((wValue & 0xF00) == 0x300) { // Return String Descriptor\r
- const char *strDescriptor = getStringDescriptor(wValue & 0xff);\r
- if (strDescriptor != NULL) {\r
- AT91F_USB_SendData(pUdp, strDescriptor, MIN(strDescriptor[0], wLength));\r
- } else {\r
- AT91F_USB_SendStall(pUdp);\r
- }\r
- }\r
- else\r
- AT91F_USB_SendStall(pUdp);\r
- break;\r
- case STD_SET_ADDRESS:\r
- AT91F_USB_SendZlp(pUdp);\r
- pUdp->UDP_FADDR = (AT91C_UDP_FEN | wValue);\r
- pUdp->UDP_GLBSTATE = (wValue) ? AT91C_UDP_FADDEN : 0;\r
- break;\r
- case STD_SET_CONFIGURATION:\r
- btConfiguration = wValue;\r
- AT91F_USB_SendZlp(pUdp);\r
- pUdp->UDP_GLBSTATE = (wValue) ? AT91C_UDP_CONFG : AT91C_UDP_FADDEN;\r
- pUdp->UDP_CSR[AT91C_EP_OUT] = (wValue) ? (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_OUT) : 0;\r
- pUdp->UDP_CSR[AT91C_EP_IN] = (wValue) ? (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_IN) : 0;\r
- pUdp->UDP_CSR[AT91C_EP_NOTIFY] = (wValue) ? (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_INT_IN) : 0;\r
- break;\r
- case STD_GET_CONFIGURATION:\r
- AT91F_USB_SendData(pUdp, (char *) &(btConfiguration), sizeof(btConfiguration));\r
- break;\r
- case STD_GET_STATUS_ZERO:\r
- wStatus = 0; // Device is Bus powered, remote wakeup disabled\r
- AT91F_USB_SendData(pUdp, (char *) &wStatus, sizeof(wStatus));\r
- break;\r
- case STD_GET_STATUS_INTERFACE:\r
- wStatus = 0; // reserved for future use\r
- AT91F_USB_SendData(pUdp, (char *) &wStatus, sizeof(wStatus));\r
- break;\r
- case STD_GET_STATUS_ENDPOINT:\r
- wStatus = 0;\r
- wIndex &= 0x0F;\r
- if ((pUdp->UDP_GLBSTATE & AT91C_UDP_CONFG) && (wIndex <= AT91C_EP_NOTIFY)) {\r
- wStatus = (pUdp->UDP_CSR[wIndex] & AT91C_UDP_EPEDS) ? 0 : 1;\r
- AT91F_USB_SendData(pUdp, (char *) &wStatus, sizeof(wStatus));\r
- }\r
- else if ((pUdp->UDP_GLBSTATE & AT91C_UDP_FADDEN) && (wIndex == AT91C_EP_CONTROL)) {\r
- wStatus = (pUdp->UDP_CSR[wIndex] & AT91C_UDP_EPEDS) ? 0 : 1;\r
- AT91F_USB_SendData(pUdp, (char *) &wStatus, sizeof(wStatus));\r
- }\r
- else\r
- AT91F_USB_SendStall(pUdp);\r
- break;\r
- case STD_SET_FEATURE_ZERO:\r
- AT91F_USB_SendStall(pUdp);\r
- break;\r
- case STD_SET_FEATURE_INTERFACE:\r
- AT91F_USB_SendZlp(pUdp);\r
- break;\r
- case STD_SET_FEATURE_ENDPOINT:\r
- wIndex &= 0x0F;\r
- if ((wValue == 0) && (wIndex >= AT91C_EP_OUT) && (wIndex <= AT91C_EP_NOTIFY)) {\r
- pUdp->UDP_CSR[wIndex] = 0;\r
- AT91F_USB_SendZlp(pUdp);\r
- }\r
- else\r
- AT91F_USB_SendStall(pUdp);\r
- break;\r
- case STD_CLEAR_FEATURE_ZERO:\r
- AT91F_USB_SendStall(pUdp);\r
- break;\r
- case STD_CLEAR_FEATURE_INTERFACE:\r
- AT91F_USB_SendZlp(pUdp);\r
- break;\r
- case STD_CLEAR_FEATURE_ENDPOINT:\r
- wIndex &= 0x0F;\r
- if ((wValue == 0) && (wIndex >= AT91C_EP_OUT) && (wIndex <= AT91C_EP_NOTIFY)) {\r
- if (wIndex == AT91C_EP_OUT)\r
- pUdp->UDP_CSR[AT91C_EP_OUT] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_OUT);\r
- else if (wIndex == AT91C_EP_IN)\r
- pUdp->UDP_CSR[AT91C_EP_IN] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_IN);\r
- else if (wIndex == AT91C_EP_NOTIFY)\r
- pUdp->UDP_CSR[AT91C_EP_NOTIFY] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_INT_IN);\r
- AT91F_USB_SendZlp(pUdp);\r
- }\r
- else\r
- AT91F_USB_SendStall(pUdp);\r
- break;\r
-\r
- // handle CDC class requests\r
- case SET_LINE_CODING:\r
- while ( !(pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_RX_DATA_BK0) );\r
- UDP_CLEAR_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_RX_DATA_BK0);\r
- AT91F_USB_SendZlp(pUdp);\r
- break;\r
- case GET_LINE_CODING:\r
- AT91F_USB_SendData(pUdp, (char *) &line, MIN(sizeof(line), wLength));\r
- break;\r
- case SET_CONTROL_LINE_STATE:\r
- btConnection = wValue;\r
- AT91F_USB_SendZlp(pUdp);\r
- break;\r
- default:\r
- AT91F_USB_SendStall(pUdp);\r
- break;\r
- }\r
-}\r
projects / proxmark3-svn / commitdiff