*/\r
\r
#include "usb_cdc.h"\r
+\r
+#include <stddef.h>\r
+#include <stdint.h>\r
+#include <stdbool.h>\r
+\r
+#include "common.h"\r
+#include "at91sam7s512.h"\r
#include "config_gpio.h"\r
\r
-#define MIN(a, b) (((a) < (b)) ? (a) : (b))\r
-#define MAX(a, b) (((a) > (b)) ? (a) : (b))\r
-#define AT91C_EP_IN_SIZE 0x40\r
+#define AT91C_EP_CONTROL 0\r
#define AT91C_EP_OUT 1\r
-#define AT91C_EP_OUT_SIZE 0x40\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
-const char devDescriptor[] = {\r
+\r
+static const char devDescriptor[] = {\r
/* Device descriptor */\r
0x12, // bLength\r
0x01, // bDescriptorType\r
- 0x10,0x01, // Complies with USB Spec. Release (0110h = release 1.10)\r
- 0x02, // bDeviceClass: CDC class code\r
- 0x00, // bDeviceSubclass: CDC class sub code\r
- 0x00, // bDeviceProtocol: CDC Device protocol\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
- 0x2d,0x2d, // Vendor ID (--)\r
- 0x4d,0x50, // Product ID (PM), transmitted in reverse\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
- 0x01, // iManufacturer // 0x01\r
- 0x00, // iProduct\r
- 0x00, // SerialNumber\r
+ STR_MANUFACTURER, // iManufacturer\r
+ STR_PRODUCT, // iProduct\r
+ 0x00, // iSerialNumber\r
0x01 // bNumConfigs\r
};\r
\r
-const char cfgDescriptor[] = {\r
+\r
+static const char cfgDescriptor[] = {\r
/* ============== CONFIGURATION 1 =========== */\r
/* Configuration 1 descriptor */\r
0x09, // CbLength\r
0x02, // CbNumInterfaces\r
0x01, // CbConfigurationValue\r
0x00, // CiConfiguration\r
- 0xC0, // CbmAttributes 0xA0\r
- 0x00, // CMaxPower\r
+ 0x80, // CbmAttributes (Bus Powered)\r
+ 0x4B, // CMaxPower (150mA max current drawn from bus)\r
\r
- /* Communication Class Interface Descriptor Requirement */\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\r
- 0x02, // bInterfaceSubclass\r
- 0x00, // bInterfaceProtocol\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 Func Desc\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: ACM Func Desc\r
- 0x00, // bmCapabilities\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 Func Desc\r
- 0x00, // bMasterInterface: Communication Class Interface\r
- 0x01, // bSlaveInterface0: Data Class Interface\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 Func Desc\r
- 0x00, // bmCapabilities: D1 + D0\r
- 0x01, // bDataInterface: Data Class Interface 1\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\r
+ 0x83, // bEndpointAddress: Endpoint 03 - IN\r
+ 0x03, // bmAttributes: INT\r
+ 0x08, // wMaxPacketSize: 8\r
0x00,\r
0xFF, // bInterval\r
\r
- /* Data Class Interface Descriptor Requirement */\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\r
- 0x00, // bInterfaceSubclass\r
- 0x00, // bInterfaceProtocol\r
+ 0x0A, // bInterfaceClass: Data Interface Class\r
+ 0x00, // bInterfaceSubclass: not used\r
+ 0x00, // bInterfaceProtocol: No class specific protocol required)\r
0x00, // iInterface\r
\r
- /* First alternate setting */\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
+ 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
+ 0x82, // bEndpointAddress: Endpoint 02 - IN\r
+ 0x02, // bmAttributes: BULK\r
AT91C_EP_IN_SIZE, // wMaxPacketSize\r
0x00,\r
0x00 // bInterval\r
};\r
\r
-const char strDescriptor[] = {\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
+static const char StrDescLanguageCodes[] = {\r
+ 4, // Length\r
+ 0x03, // Type is string\r
+ 0x09, 0x04 // supported language Code 0 = 0x0409 (English)\r
+};\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
+\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
\r
-/* USB standard request code */\r
+static const char* getStringDescriptor(uint8_t idx) {\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
+\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 | AT91C_UDP_STALLSENT | AT91C_UDP_RXSETUP | AT91C_UDP_TXCOMP)\r
+\r
+\r
+// Clear flags in the UDP_CSR register\r
+#define UDP_CLEAR_EP_FLAGS(endpoint, flags) { \\r
+ volatile unsigned int reg; \\r
+ reg = AT91C_BASE_UDP->UDP_CSR[(endpoint)]; \\r
+ reg |= REG_NO_EFFECT_1_ALL; \\r
+ reg &= ~(flags); \\r
+ AT91C_BASE_UDP->UDP_CSR[(endpoint)] = reg; \\r
+}\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 = AT91C_BASE_UDP->UDP_CSR[(endpoint)]; \\r
+ reg |= REG_NO_EFFECT_1_ALL; \\r
+ reg |= (flags); \\r
+ AT91C_BASE_UDP->UDP_CSR[(endpoint)] = reg; \\r
+}\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
#define SET_LINE_CODING 0x2021\r
#define SET_CONTROL_LINE_STATE 0x2221\r
\r
+\r
typedef struct {\r
unsigned int dwDTERRate;\r
char bCharFormat;\r
char bDataBits;\r
} AT91S_CDC_LINE_CODING, *AT91PS_CDC_LINE_CODING;\r
\r
-AT91S_CDC_LINE_CODING line = {\r
+\r
+static AT91S_CDC_LINE_CODING line = {\r
115200, // baudrate\r
0, // 1 Stop Bit\r
0, // None Parity\r
8}; // 8 Data bits\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
+static uint8_t btConfiguration = 0;\r
+static uint8_t btConnection = 0;\r
+static uint8_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
+ // Disconnect the USB device\r
+ AT91C_BASE_PIOA->PIO_ODR = GPIO_USB_PU;\r
+\r
+ // Clear all lingering interrupts\r
+ if (AT91C_BASE_UDP->UDP_ISR & AT91C_UDP_ENDBUSRES) {\r
+ AT91C_BASE_UDP->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
+ // Set the PLL USB Divider\r
+ AT91C_BASE_CKGR->CKGR_PLLR |= AT91C_CKGR_USBDIV_1 ;\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[0] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_CTRL);\r
- }\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
+ // 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
-bool usb_poll()\r
-{\r
- if (!usb_check()) return false;\r
- return (pUdp->UDP_CSR[AT91C_EP_OUT] & btReceiveBank);\r
-}\r
+ // Clear for set the Pullup resistor\r
+ AT91C_BASE_PIOA->PIO_CODR = GPIO_USB_PU;\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
+ // Disconnect and reconnect USB controller for 100ms\r
+ usb_disable();\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
- pUdp->UDP_CSR[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
+ // Wait for a short while\r
+ for (volatile size_t i = 0; i < 0x100000; i++);\r
\r
- btReceiveBank = bank;\r
- return nbBytesRcv;\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_write\r
-//* \brief Send through endpoint 2\r
+//* \fn AT91F_USB_SendZlp\r
+//* \brief Send zero length packet through an endpoint\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-1);\r
- length -= cpt;\r
- while (cpt--) pUdp->UDP_FDR[AT91C_EP_IN] = *data++;\r
- pUdp->UDP_CSR[AT91C_EP_IN] |= AT91C_UDP_TXPKTRDY;\r
-\r
- while (length) {\r
- // Fill the second bank\r
- cpt = MIN(length, AT91C_EP_IN_SIZE-1);\r
- length -= cpt;\r
- while (cpt--) pUdp->UDP_FDR[AT91C_EP_IN] = *data++;\r
- // Wait for the the first bank to be sent\r
- while (!(pUdp->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP)) {\r
- if (!usb_check()) return length;\r
- }\r
- pUdp->UDP_CSR[AT91C_EP_IN] &= ~(AT91C_UDP_TXCOMP);\r
- while (pUdp->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP);\r
- pUdp->UDP_CSR[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
- pUdp->UDP_CSR[AT91C_EP_IN] &= ~(AT91C_UDP_TXCOMP);\r
- while (pUdp->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP);\r
-\r
- return length;\r
+static void AT91F_USB_SendZlp(uint8_t endpoint) {\r
+ UDP_SET_EP_FLAGS(endpoint, AT91C_UDP_TXPKTRDY);\r
+ while (!(AT91C_BASE_UDP->UDP_CSR[endpoint] & AT91C_UDP_TXCOMP))\r
+ /* wait */;\r
+ UDP_CLEAR_EP_FLAGS(endpoint, AT91C_UDP_TXCOMP);\r
+ while (AT91C_BASE_UDP->UDP_CSR[endpoint] & AT91C_UDP_TXCOMP)\r
+ /* wait */;\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
+static void AT91F_USB_SendData(const char *pData, uint32_t length) {\r
uint32_t cpt = 0;\r
AT91_REG csr;\r
\r
length -= cpt;\r
\r
while (cpt--)\r
- pUdp->UDP_FDR[0] = *pData++;\r
+ AT91C_BASE_UDP->UDP_FDR[0] = *pData++;\r
\r
- if (pUdp->UDP_CSR[0] & AT91C_UDP_TXCOMP) {\r
- pUdp->UDP_CSR[0] &= ~(AT91C_UDP_TXCOMP);\r
- while (pUdp->UDP_CSR[0] & AT91C_UDP_TXCOMP);\r
+ if (AT91C_BASE_UDP->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_TXCOMP) {\r
+ UDP_CLEAR_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_TXCOMP);\r
+ while (AT91C_BASE_UDP->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_TXCOMP)\r
+ /* wait */;\r
}\r
\r
- pUdp->UDP_CSR[0] |= AT91C_UDP_TXPKTRDY;\r
+ UDP_SET_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_TXPKTRDY);\r
do {\r
- csr = pUdp->UDP_CSR[0];\r
+ csr = AT91C_BASE_UDP->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
- pUdp->UDP_CSR[0] &= ~(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
+ } while (!(csr & AT91C_UDP_TXCOMP));\r
\r
} while (length);\r
\r
- if (pUdp->UDP_CSR[0] & AT91C_UDP_TXCOMP) {\r
- pUdp->UDP_CSR[0] &= ~(AT91C_UDP_TXCOMP);\r
- while (pUdp->UDP_CSR[0] & AT91C_UDP_TXCOMP);\r
+ if (AT91C_BASE_UDP->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_TXCOMP) {\r
+ UDP_CLEAR_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_TXCOMP);\r
+ while (AT91C_BASE_UDP->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_TXCOMP)\r
+ /* wait */;\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
- pUdp->UDP_CSR[0] |= AT91C_UDP_TXPKTRDY;\r
- while ( !(pUdp->UDP_CSR[0] & AT91C_UDP_TXCOMP) );\r
- pUdp->UDP_CSR[0] &= ~(AT91C_UDP_TXCOMP);\r
- while (pUdp->UDP_CSR[0] & AT91C_UDP_TXCOMP);\r
-}\r
\r
//*----------------------------------------------------------------------------\r
//* \fn AT91F_USB_SendStall\r
//* \brief Stall the control endpoint\r
//*----------------------------------------------------------------------------\r
-void AT91F_USB_SendStall(AT91PS_UDP pUdp) {\r
- pUdp->UDP_CSR[0] |= AT91C_UDP_FORCESTALL;\r
- while ( !(pUdp->UDP_CSR[0] & AT91C_UDP_ISOERROR) );\r
- pUdp->UDP_CSR[0] &= ~(AT91C_UDP_FORCESTALL | AT91C_UDP_ISOERROR);\r
- while (pUdp->UDP_CSR[0] & (AT91C_UDP_FORCESTALL | AT91C_UDP_ISOERROR));\r
+static void AT91F_USB_SendStall(void) {\r
+ UDP_SET_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_FORCESTALL);\r
+ while (!(AT91C_BASE_UDP->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_ISOERROR))\r
+ /* wait */;\r
+ UDP_CLEAR_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_FORCESTALL | AT91C_UDP_ISOERROR);\r
+ while (AT91C_BASE_UDP->UDP_CSR[AT91C_EP_CONTROL] & (AT91C_UDP_FORCESTALL | AT91C_UDP_ISOERROR))\r
+ /* wait */;\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
+static void AT91F_CDC_Enumerate() {\r
+ uint8_t bmRequestType, bRequest;\r
uint16_t wValue, wIndex, wLength, wStatus;\r
\r
- if ( !(pUdp->UDP_CSR[0] & AT91C_UDP_RXSETUP) )\r
+ if (!(AT91C_BASE_UDP->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_RXSETUP))\r
return;\r
\r
- bmRequestType = pUdp->UDP_FDR[0];\r
- bRequest = pUdp->UDP_FDR[0];\r
- wValue = (pUdp->UDP_FDR[0] & 0xFF);\r
- wValue |= (pUdp->UDP_FDR[0] << 8);\r
- wIndex = (pUdp->UDP_FDR[0] & 0xFF);\r
- wIndex |= (pUdp->UDP_FDR[0] << 8);\r
- wLength = (pUdp->UDP_FDR[0] & 0xFF);\r
- wLength |= (pUdp->UDP_FDR[0] << 8);\r
-\r
- if (bmRequestType & 0x80) {\r
- pUdp->UDP_CSR[0] |= AT91C_UDP_DIR;\r
- while ( !(pUdp->UDP_CSR[0] & AT91C_UDP_DIR) );\r
+ bmRequestType = AT91C_BASE_UDP->UDP_FDR[AT91C_EP_CONTROL];\r
+ bRequest = AT91C_BASE_UDP->UDP_FDR[AT91C_EP_CONTROL];\r
+ wValue = (AT91C_BASE_UDP->UDP_FDR[AT91C_EP_CONTROL] & 0xFF);\r
+ wValue |= (AT91C_BASE_UDP->UDP_FDR[AT91C_EP_CONTROL] << 8);\r
+ wIndex = (AT91C_BASE_UDP->UDP_FDR[AT91C_EP_CONTROL] & 0xFF);\r
+ wIndex |= (AT91C_BASE_UDP->UDP_FDR[AT91C_EP_CONTROL] << 8);\r
+ wLength = (AT91C_BASE_UDP->UDP_FDR[AT91C_EP_CONTROL] & 0xFF);\r
+ wLength |= (AT91C_BASE_UDP->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 (!(AT91C_BASE_UDP->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_DIR))\r
+ /* wait */;\r
}\r
- pUdp->UDP_CSR[0] &= ~AT91C_UDP_RXSETUP;\r
- while ( (pUdp->UDP_CSR[0] & AT91C_UDP_RXSETUP) );\r
+ UDP_CLEAR_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_RXSETUP);\r
+ while (AT91C_BASE_UDP->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_RXSETUP)\r
+ /* wait */;\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
+ AT91F_USB_SendData(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 & 0x300) == 0x300) // Return String Descriptor\r
- AT91F_USB_SendData(pUdp, strDescriptor, MIN(sizeof(strDescriptor), wLength));\r
+ AT91F_USB_SendData(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(strDescriptor, MIN(strDescriptor[0], wLength));\r
+ } else {\r
+ AT91F_USB_SendStall();\r
+ }\r
+ }\r
else\r
- AT91F_USB_SendStall(pUdp);\r
+ AT91F_USB_SendStall();\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
+ AT91F_USB_SendZlp(AT91C_EP_CONTROL);\r
+ AT91C_BASE_UDP->UDP_FADDR = (AT91C_UDP_FEN | wValue);\r
+ AT91C_BASE_UDP->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[1] = (wValue) ? (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_OUT) : 0;\r
- pUdp->UDP_CSR[2] = (wValue) ? (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_IN) : 0;\r
- pUdp->UDP_CSR[3] = (wValue) ? (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_INT_IN) : 0;\r
+ AT91F_USB_SendZlp(AT91C_EP_CONTROL);\r
+ AT91C_BASE_UDP->UDP_GLBSTATE = (wValue) ? AT91C_UDP_CONFG : AT91C_UDP_FADDEN;\r
+ AT91C_BASE_UDP->UDP_CSR[AT91C_EP_OUT] = (wValue) ? (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_OUT) : 0;\r
+ AT91C_BASE_UDP->UDP_CSR[AT91C_EP_IN] = (wValue) ? (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_IN) : 0;\r
+ AT91C_BASE_UDP->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
+ AT91F_USB_SendData((char *) &(btConfiguration), sizeof(btConfiguration));\r
break;\r
case STD_GET_STATUS_ZERO:\r
- wStatus = 0;\r
- AT91F_USB_SendData(pUdp, (char *) &wStatus, sizeof(wStatus));\r
+ wStatus = 0; // Device is Bus powered, remote wakeup disabled\r
+ AT91F_USB_SendData((char *) &wStatus, sizeof(wStatus));\r
break;\r
case STD_GET_STATUS_INTERFACE:\r
- wStatus = 0;\r
- AT91F_USB_SendData(pUdp, (char *) &wStatus, sizeof(wStatus));\r
+ wStatus = 0; // reserved for future use\r
+ AT91F_USB_SendData((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 <= 3)) {\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 == 0)) {\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
+ if ((AT91C_BASE_UDP->UDP_GLBSTATE & AT91C_UDP_CONFG) && (wIndex <= AT91C_EP_NOTIFY)) {\r
+ wStatus = (AT91C_BASE_UDP->UDP_CSR[wIndex] & AT91C_UDP_EPEDS) ? 0 : 1;\r
+ AT91F_USB_SendData((char *) &wStatus, sizeof(wStatus));\r
+ } else if ((AT91C_BASE_UDP->UDP_GLBSTATE & AT91C_UDP_FADDEN) && (wIndex == AT91C_EP_CONTROL)) {\r
+ wStatus = (AT91C_BASE_UDP->UDP_CSR[wIndex] & AT91C_UDP_EPEDS) ? 0 : 1;\r
+ AT91F_USB_SendData((char *) &wStatus, sizeof(wStatus));\r
+ } else\r
+ AT91F_USB_SendStall();\r
break;\r
case STD_SET_FEATURE_ZERO:\r
- AT91F_USB_SendStall(pUdp);\r
- break;\r
+ AT91F_USB_SendStall();\r
+ break;\r
case STD_SET_FEATURE_INTERFACE:\r
- AT91F_USB_SendZlp(pUdp);\r
+ AT91F_USB_SendZlp(AT91C_EP_CONTROL);\r
break;\r
case STD_SET_FEATURE_ENDPOINT:\r
wIndex &= 0x0F;\r
- if ((wValue == 0) && wIndex && (wIndex <= 3)) {\r
- pUdp->UDP_CSR[wIndex] = 0;\r
- AT91F_USB_SendZlp(pUdp);\r
- }\r
- else\r
- AT91F_USB_SendStall(pUdp);\r
+ if ((wValue == 0) && (wIndex >= AT91C_EP_OUT) && (wIndex <= AT91C_EP_NOTIFY)) {\r
+ AT91C_BASE_UDP->UDP_CSR[wIndex] = 0;\r
+ AT91F_USB_SendZlp(AT91C_EP_CONTROL);\r
+ } else\r
+ AT91F_USB_SendStall();\r
break;\r
case STD_CLEAR_FEATURE_ZERO:\r
- AT91F_USB_SendStall(pUdp);\r
- break;\r
+ AT91F_USB_SendStall();\r
+ break;\r
case STD_CLEAR_FEATURE_INTERFACE:\r
- AT91F_USB_SendZlp(pUdp);\r
+ AT91F_USB_SendZlp(AT91C_EP_CONTROL);\r
break;\r
case STD_CLEAR_FEATURE_ENDPOINT:\r
wIndex &= 0x0F;\r
- if ((wValue == 0) && wIndex && (wIndex <= 3)) {\r
- if (wIndex == 1)\r
- pUdp->UDP_CSR[1] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_OUT);\r
- else if (wIndex == 2)\r
- pUdp->UDP_CSR[2] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_IN);\r
- else if (wIndex == 3)\r
- pUdp->UDP_CSR[3] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_ISO_IN);\r
- AT91F_USB_SendZlp(pUdp);\r
+ if ((wValue == 0) && (wIndex >= AT91C_EP_OUT) && (wIndex <= AT91C_EP_NOTIFY)) {\r
+ if (wIndex == AT91C_EP_OUT)\r
+ AT91C_BASE_UDP->UDP_CSR[AT91C_EP_OUT] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_OUT);\r
+ else if (wIndex == AT91C_EP_IN)\r
+ AT91C_BASE_UDP->UDP_CSR[AT91C_EP_IN] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_IN);\r
+ else if (wIndex == AT91C_EP_NOTIFY)\r
+ AT91C_BASE_UDP->UDP_CSR[AT91C_EP_NOTIFY] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_INT_IN);\r
+ AT91F_USB_SendZlp(AT91C_EP_CONTROL);\r
}\r
else\r
- AT91F_USB_SendStall(pUdp);\r
+ AT91F_USB_SendStall();\r
break;\r
\r
// handle CDC class requests\r
case SET_LINE_CODING:\r
- while ( !(pUdp->UDP_CSR[0] & AT91C_UDP_RX_DATA_BK0) );\r
- pUdp->UDP_CSR[0] &= ~(AT91C_UDP_RX_DATA_BK0);\r
- AT91F_USB_SendZlp(pUdp);\r
+ while (!(AT91C_BASE_UDP->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_RX_DATA_BK0))\r
+ /* wait */;\r
+ UDP_CLEAR_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_RX_DATA_BK0);\r
+ AT91F_USB_SendZlp(AT91C_EP_CONTROL);\r
break;\r
case GET_LINE_CODING:\r
- AT91F_USB_SendData(pUdp, (char *) &line, MIN(sizeof(line), wLength));\r
+ AT91F_USB_SendData((char *) &line, MIN(sizeof(line), wLength));\r
break;\r
case SET_CONTROL_LINE_STATE:\r
btConnection = wValue;\r
- AT91F_USB_SendZlp(pUdp);\r
+ AT91F_USB_SendZlp(AT91C_EP_CONTROL);\r
break;\r
default:\r
- AT91F_USB_SendStall(pUdp);\r
- break;\r
+ AT91F_USB_SendStall();\r
+ break;\r
+ }\r
+}\r
+\r
+\r
+//*----------------------------------------------------------------------------\r
+//* \fn usb_check\r
+//* \brief Test if the device is configured and handle enumeration\r
+//*----------------------------------------------------------------------------\r
+static bool usb_check() {\r
+ AT91_REG isr = AT91C_BASE_UDP->UDP_ISR;\r
+\r
+ if (isr & AT91C_UDP_ENDBUSRES) {\r
+ AT91C_BASE_UDP->UDP_ICR = AT91C_UDP_ENDBUSRES;\r
+ // reset all endpoints\r
+ AT91C_BASE_UDP->UDP_RSTEP = (unsigned int)-1;\r
+ AT91C_BASE_UDP->UDP_RSTEP = 0;\r
+ // Enable the function\r
+ AT91C_BASE_UDP->UDP_FADDR = AT91C_UDP_FEN;\r
+ // Configure endpoint 0\r
+ AT91C_BASE_UDP->UDP_CSR[AT91C_EP_CONTROL] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_CTRL);\r
+ } else if (isr & AT91C_UDP_EPINT0) {\r
+ AT91C_BASE_UDP->UDP_ICR = AT91C_UDP_EPINT0;\r
+ AT91F_CDC_Enumerate();\r
}\r
+ return (btConfiguration) ? true : false;\r
+}\r
+\r
+\r
+bool usb_poll() {\r
+ if (!usb_check()) return false;\r
+ return (AT91C_BASE_UDP->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
+ if (!usb_check()) return false;\r
+ if (!(AT91C_BASE_UDP->UDP_CSR[AT91C_EP_OUT] & btReceiveBank)) return false;\r
+ return (AT91C_BASE_UDP->UDP_CSR[AT91C_EP_OUT] >> 16) > 0;\r
+}\r
+\r
+\r
+//*----------------------------------------------------------------------------\r
+//* \fn usb_read\r
+//* \brief Read available data from Endpoint OUT\r
+//*----------------------------------------------------------------------------\r
+static uint32_t usb_read(uint8_t* data, size_t len) {\r
+ uint8_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 ( AT91C_BASE_UDP->UDP_CSR[AT91C_EP_OUT] & bank ) {\r
+ packetSize = MIN(AT91C_BASE_UDP->UDP_CSR[AT91C_EP_OUT] >> 16, len);\r
+ len -= packetSize;\r
+ while (packetSize--)\r
+ data[nbBytesRcv++] = AT91C_BASE_UDP->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
+static uint32_t usb_write(const uint8_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
+ AT91C_BASE_UDP->UDP_FDR[AT91C_EP_IN] = *data++;\r
+ }\r
+ UDP_SET_EP_FLAGS(AT91C_EP_IN, AT91C_UDP_TXPKTRDY);\r
+ while (!(AT91C_BASE_UDP->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXPKTRDY))\r
+ /* wait */;\r
+\r
+ while (length) {\r
+ // Fill the next bank\r
+ cpt = MIN(length, AT91C_EP_IN_SIZE);\r
+ length -= cpt;\r
+ while (cpt--) {\r
+ AT91C_BASE_UDP->UDP_FDR[AT91C_EP_IN] = *data++;\r
+ }\r
+ // Wait for the previous bank to be sent\r
+ while (!(AT91C_BASE_UDP->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP)) {\r
+ if (!usb_check()) return length;\r
+ }\r
+ UDP_SET_EP_FLAGS(AT91C_EP_IN, AT91C_UDP_TXPKTRDY);\r
+ while (!(AT91C_BASE_UDP->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXPKTRDY))\r
+ /* wait */;\r
+ UDP_CLEAR_EP_FLAGS(AT91C_EP_IN, AT91C_UDP_TXCOMP);\r
+ while (AT91C_BASE_UDP->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP)\r
+ /* wait */;\r
+ }\r
+\r
+ // Wait for the end of transfer\r
+ while (!(AT91C_BASE_UDP->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 (AT91C_BASE_UDP->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP)\r
+ /* wait */;\r
+\r
+ if (len % AT91C_EP_IN_SIZE == 0) { // need to send a zero length packet to complete the transfer\r
+ AT91F_USB_SendZlp(AT91C_EP_IN);\r
+ }\r
+\r
+ return length;\r
+}\r
+\r
+\r
+//***************************************************************************\r
+// Interface to the main program\r
+//***************************************************************************\r
+\r
+// The function to receive a command from the client via USB\r
+bool cmd_receive(UsbCommand* cmd) {\r
+\r
+ // Check if there is a usb packet available\r
+ if (!usb_poll())\r
+ return false;\r
+\r
+ // Try to retrieve the available command frame\r
+ size_t rxlen = usb_read((uint8_t*)cmd, sizeof(UsbCommand));\r
+\r
+ // Check if the transfer was complete\r
+ if (rxlen != sizeof(UsbCommand))\r
+ return false;\r
+\r
+ // Received command successfully\r
+ return true;\r
+}\r
+\r
+\r
+// The function to send a response to the client via USB\r
+bool cmd_send(uint16_t cmd, uint32_t arg0, uint32_t arg1, uint32_t arg2, void* data, uint16_t datalen) {\r
+\r
+ UsbResponse txcmd;\r
+\r
+ // Compose the outgoing response frame\r
+ txcmd.cmd = cmd | CMD_VARIABLE_SIZE_FLAG;\r
+ txcmd.arg[0] = arg0;\r
+ txcmd.arg[1] = arg1;\r
+ txcmd.arg[2] = arg2;\r
+\r
+ // Add the (optional) content to the frame, with a maximum size of USB_CMD_DATA_SIZE\r
+ if (data) {\r
+ datalen = MIN(datalen, USB_CMD_DATA_SIZE);\r
+ for (uint16_t i = 0; i < datalen; i++) {\r
+ txcmd.d.asBytes[i] = ((uint8_t*)data)[i];\r
+ }\r
+ txcmd.datalen = datalen;\r
+ } else {\r
+ txcmd.datalen = 0;\r
+ }\r
+\r
+ // Send frame and make sure all bytes are transmitted\r
+ size_t tx_size = offsetof(UsbResponse, d) + datalen;\r
+ if (usb_write((uint8_t*)&txcmd, tx_size) != 0) return false;\r
+\r
+ return true;\r
+}\r
+\r
+\r
+// For compatibility only: legacy function to send a response with fixed size to the client via USB\r
+bool cmd_send_old(uint16_t cmd, uint32_t arg0, uint32_t arg1, uint32_t arg2, void* data, uint16_t datalen) {\r
+\r
+ UsbCommand txcmd;\r
+\r
+ // Compose the outgoing response frame\r
+ txcmd.cmd = cmd;\r
+ txcmd.arg[0] = arg0;\r
+ txcmd.arg[1] = arg1;\r
+ txcmd.arg[2] = arg2;\r
+\r
+ // Add the (optional) content to the frame, with a maximum size of USB_CMD_DATA_SIZE\r
+ if (data) {\r
+ datalen = MIN(datalen, USB_CMD_DATA_SIZE);\r
+ for (uint16_t i = 0; i < datalen; i++) {\r
+ txcmd.d.asBytes[i] = ((uint8_t*)data)[i];\r
+ }\r
+ }\r
+\r
+ // Send frame and make sure all bytes are transmitted\r
+ if (usb_write((uint8_t*)&txcmd, sizeof(UsbCommand)) != 0) return false;\r
+\r
+ return true;\r
+}\r
+\r
projects / proxmark3-svn / blobdiff