| 1 | //----------------------------------------------------------------------------- |
| 2 | // Jonathan Westhues, split Aug 14 2005 |
| 3 | // |
| 4 | // This code is licensed to you under the terms of the GNU GPL, version 2 or, |
| 5 | // at your option, any later version. See the LICENSE.txt file for the text of |
| 6 | // the license. |
| 7 | //----------------------------------------------------------------------------- |
| 8 | // The common USB driver used for both the bootloader and the application. |
| 9 | //----------------------------------------------------------------------------- |
| 10 | |
| 11 | #include "proxmark3.h" |
| 12 | |
| 13 | #define min(a, b) (((a) > (b)) ? (b) : (a)) |
| 14 | |
| 15 | #define USB_REPORT_PACKET_SIZE 64 |
| 16 | |
| 17 | typedef struct PACKED { |
| 18 | uint8_t bmRequestType; |
| 19 | uint8_t bRequest; |
| 20 | uint16_t wValue; |
| 21 | uint16_t wIndex; |
| 22 | uint16_t wLength; |
| 23 | } UsbSetupData; |
| 24 | |
| 25 | #define USB_REQUEST_GET_STATUS 0 |
| 26 | #define USB_REQUEST_CLEAR_FEATURE 1 |
| 27 | #define USB_REQUEST_SET_FEATURE 3 |
| 28 | #define USB_REQUEST_SET_ADDRESS 5 |
| 29 | #define USB_REQUEST_GET_DESCRIPTOR 6 |
| 30 | #define USB_REQUEST_SET_DESCRIPTOR 7 |
| 31 | #define USB_REQUEST_GET_CONFIGURATION 8 |
| 32 | #define USB_REQUEST_SET_CONFIGURATION 9 |
| 33 | #define USB_REQUEST_GET_INTERFACE 10 |
| 34 | #define USB_REQUEST_SET_INTERFACE 11 |
| 35 | #define USB_REQUEST_SYNC_FRAME 12 |
| 36 | |
| 37 | #define USB_DESCRIPTOR_TYPE_DEVICE 1 |
| 38 | #define USB_DESCRIPTOR_TYPE_CONFIGURATION 2 |
| 39 | #define USB_DESCRIPTOR_TYPE_STRING 3 |
| 40 | #define USB_DESCRIPTOR_TYPE_INTERFACE 4 |
| 41 | #define USB_DESCRIPTOR_TYPE_ENDPOINT 5 |
| 42 | #define USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER 6 |
| 43 | #define USB_DESCRIPTOR_TYPE_OTHER_SPEED_CONF 7 |
| 44 | #define USB_DESCRIPTOR_TYPE_INTERFACE_POWER 8 |
| 45 | #define USB_DESCRIPTOR_TYPE_HID 0x21 |
| 46 | #define USB_DESCRIPTOR_TYPE_HID_REPORT 0x22 |
| 47 | |
| 48 | #define USB_DEVICE_CLASS_HID 0x03 |
| 49 | |
| 50 | static const uint8_t HidReportDescriptor[] = { |
| 51 | 0x06,0xA0,0xFF, // Usage Page (vendor defined) FFA0 |
| 52 | 0x09,0x01, // Usage (vendor defined) |
| 53 | 0xA1,0x01, // Collection (Application) |
| 54 | 0x09,0x02, // Usage (vendor defined) |
| 55 | 0xA1,0x00, // Collection (Physical) |
| 56 | 0x06,0xA1,0xFF, // Usage Page (vendor defined) |
| 57 | |
| 58 | //The,input report |
| 59 | 0x09,0x03, // usage - vendor defined |
| 60 | 0x09,0x04, // usage - vendor defined |
| 61 | 0x15,0x80, // Logical Minimum (-128) |
| 62 | 0x25,0x7F, // Logical Maximum (127) |
| 63 | 0x35,0x00, // Physical Minimum (0) |
| 64 | 0x45,0xFF, // Physical Maximum (255) |
| 65 | 0x75,0x08, // Report Size (8) (bits) |
| 66 | 0x95,0x40, // Report Count (64) (fields) |
| 67 | 0x81,0x02, // Input (Data,Variable,Absolute) |
| 68 | |
| 69 | //The,output report |
| 70 | 0x09,0x05, // usage - vendor defined |
| 71 | 0x09,0x06, // usage - vendor defined |
| 72 | 0x15,0x80, // Logical Minimum (-128) |
| 73 | 0x25,0x7F, // Logical Maximum (127) |
| 74 | 0x35,0x00, // Physical Minimum (0) |
| 75 | 0x45,0xFF, // Physical Maximum (255) |
| 76 | 0x75,0x08, // Report Size (8) (bits) |
| 77 | 0x95,0x40, // Report Count (64) (fields) |
| 78 | 0x91,0x02, // Output (Data,Variable,Absolute) |
| 79 | |
| 80 | 0xC0, // End Collection |
| 81 | |
| 82 | 0xC0, // End Collection |
| 83 | }; |
| 84 | |
| 85 | static const uint8_t DeviceDescriptor[] = { |
| 86 | 0x12, // Descriptor length (18 bytes) |
| 87 | 0x01, // Descriptor type (Device) |
| 88 | 0x10,0x01, // Complies with USB Spec. Release (0110h = release 1.10) |
| 89 | 0x00, // Class code (0) |
| 90 | 0x00, // Subclass code (0) |
| 91 | 0x00, // Protocol (No specific protocol) |
| 92 | 0x08, // Maximum packet size for Endpoint 0 (8 bytes) |
| 93 | 0xc4,0x9a, // Vendor ID (random numbers) |
| 94 | 0x8f,0x4b, // Product ID (random numbers) |
| 95 | 0x01,0x00, // Device release number (0001) |
| 96 | 0x01, // Manufacturer string descriptor index |
| 97 | 0x02, // Product string descriptor index |
| 98 | 0x03, // Serial Number string descriptor index |
| 99 | 0x01, // Number of possible configurations (1) |
| 100 | }; |
| 101 | |
| 102 | static const uint8_t ConfigurationDescriptor[] = { |
| 103 | 0x09, // Descriptor length (9 bytes) |
| 104 | 0x02, // Descriptor type (Configuration) |
| 105 | 0x29,0x00, // Total data length (41 bytes) |
| 106 | 0x01, // Interface supported (1) |
| 107 | 0x01, // Configuration value (1) |
| 108 | 0x00, // Index of string descriptor (None) |
| 109 | 0x80, // Configuration (Bus powered) |
| 110 | 250, // Maximum power consumption (500mA) |
| 111 | |
| 112 | //interface |
| 113 | 0x09, // Descriptor length (9 bytes) |
| 114 | 0x04, // Descriptor type (Interface) |
| 115 | 0x00, // Number of interface (0) |
| 116 | 0x00, // Alternate setting (0) |
| 117 | 0x02, // Number of interface endpoint (2) |
| 118 | 0x03, // Class code (HID) |
| 119 | 0x00, // Subclass code () |
| 120 | 0x00, // Protocol code () |
| 121 | 0x00, // Index of string() |
| 122 | |
| 123 | // class |
| 124 | 0x09, // Descriptor length (9 bytes) |
| 125 | 0x21, // Descriptor type (HID) |
| 126 | 0x00,0x01, // HID class release number (1.00) |
| 127 | 0x00, // Localized country code (None) |
| 128 | 0x01, // # of HID class dscrptr to follow (1) |
| 129 | 0x22, // Report descriptor type (HID) |
| 130 | // Total length of report descriptor |
| 131 | sizeof(HidReportDescriptor),0x00, |
| 132 | |
| 133 | // endpoint 1 |
| 134 | 0x07, // Descriptor length (7 bytes) |
| 135 | 0x05, // Descriptor type (Endpoint) |
| 136 | 0x01, // Encoded address (Respond to OUT) |
| 137 | 0x03, // Endpoint attribute (Interrupt transfer) |
| 138 | 0x08,0x00, // Maximum packet size (8 bytes) |
| 139 | 0x01, // Polling interval (1 ms) |
| 140 | |
| 141 | // endpoint 2 |
| 142 | 0x07, // Descriptor length (7 bytes) |
| 143 | 0x05, // Descriptor type (Endpoint) |
| 144 | 0x82, // Encoded address (Respond to IN) |
| 145 | 0x03, // Endpoint attribute (Interrupt transfer) |
| 146 | 0x08,0x00, // Maximum packet size (8 bytes) |
| 147 | 0x01, // Polling interval (1 ms) |
| 148 | }; |
| 149 | |
| 150 | static const uint8_t StringDescriptor0[] = { |
| 151 | 0x04, // Length |
| 152 | 0x03, // Type is string |
| 153 | 0x09, // English |
| 154 | 0x04, // US |
| 155 | }; |
| 156 | |
| 157 | static const uint8_t StringDescriptor1[] = { |
| 158 | 24, // Length |
| 159 | 0x03, // Type is string |
| 160 | 'J', 0x00, |
| 161 | '.', 0x00, |
| 162 | ' ', 0x00, |
| 163 | 'W', 0x00, |
| 164 | 'e', 0x00, |
| 165 | 's', 0x00, |
| 166 | 't', 0x00, |
| 167 | 'h', 0x00, |
| 168 | 'u', 0x00, |
| 169 | 'e', 0x00, |
| 170 | 's', 0x00, |
| 171 | }; |
| 172 | |
| 173 | static const uint8_t StringDescriptor2[] = { |
| 174 | 54, // Length |
| 175 | 0x03, // Type is string |
| 176 | 'P', 0x00, |
| 177 | 'r', 0x00, |
| 178 | 'o', 0x00, |
| 179 | 'x', 0x00, |
| 180 | 'M', 0x00, |
| 181 | 'a', 0x00, |
| 182 | 'r', 0x00, |
| 183 | 'k', 0x00, |
| 184 | '-', 0x00, |
| 185 | '3', 0x00, |
| 186 | ' ', 0x00, |
| 187 | 'R', 0x00, |
| 188 | 'F', 0x00, |
| 189 | 'I', 0x00, |
| 190 | 'D', 0x00, |
| 191 | ' ', 0x00, |
| 192 | 'I', 0x00, |
| 193 | 'n', 0x00, |
| 194 | 's', 0x00, |
| 195 | 't', 0x00, |
| 196 | 'r', 0x00, |
| 197 | 'u', 0x00, |
| 198 | 'm', 0x00, |
| 199 | 'e', 0x00, |
| 200 | 'n', 0x00, |
| 201 | 't', 0x00, |
| 202 | }; |
| 203 | |
| 204 | // Serial Number |
| 205 | // TODO: Pick yours! Don't forget to modify the length, if needed. |
| 206 | static const uint8_t StringDescriptor3[] = { |
| 207 | 18, // Length |
| 208 | 0x03, // Type is string |
| 209 | 'C', 0x00, |
| 210 | 'h', 0x00, |
| 211 | 'a', 0x00, |
| 212 | 'n', 0x00, |
| 213 | 'g', 0x00, |
| 214 | 'e', 0x00, |
| 215 | 'M', 0x00, |
| 216 | 'e', 0x00, |
| 217 | }; |
| 218 | |
| 219 | static const uint8_t * const StringDescriptors[] = { |
| 220 | StringDescriptor0, |
| 221 | StringDescriptor1, |
| 222 | StringDescriptor2, |
| 223 | StringDescriptor3, |
| 224 | }; |
| 225 | |
| 226 | |
| 227 | static uint8_t UsbBuffer[64]; |
| 228 | static int UsbSoFarCount; |
| 229 | |
| 230 | static uint8_t CurrentConfiguration; |
| 231 | |
| 232 | static void UsbSendEp0(const uint8_t *data, int len) |
| 233 | { |
| 234 | int thisTime, i; |
| 235 | |
| 236 | do { |
| 237 | thisTime = min(len, 8); |
| 238 | len -= thisTime; |
| 239 | |
| 240 | for(i = 0; i < thisTime; i++) { |
| 241 | AT91C_BASE_UDP->UDP_FDR[0] = *data; |
| 242 | data++; |
| 243 | } |
| 244 | |
| 245 | if(AT91C_BASE_UDP->UDP_CSR[0] & AT91C_UDP_TXCOMP) { |
| 246 | AT91C_BASE_UDP->UDP_CSR[0] &= ~AT91C_UDP_TXCOMP; |
| 247 | while(AT91C_BASE_UDP->UDP_CSR[0] & AT91C_UDP_TXCOMP) |
| 248 | ; |
| 249 | } |
| 250 | |
| 251 | AT91C_BASE_UDP->UDP_CSR[0] |= AT91C_UDP_TXPKTRDY; |
| 252 | |
| 253 | do { |
| 254 | if(AT91C_BASE_UDP->UDP_CSR[0] & AT91C_UDP_RX_DATA_BK0) { |
| 255 | // This means that the host is trying to write to us, so |
| 256 | // abandon our write to them. |
| 257 | AT91C_BASE_UDP->UDP_CSR[0] &= ~AT91C_UDP_RX_DATA_BK0; |
| 258 | return; |
| 259 | } |
| 260 | } while(!(AT91C_BASE_UDP->UDP_CSR[0] & AT91C_UDP_TXCOMP)); |
| 261 | } while(len > 0); |
| 262 | |
| 263 | if(AT91C_BASE_UDP->UDP_CSR[0] & AT91C_UDP_TXCOMP) { |
| 264 | AT91C_BASE_UDP->UDP_CSR[0] &= ~AT91C_UDP_TXCOMP; |
| 265 | while(AT91C_BASE_UDP->UDP_CSR[0] & AT91C_UDP_TXCOMP) |
| 266 | ; |
| 267 | } |
| 268 | } |
| 269 | |
| 270 | static void UsbSendZeroLength(void) |
| 271 | { |
| 272 | AT91C_BASE_UDP->UDP_CSR[0] |= AT91C_UDP_TXPKTRDY; |
| 273 | |
| 274 | while(!(AT91C_BASE_UDP->UDP_CSR[0] & AT91C_UDP_TXCOMP)) |
| 275 | ; |
| 276 | |
| 277 | AT91C_BASE_UDP->UDP_CSR[0] &= ~AT91C_UDP_TXCOMP; |
| 278 | |
| 279 | while(AT91C_BASE_UDP->UDP_CSR[0] & AT91C_UDP_TXCOMP) |
| 280 | ; |
| 281 | } |
| 282 | |
| 283 | static void UsbSendStall(void) |
| 284 | { |
| 285 | AT91C_BASE_UDP->UDP_CSR[0] |= AT91C_UDP_FORCESTALL; |
| 286 | |
| 287 | while(!(AT91C_BASE_UDP->UDP_CSR[0] & AT91C_UDP_STALLSENT)) |
| 288 | ; |
| 289 | |
| 290 | AT91C_BASE_UDP->UDP_CSR[0] &= ~AT91C_UDP_STALLSENT; |
| 291 | |
| 292 | while(AT91C_BASE_UDP->UDP_CSR[0] & AT91C_UDP_STALLSENT) |
| 293 | ; |
| 294 | } |
| 295 | |
| 296 | static void HandleRxdSetupData(void) |
| 297 | { |
| 298 | int i; |
| 299 | UsbSetupData usd; |
| 300 | |
| 301 | for(i = 0; i < sizeof(usd); i++) { |
| 302 | ((uint8_t *)&usd)[i] = AT91C_BASE_UDP->UDP_FDR[0]; |
| 303 | } |
| 304 | |
| 305 | if(usd.bmRequestType & 0x80) { |
| 306 | AT91C_BASE_UDP->UDP_CSR[0] |= AT91C_UDP_DIR; |
| 307 | while(!(AT91C_BASE_UDP->UDP_CSR[0] & AT91C_UDP_DIR)) |
| 308 | ; |
| 309 | } |
| 310 | |
| 311 | AT91C_BASE_UDP->UDP_CSR[0] &= ~AT91C_UDP_RXSETUP; |
| 312 | while(AT91C_BASE_UDP->UDP_CSR[0] & AT91C_UDP_RXSETUP) |
| 313 | ; |
| 314 | |
| 315 | switch(usd.bRequest) { |
| 316 | case USB_REQUEST_GET_DESCRIPTOR: |
| 317 | if((usd.wValue >> 8) == USB_DESCRIPTOR_TYPE_DEVICE) { |
| 318 | UsbSendEp0((uint8_t *)&DeviceDescriptor, |
| 319 | min(sizeof(DeviceDescriptor), usd.wLength)); |
| 320 | } else if((usd.wValue >> 8) == USB_DESCRIPTOR_TYPE_CONFIGURATION) { |
| 321 | UsbSendEp0((uint8_t *)&ConfigurationDescriptor, |
| 322 | min(sizeof(ConfigurationDescriptor), usd.wLength)); |
| 323 | } else if((usd.wValue >> 8) == USB_DESCRIPTOR_TYPE_STRING) { |
| 324 | const uint8_t *s = StringDescriptors[usd.wValue & 0xff]; |
| 325 | UsbSendEp0(s, min(s[0], usd.wLength)); |
| 326 | } else if((usd.wValue >> 8) == USB_DESCRIPTOR_TYPE_HID_REPORT) { |
| 327 | UsbSendEp0((uint8_t *)&HidReportDescriptor, |
| 328 | min(sizeof(HidReportDescriptor), usd.wLength)); |
| 329 | } else { |
| 330 | *((uint32_t *)0x00200000) = usd.wValue; |
| 331 | } |
| 332 | break; |
| 333 | |
| 334 | case USB_REQUEST_SET_ADDRESS: |
| 335 | UsbSendZeroLength(); |
| 336 | AT91C_BASE_UDP->UDP_FADDR = AT91C_UDP_FEN | usd.wValue ; |
| 337 | if(usd.wValue != 0) { |
| 338 | AT91C_BASE_UDP->UDP_GLBSTATE = AT91C_UDP_FADDEN; |
| 339 | } else { |
| 340 | AT91C_BASE_UDP->UDP_GLBSTATE = 0; |
| 341 | } |
| 342 | break; |
| 343 | |
| 344 | case USB_REQUEST_GET_CONFIGURATION: |
| 345 | UsbSendEp0(&CurrentConfiguration, sizeof(CurrentConfiguration)); |
| 346 | break; |
| 347 | |
| 348 | case USB_REQUEST_GET_STATUS: { |
| 349 | if(usd.bmRequestType & 0x80) { |
| 350 | uint16_t w = 0; |
| 351 | UsbSendEp0((uint8_t *)&w, sizeof(w)); |
| 352 | } |
| 353 | break; |
| 354 | } |
| 355 | case USB_REQUEST_SET_CONFIGURATION: |
| 356 | CurrentConfiguration = usd.wValue; |
| 357 | if(CurrentConfiguration) { |
| 358 | AT91C_BASE_UDP->UDP_GLBSTATE = AT91C_UDP_CONFG; |
| 359 | AT91C_BASE_UDP->UDP_CSR[1] = AT91C_UDP_EPEDS | |
| 360 | AT91C_UDP_EPTYPE_INT_OUT; |
| 361 | AT91C_BASE_UDP->UDP_CSR[2] = AT91C_UDP_EPEDS | |
| 362 | AT91C_UDP_EPTYPE_INT_IN; |
| 363 | } else { |
| 364 | AT91C_BASE_UDP->UDP_GLBSTATE = AT91C_UDP_FADDEN; |
| 365 | AT91C_BASE_UDP->UDP_CSR[1] = 0; |
| 366 | AT91C_BASE_UDP->UDP_CSR[2] = 0; |
| 367 | } |
| 368 | UsbSendZeroLength(); |
| 369 | break; |
| 370 | |
| 371 | case USB_REQUEST_GET_INTERFACE: { |
| 372 | uint8_t b = 0; |
| 373 | UsbSendEp0(&b, sizeof(b)); |
| 374 | break; |
| 375 | } |
| 376 | |
| 377 | case USB_REQUEST_SET_INTERFACE: |
| 378 | UsbSendZeroLength(); |
| 379 | break; |
| 380 | |
| 381 | case USB_REQUEST_CLEAR_FEATURE: |
| 382 | case USB_REQUEST_SET_FEATURE: |
| 383 | UsbSendStall(); |
| 384 | break; |
| 385 | case USB_REQUEST_SET_DESCRIPTOR: |
| 386 | case USB_REQUEST_SYNC_FRAME: |
| 387 | default: |
| 388 | break; |
| 389 | } |
| 390 | } |
| 391 | |
| 392 | void UsbSendPacket(uint8_t *packet, int len) |
| 393 | { |
| 394 | int i, thisTime; |
| 395 | |
| 396 | while(len > 0) { |
| 397 | thisTime = min(len, 8); |
| 398 | |
| 399 | for(i = 0; i < thisTime; i++) { |
| 400 | AT91C_BASE_UDP->UDP_FDR[2] = packet[i]; |
| 401 | } |
| 402 | AT91C_BASE_UDP->UDP_CSR[2] |= AT91C_UDP_TXPKTRDY; |
| 403 | |
| 404 | while(!(AT91C_BASE_UDP->UDP_CSR[2] & AT91C_UDP_TXCOMP)) |
| 405 | ; |
| 406 | AT91C_BASE_UDP->UDP_CSR[2] &= ~AT91C_UDP_TXCOMP; |
| 407 | |
| 408 | while(AT91C_BASE_UDP->UDP_CSR[2] & AT91C_UDP_TXCOMP) |
| 409 | ; |
| 410 | |
| 411 | len -= thisTime; |
| 412 | packet += thisTime; |
| 413 | } |
| 414 | } |
| 415 | |
| 416 | static void HandleRxdData(void) |
| 417 | { |
| 418 | int i, len; |
| 419 | |
| 420 | if(AT91C_BASE_UDP->UDP_CSR[1] & AT91C_UDP_RX_DATA_BK0) { |
| 421 | len = UDP_CSR_BYTES_RECEIVED(AT91C_BASE_UDP->UDP_CSR[1]); |
| 422 | |
| 423 | for(i = 0; i < len; i++) { |
| 424 | UsbBuffer[UsbSoFarCount] = AT91C_BASE_UDP->UDP_FDR[1]; |
| 425 | UsbSoFarCount++; |
| 426 | } |
| 427 | |
| 428 | AT91C_BASE_UDP->UDP_CSR[1] &= ~AT91C_UDP_RX_DATA_BK0; |
| 429 | while(AT91C_BASE_UDP->UDP_CSR[1] & AT91C_UDP_RX_DATA_BK0) |
| 430 | ; |
| 431 | |
| 432 | if(UsbSoFarCount >= 64) { |
| 433 | UsbPacketReceived(UsbBuffer, UsbSoFarCount); |
| 434 | UsbSoFarCount = 0; |
| 435 | } |
| 436 | } |
| 437 | |
| 438 | if(AT91C_BASE_UDP->UDP_CSR[1] & AT91C_UDP_RX_DATA_BK1) { |
| 439 | len = UDP_CSR_BYTES_RECEIVED(AT91C_BASE_UDP->UDP_CSR[1]); |
| 440 | |
| 441 | for(i = 0; i < len; i++) { |
| 442 | UsbBuffer[UsbSoFarCount] = AT91C_BASE_UDP->UDP_FDR[1]; |
| 443 | UsbSoFarCount++; |
| 444 | } |
| 445 | |
| 446 | AT91C_BASE_UDP->UDP_CSR[1] &= ~AT91C_UDP_RX_DATA_BK1; |
| 447 | while(AT91C_BASE_UDP->UDP_CSR[1] & AT91C_UDP_RX_DATA_BK1) |
| 448 | ; |
| 449 | |
| 450 | if(UsbSoFarCount >= 64) { |
| 451 | UsbPacketReceived(UsbBuffer, UsbSoFarCount); |
| 452 | UsbSoFarCount = 0; |
| 453 | } |
| 454 | } |
| 455 | } |
| 456 | |
| 457 | void UsbStart(void) |
| 458 | { |
| 459 | volatile int i; |
| 460 | |
| 461 | UsbSoFarCount = 0; |
| 462 | |
| 463 | USB_D_PLUS_PULLUP_OFF(); |
| 464 | |
| 465 | for(i = 0; i < 1000000; i++) |
| 466 | ; |
| 467 | |
| 468 | USB_D_PLUS_PULLUP_ON(); |
| 469 | |
| 470 | if(AT91C_BASE_UDP->UDP_ISR & AT91C_UDP_ENDBUSRES) { |
| 471 | AT91C_BASE_UDP->UDP_ICR = AT91C_UDP_ENDBUSRES; |
| 472 | } |
| 473 | } |
| 474 | |
| 475 | int UsbConnected() |
| 476 | { |
| 477 | if (AT91C_BASE_UDP->UDP_GLBSTATE & AT91C_UDP_CONFG) |
| 478 | return TRUE; |
| 479 | else |
| 480 | return FALSE; |
| 481 | } |
| 482 | |
| 483 | int UsbPoll(int blinkLeds) |
| 484 | { |
| 485 | int ret = FALSE; |
| 486 | |
| 487 | if(AT91C_BASE_UDP->UDP_ISR & AT91C_UDP_ENDBUSRES) { |
| 488 | AT91C_BASE_UDP->UDP_ICR = AT91C_UDP_ENDBUSRES; |
| 489 | |
| 490 | // following a reset we should be ready to receive a setup packet |
| 491 | AT91C_BASE_UDP->UDP_RSTEP = 0xf; |
| 492 | AT91C_BASE_UDP->UDP_RSTEP = 0; |
| 493 | |
| 494 | AT91C_BASE_UDP->UDP_FADDR = AT91C_UDP_FEN; |
| 495 | |
| 496 | AT91C_BASE_UDP->UDP_CSR[0] = AT91C_UDP_EPTYPE_CTRL | AT91C_UDP_EPEDS; |
| 497 | |
| 498 | CurrentConfiguration = 0; |
| 499 | |
| 500 | ret = TRUE; |
| 501 | } |
| 502 | |
| 503 | if(AT91C_BASE_UDP->UDP_ISR & UDP_INTERRUPT_ENDPOINT(0)) { |
| 504 | if(AT91C_BASE_UDP->UDP_CSR[0] & AT91C_UDP_RXSETUP) { |
| 505 | HandleRxdSetupData(); |
| 506 | ret = TRUE; |
| 507 | } |
| 508 | } |
| 509 | |
| 510 | if(AT91C_BASE_UDP->UDP_ISR & UDP_INTERRUPT_ENDPOINT(1)) { |
| 511 | HandleRxdData(); |
| 512 | ret = TRUE; |
| 513 | } |
| 514 | |
| 515 | return ret; |
| 516 | } |