Projects/AVRISP-MKII/Lib/XPROG/XPROGProtocol.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2010.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6       www.fourwalledcubicle.com
   7 */
   8
   9 /*
  10   Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11
  12   Permission to use, copy, modify, distribute, and sell this
  13   software and its documentation for any purpose is hereby granted
  14   without fee, provided that the above copyright notice appear in
  15   all copies and that both that the copyright notice and this
  16   permission notice and warranty disclaimer appear in supporting
  17   documentation, and that the name of the author not be used in
  18   advertising or publicity pertaining to distribution of the
  19   software without specific, written prior permission.
  20
  21   The author disclaim all warranties with regard to this
  22   software, including all implied warranties of merchantability
  23   and fitness.  In no event shall the author be liable for any
  24   special, indirect or consequential damages or any damages
  25   whatsoever resulting from loss of use, data or profits, whether
  26   in an action of contract, negligence or other tortious action,
  27   arising out of or in connection with the use or performance of
  28   this software.
  29 */
  30
  31 /** \file
  32  *
  33  *  XPROG Protocol handler, to process V2 Protocol wrapped XPROG commands used in Atmel programmer devices.
  34  */
  35
  36 #define  INCLUDE_FROM_XPROGPROTOCOL_C
  37 #include "XPROGProtocol.h"
  38
  39 #if defined(ENABLE_XPROG_PROTOCOL) || defined(__DOXYGEN__)
  40 /** Base absolute address for the target's NVM controller for PDI programming */
  41 uint32_t XPROG_Param_NVMBase = 0x010001C0;
  42
  43 /** Size in bytes of the target's EEPROM page */
  44 uint16_t XPROG_Param_EEPageSize;
  45
  46 /** Address of the TPI device's NVMCMD register for TPI programming */
  47 uint8_t  XPROG_Param_NVMCMDRegAddr;
  48
  49 /** Address of the TPI device's NVMCSR register for TPI programming */
  50 uint8_t  XPROG_Param_NVMCSRRegAddr;
  51
  52 /** Currently selected XPROG programming protocol */
  53 uint8_t  XPROG_SelectedProtocol = XPRG_PROTOCOL_PDI;
  54
  55 /** Handler for the CMD_XPROG_SETMODE command, which sets the programmer-to-target protocol used for PDI/TPI
  56  *  programming.
  57  */
  58 void XPROGProtocol_SetMode(void)
  59 {
  60         struct
  61         {
  62                 uint8_t Protocol;
  63         } SetMode_XPROG_Params;
  64
  65         Endpoint_Read_Stream_LE(&SetMode_XPROG_Params, sizeof(SetMode_XPROG_Params), NO_STREAM_CALLBACK);
  66
  67         Endpoint_ClearOUT();
  68         Endpoint_SelectEndpoint(AVRISP_DATA_IN_EPNUM);
  69         Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
  70
  71         XPROG_SelectedProtocol = SetMode_XPROG_Params.Protocol;
  72
  73         Endpoint_Write_Byte(CMD_XPROG_SETMODE);
  74         Endpoint_Write_Byte((SetMode_XPROG_Params.Protocol != XPRG_PROTOCOL_JTAG) ? STATUS_CMD_OK : STATUS_CMD_FAILED);
  75         Endpoint_ClearIN();
  76 }
  77
  78 /** Handler for the CMD_XPROG command, which wraps up XPROG commands in a V2 wrapper which need to be
  79  *  removed and processed so that the underlying XPROG command can be handled.
  80  */
  81 void XPROGProtocol_Command(void)
  82 {
  83         uint8_t XPROGCommand = Endpoint_Read_Byte();
  84
  85         switch (XPROGCommand)
  86         {
  87                 case XPRG_CMD_ENTER_PROGMODE:
  88                         XPROGProtocol_EnterXPROGMode();
  89                         break;
  90                 case XPRG_CMD_LEAVE_PROGMODE:
  91                         XPROGProtocol_LeaveXPROGMode();
  92                         break;
  93                 case XPRG_CMD_ERASE:
  94                         XPROGProtocol_Erase();
  95                         break;
  96                 case XPRG_CMD_WRITE_MEM:
  97                         XPROGProtocol_WriteMemory();
  98                         break;
  99                 case XPRG_CMD_READ_MEM:
 100                         XPROGProtocol_ReadMemory();
 101                         break;
 102                 case XPRG_CMD_CRC:
 103                         XPROGProtocol_ReadCRC();
 104                         break;
 105                 case XPRG_CMD_SET_PARAM:
 106                         XPROGProtocol_SetParam();
 107                         break;
 108         }
 109 }
 110
 111 /** Handler for the XPROG ENTER_PROGMODE command to establish a connection with the attached device. */
 112 static void XPROGProtocol_EnterXPROGMode(void)
 113 {
 114         Endpoint_ClearOUT();
 115         Endpoint_SelectEndpoint(AVRISP_DATA_IN_EPNUM);
 116         Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
 117
 118         bool NVMBusEnabled;
 119
 120         if (XPROG_SelectedProtocol == XPRG_PROTOCOL_PDI)
 121         {
 122                 /* Enable PDI programming mode with the attached target */
 123                 XPROGTarget_EnableTargetPDI();
 124
 125                 /* Store the RESET key into the RESET PDI register to keep the XMEGA in reset */
 126                 XPROGTarget_SendByte(PDI_CMD_STCS | PDI_RESET_REG);
 127                 XPROGTarget_SendByte(PDI_RESET_KEY);
 128
 129                 /* Lower direction change guard time to 0 USART bits */
 130                 XPROGTarget_SendByte(PDI_CMD_STCS | PDI_CTRL_REG);
 131                 XPROGTarget_SendByte(0x07);
 132
 133                 /* Enable access to the XPROG NVM bus by sending the documented NVM access key to the device */
 134                 XPROGTarget_SendByte(PDI_CMD_KEY);
 135                 for (uint8_t i = sizeof(PDI_NVMENABLE_KEY); i > 0; i--)
 136                   XPROGTarget_SendByte(PDI_NVMENABLE_KEY[i - 1]);
 137
 138                 /* Wait until the NVM bus becomes active */
 139                 NVMBusEnabled = XMEGANVM_WaitWhileNVMBusBusy();
 140         }
 141         else
 142         {
 143                 /* Enable TPI programming mode with the attached target */
 144                 XPROGTarget_EnableTargetTPI();
 145
 146                 /* Lower direction change guard time to 0 USART bits */
 147                 XPROGTarget_SendByte(TPI_CMD_SSTCS | TPI_CTRL_REG);
 148                 XPROGTarget_SendByte(0x07);
 149
 150                 /* Enable access to the XPROG NVM bus by sending the documented NVM access key to the device */
 151                 XPROGTarget_SendByte(TPI_CMD_SKEY);
 152                 for (uint8_t i = sizeof(TPI_NVMENABLE_KEY); i > 0; i--)
 153                   XPROGTarget_SendByte(TPI_NVMENABLE_KEY[i - 1]);
 154
 155                 /* Wait until the NVM bus becomes active */
 156                 NVMBusEnabled = TINYNVM_WaitWhileNVMBusBusy();
 157         }
 158
 159         Endpoint_Write_Byte(CMD_XPROG);
 160         Endpoint_Write_Byte(XPRG_CMD_ENTER_PROGMODE);
 161         Endpoint_Write_Byte(NVMBusEnabled ? XPRG_ERR_OK : XPRG_ERR_FAILED);
 162         Endpoint_ClearIN();
 163 }
 164
 165 /** Handler for the XPROG LEAVE_PROGMODE command to terminate the PDI programming connection with
 166  *  the attached device.
 167  */
 168 static void XPROGProtocol_LeaveXPROGMode(void)
 169 {
 170         Endpoint_ClearOUT();
 171         Endpoint_SelectEndpoint(AVRISP_DATA_IN_EPNUM);
 172         Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
 173
 174         if (XPROG_SelectedProtocol == XPRG_PROTOCOL_PDI)
 175         {
 176                 XMEGANVM_WaitWhileNVMBusBusy();
 177
 178                 /* Clear the RESET key in the RESET PDI register to allow the XMEGA to run */
 179                 XPROGTarget_SendByte(PDI_CMD_STCS | PDI_RESET_REG);
 180                 XPROGTarget_SendByte(0x00);
 181
 182                 XPROGTarget_DisableTargetPDI();
 183         }
 184         else
 185         {
 186                 TINYNVM_WaitWhileNVMBusBusy();
 187
 188                 /* Clear the NVMEN bit in the TPI CONTROL register to disable TPI mode */
 189                 XPROGTarget_SendByte(TPI_CMD_SSTCS | TPI_CTRL_REG);
 190                 XPROGTarget_SendByte(0x00);
 191
 192                 XPROGTarget_DisableTargetTPI();
 193         }
 194
 195         Endpoint_Write_Byte(CMD_XPROG);
 196         Endpoint_Write_Byte(XPRG_CMD_LEAVE_PROGMODE);
 197         Endpoint_Write_Byte(XPRG_ERR_OK);
 198         Endpoint_ClearIN();
 199 }
 200
 201 /** Handler for the XPRG ERASE command to erase a specific memory address space in the attached device. */
 202 static void XPROGProtocol_Erase(void)
 203 {
 204         uint8_t ReturnStatus = XPRG_ERR_OK;
 205
 206         struct
 207         {
 208                 uint8_t  MemoryType;
 209                 uint32_t Address;
 210         } Erase_XPROG_Params;
 211
 212         Endpoint_Read_Stream_LE(&Erase_XPROG_Params, sizeof(Erase_XPROG_Params), NO_STREAM_CALLBACK);
 213         Erase_XPROG_Params.Address = SwapEndian_32(Erase_XPROG_Params.Address);
 214
 215         Endpoint_ClearOUT();
 216         Endpoint_SelectEndpoint(AVRISP_DATA_IN_EPNUM);
 217         Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
 218
 219         uint8_t EraseCommand;
 220
 221         if (XPROG_SelectedProtocol == XPRG_PROTOCOL_PDI)
 222         {
 223                 /* Determine which NVM command to send to the device depending on the memory to erase */
 224                 switch (Erase_XPROG_Params.MemoryType)
 225                 {
 226                         case XPRG_ERASE_CHIP:
 227                                 EraseCommand = XMEGA_NVM_CMD_CHIPERASE;
 228                                 break;
 229                         case XPRG_ERASE_APP:
 230                                 EraseCommand = XMEGA_NVM_CMD_ERASEAPPSEC;
 231                                 break;
 232                         case XPRG_ERASE_BOOT:
 233                                 EraseCommand = XMEGA_NVM_CMD_ERASEBOOTSEC;
 234                                 break;
 235                         case XPRG_ERASE_EEPROM:
 236                                 EraseCommand = XMEGA_NVM_CMD_ERASEEEPROM;
 237                                 break;
 238                         case XPRG_ERASE_APP_PAGE:
 239                                 EraseCommand = XMEGA_NVM_CMD_ERASEAPPSECPAGE;
 240                                 break;
 241                         case XPRG_ERASE_BOOT_PAGE:
 242                                 EraseCommand = XMEGA_NVM_CMD_ERASEBOOTSECPAGE;
 243                                 break;
 244                         case XPRG_ERASE_EEPROM_PAGE:
 245                                 EraseCommand = XMEGA_NVM_CMD_ERASEEEPROMPAGE;
 246                                 break;
 247                         case XPRG_ERASE_USERSIG:
 248                                 EraseCommand = XMEGA_NVM_CMD_ERASEUSERSIG;
 249                                 break;
 250                         default:
 251                                 EraseCommand = XMEGA_NVM_CMD_NOOP;
 252                                 break;
 253                 }
 254
 255                 /* Erase the target memory, indicate timeout if ocurred */
 256                 if (!(XMEGANVM_EraseMemory(EraseCommand, Erase_XPROG_Params.Address)))
 257                   ReturnStatus = XPRG_ERR_TIMEOUT;
 258         }
 259         else
 260         {
 261                 if (Erase_XPROG_Params.MemoryType == XPRG_ERASE_CHIP)
 262                   EraseCommand = TINY_NVM_CMD_CHIPERASE;
 263                 else
 264                   EraseCommand = TINY_NVM_CMD_SECTIONERASE;
 265
 266                 /* Erase the target memory, indicate timeout if ocurred */
 267                 if (!(TINYNVM_EraseMemory(EraseCommand, Erase_XPROG_Params.Address)))
 268                   ReturnStatus = XPRG_ERR_TIMEOUT;
 269         }
 270
 271         Endpoint_Write_Byte(CMD_XPROG);
 272         Endpoint_Write_Byte(XPRG_CMD_ERASE);
 273         Endpoint_Write_Byte(ReturnStatus);
 274         Endpoint_ClearIN();
 275 }
 276
 277 /** Handler for the XPROG WRITE_MEMORY command to write to a specific memory space within the attached device. */
 278 static void XPROGProtocol_WriteMemory(void)
 279 {
 280         uint8_t ReturnStatus = XPRG_ERR_OK;
 281
 282         struct
 283         {
 284                 uint8_t  MemoryType;
 285                 uint8_t  PageMode;
 286                 uint32_t Address;
 287                 uint16_t Length;
 288                 uint8_t  ProgData[256];
 289         } WriteMemory_XPROG_Params;
 290
 291         Endpoint_Read_Stream_LE(&WriteMemory_XPROG_Params, (sizeof(WriteMemory_XPROG_Params) -
 292                                                             sizeof(WriteMemory_XPROG_Params).ProgData), NO_STREAM_CALLBACK);
 293         WriteMemory_XPROG_Params.Address = SwapEndian_32(WriteMemory_XPROG_Params.Address);
 294         WriteMemory_XPROG_Params.Length  = SwapEndian_16(WriteMemory_XPROG_Params.Length);
 295         Endpoint_Read_Stream_LE(&WriteMemory_XPROG_Params.ProgData, WriteMemory_XPROG_Params.Length, NO_STREAM_CALLBACK);
 296
 297         Endpoint_ClearOUT();
 298         Endpoint_SelectEndpoint(AVRISP_DATA_IN_EPNUM);
 299         Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
 300
 301         if (XPROG_SelectedProtocol == XPRG_PROTOCOL_PDI)
 302         {
 303                 /* Assume FLASH page programming by default, as it is the common case */
 304                 uint8_t WriteCommand     = XMEGA_NVM_CMD_WRITEFLASHPAGE;
 305                 uint8_t WriteBuffCommand = XMEGA_NVM_CMD_LOADFLASHPAGEBUFF;
 306                 uint8_t EraseBuffCommand = XMEGA_NVM_CMD_ERASEFLASHPAGEBUFF;
 307                 bool    PagedMemory      = true;
 308
 309                 switch (WriteMemory_XPROG_Params.MemoryType)
 310                 {
 311                         case XPRG_MEM_TYPE_APPL:
 312                                 WriteCommand     = XMEGA_NVM_CMD_WRITEAPPSECPAGE;
 313                                 break;
 314                         case XPRG_MEM_TYPE_BOOT:
 315                                 WriteCommand     = XMEGA_NVM_CMD_WRITEBOOTSECPAGE;
 316                                 break;
 317                         case XPRG_MEM_TYPE_EEPROM:
 318                                 WriteCommand     = XMEGA_NVM_CMD_WRITEEEPROMPAGE;
 319                                 WriteBuffCommand = XMEGA_NVM_CMD_LOADEEPROMPAGEBUFF;
 320                                 EraseBuffCommand = XMEGA_NVM_CMD_ERASEEEPROMPAGEBUFF;
 321                                 break;
 322                         case XPRG_MEM_TYPE_USERSIG:
 323                                 /* User signature is paged, but needs us to manually indicate the mode bits since the host doesn't set them */
 324                                 WriteMemory_XPROG_Params.PageMode = (XPRG_PAGEMODE_ERASE | XPRG_PAGEMODE_WRITE);
 325                                 WriteCommand     = XMEGA_NVM_CMD_WRITEUSERSIG;
 326                                 break;
 327                         case XPRG_MEM_TYPE_FUSE:
 328                                 WriteCommand     = XMEGA_NVM_CMD_WRITEFUSE;
 329                                 PagedMemory      = false;
 330                                 break;
 331                         case XPRG_MEM_TYPE_LOCKBITS:
 332                                 WriteCommand     = XMEGA_NVM_CMD_WRITELOCK;
 333                                 PagedMemory      = false;
 334                                 break;
 335                 }
 336
 337                 /* Send the appropriate memory write commands to the device, indicate timeout if occurred */
 338                 if ((PagedMemory && !(XMEGANVM_WritePageMemory(WriteBuffCommand, EraseBuffCommand, WriteCommand,
 339                                                                                                            WriteMemory_XPROG_Params.PageMode, WriteMemory_XPROG_Params.Address,
 340                                                                                                            WriteMemory_XPROG_Params.ProgData, WriteMemory_XPROG_Params.Length))) ||
 341                    (!PagedMemory && !(XMEGANVM_WriteByteMemory(WriteCommand, WriteMemory_XPROG_Params.Address,
 342                                                                                                            WriteMemory_XPROG_Params.ProgData[0]))))
 343                 {
 344                         ReturnStatus = XPRG_ERR_TIMEOUT;
 345                 }
 346         }
 347         else
 348         {
 349                 /* Send write command to the TPI device, indicate timeout if occurred */
 350                 if (!(TINYNVM_WriteMemory(WriteMemory_XPROG_Params.Address, WriteMemory_XPROG_Params.ProgData,
 351                       WriteMemory_XPROG_Params.Length)))
 352                 {
 353                         ReturnStatus = XPRG_ERR_TIMEOUT;
 354                 }
 355         }
 356
 357         Endpoint_Write_Byte(CMD_XPROG);
 358         Endpoint_Write_Byte(XPRG_CMD_WRITE_MEM);
 359         Endpoint_Write_Byte(ReturnStatus);
 360         Endpoint_ClearIN();
 361 }
 362
 363 /** Handler for the XPROG READ_MEMORY command to read data from a specific address space within the
 364  *  attached device.
 365  */
 366 static void XPROGProtocol_ReadMemory(void)
 367 {
 368         uint8_t ReturnStatus = XPRG_ERR_OK;
 369
 370         struct
 371         {
 372                 uint8_t  MemoryType;
 373                 uint32_t Address;
 374                 uint16_t Length;
 375         } ReadMemory_XPROG_Params;
 376
 377         Endpoint_Read_Stream_LE(&ReadMemory_XPROG_Params, sizeof(ReadMemory_XPROG_Params), NO_STREAM_CALLBACK);
 378         ReadMemory_XPROG_Params.Address = SwapEndian_32(ReadMemory_XPROG_Params.Address);
 379         ReadMemory_XPROG_Params.Length  = SwapEndian_16(ReadMemory_XPROG_Params.Length);
 380
 381         Endpoint_ClearOUT();
 382         Endpoint_SelectEndpoint(AVRISP_DATA_IN_EPNUM);
 383         Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
 384
 385         uint8_t ReadBuffer[256];
 386
 387         if (XPROG_SelectedProtocol == XPRG_PROTOCOL_PDI)
 388         {
 389                 /* Read the PDI target's memory, indicate timeout if occurred */
 390                 if (!(XMEGANVM_ReadMemory(ReadMemory_XPROG_Params.Address, ReadBuffer, ReadMemory_XPROG_Params.Length)))
 391                   ReturnStatus = XPRG_ERR_TIMEOUT;
 392         }
 393         else
 394         {
 395                 /* Read the TPI target's memory, indicate timeout if occurred */
 396                 if (!(TINYNVM_ReadMemory(ReadMemory_XPROG_Params.Address, ReadBuffer, ReadMemory_XPROG_Params.Length)))
 397                   ReturnStatus = XPRG_ERR_TIMEOUT;
 398         }
 399
 400         Endpoint_Write_Byte(CMD_XPROG);
 401         Endpoint_Write_Byte(XPRG_CMD_READ_MEM);
 402         Endpoint_Write_Byte(ReturnStatus);
 403
 404         if (ReturnStatus == XPRG_ERR_OK)
 405           Endpoint_Write_Stream_LE(ReadBuffer, ReadMemory_XPROG_Params.Length, NO_STREAM_CALLBACK);
 406
 407         Endpoint_ClearIN();
 408 }
 409
 410 /** Handler for the XPROG CRC command to read a specific memory space's CRC value for comparison between the
 411  *  attached device's memory and a data set on the host.
 412  */
 413 static void XPROGProtocol_ReadCRC(void)
 414 {
 415         uint8_t ReturnStatus = XPRG_ERR_OK;
 416
 417         struct
 418         {
 419                 uint8_t CRCType;
 420         } ReadCRC_XPROG_Params;
 421
 422         Endpoint_Read_Stream_LE(&ReadCRC_XPROG_Params, sizeof(ReadCRC_XPROG_Params), NO_STREAM_CALLBACK);
 423
 424         Endpoint_ClearOUT();
 425         Endpoint_SelectEndpoint(AVRISP_DATA_IN_EPNUM);
 426         Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
 427
 428         uint32_t MemoryCRC;
 429
 430         if (XPROG_SelectedProtocol == XPRG_PROTOCOL_PDI)
 431         {
 432                 uint8_t CRCCommand;
 433
 434                 /* Determine which NVM command to send to the device depending on the memory to CRC */
 435                 switch (ReadCRC_XPROG_Params.CRCType)
 436                 {
 437                         case XPRG_CRC_APP:
 438                                 CRCCommand = XMEGA_NVM_CMD_APPCRC;
 439                                 break;
 440                         case XPRG_CRC_BOOT:
 441                                 CRCCommand = XMEGA_NVM_CMD_BOOTCRC;
 442                                 break;
 443                         default:
 444                                 CRCCommand = XMEGA_NVM_CMD_FLASHCRC;
 445                                 break;
 446                 }
 447
 448                 /* Perform and retrieve the memory CRC, indicate timeout if occurred */
 449                 if (!(XMEGANVM_GetMemoryCRC(CRCCommand, &MemoryCRC)))
 450                   ReturnStatus = XPRG_ERR_TIMEOUT;
 451         }
 452         else
 453         {
 454                 /* TPI does not support memory CRC */
 455                 ReturnStatus = XPRG_ERR_FAILED;
 456         }
 457
 458         Endpoint_Write_Byte(CMD_XPROG);
 459         Endpoint_Write_Byte(XPRG_CMD_CRC);
 460         Endpoint_Write_Byte(ReturnStatus);
 461
 462         if (ReturnStatus == XPRG_ERR_OK)
 463         {
 464                 Endpoint_Write_Byte(MemoryCRC >> 16);
 465                 Endpoint_Write_Word_LE(MemoryCRC & 0xFFFF);
 466         }
 467
 468         Endpoint_ClearIN();
 469 }
 470
 471 /** Handler for the XPROG SET_PARAM command to set a XPROG parameter for use when communicating with the
 472  *  attached device.
 473  */
 474 static void XPROGProtocol_SetParam(void)
 475 {
 476         uint8_t ReturnStatus = XPRG_ERR_OK;
 477
 478         uint8_t XPROGParam = Endpoint_Read_Byte();
 479
 480         /* Determine which parameter is being set, store the new parameter value */
 481         switch (XPROGParam)
 482         {
 483                 case XPRG_PARAM_NVMBASE:
 484                         XPROG_Param_NVMBase = Endpoint_Read_DWord_BE();
 485                         break;
 486                 case XPRG_PARAM_EEPPAGESIZE:
 487                         XPROG_Param_EEPageSize = Endpoint_Read_Word_BE();
 488                         break;
 489                 case XPRG_PARAM_NVMCMD_REG:
 490                         XPROG_Param_NVMCMDRegAddr = Endpoint_Read_Byte();
 491                         break;
 492                 case XPRG_PARAM_NVMCSR_REG:
 493                         XPROG_Param_NVMCSRRegAddr = Endpoint_Read_Byte();
 494                         break;
 495                 default:
 496                         ReturnStatus = XPRG_ERR_FAILED;
 497                         break;
 498         }
 499
 500         Endpoint_ClearOUT();
 501         Endpoint_SelectEndpoint(AVRISP_DATA_IN_EPNUM);
 502         Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
 503
 504         Endpoint_Write_Byte(CMD_XPROG);
 505         Endpoint_Write_Byte(XPRG_CMD_SET_PARAM);
 506         Endpoint_Write_Byte(ReturnStatus);
 507         Endpoint_ClearIN();
 508 }
 509
 510 #endif