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.lufa-lib.org
   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    = 32;
  45
  46 /** Address of the TPI device's NVMCMD register for TPI programming */
  47 uint8_t  XPROG_Param_NVMCMDRegAddr = 0x33;
  48
  49 /** Address of the TPI device's NVMCSR register for TPI programming */
  50 uint8_t  XPROG_Param_NVMCSRRegAddr = 0x32;
  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 = false;
 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 if (XPROG_SelectedProtocol == XPRG_PROTOCOL_TPI)
 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                 /* Do it twice to make sure it takes affect (silicon bug?) */
 183                 XPROGTarget_SendByte(PDI_CMD_STCS | PDI_RESET_REG);
 184                 XPROGTarget_SendByte(0x00);
 185
 186                 XPROGTarget_DisableTargetPDI();
 187         }
 188         else
 189         {
 190                 TINYNVM_WaitWhileNVMBusBusy();
 191
 192                 /* Clear the NVMEN bit in the TPI CONTROL register to disable TPI mode */
 193                 XPROGTarget_SendByte(TPI_CMD_SSTCS | TPI_CTRL_REG);
 194                 XPROGTarget_SendByte(0x00);
 195
 196                 XPROGTarget_DisableTargetTPI();
 197         }
 198
 199         #if defined(XCK_RESCUE_CLOCK_ENABLE) && defined(ENABLE_ISP_PROTOCOL)
 200         ISPTarget_ConfigureRescueClock();
 201         #endif
 202
 203         Endpoint_Write_Byte(CMD_XPROG);
 204         Endpoint_Write_Byte(XPRG_CMD_LEAVE_PROGMODE);
 205         Endpoint_Write_Byte(XPRG_ERR_OK);
 206         Endpoint_ClearIN();
 207 }
 208
 209 /** Handler for the XPRG ERASE command to erase a specific memory address space in the attached device. */
 210 static void XPROGProtocol_Erase(void)
 211 {
 212         uint8_t ReturnStatus = XPRG_ERR_OK;
 213
 214         struct
 215         {
 216                 uint8_t  MemoryType;
 217                 uint32_t Address;
 218         } Erase_XPROG_Params;
 219
 220         Endpoint_Read_Stream_LE(&Erase_XPROG_Params, sizeof(Erase_XPROG_Params), NO_STREAM_CALLBACK);
 221         Erase_XPROG_Params.Address = SwapEndian_32(Erase_XPROG_Params.Address);
 222
 223         Endpoint_ClearOUT();
 224         Endpoint_SelectEndpoint(AVRISP_DATA_IN_EPNUM);
 225         Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
 226
 227         uint8_t EraseCommand;
 228
 229         if (XPROG_SelectedProtocol == XPRG_PROTOCOL_PDI)
 230         {
 231                 /* Determine which NVM command to send to the device depending on the memory to erase */
 232                 switch (Erase_XPROG_Params.MemoryType)
 233                 {
 234                         case XPRG_ERASE_CHIP:
 235                                 EraseCommand = XMEGA_NVM_CMD_CHIPERASE;
 236                                 break;
 237                         case XPRG_ERASE_APP:
 238                                 EraseCommand = XMEGA_NVM_CMD_ERASEAPPSEC;
 239                                 break;
 240                         case XPRG_ERASE_BOOT:
 241                                 EraseCommand = XMEGA_NVM_CMD_ERASEBOOTSEC;
 242                                 break;
 243                         case XPRG_ERASE_EEPROM:
 244                                 EraseCommand = XMEGA_NVM_CMD_ERASEEEPROM;
 245                                 break;
 246                         case XPRG_ERASE_APP_PAGE:
 247                                 EraseCommand = XMEGA_NVM_CMD_ERASEAPPSECPAGE;
 248                                 break;
 249                         case XPRG_ERASE_BOOT_PAGE:
 250                                 EraseCommand = XMEGA_NVM_CMD_ERASEBOOTSECPAGE;
 251                                 break;
 252                         case XPRG_ERASE_EEPROM_PAGE:
 253                                 EraseCommand = XMEGA_NVM_CMD_ERASEEEPROMPAGE;
 254                                 break;
 255                         case XPRG_ERASE_USERSIG:
 256                                 EraseCommand = XMEGA_NVM_CMD_ERASEUSERSIG;
 257                                 break;
 258                         default:
 259                                 EraseCommand = XMEGA_NVM_CMD_NOOP;
 260                                 break;
 261                 }
 262
 263                 /* Erase the target memory, indicate timeout if occurred */
 264                 if (!(XMEGANVM_EraseMemory(EraseCommand, Erase_XPROG_Params.Address)))
 265                   ReturnStatus = XPRG_ERR_TIMEOUT;
 266         }
 267         else
 268         {
 269                 if (Erase_XPROG_Params.MemoryType == XPRG_ERASE_CHIP)
 270                   EraseCommand = TINY_NVM_CMD_CHIPERASE;
 271                 else
 272                   EraseCommand = TINY_NVM_CMD_SECTIONERASE;
 273
 274                 /* Erase the target memory, indicate timeout if occurred */
 275                 if (!(TINYNVM_EraseMemory(EraseCommand, Erase_XPROG_Params.Address)))
 276                   ReturnStatus = XPRG_ERR_TIMEOUT;
 277         }
 278
 279         Endpoint_Write_Byte(CMD_XPROG);
 280         Endpoint_Write_Byte(XPRG_CMD_ERASE);
 281         Endpoint_Write_Byte(ReturnStatus);
 282         Endpoint_ClearIN();
 283 }
 284
 285 /** Handler for the XPROG WRITE_MEMORY command to write to a specific memory space within the attached device. */
 286 static void XPROGProtocol_WriteMemory(void)
 287 {
 288         uint8_t ReturnStatus = XPRG_ERR_OK;
 289
 290         struct
 291         {
 292                 uint8_t  MemoryType;
 293                 uint8_t  PageMode;
 294                 uint32_t Address;
 295                 uint16_t Length;
 296                 uint8_t  ProgData[256];
 297         } WriteMemory_XPROG_Params;
 298
 299         Endpoint_Read_Stream_LE(&WriteMemory_XPROG_Params, (sizeof(WriteMemory_XPROG_Params) -
 300                                                             sizeof(WriteMemory_XPROG_Params).ProgData), NO_STREAM_CALLBACK);
 301         WriteMemory_XPROG_Params.Address = SwapEndian_32(WriteMemory_XPROG_Params.Address);
 302         WriteMemory_XPROG_Params.Length  = SwapEndian_16(WriteMemory_XPROG_Params.Length);
 303         Endpoint_Read_Stream_LE(&WriteMemory_XPROG_Params.ProgData, WriteMemory_XPROG_Params.Length, NO_STREAM_CALLBACK);
 304
 305         Endpoint_ClearOUT();
 306         Endpoint_SelectEndpoint(AVRISP_DATA_IN_EPNUM);
 307         Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
 308
 309         if (XPROG_SelectedProtocol == XPRG_PROTOCOL_PDI)
 310         {
 311                 /* Assume FLASH page programming by default, as it is the common case */
 312                 uint8_t WriteCommand     = XMEGA_NVM_CMD_WRITEFLASHPAGE;
 313                 uint8_t WriteBuffCommand = XMEGA_NVM_CMD_LOADFLASHPAGEBUFF;
 314                 uint8_t EraseBuffCommand = XMEGA_NVM_CMD_ERASEFLASHPAGEBUFF;
 315                 bool    PagedMemory      = true;
 316
 317                 switch (WriteMemory_XPROG_Params.MemoryType)
 318                 {
 319                         case XPRG_MEM_TYPE_APPL:
 320                                 WriteCommand     = XMEGA_NVM_CMD_WRITEAPPSECPAGE;
 321                                 break;
 322                         case XPRG_MEM_TYPE_BOOT:
 323                                 WriteCommand     = XMEGA_NVM_CMD_WRITEBOOTSECPAGE;
 324                                 break;
 325                         case XPRG_MEM_TYPE_EEPROM:
 326                                 WriteCommand     = XMEGA_NVM_CMD_ERASEWRITEEEPROMPAGE;
 327                                 WriteBuffCommand = XMEGA_NVM_CMD_LOADEEPROMPAGEBUFF;
 328                                 EraseBuffCommand = XMEGA_NVM_CMD_ERASEEEPROMPAGEBUFF;
 329                                 break;
 330                         case XPRG_MEM_TYPE_USERSIG:
 331                                 WriteCommand     = XMEGA_NVM_CMD_WRITEUSERSIG;
 332                                 break;
 333                         case XPRG_MEM_TYPE_FUSE:
 334                                 WriteCommand     = XMEGA_NVM_CMD_WRITEFUSE;
 335                                 PagedMemory      = false;
 336                                 break;
 337                         case XPRG_MEM_TYPE_LOCKBITS:
 338                                 WriteCommand     = XMEGA_NVM_CMD_WRITELOCK;
 339                                 PagedMemory      = false;
 340                                 break;
 341                 }
 342
 343                 /* Send the appropriate memory write commands to the device, indicate timeout if occurred */
 344                 if ((PagedMemory && !(XMEGANVM_WritePageMemory(WriteBuffCommand, EraseBuffCommand, WriteCommand,
 345                                                                                                            WriteMemory_XPROG_Params.PageMode, WriteMemory_XPROG_Params.Address,
 346                                                                                                            WriteMemory_XPROG_Params.ProgData, WriteMemory_XPROG_Params.Length))) ||
 347                    (!PagedMemory && !(XMEGANVM_WriteByteMemory(WriteCommand, WriteMemory_XPROG_Params.Address,
 348                                                                                                            WriteMemory_XPROG_Params.ProgData[0]))))
 349                 {
 350                         ReturnStatus = XPRG_ERR_TIMEOUT;
 351                 }
 352         }
 353         else
 354         {
 355                 /* Send write command to the TPI device, indicate timeout if occurred */
 356                 if (!(TINYNVM_WriteMemory(WriteMemory_XPROG_Params.Address, WriteMemory_XPROG_Params.ProgData,
 357                       WriteMemory_XPROG_Params.Length)))
 358                 {
 359                         ReturnStatus = XPRG_ERR_TIMEOUT;
 360                 }
 361         }
 362
 363         Endpoint_Write_Byte(CMD_XPROG);
 364         Endpoint_Write_Byte(XPRG_CMD_WRITE_MEM);
 365         Endpoint_Write_Byte(ReturnStatus);
 366         Endpoint_ClearIN();
 367 }
 368
 369 /** Handler for the XPROG READ_MEMORY command to read data from a specific address space within the
 370  *  attached device.
 371  */
 372 static void XPROGProtocol_ReadMemory(void)
 373 {
 374         uint8_t ReturnStatus = XPRG_ERR_OK;
 375
 376         struct
 377         {
 378                 uint8_t  MemoryType;
 379                 uint32_t Address;
 380                 uint16_t Length;
 381         } ReadMemory_XPROG_Params;
 382
 383         Endpoint_Read_Stream_LE(&ReadMemory_XPROG_Params, sizeof(ReadMemory_XPROG_Params), NO_STREAM_CALLBACK);
 384         ReadMemory_XPROG_Params.Address = SwapEndian_32(ReadMemory_XPROG_Params.Address);
 385         ReadMemory_XPROG_Params.Length  = SwapEndian_16(ReadMemory_XPROG_Params.Length);
 386
 387         Endpoint_ClearOUT();
 388         Endpoint_SelectEndpoint(AVRISP_DATA_IN_EPNUM);
 389         Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
 390
 391         uint8_t ReadBuffer[256];
 392
 393         if (XPROG_SelectedProtocol == XPRG_PROTOCOL_PDI)
 394         {
 395                 /* Read the PDI target's memory, indicate timeout if occurred */
 396                 if (!(XMEGANVM_ReadMemory(ReadMemory_XPROG_Params.Address, ReadBuffer, ReadMemory_XPROG_Params.Length)))
 397                   ReturnStatus = XPRG_ERR_TIMEOUT;
 398         }
 399         else
 400         {
 401                 /* Read the TPI target's memory, indicate timeout if occurred */
 402                 if (!(TINYNVM_ReadMemory(ReadMemory_XPROG_Params.Address, ReadBuffer, ReadMemory_XPROG_Params.Length)))
 403                   ReturnStatus = XPRG_ERR_TIMEOUT;
 404         }
 405
 406         Endpoint_Write_Byte(CMD_XPROG);
 407         Endpoint_Write_Byte(XPRG_CMD_READ_MEM);
 408         Endpoint_Write_Byte(ReturnStatus);
 409
 410         if (ReturnStatus == XPRG_ERR_OK)
 411           Endpoint_Write_Stream_LE(ReadBuffer, ReadMemory_XPROG_Params.Length, NO_STREAM_CALLBACK);
 412
 413         Endpoint_ClearIN();
 414 }
 415
 416 /** Handler for the XPROG CRC command to read a specific memory space's CRC value for comparison between the
 417  *  attached device's memory and a data set on the host.
 418  */
 419 static void XPROGProtocol_ReadCRC(void)
 420 {
 421         uint8_t ReturnStatus = XPRG_ERR_OK;
 422
 423         struct
 424         {
 425                 uint8_t CRCType;
 426         } ReadCRC_XPROG_Params;
 427
 428         Endpoint_Read_Stream_LE(&ReadCRC_XPROG_Params, sizeof(ReadCRC_XPROG_Params), NO_STREAM_CALLBACK);
 429
 430         Endpoint_ClearOUT();
 431         Endpoint_SelectEndpoint(AVRISP_DATA_IN_EPNUM);
 432         Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
 433
 434         uint32_t MemoryCRC;
 435
 436         if (XPROG_SelectedProtocol == XPRG_PROTOCOL_PDI)
 437         {
 438                 uint8_t CRCCommand;
 439
 440                 /* Determine which NVM command to send to the device depending on the memory to CRC */
 441                 switch (ReadCRC_XPROG_Params.CRCType)
 442                 {
 443                         case XPRG_CRC_APP:
 444                                 CRCCommand = XMEGA_NVM_CMD_APPCRC;
 445                                 break;
 446                         case XPRG_CRC_BOOT:
 447                                 CRCCommand = XMEGA_NVM_CMD_BOOTCRC;
 448                                 break;
 449                         default:
 450                                 CRCCommand = XMEGA_NVM_CMD_FLASHCRC;
 451                                 break;
 452                 }
 453
 454                 /* Perform and retrieve the memory CRC, indicate timeout if occurred */
 455                 if (!(XMEGANVM_GetMemoryCRC(CRCCommand, &MemoryCRC)))
 456                   ReturnStatus = XPRG_ERR_TIMEOUT;
 457         }
 458         else
 459         {
 460                 /* TPI does not support memory CRC */
 461                 ReturnStatus = XPRG_ERR_FAILED;
 462         }
 463
 464         Endpoint_Write_Byte(CMD_XPROG);
 465         Endpoint_Write_Byte(XPRG_CMD_CRC);
 466         Endpoint_Write_Byte(ReturnStatus);
 467
 468         if (ReturnStatus == XPRG_ERR_OK)
 469         {
 470                 Endpoint_Write_Byte(MemoryCRC >> 16);
 471                 Endpoint_Write_Word_LE(MemoryCRC & 0xFFFF);
 472         }
 473
 474         Endpoint_ClearIN();
 475 }
 476
 477 /** Handler for the XPROG SET_PARAM command to set a XPROG parameter for use when communicating with the
 478  *  attached device.
 479  */
 480 static void XPROGProtocol_SetParam(void)
 481 {
 482         uint8_t ReturnStatus = XPRG_ERR_OK;
 483
 484         uint8_t XPROGParam = Endpoint_Read_Byte();
 485
 486         /* Determine which parameter is being set, store the new parameter value */
 487         switch (XPROGParam)
 488         {
 489                 case XPRG_PARAM_NVMBASE:
 490                         XPROG_Param_NVMBase = Endpoint_Read_DWord_BE();
 491                         break;
 492                 case XPRG_PARAM_EEPPAGESIZE:
 493                         XPROG_Param_EEPageSize = Endpoint_Read_Word_BE();
 494                         break;
 495                 case XPRG_PARAM_NVMCMD_REG:
 496                         XPROG_Param_NVMCMDRegAddr = Endpoint_Read_Byte();
 497                         break;
 498                 case XPRG_PARAM_NVMCSR_REG:
 499                         XPROG_Param_NVMCSRRegAddr = Endpoint_Read_Byte();
 500                         break;
 501                 default:
 502                         ReturnStatus = XPRG_ERR_FAILED;
 503                         break;
 504         }
 505
 506         Endpoint_ClearOUT();
 507         Endpoint_SelectEndpoint(AVRISP_DATA_IN_EPNUM);
 508         Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
 509
 510         Endpoint_Write_Byte(CMD_XPROG);
 511         Endpoint_Write_Byte(XPRG_CMD_SET_PARAM);
 512         Endpoint_Write_Byte(ReturnStatus);
 513         Endpoint_ClearIN();
 514 }
 515
 516 #endif
 517