AVR32-Problem: sd_mmc_spi_get_cid() sd_mmc_spi_get_csd()

Bin jetzt einen halben Schritt weiter. die Fkt. wird an der Stelle --> 
verlassen. Jemand eine Idee?

Bool sd_mmc_spi_get_cid(U8 *buffer)
{
U8 retry;
unsigned short data_read;
  // wait for MMC not busy
  if (KO == sd_mmc_spi_wait_not_busy())
    return KO;

  spi_unselectChip(SD_MMC_SPI, SD_MMC_SPI_NPCS);  // select SD_MMC_SPI
  // issue command
  r1 = sd_mmc_spi_command(MMC_SEND_CID, 0);
  // check for valid response
  if(r1 != 0x00)
  {
    spi_unselectChip(SD_MMC_SPI, SD_MMC_SPI_NPCS);  // unselect 
SD_MMC_SPI
    sd_mmc_spi_init_done = FALSE;
-->    return KO;
  }
  // wait for data block start
  retry = 0;
  while((r2 = sd_mmc_spi_send_and_read(0xFF)) != MMC_STARTBLOCK_READ)
  {
    if (retry > 8)
    {
      spi_unselectChip(SD_MMC_SPI, SD_MMC_SPI_NPCS);  // unselect 
SD_MMC_SPI
      return KO;
    }
    retry++;
  }
  // store valid data block
  for (retry = 0; retry <16; retry++)
  {
   spi_write(SD_MMC_SPI,0xFF);
   spi_read(SD_MMC_SPI,&data_read);
   buffer[retry] = data_read;
  }
  spi_write(SD_MMC_SPI,0xFF);   // load CRC (not used)
  spi_write(SD_MMC_SPI,0xFF);
  spi_write(SD_MMC_SPI,0xFF);   // give clock again to end transaction
  spi_unselectChip(SD_MMC_SPI, SD_MMC_SPI_NPCS);  // unselect SD_MMC_SPI
  return OK;
}

U8 sd_mmc_spi_command(U8 command, U32 arg)
{
U8 retry;

  spi_write(SD_MMC_SPI,0xFF);            // write dummy byte
  spi_write(SD_MMC_SPI,command | 0x40);  // send command
  spi_write(SD_MMC_SPI,arg>>24);         // send parameter
  spi_write(SD_MMC_SPI,arg>>16);
  spi_write(SD_MMC_SPI,arg>>8 );
  spi_write(SD_MMC_SPI,arg    );
  spi_write(SD_MMC_SPI,0x95);            // correct CRC for first 
command in SPI (CMD0)
                                  // after, the CRC is ignored
  // end command
  // wait for response
  // if more than 8 retries, card has timed-out and return the received 
0xFF
  retry = 0;
  r1    = 0xFF;
  while((r1 = sd_mmc_spi_send_and_read(0xFF)) == 0xFF)
  {
    retry++;
    if(retry > 10) break;
  }
  return r1;
}