STM32F407 SDIO读写SD卡DATACRCFAIL错误

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楼主 | 2018-7-27 18:12 | 只看该作者回帖奖励

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stm32f407, IO, AC, AI, SD卡

各位大神：
小弟最近调试裸机版本的SD卡读写测试程序，发现在仿真的时候  时对时错，很不稳定。
数据报错的时候提示数据CRC错误。
各位大神有没有类似的经历或者经验介绍，期待各位的帮忙。
DMA读写方式，附部分源码
/**
  * @brief  Tests the SD card Single Blocks operations.
  * @param  None
  * @retval None
  */
void SD_SingleBlockTest(void)
{
  /*------------------- Block Read/Write --------------------------*/
  /* Fill the buffer to send */
  Fill_Buffer(Buffer_Block_Tx, BLOCK_SIZE, 0x320F);

  if (Status == SD_OK)
  {
/* Write block of 512 bytes on address 0 */
Status = SD_WriteBlock(Buffer_Block_Tx, 0x00, BLOCK_SIZE);
/* Check if the Transfer is finished */
Status = SD_WaitWriteOperation();
while(SD_GetStatus() != SD_TRANSFER_OK);
  }

  if (Status == SD_OK)
  {
/* Read block of 512 bytes from address 0 */
Status = SD_ReadBlock(Buffer_Block_Rx, 0x00, BLOCK_SIZE);
/* Check if the Transfer is finished */
Status = SD_WaitReadOperation();
while(SD_GetStatus() != SD_TRANSFER_OK);
  }

  /* Check the correctness of written data */
  if (Status == SD_OK)
  {
TransferStatus1 = Buffercmp(Buffer_Block_Tx, Buffer_Block_Rx, BLOCK_SIZE);
  }

  if(TransferStatus1 == PASSED)
  {
STM_EVAL_LEDOn(LED2);
  }
  else
  {
STM_EVAL_LEDOff(LED2);
STM_EVAL_LEDOn(LED4);
  }
}

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