STM32

求助关于STM32F207 SD卡读写总是失败的原因

2019-07-14 21:31发布

站内问答 / STM32/STM8
7568 0 1115
之前换个几个卡了。不是读写成功擦除失败就是擦除成功读写失败。刚有买了个32G的闪迪卡，又出现了读写失败。擦除成功。不可能是真的是卡的问题。还是程序的问题。我把真个工程附件都添加进去了。大神帮看看啊。
用的是下面的代码。可以说就是官方的例程。
/* Initialize LEDs available on STM322xG-EVAL board *************************/
  STM_EVAL_LEDInit(LED1);
  STM_EVAL_LEDInit(LED2);
  STM_EVAL_LEDInit(LED3);
  STM_EVAL_LEDInit(LED4);  

  /* Interrupt Config */
  NVIC_Configuration();

  /*------------------------------ SD Init ---------------------------------- */
  if((Status = SD_Init()) != SD_OK)
  {
    STM_EVAL_LEDOn(LED4);
  }
        
  while((Status == SD_OK) && (SDCardOperation != SD_OPERATION_END) && (SD_Detect()== SD_PRESENT))
  {
    switch(SDCardOperation)
    {
      /*-------------------------- SD Erase Test ---------------------------- */
      case (SD_OPERATION_ERASE):
      {
        SD_EraseTest();
        SDCardOperation = SD_OPERATION_BLOCK;
        break;
      }
      /*-------------------------- SD Single Block Test --------------------- */
      case (SD_OPERATION_BLOCK):
      {
        SD_SingleBlockTest();
        SDCardOperation = SD_OPERATION_MULTI_BLOCK;
        break;
      }      
      /*-------------------------- SD Multi Blocks Test --------------------- */
      case (SD_OPERATION_MULTI_BLOCK):
      {
        SD_MultiBlockTest();
        SDCardOperation = SD_OPERATION_END;
        break;
      }              
    }
  }
  
  /* Infinite loop */
  while (1)
  {}
}

/**
  * @brief  Configures SDIO IRQ channel.
  * @param  None
  * @retval None
  */
void NVIC_Configuration(void)
{
  NVIC_InitTypeDef NVIC_InitStructure;

  /* Configure the NVIC Preemption Priority Bits */
  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);

  NVIC_InitStructure.NVIC_IRQChannel = SDIO_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
}

/**
  * @brief  Tests the SD card erase operation.
  * @param  None
  * @retval None
  */
void SD_EraseTest(void)
{
  /*------------------- Block Erase ------------------------------------------*/
  if (Status == SD_OK)
  {
    /* Erase NumberOfBlocks Blocks of WRITE_BL_LEN(512 Bytes) */
    Status = SD_Erase(0x00, (BLOCK_SIZE * NUMBER_OF_BLOCKS));
  }

  if (Status == SD_OK)
  {
    Status = SD_ReadMultiBlocks(Buffer_MultiBlock_Rx, 0x00, BLOCK_SIZE, NUMBER_OF_BLOCKS);

    /* Check if the Transfer is finished */
    Status = SD_WaitReadOperation();

    /* Wait until end of DMA transfer */
    while(SD_GetStatus() != SD_TRANSFER_OK);
  }

  /* Check the correctness of erased blocks */
  if (Status == SD_OK)
  {
    EraseStatus = eBuffercmp(Buffer_MultiBlock_Rx, MULTI_BUFFER_SIZE);
  }
  
  if(EraseStatus == PASSED)
  {
    STM_EVAL_LEDOn(LED1);
  }
  else
  {
    STM_EVAL_LEDOff(LED1);
    STM_EVAL_LEDOn(LED4);   
  }
}


/**
  * @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);   
  }
}

/**
  * @brief  Tests the SD card Multiple Blocks operations.
  * @param  None
  * @retval None
  */
void SD_MultiBlockTest(void)
{
  /*--------------- Multiple Block Read/Write ---------------------*/
  /* Fill the buffer to send */
  Fill_Buffer(Buffer_MultiBlock_Tx, MULTI_BUFFER_SIZE, 0x0);

  if (Status == SD_OK)
  {
    /* Write multiple block of many bytes on address 0 */
    Status = SD_WriteMultiBlocks(Buffer_MultiBlock_Tx, 0x00, BLOCK_SIZE, NUMBER_OF_BLOCKS);
    /* Check if the Transfer is finished */
    Status = SD_WaitWriteOperation();
    while(SD_GetStatus() != SD_TRANSFER_OK);
  }

  if (Status == SD_OK)
  {
    /* Read block of many bytes from address 0 */
    Status = SD_ReadMultiBlocks(Buffer_MultiBlock_Rx, 0x00, BLOCK_SIZE, NUMBER_OF_BLOCKS);
    /* 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)
  {
    TransferStatus2 = Buffercmp(Buffer_MultiBlock_Tx, Buffer_MultiBlock_Rx, MULTI_BUFFER_SIZE);
  }
  
  if(TransferStatus2 == PASSED)
  {
    STM_EVAL_LEDOn(LED3);
  }
  else
  {
    STM_EVAL_LEDOff(LED3);
    STM_EVAL_LEDOn(LED4);   
  }
}

/**
  * @brief  Compares two buffers.
  * @param  pBuffer1, pBuffer2: buffers to be compared.
  * @param  BufferLength: buffer's length
  * @retval PASSED: pBuffer1 identical to pBuffer2
  *         FAILED: pBuffer1 differs from pBuffer2
  */
TestStatus Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint32_t BufferLength)
{
  while (BufferLength--)
  {
    if (*pBuffer1 != *pBuffer2)
    {
      return FAILED;
    }

    pBuffer1++;
    pBuffer2++;
  }

  return PASSED;
}



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