sdcard.c

STM32 库文件

    errorstatus = CmdResp1Error(SDIO_SET_BLOCKLEN);

    if (errorstatus != SD_OK)
    {
      return(errorstatus);
    }
  }
  else
  {
    errorstatus = SD_INVALID_PARAMETER;
    return(errorstatus);
  }

  /* Wait till card is ready for data Added */
  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) (RCA << 16);
  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_STATUS;
  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  SDIO_SendCommand(&SDIO_CmdInitStructure);

  errorstatus = CmdResp1Error(SDIO_SEND_STATUS);

  if (errorstatus != SD_OK)
  {
    return(errorstatus);
  }

  cardstatus = SDIO_GetResponse(SDIO_RESP1);

  timeout = SD_DATATIMEOUT;

  while (((cardstatus & 0x00000100) == 0) && (timeout > 0))
  {
    timeout--;
    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) (RCA << 16);
    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_STATUS;
    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
    SDIO_SendCommand(&SDIO_CmdInitStructure);

    errorstatus = CmdResp1Error(SDIO_SEND_STATUS);

    if (errorstatus != SD_OK)
    {
      return(errorstatus);
    }
    cardstatus = SDIO_GetResponse(SDIO_RESP1);
  }

  if (timeout == 0)
  {
    return(SD_ERROR);
  }

  /* Send CMD24 WRITE_SINGLE_BLOCK */
  SDIO_CmdInitStructure.SDIO_Argument = addr;
  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_WRITE_SINGLE_BLOCK;
  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  SDIO_SendCommand(&SDIO_CmdInitStructure);

  errorstatus = CmdResp1Error(SDIO_WRITE_SINGLE_BLOCK);

  if (errorstatus != SD_OK)
  {
    return(errorstatus);
  }

  TotalNumberOfBytes = BlockSize;
  StopCondition = 0;
  SrcBuffer = writebuff;

  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
  SDIO_DataInitStructure.SDIO_DataLength = BlockSize;
  SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) power << 4;
  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
  SDIO_DataConfig(&SDIO_DataInitStructure);

  /* In case of single data block transfer no need of stop command at all */
  if (DeviceMode == SD_POLLING_MODE)
  {
    while (!(SDIO->STA & (SDIO_FLAG_DBCKEND | SDIO_FLAG_TXUNDERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_STBITERR)))
    {
      if (SDIO_GetFlagStatus(SDIO_FLAG_TXFIFOHE) != RESET)
      {
        if ((TotalNumberOfBytes - bytestransferred) < 32)
        {
          restwords = ((TotalNumberOfBytes - bytestransferred) % 4 == 0) ? ((TotalNumberOfBytes - bytestransferred) / 4) : (( TotalNumberOfBytes -  bytestransferred) / 4 + 1);

          for (count = 0; count < restwords; count++, tempbuff++, bytestransferred += 4)
          {
            SDIO_WriteData(*tempbuff);
          }
        }
        else
        {
          for (count = 0; count < 8; count++)
          {
            SDIO_WriteData(*(tempbuff + count));
          }
          tempbuff += 8;
          bytestransferred += 32;
        }
      }
    }
    if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
    {
      SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
      errorstatus = SD_DATA_TIMEOUT;
      return(errorstatus);
    }
    else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
    {
      SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
      errorstatus = SD_DATA_CRC_FAIL;
      return(errorstatus);
    }
    else if (SDIO_GetFlagStatus(SDIO_FLAG_TXUNDERR) != RESET)
    {
      SDIO_ClearFlag(SDIO_FLAG_TXUNDERR);
      errorstatus = SD_TX_UNDERRUN;
      return(errorstatus);
    }
    else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
    {
      SDIO_ClearFlag(SDIO_FLAG_STBITERR);
      errorstatus = SD_START_BIT_ERR;
      return(errorstatus);
    }
  }
  else if (DeviceMode == SD_INTERRUPT_MODE)
  {
    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_FLAG_TXFIFOHE | SDIO_IT_TXUNDERR | SDIO_IT_STBITERR, ENABLE);
    while ((TransferEnd == 0) && (TransferError == SD_OK))
    {}
    if (TransferError != SD_OK)
    {
      return(TransferError);
    }
  }
  else if (DeviceMode == SD_DMA_MODE)
  {
    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_TXUNDERR | SDIO_IT_STBITERR, ENABLE);
    DMA_TxConfiguration(writebuff, BlockSize);
    SDIO_DMACmd(ENABLE);
    while (DMA_GetFlagStatus(DMA2_FLAG_TC4) == RESET)
    {}
    while ((TransferEnd == 0) && (TransferError == SD_OK))
    {}
    if (TransferError != SD_OK)
    {
      return(TransferError);
    }
  }

  /* Clear all the static flags */
  SDIO_ClearFlag(SDIO_STATIC_FLAGS);

  /* Wait till the card is in programming state */
  errorstatus = IsCardProgramming(&cardstate);

  while ((errorstatus == SD_OK) && ((cardstate == SD_CARD_PROGRAMMING) || (cardstate == SD_CARD_RECEIVING)))
  {
    errorstatus = IsCardProgramming(&cardstate);
  }

  return(errorstatus);
}

/**
  * @brief  Allows to write blocks starting from a specified address in 
  *   a card.
  * @param addr: Address from where data are to be read.
  * @param writebuff: pointer to the buffer that contain the data to be
  *   transferred.
  * @param BlockSize: the SD card Data block size.
  * @param NumberOfBlocks: number of blocks to be written.
  * @retval : SD_Error: SD Card Error code.
  */
SD_Error SD_WriteMultiBlocks(uint32_t addr, uint32_t *writebuff, uint16_t BlockSize, uint32_t NumberOfBlocks)
{
  SD_Error errorstatus = SD_OK;
  uint8_t  power = 0, cardstate = 0;
  uint32_t bytestransferred = 0;
  uint32_t count = 0, restwords = 0;
  uint32_t *tempbuff = writebuff;

  if (writebuff == NULL)
  {
    errorstatus = SD_INVALID_PARAMETER;
    return(errorstatus);
  }

  TransferError = SD_OK;
  TransferEnd = 0;
  TotalNumberOfBytes = 0;

  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
  SDIO_DataInitStructure.SDIO_DataLength = 0;
  SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_1b;
  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Disable;
  SDIO_DataConfig(&SDIO_DataInitStructure);
  SDIO_DMACmd(DISABLE);

  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
  {
    errorstatus = SD_LOCK_UNLOCK_FAILED;
    return(errorstatus);
  }

  if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
  {
    BlockSize = 512;
    addr /= 512;
  }
  
  /* Set the block size, both on controller and card */
  if ((BlockSize > 0) && (BlockSize <= 2048) && ((BlockSize & (BlockSize - 1)) == 0))
  {
    power = convert_from_bytes_to_power_of_two(BlockSize);

    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;
    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_BLOCKLEN;
    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
    SDIO_SendCommand(&SDIO_CmdInitStructure);

    errorstatus = CmdResp1Error(SDIO_SET_BLOCKLEN);

    if (errorstatus != SD_OK)
    {
      return(errorstatus);
    }
  }
  else
  {
    errorstatus = SD_INVALID_PARAMETER;
    return(errorstatus);
  }

  /* Wait till card is ready for data Added */
  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) (RCA << 16);
  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_STATUS;
  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  SDIO_SendCommand(&SDIO_CmdInitStructure);

  errorstatus = CmdResp1Error(SDIO_SEND_STATUS);

  if (errorstatus != SD_OK)
  {
    return(errorstatus);
  }

  if (NumberOfBlocks > 1)
  {
    /* Common to all modes */
    if (NumberOfBlocks * BlockSize > SD_MAX_DATA_LENGTH)
    {
      errorstatus = SD_INVALID_PARAMETER;
      return(errorstatus);
    }

    if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
    {
      /* To improve performance */
      SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) (RCA << 16);
      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;
      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
      SDIO_SendCommand(&SDIO_CmdInitStructure);


      errorstatus = CmdResp1Error(SDIO_APP_CMD);

      if (errorstatus != SD_OK)
      {
        return(errorstatus);
      }
      /* To improve performance */
      SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)NumberOfBlocks;
      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_BLOCK_COUNT;
      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
      SDIO_SendCommand(&SDIO_CmdInitStructure);

      errorstatus = CmdResp1Error(SDIO_SET_BLOCK_COUNT);

      if (errorstatus != SD_OK)
      {
        return(errorstatus);
      }
    }

    /* Send CMD25 WRITE_MULT_BLOCK with argument data address */
    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)addr;
    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_WRITE_MULT_BLOCK;
    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
    SDIO_SendCommand(&SDIO_CmdInitStructure);

    errorstatus = CmdResp1Error(SDIO_WRITE_MULT_BLOCK);

    if (SD_OK != errorstatus)
    {
      return(errorstatus);
    }

    TotalNumberOfBytes = NumberOfBlocks * BlockSize;
    StopCondition = 1;
    SrcBuffer = writebuff;

    SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
    SDIO_DataInitStructure.SDIO_DataLength = NumberOfBlocks * BlockSize;
    SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) power << 4;
    SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
    SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
    SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
    SDIO_DataConfig(&SDIO_DataInitStructure);

    if (DeviceMode == SD_POLLING_MODE)
    {
      while (!(SDIO->STA & (SDIO_FLAG_TXUNDERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DATAEND | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_STBITERR)))
      {
        if (SDIO_GetFlagStatus(SDIO_FLAG_TXFIFOHE) != RESET)
        {
          if (!((TotalNumberOfBytes - bytestransferred) < SD_HALFFIFOBYTES))
          {
            for (count = 0; count < SD_HALFFIFO; count++)
            {
              SDIO_WriteData(*(tempbuff + count));
            }
            tempbuff += SD_HALFFIFO;
            bytestransferred += SD_HALFFIFOBYTES;
          }
          else
          {
            restwords = ((TotalNumberOfBytes - bytestransferred) % 4 == 0) ? ((TotalNumberOfBytes - bytestransferred) / 4) :
                        ((TotalNumberOfBytes - bytestransferred) / 4 + 1);

            for (count = 0; count < restwords; count++, tempbuff++, bytestransferred += 4)
            {
              SDIO_WriteData(*tempbuff);
            }
          }
        }
      }

      if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
      {
        SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
        errorstatus = SD_DATA_TIMEOUT;
        return(errorstatus);
      }
      else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
      {
        SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
        errorstatus = SD_DATA_CRC_FAIL;
        return(errorstatus);
      }
      else if (SDIO_GetFlagStatus(SDIO_FLAG_TXUNDERR) != RESET)
      {
        SDIO_ClearFlag(SDIO_FLAG_TXUNDERR);
        errorstatus = SD_TX_UNDERRUN;
        return(errorstatus);
      }
      else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
      {
        SDIO_ClearFlag(SDIO_FLAG_STBITERR);
        errorstatus = SD_START_BIT_ERR;
        return(errorstatus);
      }

      if (SDIO_GetFlagStatus(SDIO_FLAG_DATAEND) != RESET)
      {
       if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
        {
          /* Send CMD12 STOP_TRANSMISSION */
          SDIO_CmdInitStructure.SDIO_Argument = 0x0;
          SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_STOP_TRANSMISSION;
          SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;