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STM32的恒温消毒柜设计

  * @param  NumberOfBlocks: number of blocks to be written.
  * @retval SD_Error: SD Card Error code.
  */
  
  /*
 * 函数名：SD_WriteMultiBlocks
 * 描述  ：从输入的起始地址开始，向卡写入多个数据块，
 		  只能在DMA模式下使用这个函数
	注意：调用这个函数后一定要调用
			SD_WaitWriteOperation（）来等待DMA传输结束
			和	SD_GetStatus() 检测卡与SDIO的FIFO间是否已经完成传输
 * 输入  ： 
		  * @param  WriteAddr: 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. The Block size should be 512.
		  * @param  NumberOfBlocks: number of blocks to be written.
 * 输出  ：SD错误类型
 */
SD_Error SD_WriteMultiBlocks(uint8_t *writebuff, uint32_t WriteAddr, uint16_t BlockSize, uint32_t NumberOfBlocks)
{
  SD_Error errorstatus = SD_OK;
  __IO uint32_t count = 0;

  TransferError = SD_OK;
  TransferEnd = 0;
  StopCondition = 1;
  
  SDIO->DCTRL = 0x0;

  if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
  {
    BlockSize = 512;
    WriteAddr /= 512;
  }

    /*******************add，没有这一段容易卡死在DMA检测中*************************************/
    /*!< Set Block Size for Card，cmd16,若是sdsc卡，可以用来设置块大小，若是sdhc卡，块大小为512字节，不受cmd16影响 */
  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;
  SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;   //r1
  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  SDIO_SendCommand(&SDIO_CmdInitStructure);

  errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);

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

  /*!< To improve performance  */
  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) (RCA << 16);
  SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;	// cmd55
  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(SD_CMD_APP_CMD);

  if (errorstatus != SD_OK)
  {
    return(errorstatus);
  }
  /*!< To improve performance *///  pre-erased，在多块写入时可发送此命令进行预擦除
  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)NumberOfBlocks;  //参数为将要写入的块数目
  SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCK_COUNT;	 //cmd23
  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(SD_CMD_SET_BLOCK_COUNT);

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


  /*!< Send CMD25 WRITE_MULT_BLOCK with argument data address */
  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)WriteAddr;
  SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_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(SD_CMD_WRITE_MULT_BLOCK);

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

  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
  SDIO_DataInitStructure.SDIO_DataLength = NumberOfBlocks * BlockSize;
  SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) 9 << 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);

  SDIO_ITConfig(SDIO_IT_DATAEND, ENABLE);
  SDIO_DMACmd(ENABLE);    
  SD_DMA_TxConfig((uint32_t *)writebuff, (NumberOfBlocks * BlockSize));

  return(errorstatus);
}

/**
  * @brief  This function waits until the SDIO DMA data transfer is finished. 
  *         This function should be called after SDIO_WriteBlock() and
  *         SDIO_WriteMultiBlocks() function to insure that all data sent by the 
  *         card are already transferred by the DMA controller.        
  * @param  None.
  * @retval SD_Error: SD Card Error code.
  */
SD_Error SD_WaitWriteOperation(void)
{
  SD_Error errorstatus = SD_OK;
		  //等待dma是否传输结束
  while ((SD_DMAEndOfTransferStatus() == RESET) && (TransferEnd == 0) && (TransferError == SD_OK))
  {}

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

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

  return(errorstatus);
}

/**
  * @brief  Gets the cuurent data transfer state.
  * @param  None
  * @retval SDTransferState: Data Transfer state.
  *   This value can be: 
  *        - SD_TRANSFER_OK: No data transfer is acting
  *        - SD_TRANSFER_BUSY: Data transfer is acting
  */
SDTransferState SD_GetTransferState(void)
{
  if (SDIO->STA & (SDIO_FLAG_TXACT | SDIO_FLAG_RXACT))
  {
    return(SD_TRANSFER_BUSY);
  }
  else
  {
    return(SD_TRANSFER_OK);
  }
}

/**
  * @brief  Aborts an ongoing data transfer.
  * @param  None
  * @retval SD_Error: SD Card Error code.
  */
SD_Error SD_StopTransfer(void)
{
  SD_Error errorstatus = SD_OK;

  /*!< Send CMD12 STOP_TRANSMISSION  */
  SDIO->ARG = 0x0;
  SDIO->CMD = 0x44C;
  errorstatus = CmdResp1Error(SD_CMD_STOP_TRANSMISSION);

  return(errorstatus);
}

/**
  * @brief  Allows to erase memory area specified for the given card.
  * @param  startaddr: the start address.
  * @param  endaddr: the end address.
  * @retval SD_Error: SD Card Error code.
  */
SD_Error SD_Erase(uint32_t startaddr, uint32_t endaddr)
{
  SD_Error errorstatus = SD_OK;
  uint32_t delay = 0;
  __IO uint32_t maxdelay = 0;
  uint8_t cardstate = 0;

  /*!< Check if the card coomnd class supports erase command */
  if (((CSD_Tab[1] >> 20) & SD_CCCC_ERASE) == 0)
  {
    errorstatus = SD_REQUEST_NOT_APPLICABLE;
    return(errorstatus);
  }

  maxdelay = 120000 / ((SDIO->CLKCR & 0xFF) + 2);//延时，根据时钟分频设置来计算

  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)	  //卡已上锁
  {
    errorstatus = SD_LOCK_UNLOCK_FAILED;
    return(errorstatus);
  }

  if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)//sdhc卡，为什么要 /512？详见2.0协议page52
  {						//在sdhc卡，地址参数为块地址，每专块512字节，sdsc卡地址为字节地址
    startaddr /= 512;	  
    endaddr /= 512;
  }
  
  /*!< According to sd-card spec 1.0 ERASE_GROUP_START (CMD32) and erase_group_end(CMD33) */
  if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
  {
    /*!< Send CMD32 SD_ERASE_GRP_START with argument as addr  */
    SDIO_CmdInitStructure.SDIO_Argument = startaddr;
    SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_ERASE_GRP_START;
    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;	//R1
    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
    SDIO_SendCommand(&SDIO_CmdInitStructure);

    errorstatus = CmdResp1Error(SD_CMD_SD_ERASE_GRP_START);
    if (errorstatus != SD_OK)
    {
      return(errorstatus);
    }

    /*!< Send CMD33 SD_ERASE_GRP_END with argument as addr  */
    SDIO_CmdInitStructure.SDIO_Argument = endaddr;
    SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_ERASE_GRP_END;
    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(SD_CMD_SD_ERASE_GRP_END);
    if (errorstatus != SD_OK)
    {
      return(errorstatus);
    }
  }

  /*!< Send CMD38 ERASE */
  SDIO_CmdInitStructure.SDIO_Argument = 0;
  SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_ERASE;
  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(SD_CMD_ERASE);

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

  for (delay = 0; delay < maxdelay; delay++)
  {}

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

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

  return(errorstatus);
}

/**
  * @brief  Returns the current card's status.
  * @param  pcardstatus: pointer to the buffer that will contain the SD card 
  *         status (Card Status register).
  * @retval SD_Error: SD Card Error code.
  */
SD_Error SD_SendStatus(uint32_t *pcardstatus)
{
  SD_Error errorstatus = SD_OK;

  SDIO->ARG = (uint32_t) RCA << 16;
  SDIO->CMD = 0x44D;
  
  errorstatus = CmdResp1Error(SD_CMD_SEND_STATUS);

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

  *pcardstatus = SDIO->RESP1;
  return(errorstatus);
}

/**
  * @brief  Returns the current SD card's status.
  * @param  psdstatus: pointer to the buffer that will contain the SD card status 
  *         (SD Status register).
  * @retval SD_Error: SD Card Error code.
  */
SD_Error SD_SendSDStatus(uint32_t *psdstatus)
{
  SD_Error errorstatus = SD_OK;
  uint32_t count = 0;

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

  /*!< Set block size for card if it is not equal to current block size for card. */
  SDIO_CmdInitStructure.SDIO_Argument = 64;
  SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_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(SD_CMD_SET_BLOCKLEN);

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

  /*!< CMD55 */
  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
  SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_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(SD_CMD_APP_CMD);

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

  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
  SDIO_DataInitStructure.SDIO_DataLength = 64;
  SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_64b;
  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
  SDIO_DataConfig(&SDIO_DataInitStructure);

  /*!< Send ACMD13 SD_APP_STAUS  with argument as card's RCA.*/
  SDIO_CmdInitStructure.SDIO_Argument = 0;
  SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_APP_STAUS;
  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(SD_CMD_SD_APP_STAUS)