MMC Private Functions

Functions
static uint32_t	MMC_InitCard (MMC_HandleTypeDef *hmmc)
	Initializes the mmc card. More...
static uint32_t	MMC_PowerON (MMC_HandleTypeDef *hmmc)
	Enquires cards about their operating voltage and configures clock controls and stores MMC information that will be needed in future in the MMC handle. More...
static uint32_t	MMC_SendStatus (MMC_HandleTypeDef *hmmc, uint32_t *pCardStatus)
	Returns the current card's status. More...
static void	MMC_PowerOFF (MMC_HandleTypeDef *hmmc)
	Turns the SDMMC output signals off. More...
static void	MMC_Write_IT (MMC_HandleTypeDef *hmmc)
	Wrap up writing in non-blocking mode. More...
static void	MMC_Read_IT (MMC_HandleTypeDef *hmmc)
	Wrap up reading in non-blocking mode. More...
static void	MMC_DMATransmitCplt (DMA_HandleTypeDef *hdma)
	DMA MMC transmit process complete callback. More...
static void	MMC_DMAReceiveCplt (DMA_HandleTypeDef *hdma)
	DMA MMC receive process complete callback. More...
static void	MMC_DMAError (DMA_HandleTypeDef *hdma)
	DMA MMC communication error callback. More...
static void	MMC_DMATxAbort (DMA_HandleTypeDef *hdma)
	DMA MMC Tx Abort callback. More...
static void	MMC_DMARxAbort (DMA_HandleTypeDef *hdma)
	DMA MMC Rx Abort callback. More...
static HAL_StatusTypeDef	MMC_ReadExtCSD (MMC_HandleTypeDef *hmmc, uint32_t *pBlockNbr, uint32_t Timeout)
	Reads extended CSD register to get the sectors number of the device. More...

Detailed Description

Function Documentation

MMC_DMAError()

static void MMC_DMAError ( DMA_HandleTypeDef *  hdma )

static

DMA MMC communication error callback.

Parameters

hdma	DMA handle

Return values

None

Definition at line 2794 of file stm32l4xx_hal_mmc.c.

{
  MMC_HandleTypeDef* hmmc = (MMC_HandleTypeDef* )(hdma->Parent);
  HAL_MMC_CardStateTypeDef CardState;
  uint32_t RxErrorCode, TxErrorCode;
  
  RxErrorCode = hmmc->hdmarx->ErrorCode;
  TxErrorCode = hmmc->hdmatx->ErrorCode;  
  if((RxErrorCode == HAL_DMA_ERROR_TE) || (TxErrorCode == HAL_DMA_ERROR_TE))
  {
    /* Clear All flags */
    __HAL_MMC_CLEAR_FLAG(hmmc, SDMMC_STATIC_FLAGS);
      
    /* Disable All interrupts */
    __HAL_MMC_DISABLE_IT(hmmc, SDMMC_IT_DATAEND | SDMMC_IT_DCRCFAIL | SDMMC_IT_DTIMEOUT|\
      SDMMC_IT_TXUNDERR| SDMMC_IT_RXOVERR);
      
    hmmc->ErrorCode |= HAL_MMC_ERROR_DMA;
    CardState = HAL_MMC_GetCardState(hmmc);
    if((CardState == HAL_MMC_CARD_RECEIVING) || (CardState == HAL_MMC_CARD_SENDING))
    {
      hmmc->ErrorCode |= SDMMC_CmdStopTransfer(hmmc->Instance);
    }
      
    hmmc->State= HAL_MMC_STATE_READY;
  }
    
#if defined (USE_HAL_MMC_REGISTER_CALLBACKS) && (USE_HAL_MMC_REGISTER_CALLBACKS == 1U)
  hmmc->ErrorCallback(hmmc);
#else
  HAL_MMC_ErrorCallback(hmmc);
#endif
  }

MMC_DMAReceiveCplt()

static void MMC_DMAReceiveCplt ( DMA_HandleTypeDef *  hdma )

static

DMA MMC receive process complete callback.

Parameters

hdma	DMA handle

Return values

None

Definition at line 2753 of file stm32l4xx_hal_mmc.c.

{
  MMC_HandleTypeDef* hmmc = (MMC_HandleTypeDef* )(hdma->Parent);
  uint32_t errorstate;
  
  /* Send stop command in multiblock write */
  if(hmmc->Context == (MMC_CONTEXT_READ_MULTIPLE_BLOCK | MMC_CONTEXT_DMA))
  {
    errorstate = SDMMC_CmdStopTransfer(hmmc->Instance);
    if(errorstate != HAL_MMC_ERROR_NONE)
    {
      hmmc->ErrorCode |= errorstate;
#if defined (USE_HAL_MMC_REGISTER_CALLBACKS) && (USE_HAL_MMC_REGISTER_CALLBACKS == 1U)
      hmmc->ErrorCallback(hmmc);
#else
      HAL_MMC_ErrorCallback(hmmc);
#endif
    }
  }
  
  /* Disable the DMA transfer for transmit request by setting the DMAEN bit
  in the MMC DCTRL register */
  hmmc->Instance->DCTRL &= (uint32_t)~((uint32_t)SDMMC_DCTRL_DMAEN);
  
  /* Clear all the static flags */
  __HAL_MMC_CLEAR_FLAG(hmmc, SDMMC_STATIC_DATA_FLAGS);
  
  hmmc->State = HAL_MMC_STATE_READY;

#if defined (USE_HAL_MMC_REGISTER_CALLBACKS) && (USE_HAL_MMC_REGISTER_CALLBACKS == 1U)
  hmmc->RxCpltCallback(hmmc);
#else
  HAL_MMC_RxCpltCallback(hmmc);
#endif
}

MMC_DMARxAbort()

static void MMC_DMARxAbort ( DMA_HandleTypeDef *  hdma )

static

DMA MMC Rx Abort callback.

Parameters

hdma	DMA handle

Return values

None

Definition at line 2878 of file stm32l4xx_hal_mmc.c.

{
  MMC_HandleTypeDef* hmmc = (MMC_HandleTypeDef* )(hdma->Parent);
  HAL_MMC_CardStateTypeDef CardState;
  
  if(hmmc->hdmarx != NULL)
  {
    hmmc->hdmarx = NULL;
  }
  
  /* All DMA channels are aborted */
  if(hmmc->hdmatx == NULL)
  {
    CardState = HAL_MMC_GetCardState(hmmc);
    hmmc->ErrorCode = HAL_MMC_ERROR_NONE;
    hmmc->State = HAL_MMC_STATE_READY;
    if((CardState == HAL_MMC_CARD_RECEIVING) || (CardState == HAL_MMC_CARD_SENDING))
    {
      hmmc->ErrorCode |= SDMMC_CmdStopTransfer(hmmc->Instance);
      
      if(hmmc->ErrorCode != HAL_MMC_ERROR_NONE)
      {
#if defined (USE_HAL_MMC_REGISTER_CALLBACKS) && (USE_HAL_MMC_REGISTER_CALLBACKS == 1U)
        hmmc->AbortCpltCallback(hmmc);
#else
        HAL_MMC_AbortCallback(hmmc);
#endif
      }
      else
      {
#if defined (USE_HAL_MMC_REGISTER_CALLBACKS) && (USE_HAL_MMC_REGISTER_CALLBACKS == 1U)
        hmmc->ErrorCallback(hmmc);
#else
        HAL_MMC_ErrorCallback(hmmc);
#endif
      }
    }
  }
}

MMC_DMATransmitCplt()

static void MMC_DMATransmitCplt ( DMA_HandleTypeDef *  hdma )

static

DMA MMC transmit process complete callback.

Parameters

hdma	DMA handle

Return values

None

Definition at line 2740 of file stm32l4xx_hal_mmc.c.

{
  MMC_HandleTypeDef* hmmc = (MMC_HandleTypeDef* )(hdma->Parent);
  
  /* Enable DATAEND Interrupt */
  __HAL_MMC_ENABLE_IT(hmmc, (SDMMC_IT_DATAEND));
}

MMC_DMATxAbort()

static void MMC_DMATxAbort ( DMA_HandleTypeDef *  hdma )

static

DMA MMC Tx Abort callback.

Parameters

hdma	DMA handle

Return values

None

Definition at line 2833 of file stm32l4xx_hal_mmc.c.

{
  MMC_HandleTypeDef* hmmc = (MMC_HandleTypeDef* )(hdma->Parent);
  HAL_MMC_CardStateTypeDef CardState;
  
  if(hmmc->hdmatx != NULL)
  {
    hmmc->hdmatx = NULL;
  }
  
  /* All DMA channels are aborted */
  if(hmmc->hdmarx == NULL)
  {
    CardState = HAL_MMC_GetCardState(hmmc);
    hmmc->ErrorCode = HAL_MMC_ERROR_NONE;
    hmmc->State = HAL_MMC_STATE_READY;
    if((CardState == HAL_MMC_CARD_RECEIVING) || (CardState == HAL_MMC_CARD_SENDING))
    {
      hmmc->ErrorCode |= SDMMC_CmdStopTransfer(hmmc->Instance);
      
      if(hmmc->ErrorCode != HAL_MMC_ERROR_NONE)
      {
#if defined (USE_HAL_MMC_REGISTER_CALLBACKS) && (USE_HAL_MMC_REGISTER_CALLBACKS == 1U)
        hmmc->AbortCpltCallback(hmmc);
#else
        HAL_MMC_AbortCallback(hmmc);
#endif
      }
      else
      {
#if defined (USE_HAL_MMC_REGISTER_CALLBACKS) && (USE_HAL_MMC_REGISTER_CALLBACKS == 1U)
        hmmc->ErrorCallback(hmmc);
#else
        HAL_MMC_ErrorCallback(hmmc);
#endif
      }
    }
  }
}

MMC_InitCard()

static uint32_t MMC_InitCard ( MMC_HandleTypeDef *  hmmc )

static

Initializes the mmc card.

Parameters

hmmc	Pointer to MMC handle

Return values

MMC	Card error state

Definition at line 2924 of file stm32l4xx_hal_mmc.c.

{
  HAL_MMC_CardCSDTypeDef CSD;
  uint32_t errorstate;
  uint16_t mmc_rca = 1U;
#if defined(STM32L4R5xx) || defined(STM32L4R7xx) || defined(STM32L4R9xx) || defined(STM32L4S5xx) || defined(STM32L4S7xx) || defined(STM32L4S9xx)
  MMC_InitTypeDef Init;
#endif

  /* Check the power State */
  if(SDMMC_GetPowerState(hmmc->Instance) == 0U)
  {
    /* Power off */
    return HAL_MMC_ERROR_REQUEST_NOT_APPLICABLE;
  }

  /* Send CMD2 ALL_SEND_CID */
  errorstate = SDMMC_CmdSendCID(hmmc->Instance);
  if(errorstate != HAL_MMC_ERROR_NONE)
  {
    return errorstate;
  }
  else
  {
    /* Get Card identification number data */
    hmmc->CID[0U] = SDMMC_GetResponse(hmmc->Instance, SDMMC_RESP1);
    hmmc->CID[1U] = SDMMC_GetResponse(hmmc->Instance, SDMMC_RESP2);
    hmmc->CID[2U] = SDMMC_GetResponse(hmmc->Instance, SDMMC_RESP3);
    hmmc->CID[3U] = SDMMC_GetResponse(hmmc->Instance, SDMMC_RESP4);
  }

  /* Send CMD3 SET_REL_ADDR with argument 0 */
  /* MMC Card publishes its RCA. */
  errorstate = SDMMC_CmdSetRelAdd(hmmc->Instance, &mmc_rca);
  if(errorstate != HAL_MMC_ERROR_NONE)
  {
    return errorstate;
  }

  /* Get the MMC card RCA */
  hmmc->MmcCard.RelCardAdd = mmc_rca;

  /* Send CMD9 SEND_CSD with argument as card's RCA */
  errorstate = SDMMC_CmdSendCSD(hmmc->Instance, (uint32_t)(hmmc->MmcCard.RelCardAdd << 16U));
  if(errorstate != HAL_MMC_ERROR_NONE)
  {
    return errorstate;
  }
  else
  {
    /* Get Card Specific Data */
    hmmc->CSD[0U] = SDMMC_GetResponse(hmmc->Instance, SDMMC_RESP1);
    hmmc->CSD[1U] = SDMMC_GetResponse(hmmc->Instance, SDMMC_RESP2);
    hmmc->CSD[2U] = SDMMC_GetResponse(hmmc->Instance, SDMMC_RESP3);
    hmmc->CSD[3U] = SDMMC_GetResponse(hmmc->Instance, SDMMC_RESP4);
  }

  /* Get the Card Class */
  hmmc->MmcCard.Class = (SDMMC_GetResponse(hmmc->Instance, SDMMC_RESP2) >> 20U);

#if !defined(STM32L4R5xx) && !defined(STM32L4R7xx) && !defined(STM32L4R9xx) && !defined(STM32L4S5xx) && !defined(STM32L4S7xx) && !defined(STM32L4S9xx)
  /* Get CSD parameters */
  if (HAL_MMC_GetCardCSD(hmmc, &CSD) != HAL_OK)
  {
    return hmmc->ErrorCode;
  }

  /* Select the Card */
  errorstate = SDMMC_CmdSelDesel(hmmc->Instance, (uint32_t)(((uint32_t)hmmc->MmcCard.RelCardAdd) << 16U));
  if(errorstate != HAL_MMC_ERROR_NONE)
  {
    return errorstate;
  }

  /* Configure SDMMC peripheral interface */
  (void)SDMMC_Init(hmmc->Instance, hmmc->Init);
#else
   /* Select the Card */
  errorstate = SDMMC_CmdSelDesel(hmmc->Instance, (uint32_t)(((uint32_t)hmmc->MmcCard.RelCardAdd) << 16U));
  if(errorstate != HAL_MMC_ERROR_NONE)
  {
    return errorstate;
  }

  /* Get CSD parameters */
  if (HAL_MMC_GetCardCSD(hmmc, &CSD) != HAL_OK)
  {
    return hmmc->ErrorCode;
  }

  /* While card is not ready for data and trial number for sending CMD13 is not exceeded */
  errorstate = SDMMC_CmdSendStatus(hmmc->Instance, (uint32_t)(((uint32_t)hmmc->MmcCard.RelCardAdd) << 16U));
  if(errorstate != HAL_MMC_ERROR_NONE)
  {
    hmmc->ErrorCode |= errorstate;
  }

  /* Configure the SDMMC peripheral */
  Init.ClockEdge           = hmmc->Init.ClockEdge;
  Init.ClockPowerSave      = hmmc->Init.ClockPowerSave;
  Init.BusWide             = SDMMC_BUS_WIDE_1B;
  Init.HardwareFlowControl = hmmc->Init.HardwareFlowControl;
  Init.ClockDiv            = hmmc->Init.ClockDiv;
  (void)SDMMC_Init(hmmc->Instance, Init);
#endif

  /* All cards are initialized */
  return HAL_MMC_ERROR_NONE;
}

MMC_PowerOFF()

static void MMC_PowerOFF ( MMC_HandleTypeDef *  hmmc )

static

Turns the SDMMC output signals off.

Parameters

hmmc	Pointer to MMC handle

Return values

None

Definition at line 3093 of file stm32l4xx_hal_mmc.c.

{
  /* Set Power State to OFF */
  (void)SDMMC_PowerState_OFF(hmmc->Instance);
}

MMC_PowerON()

static uint32_t MMC_PowerON ( MMC_HandleTypeDef *  hmmc )

static

Enquires cards about their operating voltage and configures clock controls and stores MMC information that will be needed in future in the MMC handle.

Parameters

hmmc	Pointer to MMC handle

Return values

error

state

Definition at line 3041 of file stm32l4xx_hal_mmc.c.

{
  __IO uint32_t count = 0U;
  uint32_t response = 0U, validvoltage = 0U;
  uint32_t errorstate;

  /* CMD0: GO_IDLE_STATE */
  errorstate = SDMMC_CmdGoIdleState(hmmc->Instance);
  if(errorstate != HAL_MMC_ERROR_NONE)
  {
    return errorstate;
  }

  while(validvoltage == 0U)
  {
    if(count++ == SDMMC_MAX_VOLT_TRIAL)
    {
      return HAL_MMC_ERROR_INVALID_VOLTRANGE;
    }

    /* SEND CMD1 APP_CMD with MMC_HIGH_VOLTAGE_RANGE(0xC0FF8000) as argument */
    errorstate = SDMMC_CmdOpCondition(hmmc->Instance, eMMC_HIGH_VOLTAGE_RANGE);
    if(errorstate != HAL_MMC_ERROR_NONE)
    {
      return HAL_MMC_ERROR_UNSUPPORTED_FEATURE;
    }

    /* Get command response */
    response = SDMMC_GetResponse(hmmc->Instance, SDMMC_RESP1);

    /* Get operating voltage*/
    validvoltage = (((response >> 31U) == 1U) ? 1U : 0U);
  }

  /* When power routine is finished and command returns valid voltage */
  if (((response & (0xFF000000U)) >> 24) == 0xC0U)
  {
    hmmc->MmcCard.CardType = MMC_HIGH_CAPACITY_CARD;
  }
  else
  {
    hmmc->MmcCard.CardType = MMC_LOW_CAPACITY_CARD;
  }

  return HAL_MMC_ERROR_NONE;
}

MMC_Read_IT()

static void MMC_Read_IT ( MMC_HandleTypeDef *  hmmc )

static

Wrap up reading in non-blocking mode.

Parameters

hmmc	pointer to a MMC_HandleTypeDef structure that contains the configuration information.

Return values

None

Definition at line 3239 of file stm32l4xx_hal_mmc.c.

{
  uint32_t count, data, dataremaining;
  uint8_t* tmp;

  tmp = hmmc->pRxBuffPtr;
  dataremaining = hmmc->RxXferSize;

  if (dataremaining > 0U)
  {
    /* Read data from SDMMC Rx FIFO */
    for(count = 0U; count < 8U; count++)
    {
      data = SDMMC_ReadFIFO(hmmc->Instance);
      *tmp = (uint8_t)(data & 0xFFU);
      tmp++;
      dataremaining--;
      *tmp = (uint8_t)((data >> 8U) & 0xFFU);
      tmp++;
      dataremaining--;
      *tmp = (uint8_t)((data >> 16U) & 0xFFU);
      tmp++;
      dataremaining--;
      *tmp = (uint8_t)((data >> 24U) & 0xFFU);
      tmp++;
      dataremaining--;
    }

    hmmc->pRxBuffPtr = tmp;
    hmmc->RxXferSize = dataremaining;
  }
}

MMC_ReadExtCSD()

HAL_StatusTypeDef MMC_ReadExtCSD ( MMC_HandleTypeDef *  hmmc, uint32_t *  pBlockNbr, uint32_t  Timeout  )

static

Reads extended CSD register to get the sectors number of the device.

Parameters

hmmc	Pointer to MMC handle
pBlockNbr	Pointer to the read buffer
Timeout	Specify timeout value

Return values

HAL

status

Definition at line 3136 of file stm32l4xx_hal_mmc.c.

{
  SDMMC_DataInitTypeDef config;
  uint32_t errorstate;
  uint32_t tickstart = HAL_GetTick();
  uint32_t count;
  uint32_t i = 0;
  uint32_t tmp_data;

  hmmc->ErrorCode = HAL_MMC_ERROR_NONE;

  /* Initialize data control register */
  hmmc->Instance->DCTRL = 0;

  /* Configure the MMC DPSM (Data Path State Machine) */
  config.DataTimeOut   = SDMMC_DATATIMEOUT;
  config.DataLength    = 0;
  config.DataBlockSize = SDMMC_DATABLOCK_SIZE_1B;
  config.TransferDir   = SDMMC_TRANSFER_DIR_TO_SDMMC;
  config.TransferMode  = SDMMC_TRANSFER_MODE_BLOCK;
  config.DPSM          = SDMMC_DPSM_DISABLE;
  (void)SDMMC_ConfigData(hmmc->Instance, &config);

  /* Set Block Size for Card */
  errorstate = SDMMC_CmdBlockLength(hmmc->Instance, MMC_BLOCKSIZE);
  if(errorstate != HAL_MMC_ERROR_NONE)
  {
    /* Clear all the static flags */
    __HAL_MMC_CLEAR_FLAG(hmmc, SDMMC_STATIC_FLAGS);
    hmmc->ErrorCode |= errorstate;
    hmmc->State = HAL_MMC_STATE_READY;
    return HAL_ERROR;
  }

  /* Configure the MMC DPSM (Data Path State Machine) */
  config.DataTimeOut   = SDMMC_DATATIMEOUT;
  config.DataLength    = 512;
  config.DataBlockSize = SDMMC_DATABLOCK_SIZE_512B;
  config.TransferDir   = SDMMC_TRANSFER_DIR_TO_SDMMC;
  config.TransferMode  = SDMMC_TRANSFER_MODE_BLOCK;
  config.DPSM          = SDMMC_DPSM_ENABLE;
  (void)SDMMC_ConfigData(hmmc->Instance, &config);

  /* Set Block Size for Card */
  errorstate = SDMMC_CmdSendEXTCSD(hmmc->Instance, 0);
  if(errorstate != HAL_MMC_ERROR_NONE)
  {
    /* Clear all the static flags */
    __HAL_MMC_CLEAR_FLAG(hmmc, SDMMC_STATIC_FLAGS);
    hmmc->ErrorCode |= errorstate;
    hmmc->State = HAL_MMC_STATE_READY;
    return HAL_ERROR;
  }

  /* Poll on SDMMC flags */
  while(!__HAL_MMC_GET_FLAG(hmmc, SDMMC_FLAG_RXOVERR | SDMMC_FLAG_DCRCFAIL | SDMMC_FLAG_DTIMEOUT | SDMMC_FLAG_DATAEND))
  {
    if(__HAL_MMC_GET_FLAG(hmmc, SDMMC_FLAG_RXFIFOHF))
    {
      /* Read data from SDMMC Rx FIFO */
      for(count = 0U; count < 8U; count++)
      {
        tmp_data = SDMMC_ReadFIFO(hmmc->Instance);
        if ((i == 48U) && (count == 5U))
        {
          *pBlockNbr = tmp_data;
        }
      }
      i += 8U;
    }

    if(((HAL_GetTick()-tickstart) >=  Timeout) || (Timeout == 0U))
    {
      /* Clear all the static flags */
      __HAL_MMC_CLEAR_FLAG(hmmc, SDMMC_STATIC_FLAGS);
      hmmc->ErrorCode |= HAL_MMC_ERROR_TIMEOUT;
      hmmc->State= HAL_MMC_STATE_READY;
      return HAL_TIMEOUT;
    }
  }

  /* While card is not ready for data and trial number for sending CMD13 is not exceeded */
  errorstate = SDMMC_CmdSendStatus(hmmc->Instance, (uint32_t)(((uint32_t)hmmc->MmcCard.RelCardAdd) << 16));
  if(errorstate != HAL_MMC_ERROR_NONE)
  {
    hmmc->ErrorCode |= errorstate;
  }

  /* Clear all the static flags */
  __HAL_MMC_CLEAR_FLAG(hmmc, SDMMC_STATIC_DATA_FLAGS);

  hmmc->State = HAL_MMC_STATE_READY;

  return HAL_OK;
}

MMC_SendStatus()

static uint32_t MMC_SendStatus ( MMC_HandleTypeDef *  hmmc, uint32_t *  pCardStatus  )

static

Returns the current card's status.

Parameters

hmmc	Pointer to MMC handle
pCardStatus	pointer to the buffer that will contain the MMC card status (Card Status register)

Return values

error

state

Definition at line 3106 of file stm32l4xx_hal_mmc.c.

{
  uint32_t errorstate;

  if(pCardStatus == NULL)
  {
    return HAL_MMC_ERROR_PARAM;
  }

  /* Send Status command */
  errorstate = SDMMC_CmdSendStatus(hmmc->Instance, (uint32_t)(hmmc->MmcCard.RelCardAdd << 16U));
  if(errorstate != HAL_MMC_ERROR_NONE)
  {
    return errorstate;
  }

  /* Get MMC card status */
  *pCardStatus = SDMMC_GetResponse(hmmc->Instance, SDMMC_RESP1);

  return HAL_MMC_ERROR_NONE;
}

MMC_Write_IT()

static void MMC_Write_IT ( MMC_HandleTypeDef *  hmmc )

static

Wrap up writing in non-blocking mode.

Parameters

hmmc	pointer to a MMC_HandleTypeDef structure that contains the configuration information.

Return values

None

Definition at line 3278 of file stm32l4xx_hal_mmc.c.

{
  uint32_t count, data, dataremaining;
  uint8_t* tmp;

  tmp = hmmc->pTxBuffPtr;
  dataremaining = hmmc->TxXferSize;

  if (dataremaining > 0U)
  {
    /* Write data to SDMMC Tx FIFO */
    for(count = 0U; count < 8U; count++)
    {
      data = (uint32_t)(*tmp);
      tmp++;
      dataremaining--;
      data |= ((uint32_t)(*tmp) << 8U);
      tmp++;
      dataremaining--;
      data |= ((uint32_t)(*tmp) << 16U);
      tmp++;
      dataremaining--;
      data |= ((uint32_t)(*tmp) << 24U);
      tmp++;
      dataremaining--;
      (void)SDMMC_WriteFIFO(hmmc->Instance, &data);
    }

    hmmc->pTxBuffPtr = tmp;
    hmmc->TxXferSize = dataremaining;
  }
}