IO operation functions

SMARTCARD Transmit and Receive functions. More...

Functions
HAL_StatusTypeDef	HAL_SMARTCARD_Transmit (SMARTCARD_HandleTypeDef *hsmartcard, uint8_t *pData, uint16_t Size, uint32_t Timeout)
	Send an amount of data in blocking mode. More...
HAL_StatusTypeDef	HAL_SMARTCARD_Receive (SMARTCARD_HandleTypeDef *hsmartcard, uint8_t *pData, uint16_t Size, uint32_t Timeout)
	Receive an amount of data in blocking mode. More...
HAL_StatusTypeDef	HAL_SMARTCARD_Transmit_IT (SMARTCARD_HandleTypeDef *hsmartcard, uint8_t *pData, uint16_t Size)
	Send an amount of data in interrupt mode. More...
HAL_StatusTypeDef	HAL_SMARTCARD_Receive_IT (SMARTCARD_HandleTypeDef *hsmartcard, uint8_t *pData, uint16_t Size)
	Receive an amount of data in interrupt mode. More...
HAL_StatusTypeDef	HAL_SMARTCARD_Transmit_DMA (SMARTCARD_HandleTypeDef *hsmartcard, uint8_t *pData, uint16_t Size)
	Send an amount of data in DMA mode. More...
HAL_StatusTypeDef	HAL_SMARTCARD_Receive_DMA (SMARTCARD_HandleTypeDef *hsmartcard, uint8_t *pData, uint16_t Size)
	Receive an amount of data in DMA mode. More...
HAL_StatusTypeDef	HAL_SMARTCARD_Abort (SMARTCARD_HandleTypeDef *hsmartcard)
	Abort ongoing transfers (blocking mode). More...
HAL_StatusTypeDef	HAL_SMARTCARD_AbortTransmit (SMARTCARD_HandleTypeDef *hsmartcard)
	Abort ongoing Transmit transfer (blocking mode). More...
HAL_StatusTypeDef	HAL_SMARTCARD_AbortReceive (SMARTCARD_HandleTypeDef *hsmartcard)
	Abort ongoing Receive transfer (blocking mode). More...
HAL_StatusTypeDef	HAL_SMARTCARD_Abort_IT (SMARTCARD_HandleTypeDef *hsmartcard)
	Abort ongoing transfers (Interrupt mode). More...
HAL_StatusTypeDef	HAL_SMARTCARD_AbortTransmit_IT (SMARTCARD_HandleTypeDef *hsmartcard)
	Abort ongoing Transmit transfer (Interrupt mode). More...
HAL_StatusTypeDef	HAL_SMARTCARD_AbortReceive_IT (SMARTCARD_HandleTypeDef *hsmartcard)
	Abort ongoing Receive transfer (Interrupt mode). More...
void	HAL_SMARTCARD_IRQHandler (SMARTCARD_HandleTypeDef *hsmartcard)
	Handle SMARTCARD interrupt requests. More...
void	HAL_SMARTCARD_TxCpltCallback (SMARTCARD_HandleTypeDef *hsmartcard)
	Tx Transfer completed callback. More...
void	HAL_SMARTCARD_RxCpltCallback (SMARTCARD_HandleTypeDef *hsmartcard)
	Rx Transfer completed callback. More...
void	HAL_SMARTCARD_ErrorCallback (SMARTCARD_HandleTypeDef *hsmartcard)
	SMARTCARD error callback. More...
void	HAL_SMARTCARD_AbortCpltCallback (SMARTCARD_HandleTypeDef *hsmartcard)
	SMARTCARD Abort Complete callback. More...
void	HAL_SMARTCARD_AbortTransmitCpltCallback (SMARTCARD_HandleTypeDef *hsmartcard)
	SMARTCARD Abort Complete callback. More...
void	HAL_SMARTCARD_AbortReceiveCpltCallback (SMARTCARD_HandleTypeDef *hsmartcard)
	SMARTCARD Abort Receive Complete callback. More...

Detailed Description

SMARTCARD Transmit and Receive functions.

  ==============================================================================
                         ##### IO operation functions #####
  ==============================================================================
  [..]
    This subsection provides a set of functions allowing to manage the SMARTCARD data transfers.

  [..]
    Smartcard is a single wire half duplex communication protocol.
    The Smartcard interface is designed to support asynchronous protocol Smartcards as
    defined in the ISO 7816-3 standard. The USART should be configured as:
    (+) 8 bits plus parity: where M=1 and PCE=1 in the USART_CR1 register
    (+) 1.5 stop bits when transmitting and receiving: where STOP=11 in the USART_CR2 register.

  [..]
    (+) There are two modes of transfer:
        (++) Blocking mode: The communication is performed in polling mode.
             The HAL status of all data processing is returned by the same function
             after finishing transfer.
        (++) Non-Blocking mode: The communication is performed using Interrupts
             or DMA, the relevant API's return the HAL status.
             The end of the data processing will be indicated through the
             dedicated SMARTCARD IRQ when using Interrupt mode or the DMA IRQ when
             using DMA mode.
        (++) The HAL_SMARTCARD_TxCpltCallback(), HAL_SMARTCARD_RxCpltCallback() user callbacks
             will be executed respectively at the end of the Transmit or Receive process
             The HAL_SMARTCARD_ErrorCallback() user callback will be executed when a communication
             error is detected.

    (+) Blocking mode APIs are :
        (++) HAL_SMARTCARD_Transmit()
        (++) HAL_SMARTCARD_Receive()

    (+) Non Blocking mode APIs with Interrupt are :
        (++) HAL_SMARTCARD_Transmit_IT()
        (++) HAL_SMARTCARD_Receive_IT()
        (++) HAL_SMARTCARD_IRQHandler()

    (+) Non Blocking mode functions with DMA are :
        (++) HAL_SMARTCARD_Transmit_DMA()
        (++) HAL_SMARTCARD_Receive_DMA()

    (+) A set of Transfer Complete Callbacks are provided in non Blocking mode:
        (++) HAL_SMARTCARD_TxCpltCallback()
        (++) HAL_SMARTCARD_RxCpltCallback()
        (++) HAL_SMARTCARD_ErrorCallback()

    (#) Non-Blocking mode transfers could be aborted using Abort API's :
        (+) HAL_SMARTCARD_Abort()
        (+) HAL_SMARTCARD_AbortTransmit()
        (+) HAL_SMARTCARD_AbortReceive()
        (+) HAL_SMARTCARD_Abort_IT()
        (+) HAL_SMARTCARD_AbortTransmit_IT()
        (+) HAL_SMARTCARD_AbortReceive_IT()

    (#) For Abort services based on interrupts (HAL_SMARTCARD_Abortxxx_IT), a set of Abort Complete Callbacks are provided:
        (+) HAL_SMARTCARD_AbortCpltCallback()
        (+) HAL_SMARTCARD_AbortTransmitCpltCallback()
        (+) HAL_SMARTCARD_AbortReceiveCpltCallback()

    (#) In Non-Blocking mode transfers, possible errors are split into 2 categories.
        Errors are handled as follows :
       (+) Error is considered as Recoverable and non blocking : Transfer could go till end, but error severity is
           to be evaluated by user : this concerns Frame Error, Parity Error or Noise Error in Interrupt mode reception .
           Received character is then retrieved and stored in Rx buffer, Error code is set to allow user to identify error type,
           and HAL_SMARTCARD_ErrorCallback() user callback is executed. Transfer is kept ongoing on SMARTCARD side.
           If user wants to abort it, Abort services should be called by user.
       (+) Error is considered as Blocking : Transfer could not be completed properly and is aborted.
           This concerns Frame Error in Interrupt mode tranmission, Overrun Error in Interrupt mode reception and all errors in DMA mode.
           Error code is set to allow user to identify error type, and HAL_SMARTCARD_ErrorCallback() user callback is executed.

Function Documentation

HAL_SMARTCARD_Abort()

HAL_StatusTypeDef HAL_SMARTCARD_Abort

(

SMARTCARD_HandleTypeDef *

hsmartcard

)

Abort ongoing transfers (blocking mode).

Parameters

hsmartcard

Pointer to a SMARTCARD_HandleTypeDef structure that contains the configuration information for the specified SMARTCARD module.

Note

This procedure could be used for aborting any ongoing transfer started in Interrupt or DMA mode. This procedure performs following operations :

• Disable SMARTCARD Interrupts (Tx and Rx)
• Disable the DMA transfer in the peripheral register (if enabled)
• Abort DMA transfer by calling HAL_DMA_Abort (in case of transfer in DMA mode)
• Set handle State to READY

This procedure is executed in blocking mode : when exiting function, Abort is considered as completed.

Return values

HAL

status

Definition at line 1318 of file stm32l4xx_hal_smartcard.c.

{
#if defined(USART_CR1_FIFOEN)
  /* Disable RTOIE, EOBIE, TXEIE, TCIE, RXNE, PE, RXFT, TXFT and ERR (Frame error, noise error, overrun error) interrupts */
  CLEAR_BIT(hsmartcard->Instance->CR1,
            (USART_CR1_RXNEIE_RXFNEIE | USART_CR1_PEIE | USART_CR1_TXEIE_TXFNFIE | USART_CR1_TCIE | USART_CR1_RTOIE |
             USART_CR1_EOBIE));
  CLEAR_BIT(hsmartcard->Instance->CR3, (USART_CR3_EIE | USART_CR3_RXFTIE | USART_CR3_TXFTIE));
#else
  /* Disable RTOIE, EOBIE, TXEIE, TCIE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
  CLEAR_BIT(hsmartcard->Instance->CR1,
            (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE | USART_CR1_TCIE | USART_CR1_RTOIE | USART_CR1_EOBIE));
  CLEAR_BIT(hsmartcard->Instance->CR3, USART_CR3_EIE);
#endif /* USART_CR1_FIFOEN */

  /* Disable the SMARTCARD DMA Tx request if enabled */
  if (HAL_IS_BIT_SET(hsmartcard->Instance->CR3, USART_CR3_DMAT))
  {
    CLEAR_BIT(hsmartcard->Instance->CR3, USART_CR3_DMAT);

    /* Abort the SMARTCARD DMA Tx channel : use blocking DMA Abort API (no callback) */
    if (hsmartcard->hdmatx != NULL)
    {
      /* Set the SMARTCARD DMA Abort callback to Null.
         No call back execution at end of DMA abort procedure */
      hsmartcard->hdmatx->XferAbortCallback = NULL;

      if (HAL_DMA_Abort(hsmartcard->hdmatx) != HAL_OK)
      {
        if (HAL_DMA_GetError(hsmartcard->hdmatx) == HAL_DMA_ERROR_TIMEOUT)
        {
          /* Set error code to DMA */
          hsmartcard->ErrorCode = HAL_SMARTCARD_ERROR_DMA;

          return HAL_TIMEOUT;
        }
      }
    }
  }

  /* Disable the SMARTCARD DMA Rx request if enabled */
  if (HAL_IS_BIT_SET(hsmartcard->Instance->CR3, USART_CR3_DMAR))
  {
    CLEAR_BIT(hsmartcard->Instance->CR3, USART_CR3_DMAR);

    /* Abort the SMARTCARD DMA Rx channel : use blocking DMA Abort API (no callback) */
    if (hsmartcard->hdmarx != NULL)
    {
      /* Set the SMARTCARD DMA Abort callback to Null.
         No call back execution at end of DMA abort procedure */
      hsmartcard->hdmarx->XferAbortCallback = NULL;

      if (HAL_DMA_Abort(hsmartcard->hdmarx) != HAL_OK)
      {
        if (HAL_DMA_GetError(hsmartcard->hdmarx) == HAL_DMA_ERROR_TIMEOUT)
        {
          /* Set error code to DMA */
          hsmartcard->ErrorCode = HAL_SMARTCARD_ERROR_DMA;

          return HAL_TIMEOUT;
        }
      }
    }
  }

  /* Reset Tx and Rx transfer counters */
  hsmartcard->TxXferCount = 0U;
  hsmartcard->RxXferCount = 0U;

  /* Clear the Error flags in the ICR register */
  __HAL_SMARTCARD_CLEAR_FLAG(hsmartcard,
                             SMARTCARD_CLEAR_OREF | SMARTCARD_CLEAR_NEF | SMARTCARD_CLEAR_PEF | SMARTCARD_CLEAR_FEF | SMARTCARD_CLEAR_RTOF |
                             SMARTCARD_CLEAR_EOBF);

  /* Restore hsmartcard->gState and hsmartcard->RxState to Ready */
  hsmartcard->gState  = HAL_SMARTCARD_STATE_READY;
  hsmartcard->RxState = HAL_SMARTCARD_STATE_READY;

  /* Reset Handle ErrorCode to No Error */
  hsmartcard->ErrorCode = HAL_SMARTCARD_ERROR_NONE;

  return HAL_OK;
}

HAL_SMARTCARD_Abort_IT()

HAL_StatusTypeDef HAL_SMARTCARD_Abort_IT

(

SMARTCARD_HandleTypeDef *

hsmartcard

)

Abort ongoing transfers (Interrupt mode).

Parameters

hsmartcard

Pointer to a SMARTCARD_HandleTypeDef structure that contains the configuration information for the specified SMARTCARD module.

Note

This procedure could be used for aborting any ongoing transfer started in Interrupt or DMA mode. This procedure performs following operations :

• Disable SMARTCARD Interrupts (Tx and Rx)
• Disable the DMA transfer in the peripheral register (if enabled)
• Abort DMA transfer by calling HAL_DMA_Abort_IT (in case of transfer in DMA mode)
• Set handle State to READY
• At abort completion, call user abort complete callback

This procedure is executed in Interrupt mode, meaning that abort procedure could be considered as completed only when user abort complete callback is executed (not when exiting function).

Return values

HAL

status

Definition at line 1556 of file stm32l4xx_hal_smartcard.c.

{
  uint32_t abortcplt = 1U;

#if defined(USART_CR1_FIFOEN)
  /* Disable RTOIE, EOBIE, TXEIE, TCIE, RXNE, PE, RXFT, TXFT and  ERR (Frame error, noise error, overrun error) interrupts */
  CLEAR_BIT(hsmartcard->Instance->CR1,
            (USART_CR1_RXNEIE_RXFNEIE | USART_CR1_PEIE | USART_CR1_TXEIE_TXFNFIE | USART_CR1_TCIE | USART_CR1_RTOIE |
             USART_CR1_EOBIE));
  CLEAR_BIT(hsmartcard->Instance->CR3, (USART_CR3_EIE | USART_CR3_RXFTIE | USART_CR3_TXFTIE));
#else
  /* Disable RTOIE, EOBIE, TXEIE, TCIE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
  CLEAR_BIT(hsmartcard->Instance->CR1,
            (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE | USART_CR1_TCIE | USART_CR1_RTOIE | USART_CR1_EOBIE));
  CLEAR_BIT(hsmartcard->Instance->CR3, USART_CR3_EIE);
#endif /* USART_CR1_FIFOEN */

  /* If DMA Tx and/or DMA Rx Handles are associated to SMARTCARD Handle, DMA Abort complete callbacks should be initialised
     before any call to DMA Abort functions */
  /* DMA Tx Handle is valid */
  if (hsmartcard->hdmatx != NULL)
  {
    /* Set DMA Abort Complete callback if SMARTCARD DMA Tx request if enabled.
       Otherwise, set it to NULL */
    if (HAL_IS_BIT_SET(hsmartcard->Instance->CR3, USART_CR3_DMAT))
    {
      hsmartcard->hdmatx->XferAbortCallback = SMARTCARD_DMATxAbortCallback;
    }
    else
    {
      hsmartcard->hdmatx->XferAbortCallback = NULL;
    }
  }
  /* DMA Rx Handle is valid */
  if (hsmartcard->hdmarx != NULL)
  {
    /* Set DMA Abort Complete callback if SMARTCARD DMA Rx request if enabled.
       Otherwise, set it to NULL */
    if (HAL_IS_BIT_SET(hsmartcard->Instance->CR3, USART_CR3_DMAR))
    {
      hsmartcard->hdmarx->XferAbortCallback = SMARTCARD_DMARxAbortCallback;
    }
    else
    {
      hsmartcard->hdmarx->XferAbortCallback = NULL;
    }
  }

  /* Disable the SMARTCARD DMA Tx request if enabled */
  if (HAL_IS_BIT_SET(hsmartcard->Instance->CR3, USART_CR3_DMAT))
  {
    /* Disable DMA Tx at UART level */
    CLEAR_BIT(hsmartcard->Instance->CR3, USART_CR3_DMAT);

    /* Abort the SMARTCARD DMA Tx channel : use non blocking DMA Abort API (callback) */
    if (hsmartcard->hdmatx != NULL)
    {
      /* SMARTCARD Tx DMA Abort callback has already been initialised :
         will lead to call HAL_SMARTCARD_AbortCpltCallback() at end of DMA abort procedure */

      /* Abort DMA TX */
      if (HAL_DMA_Abort_IT(hsmartcard->hdmatx) != HAL_OK)
      {
        hsmartcard->hdmatx->XferAbortCallback = NULL;
      }
      else
      {
        abortcplt = 0U;
      }
    }
  }

  /* Disable the SMARTCARD DMA Rx request if enabled */
  if (HAL_IS_BIT_SET(hsmartcard->Instance->CR3, USART_CR3_DMAR))
  {
    CLEAR_BIT(hsmartcard->Instance->CR3, USART_CR3_DMAR);

    /* Abort the SMARTCARD DMA Rx channel : use non blocking DMA Abort API (callback) */
    if (hsmartcard->hdmarx != NULL)
    {
      /* SMARTCARD Rx DMA Abort callback has already been initialised :
         will lead to call HAL_SMARTCARD_AbortCpltCallback() at end of DMA abort procedure */

      /* Abort DMA RX */
      if (HAL_DMA_Abort_IT(hsmartcard->hdmarx) != HAL_OK)
      {
        hsmartcard->hdmarx->XferAbortCallback = NULL;
        abortcplt = 1U;
      }
      else
      {
        abortcplt = 0U;
      }
    }
  }

  /* if no DMA abort complete callback execution is required => call user Abort Complete callback */
  if (abortcplt == 1U)
  {
    /* Reset Tx and Rx transfer counters */
    hsmartcard->TxXferCount = 0U;
    hsmartcard->RxXferCount = 0U;

    /* Clear ISR function pointers */
    hsmartcard->RxISR = NULL;
    hsmartcard->TxISR = NULL;

    /* Reset errorCode */
    hsmartcard->ErrorCode = HAL_SMARTCARD_ERROR_NONE;

    /* Clear the Error flags in the ICR register */
    __HAL_SMARTCARD_CLEAR_FLAG(hsmartcard,
                               SMARTCARD_CLEAR_OREF | SMARTCARD_CLEAR_NEF | SMARTCARD_CLEAR_PEF | SMARTCARD_CLEAR_FEF | SMARTCARD_CLEAR_RTOF |
                               SMARTCARD_CLEAR_EOBF);

    /* Restore hsmartcard->gState and hsmartcard->RxState to Ready */
    hsmartcard->gState  = HAL_SMARTCARD_STATE_READY;
    hsmartcard->RxState = HAL_SMARTCARD_STATE_READY;

    /* As no DMA to be aborted, call directly user Abort complete callback */
#if (USE_HAL_SMARTCARD_REGISTER_CALLBACKS == 1)
    /* Call registered Abort complete callback */
    hsmartcard->AbortCpltCallback(hsmartcard);
#else
    /* Call legacy weak Abort complete callback */
    HAL_SMARTCARD_AbortCpltCallback(hsmartcard);
#endif /* USE_HAL_SMARTCARD_REGISTER_CALLBACK */
  }

  return HAL_OK;
}

HAL_SMARTCARD_AbortCpltCallback()

__weak void HAL_SMARTCARD_AbortCpltCallback

(

SMARTCARD_HandleTypeDef *

hsmartcard

)

SMARTCARD Abort Complete callback.

Parameters

hsmartcard

Pointer to a SMARTCARD_HandleTypeDef structure that contains the configuration information for the specified SMARTCARD module.

Return values

None

Definition at line 2264 of file stm32l4xx_hal_smartcard.c.

{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hsmartcard);

  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_SMARTCARD_AbortCpltCallback can be implemented in the user file.
   */
}

HAL_SMARTCARD_AbortReceive()

HAL_StatusTypeDef HAL_SMARTCARD_AbortReceive

(

SMARTCARD_HandleTypeDef *

hsmartcard

)

Abort ongoing Receive transfer (blocking mode).

Parameters

hsmartcard

Pointer to a SMARTCARD_HandleTypeDef structure that contains the configuration information for the specified SMARTCARD module.

Note

This procedure could be used for aborting any ongoing Rx transfer started in Interrupt or DMA mode. This procedure performs following operations :

• Disable SMARTCARD Interrupts (Rx)
• Disable the DMA transfer in the peripheral register (if enabled)
• Abort DMA transfer by calling HAL_DMA_Abort (in case of transfer in DMA mode)
• Set handle State to READY

This procedure is executed in blocking mode : when exiting function, Abort is considered as completed.

Return values

HAL

status

Definition at line 1483 of file stm32l4xx_hal_smartcard.c.

{
#if defined(USART_CR1_FIFOEN)
  /* Disable RTOIE, EOBIE, RXNE, PE, RXFT, TXFT and  ERR (Frame error, noise error, overrun error) interrupts */
  CLEAR_BIT(hsmartcard->Instance->CR1, (USART_CR1_RXNEIE_RXFNEIE | USART_CR1_PEIE | USART_CR1_RTOIE | USART_CR1_EOBIE));
  CLEAR_BIT(hsmartcard->Instance->CR3, (USART_CR3_EIE | USART_CR3_RXFTIE));
#else
  /* Disable RTOIE, EOBIE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
  CLEAR_BIT(hsmartcard->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_RTOIE | USART_CR1_EOBIE));
  CLEAR_BIT(hsmartcard->Instance->CR3, USART_CR3_EIE);
#endif /* USART_CR1_FIFOEN */

  /* Check if a Transmit process is ongoing or not. If not disable ERR IT */
  if (hsmartcard->gState == HAL_SMARTCARD_STATE_READY)
  {
    /* Disable the SMARTCARD Error Interrupt: (Frame error) */
    CLEAR_BIT(hsmartcard->Instance->CR3, USART_CR3_EIE);
  }

  /* Disable the SMARTCARD DMA Rx request if enabled */
  if (HAL_IS_BIT_SET(hsmartcard->Instance->CR3, USART_CR3_DMAR))
  {
    CLEAR_BIT(hsmartcard->Instance->CR3, USART_CR3_DMAR);

    /* Abort the SMARTCARD DMA Rx channel : use blocking DMA Abort API (no callback) */
    if (hsmartcard->hdmarx != NULL)
    {
      /* Set the SMARTCARD DMA Abort callback to Null.
         No call back execution at end of DMA abort procedure */
      hsmartcard->hdmarx->XferAbortCallback = NULL;

      if (HAL_DMA_Abort(hsmartcard->hdmarx) != HAL_OK)
      {
        if (HAL_DMA_GetError(hsmartcard->hdmarx) == HAL_DMA_ERROR_TIMEOUT)
        {
          /* Set error code to DMA */
          hsmartcard->ErrorCode = HAL_SMARTCARD_ERROR_DMA;

          return HAL_TIMEOUT;
        }
      }
    }
  }

  /* Reset Rx transfer counter */
  hsmartcard->RxXferCount = 0U;

  /* Clear the Error flags in the ICR register */
  __HAL_SMARTCARD_CLEAR_FLAG(hsmartcard,
                             SMARTCARD_CLEAR_OREF | SMARTCARD_CLEAR_NEF | SMARTCARD_CLEAR_PEF | SMARTCARD_CLEAR_FEF | SMARTCARD_CLEAR_RTOF |
                             SMARTCARD_CLEAR_EOBF);

  /* Restore hsmartcard->RxState to Ready */
  hsmartcard->RxState = HAL_SMARTCARD_STATE_READY;

  return HAL_OK;
}

HAL_SMARTCARD_AbortReceive_IT()

HAL_StatusTypeDef HAL_SMARTCARD_AbortReceive_IT

(

SMARTCARD_HandleTypeDef *

hsmartcard

)

Abort ongoing Receive transfer (Interrupt mode).

Parameters

hsmartcard

Pointer to a SMARTCARD_HandleTypeDef structure that contains the configuration information for the specified SMARTCARD module.

Note

This procedure could be used for aborting any ongoing Rx transfer started in Interrupt or DMA mode. This procedure performs following operations :

• Disable SMARTCARD Interrupts (Rx)
• Disable the DMA transfer in the peripheral register (if enabled)
• Abort DMA transfer by calling HAL_DMA_Abort_IT (in case of transfer in DMA mode)
• Set handle State to READY
• At abort completion, call user abort complete callback

This procedure is executed in Interrupt mode, meaning that abort procedure could be considered as completed only when user abort complete callback is executed (not when exiting function).

Return values

HAL

status

Definition at line 1803 of file stm32l4xx_hal_smartcard.c.

{
#if defined(USART_CR1_FIFOEN)
  /* Disable RTOIE, EOBIE, RXNE, PE, RXFT and  ERR (Frame error, noise error, overrun error) interrupts */
  CLEAR_BIT(hsmartcard->Instance->CR1, (USART_CR1_RXNEIE_RXFNEIE | USART_CR1_PEIE | USART_CR1_RTOIE | USART_CR1_EOBIE));
  CLEAR_BIT(hsmartcard->Instance->CR3, (USART_CR3_EIE | USART_CR3_RXFTIE));
#else
  /* Disable RTOIE, EOBIE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
  CLEAR_BIT(hsmartcard->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_RTOIE | USART_CR1_EOBIE));
  CLEAR_BIT(hsmartcard->Instance->CR3, USART_CR3_EIE);
#endif /* USART_CR1_FIFOEN */

  /* Check if a Transmit process is ongoing or not. If not disable ERR IT */
  if (hsmartcard->gState == HAL_SMARTCARD_STATE_READY)
  {
    /* Disable the SMARTCARD Error Interrupt: (Frame error) */
    CLEAR_BIT(hsmartcard->Instance->CR3, USART_CR3_EIE);
  }

  /* Disable the SMARTCARD DMA Rx request if enabled */
  if (HAL_IS_BIT_SET(hsmartcard->Instance->CR3, USART_CR3_DMAR))
  {
    CLEAR_BIT(hsmartcard->Instance->CR3, USART_CR3_DMAR);

    /* Abort the SMARTCARD DMA Rx channel : use non blocking DMA Abort API (callback) */
    if (hsmartcard->hdmarx != NULL)
    {
      /* Set the SMARTCARD DMA Abort callback :
         will lead to call HAL_SMARTCARD_AbortCpltCallback() at end of DMA abort procedure */
      hsmartcard->hdmarx->XferAbortCallback = SMARTCARD_DMARxOnlyAbortCallback;

      /* Abort DMA RX */
      if (HAL_DMA_Abort_IT(hsmartcard->hdmarx) != HAL_OK)
      {
        /* Call Directly hsmartcard->hdmarx->XferAbortCallback function in case of error */
        hsmartcard->hdmarx->XferAbortCallback(hsmartcard->hdmarx);
      }
    }
    else
    {
      /* Reset Rx transfer counter */
      hsmartcard->RxXferCount = 0U;

      /* Clear RxISR function pointer */
      hsmartcard->RxISR = NULL;

      /* Clear the Error flags in the ICR register */
      __HAL_SMARTCARD_CLEAR_FLAG(hsmartcard,
                                 SMARTCARD_CLEAR_OREF | SMARTCARD_CLEAR_NEF | SMARTCARD_CLEAR_PEF | SMARTCARD_CLEAR_FEF | SMARTCARD_CLEAR_RTOF |
                                 SMARTCARD_CLEAR_EOBF);

      /* Restore hsmartcard->RxState to Ready */
      hsmartcard->RxState = HAL_SMARTCARD_STATE_READY;

      /* As no DMA to be aborted, call directly user Abort complete callback */
#if (USE_HAL_SMARTCARD_REGISTER_CALLBACKS == 1)
      /* Call registered Abort Receive Complete Callback */
      hsmartcard->AbortReceiveCpltCallback(hsmartcard);
#else
      /* Call legacy weak Abort Receive Complete Callback */
      HAL_SMARTCARD_AbortReceiveCpltCallback(hsmartcard);
#endif /* USE_HAL_SMARTCARD_REGISTER_CALLBACK */
    }
  }
  else
  {
    /* Reset Rx transfer counter */
    hsmartcard->RxXferCount = 0U;

    /* Clear RxISR function pointer */
    hsmartcard->RxISR = NULL;

    /* Clear the Error flags in the ICR register */
    __HAL_SMARTCARD_CLEAR_FLAG(hsmartcard,
                               SMARTCARD_CLEAR_OREF | SMARTCARD_CLEAR_NEF | SMARTCARD_CLEAR_PEF | SMARTCARD_CLEAR_FEF | SMARTCARD_CLEAR_RTOF |
                               SMARTCARD_CLEAR_EOBF);

    /* Restore hsmartcard->RxState to Ready */
    hsmartcard->RxState = HAL_SMARTCARD_STATE_READY;

    /* As no DMA to be aborted, call directly user Abort complete callback */
#if (USE_HAL_SMARTCARD_REGISTER_CALLBACKS == 1)
    /* Call registered Abort Receive Complete Callback */
    hsmartcard->AbortReceiveCpltCallback(hsmartcard);
#else
    /* Call legacy weak Abort Receive Complete Callback */
    HAL_SMARTCARD_AbortReceiveCpltCallback(hsmartcard);
#endif /* USE_HAL_SMARTCARD_REGISTER_CALLBACK */
  }

  return HAL_OK;
}

HAL_SMARTCARD_AbortReceiveCpltCallback()

__weak void HAL_SMARTCARD_AbortReceiveCpltCallback

(

SMARTCARD_HandleTypeDef *

hsmartcard

)

SMARTCARD Abort Receive Complete callback.

Parameters

hsmartcard

Pointer to a SMARTCARD_HandleTypeDef structure that contains the configuration information for the specified SMARTCARD module.

Return values

None

Definition at line 2296 of file stm32l4xx_hal_smartcard.c.

{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hsmartcard);

  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_SMARTCARD_AbortReceiveCpltCallback can be implemented in the user file.
   */
}

HAL_SMARTCARD_AbortTransmit()

HAL_StatusTypeDef HAL_SMARTCARD_AbortTransmit

(

SMARTCARD_HandleTypeDef *

hsmartcard

)

Abort ongoing Transmit transfer (blocking mode).

Parameters

hsmartcard

Pointer to a SMARTCARD_HandleTypeDef structure that contains the configuration information for the specified SMARTCARD module.

Note

This procedure could be used for aborting any ongoing Tx transfer started in Interrupt or DMA mode. This procedure performs following operations :

• Disable SMARTCARD Interrupts (Tx)
• Disable the DMA transfer in the peripheral register (if enabled)
• Abort DMA transfer by calling HAL_DMA_Abort (in case of transfer in DMA mode)
• Set handle State to READY

This procedure is executed in blocking mode : when exiting function, Abort is considered as completed.

Return values

HAL

status

Definition at line 1415 of file stm32l4xx_hal_smartcard.c.

{
#if defined(USART_CR1_FIFOEN)
  /* Disable TCIE, TXEIE and TXFTIE interrupts */
  CLEAR_BIT(hsmartcard->Instance->CR1, (USART_CR1_TXEIE_TXFNFIE | USART_CR1_TCIE));
  CLEAR_BIT(hsmartcard->Instance->CR3, USART_CR3_TXFTIE);
#else
  /* Disable TXEIE and TCIE interrupts */
  CLEAR_BIT(hsmartcard->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE));
#endif /* USART_CR1_FIFOEN */

  /* Check if a receive process is ongoing or not. If not disable ERR IT */
  if (hsmartcard->RxState == HAL_SMARTCARD_STATE_READY)
  {
    /* Disable the SMARTCARD Error Interrupt: (Frame error) */
    CLEAR_BIT(hsmartcard->Instance->CR3, USART_CR3_EIE);
  }

  /* Disable the SMARTCARD DMA Tx request if enabled */
  if (HAL_IS_BIT_SET(hsmartcard->Instance->CR3, USART_CR3_DMAT))
  {
    CLEAR_BIT(hsmartcard->Instance->CR3, USART_CR3_DMAT);

    /* Abort the SMARTCARD DMA Tx channel : use blocking DMA Abort API (no callback) */
    if (hsmartcard->hdmatx != NULL)
    {
      /* Set the SMARTCARD DMA Abort callback to Null.
         No call back execution at end of DMA abort procedure */
      hsmartcard->hdmatx->XferAbortCallback = NULL;

      if (HAL_DMA_Abort(hsmartcard->hdmatx) != HAL_OK)
      {
        if (HAL_DMA_GetError(hsmartcard->hdmatx) == HAL_DMA_ERROR_TIMEOUT)
        {
          /* Set error code to DMA */
          hsmartcard->ErrorCode = HAL_SMARTCARD_ERROR_DMA;

          return HAL_TIMEOUT;
        }
      }
    }
  }

  /* Reset Tx transfer counter */
  hsmartcard->TxXferCount = 0U;

  /* Clear the Error flags in the ICR register */
  __HAL_SMARTCARD_CLEAR_FLAG(hsmartcard, SMARTCARD_CLEAR_FEF);

  /* Restore hsmartcard->gState to Ready */
  hsmartcard->gState = HAL_SMARTCARD_STATE_READY;

  return HAL_OK;
}

HAL_SMARTCARD_AbortTransmit_IT()

HAL_StatusTypeDef HAL_SMARTCARD_AbortTransmit_IT

(

SMARTCARD_HandleTypeDef *

hsmartcard

)

Abort ongoing Transmit transfer (Interrupt mode).

Parameters

hsmartcard

Pointer to a SMARTCARD_HandleTypeDef structure that contains the configuration information for the specified SMARTCARD module.

Note

This procedure could be used for aborting any ongoing Tx transfer started in Interrupt or DMA mode. This procedure performs following operations :

• Disable SMARTCARD Interrupts (Tx)
• Disable the DMA transfer in the peripheral register (if enabled)
• Abort DMA transfer by calling HAL_DMA_Abort_IT (in case of transfer in DMA mode)
• Set handle State to READY
• At abort completion, call user abort complete callback

This procedure is executed in Interrupt mode, meaning that abort procedure could be considered as completed only when user abort complete callback is executed (not when exiting function).

Return values

HAL

status

Definition at line 1703 of file stm32l4xx_hal_smartcard.c.

{
#if defined(USART_CR1_FIFOEN)
  /* Disable TCIE, TXEIE and TXFTIE interrupts */
  CLEAR_BIT(hsmartcard->Instance->CR1, (USART_CR1_TXEIE_TXFNFIE | USART_CR1_TCIE));
  CLEAR_BIT(hsmartcard->Instance->CR3, USART_CR3_TXFTIE);
#else
  /* Disable TXEIE and TCIE interrupts */
  CLEAR_BIT(hsmartcard->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE));
#endif /* USART_CR1_FIFOEN */

  /* Check if a receive process is ongoing or not. If not disable ERR IT */
  if (hsmartcard->RxState == HAL_SMARTCARD_STATE_READY)
  {
    /* Disable the SMARTCARD Error Interrupt: (Frame error) */
    CLEAR_BIT(hsmartcard->Instance->CR3, USART_CR3_EIE);
  }

  /* Disable the SMARTCARD DMA Tx request if enabled */
  if (HAL_IS_BIT_SET(hsmartcard->Instance->CR3, USART_CR3_DMAT))
  {
    CLEAR_BIT(hsmartcard->Instance->CR3, USART_CR3_DMAT);

    /* Abort the SMARTCARD DMA Tx channel : use non blocking DMA Abort API (callback) */
    if (hsmartcard->hdmatx != NULL)
    {
      /* Set the SMARTCARD DMA Abort callback :
         will lead to call HAL_SMARTCARD_AbortCpltCallback() at end of DMA abort procedure */
      hsmartcard->hdmatx->XferAbortCallback = SMARTCARD_DMATxOnlyAbortCallback;

      /* Abort DMA TX */
      if (HAL_DMA_Abort_IT(hsmartcard->hdmatx) != HAL_OK)
      {
        /* Call Directly hsmartcard->hdmatx->XferAbortCallback function in case of error */
        hsmartcard->hdmatx->XferAbortCallback(hsmartcard->hdmatx);
      }
    }
    else
    {
      /* Reset Tx transfer counter */
      hsmartcard->TxXferCount = 0U;

      /* Clear TxISR function pointers */
      hsmartcard->TxISR = NULL;

      /* Restore hsmartcard->gState to Ready */
      hsmartcard->gState = HAL_SMARTCARD_STATE_READY;

      /* As no DMA to be aborted, call directly user Abort complete callback */
#if (USE_HAL_SMARTCARD_REGISTER_CALLBACKS == 1)
      /* Call registered Abort Transmit Complete Callback */
      hsmartcard->AbortTransmitCpltCallback(hsmartcard);
#else
      /* Call legacy weak Abort Transmit Complete Callback */
      HAL_SMARTCARD_AbortTransmitCpltCallback(hsmartcard);
#endif /* USE_HAL_SMARTCARD_REGISTER_CALLBACK */
    }
  }
  else
  {
    /* Reset Tx transfer counter */
    hsmartcard->TxXferCount = 0U;

    /* Clear TxISR function pointers */
    hsmartcard->TxISR = NULL;

    /* Clear the Error flags in the ICR register */
    __HAL_SMARTCARD_CLEAR_FLAG(hsmartcard, SMARTCARD_CLEAR_FEF);

    /* Restore hsmartcard->gState to Ready */
    hsmartcard->gState = HAL_SMARTCARD_STATE_READY;

    /* As no DMA to be aborted, call directly user Abort complete callback */
#if (USE_HAL_SMARTCARD_REGISTER_CALLBACKS == 1)
    /* Call registered Abort Transmit Complete Callback */
    hsmartcard->AbortTransmitCpltCallback(hsmartcard);
#else
    /* Call legacy weak Abort Transmit Complete Callback */
    HAL_SMARTCARD_AbortTransmitCpltCallback(hsmartcard);
#endif /* USE_HAL_SMARTCARD_REGISTER_CALLBACK */
  }

  return HAL_OK;
}

HAL_SMARTCARD_AbortTransmitCpltCallback()

__weak void HAL_SMARTCARD_AbortTransmitCpltCallback

(

SMARTCARD_HandleTypeDef *

hsmartcard

)

SMARTCARD Abort Complete callback.

Parameters

hsmartcard

Pointer to a SMARTCARD_HandleTypeDef structure that contains the configuration information for the specified SMARTCARD module.

Return values

None

Definition at line 2280 of file stm32l4xx_hal_smartcard.c.

{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hsmartcard);

  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_SMARTCARD_AbortTransmitCpltCallback can be implemented in the user file.
   */
}

HAL_SMARTCARD_ErrorCallback()

__weak void HAL_SMARTCARD_ErrorCallback

(

SMARTCARD_HandleTypeDef *

hsmartcard

)

SMARTCARD error callback.

Parameters

hsmartcard

Pointer to a SMARTCARD_HandleTypeDef structure that contains the configuration information for the specified SMARTCARD module.

Return values

None

Definition at line 2248 of file stm32l4xx_hal_smartcard.c.

{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hsmartcard);

  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_SMARTCARD_ErrorCallback can be implemented in the user file.
   */
}

HAL_SMARTCARD_IRQHandler()

void HAL_SMARTCARD_IRQHandler

(

SMARTCARD_HandleTypeDef *

hsmartcard

)

Handle SMARTCARD interrupt requests.

Parameters

hsmartcard

Pointer to a SMARTCARD_HandleTypeDef structure that contains the configuration information for the specified SMARTCARD module.

Return values

None

Definition at line 1902 of file stm32l4xx_hal_smartcard.c.

{
  uint32_t isrflags   = READ_REG(hsmartcard->Instance->ISR);
  uint32_t cr1its     = READ_REG(hsmartcard->Instance->CR1);
  uint32_t cr3its     = READ_REG(hsmartcard->Instance->CR3);
  uint32_t errorflags;
  uint32_t errorcode;

  /* If no error occurs */
  errorflags = (isrflags & (uint32_t)(USART_ISR_PE | USART_ISR_FE | USART_ISR_ORE | USART_ISR_NE | USART_ISR_RTOF));
  if (errorflags == 0U)
  {
    /* SMARTCARD in mode Receiver ---------------------------------------------------*/
#if defined(USART_CR1_FIFOEN)
    if (((isrflags & USART_ISR_RXNE_RXFNE) != 0U)
        && (((cr1its & USART_CR1_RXNEIE_RXFNEIE) != 0U)
            || ((cr3its & USART_CR3_RXFTIE) != 0U)))
#else
    if (((isrflags & USART_ISR_RXNE) != 0U)
        && ((cr1its & USART_CR1_RXNEIE) != 0U))
#endif /* USART_CR1_FIFOEN */
    {
      if (hsmartcard->RxISR != NULL)
      {
        hsmartcard->RxISR(hsmartcard);
      }
      return;
    }
  }

  /* If some errors occur */
#if defined(USART_CR1_FIFOEN)
  if ((errorflags != 0U)
      && ((((cr3its & (USART_CR3_RXFTIE | USART_CR3_EIE)) != 0U)
           || ((cr1its & (USART_CR1_RXNEIE_RXFNEIE | USART_CR1_PEIE)) != 0U))))
#else
  if ((errorflags != 0U)
      && (((cr3its & USART_CR3_EIE) != 0U)
          || ((cr1its & (USART_CR1_RXNEIE | USART_CR1_PEIE)) != 0U)))
#endif /* USART_CR1_FIFOEN */
  {
    /* SMARTCARD parity error interrupt occurred -------------------------------------*/
    if (((isrflags & USART_ISR_PE) != 0U) && ((cr1its & USART_CR1_PEIE) != 0U))
    {
      __HAL_SMARTCARD_CLEAR_IT(hsmartcard, SMARTCARD_CLEAR_PEF);

      hsmartcard->ErrorCode |= HAL_SMARTCARD_ERROR_PE;
    }

    /* SMARTCARD frame error interrupt occurred --------------------------------------*/
    if (((isrflags & USART_ISR_FE) != 0U) && ((cr3its & USART_CR3_EIE) != 0U))
    {
      __HAL_SMARTCARD_CLEAR_IT(hsmartcard, SMARTCARD_CLEAR_FEF);

      hsmartcard->ErrorCode |= HAL_SMARTCARD_ERROR_FE;
    }

    /* SMARTCARD noise error interrupt occurred --------------------------------------*/
    if (((isrflags & USART_ISR_NE) != 0U) && ((cr3its & USART_CR3_EIE) != 0U))
    {
      __HAL_SMARTCARD_CLEAR_IT(hsmartcard, SMARTCARD_CLEAR_NEF);

      hsmartcard->ErrorCode |= HAL_SMARTCARD_ERROR_NE;
    }

    /* SMARTCARD Over-Run interrupt occurred -----------------------------------------*/
#if defined(USART_CR1_FIFOEN)
    if (((isrflags & USART_ISR_ORE) != 0U)
        && (((cr1its & USART_CR1_RXNEIE_RXFNEIE) != 0U)
            || ((cr3its & USART_CR3_RXFTIE) != 0U)
            || ((cr3its & USART_CR3_EIE) != 0U)))
#else
    if (((isrflags & USART_ISR_ORE) != 0U)
        && (((cr1its & USART_CR1_RXNEIE) != 0U)
            || ((cr3its & USART_CR3_EIE) != 0U)))
#endif /* USART_CR1_FIFOEN */
    {
      __HAL_SMARTCARD_CLEAR_IT(hsmartcard, SMARTCARD_CLEAR_OREF);

      hsmartcard->ErrorCode |= HAL_SMARTCARD_ERROR_ORE;
    }

    /* SMARTCARD receiver timeout interrupt occurred -----------------------------------------*/
    if (((isrflags & USART_ISR_RTOF) != 0U) && ((cr1its & USART_CR1_RTOIE) != 0U))
    {
      __HAL_SMARTCARD_CLEAR_IT(hsmartcard, SMARTCARD_CLEAR_RTOF);

      hsmartcard->ErrorCode |= HAL_SMARTCARD_ERROR_RTO;
    }

    /* Call SMARTCARD Error Call back function if need be --------------------------*/
    if (hsmartcard->ErrorCode != HAL_SMARTCARD_ERROR_NONE)
    {
      /* SMARTCARD in mode Receiver ---------------------------------------------------*/
#if defined(USART_CR1_FIFOEN)
      if (((isrflags & USART_ISR_RXNE_RXFNE) != 0U)
          && (((cr1its & USART_CR1_RXNEIE_RXFNEIE) != 0U)
              || ((cr3its & USART_CR3_RXFTIE) != 0U)))
#else
      if (((isrflags & USART_ISR_RXNE) != 0U)
          && ((cr1its & USART_CR1_RXNEIE) != 0U))
#endif /* USART_CR1_FIFOEN */
      {
        if (hsmartcard->RxISR != NULL)
        {
          hsmartcard->RxISR(hsmartcard);
        }
      }

      /* If Error is to be considered as blocking :
          - Receiver Timeout error in Reception
          - Overrun error in Reception
          - any error occurs in DMA mode reception
      */
      errorcode = hsmartcard->ErrorCode;
      if ((HAL_IS_BIT_SET(hsmartcard->Instance->CR3, USART_CR3_DMAR))
          || ((errorcode & (HAL_SMARTCARD_ERROR_RTO | HAL_SMARTCARD_ERROR_ORE)) != 0U))
      {
        /* Blocking error : transfer is aborted
           Set the SMARTCARD state ready to be able to start again the process,
           Disable Rx Interrupts, and disable Rx DMA request, if ongoing */
        SMARTCARD_EndRxTransfer(hsmartcard);

        /* Disable the SMARTCARD DMA Rx request if enabled */
        if (HAL_IS_BIT_SET(hsmartcard->Instance->CR3, USART_CR3_DMAR))
        {
          CLEAR_BIT(hsmartcard->Instance->CR3, USART_CR3_DMAR);

          /* Abort the SMARTCARD DMA Rx channel */
          if (hsmartcard->hdmarx != NULL)
          {
            /* Set the SMARTCARD DMA Abort callback :
               will lead to call HAL_SMARTCARD_ErrorCallback() at end of DMA abort procedure */
            hsmartcard->hdmarx->XferAbortCallback = SMARTCARD_DMAAbortOnError;

            /* Abort DMA RX */
            if (HAL_DMA_Abort_IT(hsmartcard->hdmarx) != HAL_OK)
            {
              /* Call Directly hsmartcard->hdmarx->XferAbortCallback function in case of error */
              hsmartcard->hdmarx->XferAbortCallback(hsmartcard->hdmarx);
            }
          }
          else
          {
#if (USE_HAL_SMARTCARD_REGISTER_CALLBACKS == 1)
            /* Call registered user error callback */
            hsmartcard->ErrorCallback(hsmartcard);
#else
            /* Call legacy weak user error callback */
            HAL_SMARTCARD_ErrorCallback(hsmartcard);
#endif /* USE_HAL_SMARTCARD_REGISTER_CALLBACK */
          }
        }
        else
        {
#if (USE_HAL_SMARTCARD_REGISTER_CALLBACKS == 1)
          /* Call registered user error callback */
          hsmartcard->ErrorCallback(hsmartcard);
#else
          /* Call legacy weak user error callback */
          HAL_SMARTCARD_ErrorCallback(hsmartcard);
#endif /* USE_HAL_SMARTCARD_REGISTER_CALLBACK */
        }
      }
      /* other error type to be considered as blocking :
          - Frame error in Transmission
      */
      else if ((hsmartcard->gState == HAL_SMARTCARD_STATE_BUSY_TX)
               && ((errorcode & HAL_SMARTCARD_ERROR_FE) != 0U))
      {
        /* Blocking error : transfer is aborted
           Set the SMARTCARD state ready to be able to start again the process,
           Disable Tx Interrupts, and disable Tx DMA request, if ongoing */
        SMARTCARD_EndTxTransfer(hsmartcard);

        /* Disable the SMARTCARD DMA Tx request if enabled */
        if (HAL_IS_BIT_SET(hsmartcard->Instance->CR3, USART_CR3_DMAT))
        {
          CLEAR_BIT(hsmartcard->Instance->CR3, USART_CR3_DMAT);

          /* Abort the SMARTCARD DMA Tx channel */
          if (hsmartcard->hdmatx != NULL)
          {
            /* Set the SMARTCARD DMA Abort callback :
               will lead to call HAL_SMARTCARD_ErrorCallback() at end of DMA abort procedure */
            hsmartcard->hdmatx->XferAbortCallback = SMARTCARD_DMAAbortOnError;

            /* Abort DMA TX */
            if (HAL_DMA_Abort_IT(hsmartcard->hdmatx) != HAL_OK)
            {
              /* Call Directly hsmartcard->hdmatx->XferAbortCallback function in case of error */
              hsmartcard->hdmatx->XferAbortCallback(hsmartcard->hdmatx);
            }
          }
          else
          {
#if (USE_HAL_SMARTCARD_REGISTER_CALLBACKS == 1)
            /* Call registered user error callback */
            hsmartcard->ErrorCallback(hsmartcard);
#else
            /* Call legacy weak user error callback */
            HAL_SMARTCARD_ErrorCallback(hsmartcard);
#endif /* USE_HAL_SMARTCARD_REGISTER_CALLBACK */
          }
        }
        else
        {
#if (USE_HAL_SMARTCARD_REGISTER_CALLBACKS == 1)
          /* Call registered user error callback */
          hsmartcard->ErrorCallback(hsmartcard);
#else
          /* Call legacy weak user error callback */
          HAL_SMARTCARD_ErrorCallback(hsmartcard);
#endif /* USE_HAL_SMARTCARD_REGISTER_CALLBACK */
        }
      }
      else
      {
        /* Non Blocking error : transfer could go on.
           Error is notified to user through user error callback */
#if (USE_HAL_SMARTCARD_REGISTER_CALLBACKS == 1)
        /* Call registered user error callback */
        hsmartcard->ErrorCallback(hsmartcard);
#else
        /* Call legacy weak user error callback */
        HAL_SMARTCARD_ErrorCallback(hsmartcard);
#endif /* USE_HAL_SMARTCARD_REGISTER_CALLBACK */
        hsmartcard->ErrorCode = HAL_SMARTCARD_ERROR_NONE;
      }
    }
    return;

  } /* End if some error occurs */

  /* SMARTCARD in mode Receiver, end of block interruption ------------------------*/
  if (((isrflags & USART_ISR_EOBF) != 0U) && ((cr1its & USART_CR1_EOBIE) != 0U))
  {
    hsmartcard->RxState = HAL_SMARTCARD_STATE_READY;
    __HAL_UNLOCK(hsmartcard);
#if (USE_HAL_SMARTCARD_REGISTER_CALLBACKS == 1)
    /* Call registered Rx complete callback */
    hsmartcard->RxCpltCallback(hsmartcard);
#else
    /* Call legacy weak Rx complete callback */
    HAL_SMARTCARD_RxCpltCallback(hsmartcard);
#endif /* USE_HAL_SMARTCARD_REGISTER_CALLBACK */
    /* Clear EOBF interrupt after HAL_SMARTCARD_RxCpltCallback() call for the End of Block information
       to be available during HAL_SMARTCARD_RxCpltCallback() processing */
    __HAL_SMARTCARD_CLEAR_IT(hsmartcard, SMARTCARD_CLEAR_EOBF);
    return;
  }

  /* SMARTCARD in mode Transmitter ------------------------------------------------*/
#if defined(USART_CR1_FIFOEN)
  if (((isrflags & USART_ISR_TXE_TXFNF) != 0U)
      && (((cr1its & USART_CR1_TXEIE_TXFNFIE) != 0U)
          || ((cr3its & USART_CR3_TXFTIE) != 0U)))
#else
  if (((isrflags & USART_ISR_TXE) != 0U)
      && ((cr1its & USART_CR1_TXEIE) != 0U))
#endif /* USART_CR1_FIFOEN */
  {
    if (hsmartcard->TxISR != NULL)
    {
      hsmartcard->TxISR(hsmartcard);
    }
    return;
  }

  /* SMARTCARD in mode Transmitter (transmission end) ------------------------*/
  if (__HAL_SMARTCARD_GET_IT(hsmartcard, hsmartcard->AdvancedInit.TxCompletionIndication) != RESET)
  {
    if (__HAL_SMARTCARD_GET_IT_SOURCE(hsmartcard, hsmartcard->AdvancedInit.TxCompletionIndication) != RESET)
    {
      SMARTCARD_EndTransmit_IT(hsmartcard);
      return;
    }
  }

#if defined(USART_CR1_FIFOEN)
  /* SMARTCARD TX Fifo Empty occurred ----------------------------------------------*/
  if (((isrflags & USART_ISR_TXFE) != 0U) && ((cr1its & USART_CR1_TXFEIE) != 0U))
  {
#if (USE_HAL_SMARTCARD_REGISTER_CALLBACKS == 1)
    /* Call registered Tx Fifo Empty Callback */
    hsmartcard->TxFifoEmptyCallback(hsmartcard);
#else
    /* Call legacy weak Tx Fifo Empty Callback */
    HAL_SMARTCARDEx_TxFifoEmptyCallback(hsmartcard);
#endif /* USE_HAL_SMARTCARD_REGISTER_CALLBACK */
    return;
  }

  /* SMARTCARD RX Fifo Full occurred ----------------------------------------------*/
  if (((isrflags & USART_ISR_RXFF) != 0U) && ((cr1its & USART_CR1_RXFFIE) != 0U))
  {
#if (USE_HAL_SMARTCARD_REGISTER_CALLBACKS == 1)
    /* Call registered Rx Fifo Full Callback */
    hsmartcard->RxFifoFullCallback(hsmartcard);
#else
    /* Call legacy weak Rx Fifo Full Callback */
    HAL_SMARTCARDEx_RxFifoFullCallback(hsmartcard);
#endif /* USE_HAL_SMARTCARD_REGISTER_CALLBACK */
    return;
  }
#endif /* USART_CR1_FIFOEN */
}

HAL_SMARTCARD_Receive()

HAL_StatusTypeDef HAL_SMARTCARD_Receive	(	SMARTCARD_HandleTypeDef *	hsmartcard,
		uint8_t *	pData,
		uint16_t	Size,
		uint32_t	Timeout
	)

Receive an amount of data in blocking mode.

Note

When FIFO mode is enabled, the RXFNE flag is set as long as the RXFIFO is not empty. Read operations from the RDR register are performed when RXFNE flag is set. From hardware perspective, RXFNE flag and RXNE are mapped on the same bit-field.

Parameters

hsmartcard	Pointer to a SMARTCARD_HandleTypeDef structure that contains the configuration information for the specified SMARTCARD module.
pData	pointer to data buffer.
Size	amount of data to be received.
Timeout	Timeout duration.

Return values

HAL

status

Definition at line 907 of file stm32l4xx_hal_smartcard.c.

{
  uint32_t tickstart;
  uint8_t  *ptmpdata = pData;

  /* Check that a Rx process is not already ongoing */
  if (hsmartcard->RxState == HAL_SMARTCARD_STATE_READY)
  {
    if ((ptmpdata == NULL) || (Size == 0U))
    {
      return  HAL_ERROR;
    }

    /* Process Locked */
    __HAL_LOCK(hsmartcard);

    hsmartcard->ErrorCode = HAL_SMARTCARD_ERROR_NONE;
    hsmartcard->RxState   = HAL_SMARTCARD_STATE_BUSY_RX;

    /* Init tickstart for timeout management */
    tickstart = HAL_GetTick();

    hsmartcard->RxXferSize = Size;
    hsmartcard->RxXferCount = Size;

    /* Check the remain data to be received */
    while (hsmartcard->RxXferCount > 0U)
    {
      hsmartcard->RxXferCount--;

      if (SMARTCARD_WaitOnFlagUntilTimeout(hsmartcard, SMARTCARD_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)
      {
        return HAL_TIMEOUT;
      }
      *ptmpdata = (uint8_t)(hsmartcard->Instance->RDR & (uint8_t)0x00FF);
      ptmpdata++;
    }

    /* At end of Rx process, restore hsmartcard->RxState to Ready */
    hsmartcard->RxState = HAL_SMARTCARD_STATE_READY;

    /* Process Unlocked */
    __HAL_UNLOCK(hsmartcard);

    return HAL_OK;
  }
  else
  {
    return HAL_BUSY;
  }
}

HAL_SMARTCARD_Receive_DMA()

HAL_StatusTypeDef HAL_SMARTCARD_Receive_DMA	(	SMARTCARD_HandleTypeDef *	hsmartcard,
		uint8_t *	pData,
		uint16_t	Size
	)

Receive an amount of data in DMA mode.

Parameters

hsmartcard	Pointer to a SMARTCARD_HandleTypeDef structure that contains the configuration information for the specified SMARTCARD module.
pData	pointer to data buffer.
Size	amount of data to be received.

Note

The SMARTCARD-associated USART parity is enabled (PCE = 1), the received data contain the parity bit (MSB position).

Return values

HAL

status

Definition at line 1238 of file stm32l4xx_hal_smartcard.c.

{
  /* Check that a Rx process is not already ongoing */
  if (hsmartcard->RxState == HAL_SMARTCARD_STATE_READY)
  {
    if ((pData == NULL) || (Size == 0U))
    {
      return HAL_ERROR;
    }

    /* Process Locked */
    __HAL_LOCK(hsmartcard);

    hsmartcard->ErrorCode = HAL_SMARTCARD_ERROR_NONE;
    hsmartcard->RxState   = HAL_SMARTCARD_STATE_BUSY_RX;

    hsmartcard->pRxBuffPtr = pData;
    hsmartcard->RxXferSize = Size;

    /* Set the SMARTCARD DMA transfer complete callback */
    hsmartcard->hdmarx->XferCpltCallback = SMARTCARD_DMAReceiveCplt;

    /* Set the SMARTCARD DMA error callback */
    hsmartcard->hdmarx->XferErrorCallback = SMARTCARD_DMAError;

    /* Set the DMA abort callback */
    hsmartcard->hdmarx->XferAbortCallback = NULL;

    /* Enable the DMA channel */
    if (HAL_DMA_Start_IT(hsmartcard->hdmarx, (uint32_t)&hsmartcard->Instance->RDR, (uint32_t)hsmartcard->pRxBuffPtr,
                         Size) == HAL_OK)
    {
      /* Process Unlocked */
      __HAL_UNLOCK(hsmartcard);

      /* Enable the SMARTCARD Parity Error Interrupt */
      SET_BIT(hsmartcard->Instance->CR1, USART_CR1_PEIE);

      /* Enable the SMARTCARD Error Interrupt: (Frame error, noise error, overrun error) */
      SET_BIT(hsmartcard->Instance->CR3, USART_CR3_EIE);

      /* Enable the DMA transfer for the receiver request by setting the DMAR bit
         in the SMARTCARD associated USART CR3 register */
      SET_BIT(hsmartcard->Instance->CR3, USART_CR3_DMAR);

      return HAL_OK;
    }
    else
    {
      /* Set error code to DMA */
      hsmartcard->ErrorCode = HAL_SMARTCARD_ERROR_DMA;

      /* Process Unlocked */
      __HAL_UNLOCK(hsmartcard);

      /* Restore hsmartcard->State to ready */
      hsmartcard->RxState = HAL_SMARTCARD_STATE_READY;

      return HAL_ERROR;
    }
  }
  else
  {
    return HAL_BUSY;
  }
}

HAL_SMARTCARD_Receive_IT()

HAL_StatusTypeDef HAL_SMARTCARD_Receive_IT	(	SMARTCARD_HandleTypeDef *	hsmartcard,
		uint8_t *	pData,
		uint16_t	Size
	)

Receive an amount of data in interrupt mode.

Note

When FIFO mode is disabled, USART interrupt is generated whenever USART_RDR register can be read, i.e one interrupt per data to receive.

When FIFO mode is enabled, USART interrupt is generated whenever RXFIFO threshold reached. In that case the interrupt rate depends on RXFIFO threshold configuration.

This function sets the hsmartcard->RxIsr function pointer according to the FIFO mode (data reception processing depends on FIFO mode).

Parameters

hsmartcard	Pointer to a SMARTCARD_HandleTypeDef structure that contains the configuration information for the specified SMARTCARD module.
pData	pointer to data buffer.
Size	amount of data to be received.

Return values

HAL

status

Definition at line 1074 of file stm32l4xx_hal_smartcard.c.

{
  /* Check that a Rx process is not already ongoing */
  if (hsmartcard->RxState == HAL_SMARTCARD_STATE_READY)
  {
    if ((pData == NULL) || (Size == 0U))
    {
      return HAL_ERROR;
    }

    /* Process Locked */
    __HAL_LOCK(hsmartcard);

    hsmartcard->ErrorCode = HAL_SMARTCARD_ERROR_NONE;
    hsmartcard->RxState   = HAL_SMARTCARD_STATE_BUSY_RX;

    hsmartcard->pRxBuffPtr = pData;
    hsmartcard->RxXferSize = Size;
    hsmartcard->RxXferCount = Size;

    /* Configure Rx interrupt processing */
#if defined(USART_CR1_FIFOEN)
    if ((hsmartcard->FifoMode == SMARTCARD_FIFOMODE_ENABLE) && (Size >= hsmartcard->NbRxDataToProcess))
    {
      /* Set the Rx ISR function pointer */
      hsmartcard->RxISR = SMARTCARD_RxISR_FIFOEN;

      /* Process Unlocked */
      __HAL_UNLOCK(hsmartcard);

      /* Enable the SMARTCART Parity Error interrupt and RX FIFO Threshold interrupt */
      SET_BIT(hsmartcard->Instance->CR1, USART_CR1_PEIE);
      SET_BIT(hsmartcard->Instance->CR3, USART_CR3_RXFTIE);
    }
    else
    {
      /* Set the Rx ISR function pointer */
      hsmartcard->RxISR = SMARTCARD_RxISR;

      /* Process Unlocked */
      __HAL_UNLOCK(hsmartcard);

      /* Enable the SMARTCARD Parity Error and Data Register not empty Interrupts */
      SET_BIT(hsmartcard->Instance->CR1, USART_CR1_PEIE | USART_CR1_RXNEIE_RXFNEIE);
    }
#else
    /* Set the Rx ISR function pointer */
    hsmartcard->RxISR = SMARTCARD_RxISR;

    /* Process Unlocked */
    __HAL_UNLOCK(hsmartcard);

    /* Enable the SMARTCARD Parity Error and Data Register not empty Interrupts */
    SET_BIT(hsmartcard->Instance->CR1, USART_CR1_PEIE | USART_CR1_RXNEIE);
#endif /* USART_CR1_FIFOEN */

    /* Enable the SMARTCARD Error Interrupt: (Frame error, noise error, overrun error) */
    SET_BIT(hsmartcard->Instance->CR3, USART_CR3_EIE);

    return HAL_OK;
  }
  else
  {
    return HAL_BUSY;
  }
}

HAL_SMARTCARD_RxCpltCallback()

__weak void HAL_SMARTCARD_RxCpltCallback

(

SMARTCARD_HandleTypeDef *

hsmartcard

)

Rx Transfer completed callback.

Parameters

hsmartcard

Pointer to a SMARTCARD_HandleTypeDef structure that contains the configuration information for the specified SMARTCARD module.

Return values

None

Definition at line 2232 of file stm32l4xx_hal_smartcard.c.

{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hsmartcard);

  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_SMARTCARD_RxCpltCallback can be implemented in the user file.
   */
}

HAL_SMARTCARD_Transmit()

HAL_StatusTypeDef HAL_SMARTCARD_Transmit	(	SMARTCARD_HandleTypeDef *	hsmartcard,
		uint8_t *	pData,
		uint16_t	Size,
		uint32_t	Timeout
	)

Send an amount of data in blocking mode.

Note

When FIFO mode is enabled, writing a data in the TDR register adds one data to the TXFIFO. Write operations to the TDR register are performed when TXFNF flag is set. From hardware perspective, TXFNF flag and TXE are mapped on the same bit-field.

Parameters

hsmartcard	Pointer to a SMARTCARD_HandleTypeDef structure that contains the configuration information for the specified SMARTCARD module.
pData	pointer to data buffer.
Size	amount of data to be sent.
Timeout	Timeout duration.

Return values

HAL

status

Definition at line 818 of file stm32l4xx_hal_smartcard.c.

{
  uint32_t tickstart;
  uint8_t  *ptmpdata = pData;

  /* Check that a Tx process is not already ongoing */
  if (hsmartcard->gState == HAL_SMARTCARD_STATE_READY)
  {
    if ((ptmpdata == NULL) || (Size == 0U))
    {
      return  HAL_ERROR;
    }

    /* Process Locked */
    __HAL_LOCK(hsmartcard);

    hsmartcard->gState = HAL_SMARTCARD_STATE_BUSY_TX;

    /* Init tickstart for timeout management */
    tickstart = HAL_GetTick();

    /* Disable the Peripheral first to update mode for TX master */
    CLEAR_BIT(hsmartcard->Instance->CR1, USART_CR1_UE);

    /* Disable Rx, enable Tx */
    CLEAR_BIT(hsmartcard->Instance->CR1, USART_CR1_RE);
    SET_BIT(hsmartcard->Instance->RQR, (uint16_t)SMARTCARD_RXDATA_FLUSH_REQUEST);
    SET_BIT(hsmartcard->Instance->CR1, USART_CR1_TE);

    /* Enable the Peripheral */
    SET_BIT(hsmartcard->Instance->CR1, USART_CR1_UE);

    hsmartcard->ErrorCode = HAL_SMARTCARD_ERROR_NONE;
    hsmartcard->TxXferSize = Size;
    hsmartcard->TxXferCount = Size;

    while (hsmartcard->TxXferCount > 0U)
    {
      hsmartcard->TxXferCount--;
      if (SMARTCARD_WaitOnFlagUntilTimeout(hsmartcard, SMARTCARD_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
      {
        return HAL_TIMEOUT;
      }
      hsmartcard->Instance->TDR = (uint8_t)(*ptmpdata & 0xFFU);
      ptmpdata++;
    }
    if (SMARTCARD_WaitOnFlagUntilTimeout(hsmartcard, SMARTCARD_TRANSMISSION_COMPLETION_FLAG(hsmartcard), RESET, tickstart,
                                         Timeout) != HAL_OK)
    {
      return HAL_TIMEOUT;
    }
    /* Re-enable Rx at end of transmission if initial mode is Rx/Tx */
    if (hsmartcard->Init.Mode == SMARTCARD_MODE_TX_RX)
    {
      /* Disable the Peripheral first to update modes */
      CLEAR_BIT(hsmartcard->Instance->CR1, USART_CR1_UE);
      SET_BIT(hsmartcard->Instance->CR1, USART_CR1_RE);
      /* Enable the Peripheral */
      SET_BIT(hsmartcard->Instance->CR1, USART_CR1_UE);
    }

    /* At end of Tx process, restore hsmartcard->gState to Ready */
    hsmartcard->gState = HAL_SMARTCARD_STATE_READY;

    /* Process Unlocked */
    __HAL_UNLOCK(hsmartcard);

    return HAL_OK;
  }
  else
  {
    return HAL_BUSY;
  }
}

HAL_SMARTCARD_Transmit_DMA()

HAL_StatusTypeDef HAL_SMARTCARD_Transmit_DMA	(	SMARTCARD_HandleTypeDef *	hsmartcard,
		uint8_t *	pData,
		uint16_t	Size
	)

Send an amount of data in DMA mode.

Parameters

hsmartcard	Pointer to a SMARTCARD_HandleTypeDef structure that contains the configuration information for the specified SMARTCARD module.
pData	pointer to data buffer.
Size	amount of data to be sent.

Return values

HAL

status

Definition at line 1149 of file stm32l4xx_hal_smartcard.c.

{
  /* Check that a Tx process is not already ongoing */
  if (hsmartcard->gState == HAL_SMARTCARD_STATE_READY)
  {
    if ((pData == NULL) || (Size == 0U))
    {
      return HAL_ERROR;
    }

    /* Process Locked */
    __HAL_LOCK(hsmartcard);

    hsmartcard->gState = HAL_SMARTCARD_STATE_BUSY_TX;

    hsmartcard->ErrorCode = HAL_SMARTCARD_ERROR_NONE;
    hsmartcard->pTxBuffPtr = pData;
    hsmartcard->TxXferSize = Size;
    hsmartcard->TxXferCount = Size;

    /* Disable the Peripheral first to update mode for TX master */
    CLEAR_BIT(hsmartcard->Instance->CR1, USART_CR1_UE);

    /* Disable Rx, enable Tx */
    CLEAR_BIT(hsmartcard->Instance->CR1, USART_CR1_RE);
    SET_BIT(hsmartcard->Instance->RQR, (uint16_t)SMARTCARD_RXDATA_FLUSH_REQUEST);
    SET_BIT(hsmartcard->Instance->CR1, USART_CR1_TE);

    /* Enable the Peripheral */
    SET_BIT(hsmartcard->Instance->CR1, USART_CR1_UE);

    /* Set the SMARTCARD DMA transfer complete callback */
    hsmartcard->hdmatx->XferCpltCallback = SMARTCARD_DMATransmitCplt;

    /* Set the SMARTCARD error callback */
    hsmartcard->hdmatx->XferErrorCallback = SMARTCARD_DMAError;

    /* Set the DMA abort callback */
    hsmartcard->hdmatx->XferAbortCallback = NULL;

    /* Enable the SMARTCARD transmit DMA channel */
    if (HAL_DMA_Start_IT(hsmartcard->hdmatx, (uint32_t)hsmartcard->pTxBuffPtr, (uint32_t)&hsmartcard->Instance->TDR,
                         Size) == HAL_OK)
    {
      /* Clear the TC flag in the ICR register */
      CLEAR_BIT(hsmartcard->Instance->ICR, USART_ICR_TCCF);

      /* Process Unlocked */
      __HAL_UNLOCK(hsmartcard);

      /* Enable the UART Error Interrupt: (Frame error) */
      SET_BIT(hsmartcard->Instance->CR3, USART_CR3_EIE);

      /* Enable the DMA transfer for transmit request by setting the DMAT bit
         in the SMARTCARD associated USART CR3 register */
      SET_BIT(hsmartcard->Instance->CR3, USART_CR3_DMAT);

      return HAL_OK;
    }
    else
    {
      /* Set error code to DMA */
      hsmartcard->ErrorCode = HAL_SMARTCARD_ERROR_DMA;

      /* Process Unlocked */
      __HAL_UNLOCK(hsmartcard);

      /* Restore hsmartcard->State to ready */
      hsmartcard->gState = HAL_SMARTCARD_STATE_READY;

      return HAL_ERROR;
    }
  }
  else
  {
    return HAL_BUSY;
  }
}

HAL_SMARTCARD_Transmit_IT()

HAL_StatusTypeDef HAL_SMARTCARD_Transmit_IT	(	SMARTCARD_HandleTypeDef *	hsmartcard,
		uint8_t *	pData,
		uint16_t	Size
	)

Send an amount of data in interrupt mode.

Note

When FIFO mode is disabled, USART interrupt is generated whenever USART_TDR register is empty, i.e one interrupt per data to transmit.

When FIFO mode is enabled, USART interrupt is generated whenever TXFIFO threshold reached. In that case the interrupt rate depends on TXFIFO threshold configuration.

This function sets the hsmartcard->TxIsr function pointer according to the FIFO mode (data transmission processing depends on FIFO mode).

Parameters

hsmartcard	Pointer to a SMARTCARD_HandleTypeDef structure that contains the configuration information for the specified SMARTCARD module.
pData	pointer to data buffer.
Size	amount of data to be sent.

Return values

HAL

status

Definition at line 975 of file stm32l4xx_hal_smartcard.c.

{
  /* Check that a Tx process is not already ongoing */
  if (hsmartcard->gState == HAL_SMARTCARD_STATE_READY)
  {
    if ((pData == NULL) || (Size == 0U))
    {
      return HAL_ERROR;
    }

    /* Process Locked */
    __HAL_LOCK(hsmartcard);

    hsmartcard->ErrorCode = HAL_SMARTCARD_ERROR_NONE;
    hsmartcard->gState = HAL_SMARTCARD_STATE_BUSY_TX;

    hsmartcard->pTxBuffPtr  = pData;
    hsmartcard->TxXferSize  = Size;
    hsmartcard->TxXferCount = Size;
    hsmartcard->TxISR       = NULL;

    /* Disable the Peripheral first to update mode for TX master */
    CLEAR_BIT(hsmartcard->Instance->CR1, USART_CR1_UE);

    /* Disable Rx, enable Tx */
    CLEAR_BIT(hsmartcard->Instance->CR1, USART_CR1_RE);
    SET_BIT(hsmartcard->Instance->RQR, (uint16_t)SMARTCARD_RXDATA_FLUSH_REQUEST);
    SET_BIT(hsmartcard->Instance->CR1, USART_CR1_TE);

    /* Enable the Peripheral */
    SET_BIT(hsmartcard->Instance->CR1, USART_CR1_UE);

    /* Configure Tx interrupt processing */
#if defined(USART_CR1_FIFOEN)
    if (hsmartcard->FifoMode == SMARTCARD_FIFOMODE_ENABLE)
    {
      /* Set the Tx ISR function pointer */
      hsmartcard->TxISR = SMARTCARD_TxISR_FIFOEN;

      /* Process Unlocked */
      __HAL_UNLOCK(hsmartcard);

      /* Enable the SMARTCARD Error Interrupt: (Frame error) */
      SET_BIT(hsmartcard->Instance->CR3, USART_CR3_EIE);

      /* Enable the TX FIFO threshold interrupt */
      SET_BIT(hsmartcard->Instance->CR3, USART_CR3_TXFTIE);
    }
    else
    {
      /* Set the Tx ISR function pointer */
      hsmartcard->TxISR = SMARTCARD_TxISR;

      /* Process Unlocked */
      __HAL_UNLOCK(hsmartcard);

      /* Enable the SMARTCARD Error Interrupt: (Frame error) */
      SET_BIT(hsmartcard->Instance->CR3, USART_CR3_EIE);

      /* Enable the SMARTCARD Transmit Data Register Empty Interrupt */
      SET_BIT(hsmartcard->Instance->CR1, USART_CR1_TXEIE_TXFNFIE);
    }
#else
    /* Set the Tx ISR function pointer */
    hsmartcard->TxISR = SMARTCARD_TxISR;

    /* Process Unlocked */
    __HAL_UNLOCK(hsmartcard);

    /* Enable the SMARTCARD Error Interrupt: (Frame error) */
    SET_BIT(hsmartcard->Instance->CR3, USART_CR3_EIE);

    /* Enable the SMARTCARD Transmit Data Register Empty Interrupt */
    SET_BIT(hsmartcard->Instance->CR1, USART_CR1_TXEIE);
#endif /* USART_CR1_FIFOEN */

    return HAL_OK;
  }
  else
  {
    return HAL_BUSY;
  }
}

HAL_SMARTCARD_TxCpltCallback()

__weak void HAL_SMARTCARD_TxCpltCallback

(

SMARTCARD_HandleTypeDef *

hsmartcard

)

Tx Transfer completed callback.

Parameters

hsmartcard

Pointer to a SMARTCARD_HandleTypeDef structure that contains the configuration information for the specified SMARTCARD module.

Return values

None

Definition at line 2216 of file stm32l4xx_hal_smartcard.c.

{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hsmartcard);

  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_SMARTCARD_TxCpltCallback can be implemented in the user file.
   */
}