SPI Private Functions

Private functions. More...

Functions
static void	SPI_DMATransmitCplt (DMA_HandleTypeDef *hdma)
	DMA SPI transmit process complete callback. More...
static void	SPI_DMAReceiveCplt (DMA_HandleTypeDef *hdma)
	DMA SPI receive process complete callback. More...
static void	SPI_DMATransmitReceiveCplt (DMA_HandleTypeDef *hdma)
	DMA SPI transmit receive process complete callback. More...
static void	SPI_DMAHalfTransmitCplt (DMA_HandleTypeDef *hdma)
	DMA SPI half transmit process complete callback. More...
static void	SPI_DMAHalfReceiveCplt (DMA_HandleTypeDef *hdma)
	DMA SPI half receive process complete callback. More...
static void	SPI_DMAHalfTransmitReceiveCplt (DMA_HandleTypeDef *hdma)
	DMA SPI half transmit receive process complete callback. More...
static void	SPI_DMAError (DMA_HandleTypeDef *hdma)
	DMA SPI communication error callback. More...
static void	SPI_DMAAbortOnError (DMA_HandleTypeDef *hdma)
	DMA SPI communication abort callback, when initiated by HAL services on Error (To be called at end of DMA Abort procedure following error occurrence). More...
static void	SPI_DMATxAbortCallback (DMA_HandleTypeDef *hdma)
	DMA SPI Tx communication abort callback, when initiated by user (To be called at end of DMA Tx Abort procedure following user abort request). More...
static void	SPI_DMARxAbortCallback (DMA_HandleTypeDef *hdma)
	DMA SPI Rx communication abort callback, when initiated by user (To be called at end of DMA Rx Abort procedure following user abort request). More...
static HAL_StatusTypeDef	SPI_WaitFlagStateUntilTimeout (SPI_HandleTypeDef *hspi, uint32_t Flag, FlagStatus State, uint32_t Timeout, uint32_t Tickstart)
	Handle SPI Communication Timeout. More...
static HAL_StatusTypeDef	SPI_WaitFifoStateUntilTimeout (SPI_HandleTypeDef *hspi, uint32_t Fifo, uint32_t State, uint32_t Timeout, uint32_t Tickstart)
	Handle SPI FIFO Communication Timeout. More...
static void	SPI_TxISR_8BIT (struct __SPI_HandleTypeDef *hspi)
	Handle the data 8-bit transmit in Interrupt mode. More...
static void	SPI_TxISR_16BIT (struct __SPI_HandleTypeDef *hspi)
	Handle the data 16-bit transmit in Interrupt mode. More...
static void	SPI_RxISR_8BIT (struct __SPI_HandleTypeDef *hspi)
	Manage the receive 8-bit in Interrupt context. More...
static void	SPI_RxISR_16BIT (struct __SPI_HandleTypeDef *hspi)
	Manage the 16-bit receive in Interrupt context. More...
static void	SPI_2linesRxISR_8BIT (struct __SPI_HandleTypeDef *hspi)
	Rx 8-bit handler for Transmit and Receive in Interrupt mode. More...
static void	SPI_2linesTxISR_8BIT (struct __SPI_HandleTypeDef *hspi)
	Tx 8-bit handler for Transmit and Receive in Interrupt mode. More...
static void	SPI_2linesTxISR_16BIT (struct __SPI_HandleTypeDef *hspi)
	Tx 16-bit handler for Transmit and Receive in Interrupt mode. More...
static void	SPI_2linesRxISR_16BIT (struct __SPI_HandleTypeDef *hspi)
	Rx 16-bit handler for Transmit and Receive in Interrupt mode. More...
static void	SPI_RxISR_8BITCRC (struct __SPI_HandleTypeDef *hspi)
	Manage the CRC 8-bit receive in Interrupt context. More...
static void	SPI_RxISR_16BITCRC (struct __SPI_HandleTypeDef *hspi)
	Manage the CRC 16-bit receive in Interrupt context. More...
static void	SPI_2linesRxISR_8BITCRC (struct __SPI_HandleTypeDef *hspi)
	Rx 8-bit handler for Transmit and Receive in Interrupt mode. More...
static void	SPI_2linesRxISR_16BITCRC (struct __SPI_HandleTypeDef *hspi)
	Manage the CRC 16-bit receive for Transmit and Receive in Interrupt mode. More...
static void	SPI_AbortRx_ISR (SPI_HandleTypeDef *hspi)
	Handle abort a Rx transaction. More...
static void	SPI_AbortTx_ISR (SPI_HandleTypeDef *hspi)
	Handle abort a Tx or Rx/Tx transaction. More...
static void	SPI_CloseRxTx_ISR (SPI_HandleTypeDef *hspi)
	Handle the end of the RXTX transaction. More...
static void	SPI_CloseRx_ISR (SPI_HandleTypeDef *hspi)
	Handle the end of the RX transaction. More...
static void	SPI_CloseTx_ISR (SPI_HandleTypeDef *hspi)
	Handle the end of the TX transaction. More...
static HAL_StatusTypeDef	SPI_EndRxTransaction (SPI_HandleTypeDef *hspi, uint32_t Timeout, uint32_t Tickstart)
	Handle the check of the RX transaction complete. More...
static HAL_StatusTypeDef	SPI_EndRxTxTransaction (SPI_HandleTypeDef *hspi, uint32_t Timeout, uint32_t Tickstart)
	Handle the check of the RXTX or TX transaction complete. More...

Detailed Description

Private functions.

Function Documentation

SPI_2linesRxISR_16BIT()

static void SPI_2linesRxISR_16BIT ( struct __SPI_HandleTypeDef *  hspi )

static

Rx 16-bit handler for Transmit and Receive in Interrupt mode.

Parameters

hspi	pointer to a SPI_HandleTypeDef structure that contains the configuration information for SPI module.

Return values

None

Definition at line 3537 of file stm32l4xx_hal_spi.c.

{
  /* Receive data in 16 Bit mode */
  *((uint16_t *)hspi->pRxBuffPtr) = (uint16_t)(hspi->Instance->DR);
  hspi->pRxBuffPtr += sizeof(uint16_t);
  hspi->RxXferCount--;

  if (hspi->RxXferCount == 0U)
  {
#if (USE_SPI_CRC != 0U)
    if (hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE)
    {
      hspi->RxISR =  SPI_2linesRxISR_16BITCRC;
      return;
    }
#endif /* USE_SPI_CRC */

    /* Disable RXNE interrupt */
    __HAL_SPI_DISABLE_IT(hspi, SPI_IT_RXNE);

    if (hspi->TxXferCount == 0U)
    {
      SPI_CloseRxTx_ISR(hspi);
    }
  }
}

SPI_2linesRxISR_16BITCRC()

static void SPI_2linesRxISR_16BITCRC ( struct __SPI_HandleTypeDef *  hspi )

static

Manage the CRC 16-bit receive for Transmit and Receive in Interrupt mode.

Parameters

hspi	pointer to a SPI_HandleTypeDef structure that contains the configuration information for SPI module.

Return values

None

Definition at line 3571 of file stm32l4xx_hal_spi.c.

{
  /* Read 16bit CRC to flush Data Regsiter */
  READ_REG(hspi->Instance->DR);

  /* Disable RXNE interrupt */
  __HAL_SPI_DISABLE_IT(hspi, SPI_IT_RXNE);

  SPI_CloseRxTx_ISR(hspi);
}

SPI_2linesRxISR_8BIT()

static void SPI_2linesRxISR_8BIT ( struct __SPI_HandleTypeDef *  hspi )

static

Rx 8-bit handler for Transmit and Receive in Interrupt mode.

Parameters

hspi	pointer to a SPI_HandleTypeDef structure that contains the configuration information for SPI module.

Return values

None

Definition at line 3412 of file stm32l4xx_hal_spi.c.

{
  /* Receive data in packing mode */
  if (hspi->RxXferCount > 1U)
  {
    *((uint16_t *)hspi->pRxBuffPtr) = (uint16_t)(hspi->Instance->DR);
    hspi->pRxBuffPtr += sizeof(uint16_t);
    hspi->RxXferCount -= 2U;
    if (hspi->RxXferCount == 1U)
    {
      /* Set RX Fifo threshold according the reception data length: 8bit */
      SET_BIT(hspi->Instance->CR2, SPI_RXFIFO_THRESHOLD);
    }
  }
  /* Receive data in 8 Bit mode */
  else
  {
    *hspi->pRxBuffPtr = *((__IO uint8_t *)&hspi->Instance->DR);
    hspi->pRxBuffPtr++;
    hspi->RxXferCount--;
  }

  /* Check end of the reception */
  if (hspi->RxXferCount == 0U)
  {
#if (USE_SPI_CRC != 0U)
    if (hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE)
    {
      SET_BIT(hspi->Instance->CR2, SPI_RXFIFO_THRESHOLD);
      hspi->RxISR =  SPI_2linesRxISR_8BITCRC;
      return;
    }
#endif /* USE_SPI_CRC */

    /* Disable RXNE  and ERR interrupt */
    __HAL_SPI_DISABLE_IT(hspi, (SPI_IT_RXNE | SPI_IT_ERR));

    if (hspi->TxXferCount == 0U)
    {
      SPI_CloseRxTx_ISR(hspi);
    }
  }
}

SPI_2linesRxISR_8BITCRC()

static void SPI_2linesRxISR_8BITCRC ( struct __SPI_HandleTypeDef *  hspi )

static

Rx 8-bit handler for Transmit and Receive in Interrupt mode.

Parameters

hspi	pointer to a SPI_HandleTypeDef structure that contains the configuration information for SPI module.

Return values

None

Definition at line 3463 of file stm32l4xx_hal_spi.c.

{
  /* Read 8bit CRC to flush Data Regsiter */
  READ_REG(*(__IO uint8_t *)&hspi->Instance->DR);

  hspi->CRCSize--;

  /* Check end of the reception */
  if (hspi->CRCSize == 0U)
  {
    /* Disable RXNE and ERR interrupt */
    __HAL_SPI_DISABLE_IT(hspi, (SPI_IT_RXNE | SPI_IT_ERR));

    if (hspi->TxXferCount == 0U)
    {
      SPI_CloseRxTx_ISR(hspi);
    }
  }
}

SPI_2linesTxISR_16BIT()

static void SPI_2linesTxISR_16BIT ( struct __SPI_HandleTypeDef *  hspi )

static

Tx 16-bit handler for Transmit and Receive in Interrupt mode.

Parameters

hspi	pointer to a SPI_HandleTypeDef structure that contains the configuration information for SPI module.

Return values

None

Definition at line 3589 of file stm32l4xx_hal_spi.c.

{
  /* Transmit data in 16 Bit mode */
  hspi->Instance->DR = *((uint16_t *)hspi->pTxBuffPtr);
  hspi->pTxBuffPtr += sizeof(uint16_t);
  hspi->TxXferCount--;

  /* Enable CRC Transmission */
  if (hspi->TxXferCount == 0U)
  {
#if (USE_SPI_CRC != 0U)
    if (hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE)
    {
      /* Set CRC Next Bit to send CRC */
      SET_BIT(hspi->Instance->CR1, SPI_CR1_CRCNEXT);
      /* Disable TXE interrupt */
      __HAL_SPI_DISABLE_IT(hspi, SPI_IT_TXE);
      return;
    }
#endif /* USE_SPI_CRC */

    /* Disable TXE interrupt */
    __HAL_SPI_DISABLE_IT(hspi, SPI_IT_TXE);

    if (hspi->RxXferCount == 0U)
    {
      SPI_CloseRxTx_ISR(hspi);
    }
  }
}

SPI_2linesTxISR_8BIT()

static void SPI_2linesTxISR_8BIT ( struct __SPI_HandleTypeDef *  hspi )

static

Tx 8-bit handler for Transmit and Receive in Interrupt mode.

Parameters

hspi	pointer to a SPI_HandleTypeDef structure that contains the configuration information for SPI module.

Return values

None

Definition at line 3490 of file stm32l4xx_hal_spi.c.

{
  /* Transmit data in packing Bit mode */
  if (hspi->TxXferCount >= 2U)
  {
    hspi->Instance->DR = *((uint16_t *)hspi->pTxBuffPtr);
    hspi->pTxBuffPtr += sizeof(uint16_t);
    hspi->TxXferCount -= 2U;
  }
  /* Transmit data in 8 Bit mode */
  else
  {
    *(__IO uint8_t *)&hspi->Instance->DR = (*hspi->pTxBuffPtr);
    hspi->pTxBuffPtr++;
    hspi->TxXferCount--;
  }

  /* Check the end of the transmission */
  if (hspi->TxXferCount == 0U)
  {
#if (USE_SPI_CRC != 0U)
    if (hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE)
    {
      /* Set CRC Next Bit to send CRC */
      SET_BIT(hspi->Instance->CR1, SPI_CR1_CRCNEXT);
      /* Disable TXE interrupt */
      __HAL_SPI_DISABLE_IT(hspi, SPI_IT_TXE);
      return;
    }
#endif /* USE_SPI_CRC */

    /* Disable TXE interrupt */
    __HAL_SPI_DISABLE_IT(hspi, SPI_IT_TXE);

    if (hspi->RxXferCount == 0U)
    {
      SPI_CloseRxTx_ISR(hspi);
    }
  }
}

SPI_AbortRx_ISR()

static void SPI_AbortRx_ISR ( SPI_HandleTypeDef *  hspi )

static

Handle abort a Rx transaction.

Parameters

hspi	pointer to a SPI_HandleTypeDef structure that contains the configuration information for SPI module.

Return values

None

Definition at line 4146 of file stm32l4xx_hal_spi.c.

{
  __IO uint32_t count;

  /* Disable SPI Peripheral */
  __HAL_SPI_DISABLE(hspi);

  count = SPI_DEFAULT_TIMEOUT * (SystemCoreClock / 24U / 1000U);

  /* Disable RXNEIE interrupt */
  CLEAR_BIT(hspi->Instance->CR2, (SPI_CR2_RXNEIE));

  /* Check RXNEIE is disabled */
  do
  {
    if (count == 0U)
    {
      SET_BIT(hspi->ErrorCode, HAL_SPI_ERROR_ABORT);
      break;
    }
    count--;
  }
  while (HAL_IS_BIT_SET(hspi->Instance->CR2, SPI_CR2_RXNEIE));

  /* Control the BSY flag */
  if (SPI_WaitFlagStateUntilTimeout(hspi, SPI_FLAG_BSY, RESET, SPI_DEFAULT_TIMEOUT, HAL_GetTick()) != HAL_OK)
  {
    hspi->ErrorCode = HAL_SPI_ERROR_ABORT;
  }

  /* Empty the FRLVL fifo */
  if (SPI_WaitFifoStateUntilTimeout(hspi, SPI_FLAG_FRLVL, SPI_FRLVL_EMPTY, SPI_DEFAULT_TIMEOUT, HAL_GetTick()) != HAL_OK)
  {
    hspi->ErrorCode = HAL_SPI_ERROR_ABORT;
  }

  hspi->State = HAL_SPI_STATE_ABORT;
}

SPI_AbortTx_ISR()

static void SPI_AbortTx_ISR ( SPI_HandleTypeDef *  hspi )

static

Handle abort a Tx or Rx/Tx transaction.

Parameters

hspi	pointer to a SPI_HandleTypeDef structure that contains the configuration information for SPI module.

Return values

None

Definition at line 4191 of file stm32l4xx_hal_spi.c.

{
  __IO uint32_t count;

  count = SPI_DEFAULT_TIMEOUT * (SystemCoreClock / 24U / 1000U);

  /* Disable TXEIE interrupt */
  CLEAR_BIT(hspi->Instance->CR2, (SPI_CR2_TXEIE));

  /* Check TXEIE is disabled */
  do
  {
    if (count == 0U)
    {
      SET_BIT(hspi->ErrorCode, HAL_SPI_ERROR_ABORT);
      break;
    }
    count--;
  }
  while (HAL_IS_BIT_SET(hspi->Instance->CR2, SPI_CR2_TXEIE));

  if (SPI_EndRxTxTransaction(hspi, SPI_DEFAULT_TIMEOUT, HAL_GetTick()) != HAL_OK)
  {
    hspi->ErrorCode = HAL_SPI_ERROR_ABORT;
  }

  /* Disable SPI Peripheral */
  __HAL_SPI_DISABLE(hspi);

  /* Empty the FRLVL fifo */
  if (SPI_WaitFifoStateUntilTimeout(hspi, SPI_FLAG_FRLVL, SPI_FRLVL_EMPTY, SPI_DEFAULT_TIMEOUT, HAL_GetTick()) != HAL_OK)
  {
    hspi->ErrorCode = HAL_SPI_ERROR_ABORT;
  }

  /* Check case of Full-Duplex Mode and disable directly RXNEIE interrupt */
  if (HAL_IS_BIT_SET(hspi->Instance->CR2, SPI_CR2_RXNEIE))
  {
    /* Disable RXNEIE interrupt */
    CLEAR_BIT(hspi->Instance->CR2, (SPI_CR2_RXNEIE));

    /* Check RXNEIE is disabled */
    do
    {
      if (count == 0U)
      {
        SET_BIT(hspi->ErrorCode, HAL_SPI_ERROR_ABORT);
        break;
      }
      count--;
    }
    while (HAL_IS_BIT_SET(hspi->Instance->CR2, SPI_CR2_RXNEIE));

    /* Control the BSY flag */
    if (SPI_WaitFlagStateUntilTimeout(hspi, SPI_FLAG_BSY, RESET, SPI_DEFAULT_TIMEOUT, HAL_GetTick()) != HAL_OK)
    {
      hspi->ErrorCode = HAL_SPI_ERROR_ABORT;
    }

    /* Empty the FRLVL fifo */
    if (SPI_WaitFifoStateUntilTimeout(hspi, SPI_FLAG_FRLVL, SPI_FRLVL_EMPTY, SPI_DEFAULT_TIMEOUT, HAL_GetTick()) != HAL_OK)
    {
      hspi->ErrorCode = HAL_SPI_ERROR_ABORT;
    }
  }
  hspi->State = HAL_SPI_STATE_ABORT;
}

SPI_CloseRx_ISR()

static void SPI_CloseRx_ISR ( SPI_HandleTypeDef *  hspi )

static

Handle the end of the RX transaction.

Parameters

hspi	pointer to a SPI_HandleTypeDef structure that contains the configuration information for SPI module.

Return values

None

Definition at line 4040 of file stm32l4xx_hal_spi.c.

{
  /* Disable RXNE and ERR interrupt */
  __HAL_SPI_DISABLE_IT(hspi, (SPI_IT_RXNE | SPI_IT_ERR));

  /* Check the end of the transaction */
  if (SPI_EndRxTransaction(hspi, SPI_DEFAULT_TIMEOUT, HAL_GetTick()) != HAL_OK)
  {
    SET_BIT(hspi->ErrorCode, HAL_SPI_ERROR_FLAG);
  }
  hspi->State = HAL_SPI_STATE_READY;

#if (USE_SPI_CRC != 0U)
  /* Check if CRC error occurred */
  if (__HAL_SPI_GET_FLAG(hspi, SPI_FLAG_CRCERR) != RESET)
  {
    SET_BIT(hspi->ErrorCode, HAL_SPI_ERROR_CRC);
    __HAL_SPI_CLEAR_CRCERRFLAG(hspi);
    /* Call user error callback */
#if (USE_HAL_SPI_REGISTER_CALLBACKS == 1U)
    hspi->ErrorCallback(hspi);
#else
    HAL_SPI_ErrorCallback(hspi);
#endif /* USE_HAL_SPI_REGISTER_CALLBACKS */
  }
  else
  {
#endif /* USE_SPI_CRC */
    if (hspi->ErrorCode == HAL_SPI_ERROR_NONE)
    {
      /* Call user Rx complete callback */
#if (USE_HAL_SPI_REGISTER_CALLBACKS == 1U)
      hspi->RxCpltCallback(hspi);
#else
      HAL_SPI_RxCpltCallback(hspi);
#endif /* USE_HAL_SPI_REGISTER_CALLBACKS */
    }
    else
    {
      /* Call user error callback */
#if (USE_HAL_SPI_REGISTER_CALLBACKS == 1U)
      hspi->ErrorCallback(hspi);
#else
      HAL_SPI_ErrorCallback(hspi);
#endif /* USE_HAL_SPI_REGISTER_CALLBACKS */
    }
#if (USE_SPI_CRC != 0U)
  }
#endif /* USE_SPI_CRC */
}

SPI_CloseRxTx_ISR()

static void SPI_CloseRxTx_ISR ( SPI_HandleTypeDef *  hspi )

static

Handle the end of the RXTX transaction.

Parameters

hspi	pointer to a SPI_HandleTypeDef structure that contains the configuration information for SPI module.

Return values

None

Definition at line 3963 of file stm32l4xx_hal_spi.c.

{
  uint32_t tickstart;

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

  /* Disable ERR interrupt */
  __HAL_SPI_DISABLE_IT(hspi, SPI_IT_ERR);

  /* Check the end of the transaction */
  if (SPI_EndRxTxTransaction(hspi, SPI_DEFAULT_TIMEOUT, tickstart) != HAL_OK)
  {
    SET_BIT(hspi->ErrorCode, HAL_SPI_ERROR_FLAG);
  }

#if (USE_SPI_CRC != 0U)
  /* Check if CRC error occurred */
  if (__HAL_SPI_GET_FLAG(hspi, SPI_FLAG_CRCERR) != RESET)
  {
    hspi->State = HAL_SPI_STATE_READY;
    SET_BIT(hspi->ErrorCode, HAL_SPI_ERROR_CRC);
    __HAL_SPI_CLEAR_CRCERRFLAG(hspi);
    /* Call user error callback */
#if (USE_HAL_SPI_REGISTER_CALLBACKS == 1U)
    hspi->ErrorCallback(hspi);
#else
    HAL_SPI_ErrorCallback(hspi);
#endif /* USE_HAL_SPI_REGISTER_CALLBACKS */
  }
  else
  {
#endif /* USE_SPI_CRC */
    if (hspi->ErrorCode == HAL_SPI_ERROR_NONE)
    {
      if (hspi->State == HAL_SPI_STATE_BUSY_RX)
      {
        hspi->State = HAL_SPI_STATE_READY;
        /* Call user Rx complete callback */
#if (USE_HAL_SPI_REGISTER_CALLBACKS == 1U)
        hspi->RxCpltCallback(hspi);
#else
        HAL_SPI_RxCpltCallback(hspi);
#endif /* USE_HAL_SPI_REGISTER_CALLBACKS */
      }
      else
      {
        hspi->State = HAL_SPI_STATE_READY;
        /* Call user TxRx complete callback */
#if (USE_HAL_SPI_REGISTER_CALLBACKS == 1U)
        hspi->TxRxCpltCallback(hspi);
#else
        HAL_SPI_TxRxCpltCallback(hspi);
#endif /* USE_HAL_SPI_REGISTER_CALLBACKS */
      }
    }
    else
    {
      hspi->State = HAL_SPI_STATE_READY;
      /* Call user error callback */
#if (USE_HAL_SPI_REGISTER_CALLBACKS == 1U)
      hspi->ErrorCallback(hspi);
#else
      HAL_SPI_ErrorCallback(hspi);
#endif /* USE_HAL_SPI_REGISTER_CALLBACKS */
    }
#if (USE_SPI_CRC != 0U)
  }
#endif /* USE_SPI_CRC */
}

SPI_CloseTx_ISR()

static void SPI_CloseTx_ISR ( SPI_HandleTypeDef *  hspi )

static

Handle the end of the TX transaction.

Parameters

hspi	pointer to a SPI_HandleTypeDef structure that contains the configuration information for SPI module.

Return values

None

Definition at line 4097 of file stm32l4xx_hal_spi.c.

{
  uint32_t tickstart;

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

  /* Disable TXE and ERR interrupt */
  __HAL_SPI_DISABLE_IT(hspi, (SPI_IT_TXE | SPI_IT_ERR));

  /* Check the end of the transaction */
  if (SPI_EndRxTxTransaction(hspi, SPI_DEFAULT_TIMEOUT, tickstart) != HAL_OK)
  {
    SET_BIT(hspi->ErrorCode, HAL_SPI_ERROR_FLAG);
  }

  /* Clear overrun flag in 2 Lines communication mode because received is not read */
  if (hspi->Init.Direction == SPI_DIRECTION_2LINES)
  {
    __HAL_SPI_CLEAR_OVRFLAG(hspi);
  }

  hspi->State = HAL_SPI_STATE_READY;
  if (hspi->ErrorCode != HAL_SPI_ERROR_NONE)
  {
    /* Call user error callback */
#if (USE_HAL_SPI_REGISTER_CALLBACKS == 1U)
    hspi->ErrorCallback(hspi);
#else
    HAL_SPI_ErrorCallback(hspi);
#endif /* USE_HAL_SPI_REGISTER_CALLBACKS */
  }
  else
  {
    /* Call user Rx complete callback */
#if (USE_HAL_SPI_REGISTER_CALLBACKS == 1U)
    hspi->TxCpltCallback(hspi);
#else
    HAL_SPI_TxCpltCallback(hspi);
#endif /* USE_HAL_SPI_REGISTER_CALLBACKS */
  }
}

SPI_DMAAbortOnError()

static void SPI_DMAAbortOnError ( DMA_HandleTypeDef *  hdma )

static

DMA SPI communication abort callback, when initiated by HAL services on Error (To be called at end of DMA Abort procedure following error occurrence).

Parameters

hdma	DMA handle.

Return values

None

Definition at line 3259 of file stm32l4xx_hal_spi.c.

{
  SPI_HandleTypeDef *hspi = (SPI_HandleTypeDef *)(((DMA_HandleTypeDef *)hdma)->Parent); /* Derogation MISRAC2012-Rule-11.5 */
  hspi->RxXferCount = 0U;
  hspi->TxXferCount = 0U;

  /* Call user error callback */
#if (USE_HAL_SPI_REGISTER_CALLBACKS == 1U)
  hspi->ErrorCallback(hspi);
#else
  HAL_SPI_ErrorCallback(hspi);
#endif /* USE_HAL_SPI_REGISTER_CALLBACKS */
}

SPI_DMAError()

static void SPI_DMAError ( DMA_HandleTypeDef *  hdma )

static

DMA SPI communication error callback.

Parameters

hdma	pointer to a DMA_HandleTypeDef structure that contains the configuration information for the specified DMA module.

Return values

None

Definition at line 3236 of file stm32l4xx_hal_spi.c.

{
  SPI_HandleTypeDef *hspi = (SPI_HandleTypeDef *)(((DMA_HandleTypeDef *)hdma)->Parent); /* Derogation MISRAC2012-Rule-11.5 */

  /* Stop the disable DMA transfer on SPI side */
  CLEAR_BIT(hspi->Instance->CR2, SPI_CR2_TXDMAEN | SPI_CR2_RXDMAEN);

  SET_BIT(hspi->ErrorCode, HAL_SPI_ERROR_DMA);
  hspi->State = HAL_SPI_STATE_READY;
  /* Call user error callback */
#if (USE_HAL_SPI_REGISTER_CALLBACKS == 1U)
  hspi->ErrorCallback(hspi);
#else
  HAL_SPI_ErrorCallback(hspi);
#endif /* USE_HAL_SPI_REGISTER_CALLBACKS */
}

SPI_DMAHalfReceiveCplt()

static void SPI_DMAHalfReceiveCplt ( DMA_HandleTypeDef *  hdma )

static

DMA SPI half receive process complete callback.

Parameters

hdma	pointer to a DMA_HandleTypeDef structure that contains the configuration information for the specified DMA module.

Return values

None

Definition at line 3200 of file stm32l4xx_hal_spi.c.

{
  SPI_HandleTypeDef *hspi = (SPI_HandleTypeDef *)(((DMA_HandleTypeDef *)hdma)->Parent); /* Derogation MISRAC2012-Rule-11.5 */

  /* Call user Rx half complete callback */
#if (USE_HAL_SPI_REGISTER_CALLBACKS == 1U)
  hspi->RxHalfCpltCallback(hspi);
#else
  HAL_SPI_RxHalfCpltCallback(hspi);
#endif /* USE_HAL_SPI_REGISTER_CALLBACKS */
}

SPI_DMAHalfTransmitCplt()

static void SPI_DMAHalfTransmitCplt ( DMA_HandleTypeDef *  hdma )

static

DMA SPI half transmit process complete callback.

Parameters

hdma	pointer to a DMA_HandleTypeDef structure that contains the configuration information for the specified DMA module.

Return values

None

Definition at line 3182 of file stm32l4xx_hal_spi.c.

{
  SPI_HandleTypeDef *hspi = (SPI_HandleTypeDef *)(((DMA_HandleTypeDef *)hdma)->Parent); /* Derogation MISRAC2012-Rule-11.5 */

  /* Call user Tx half complete callback */
#if (USE_HAL_SPI_REGISTER_CALLBACKS == 1U)
  hspi->TxHalfCpltCallback(hspi);
#else
  HAL_SPI_TxHalfCpltCallback(hspi);
#endif /* USE_HAL_SPI_REGISTER_CALLBACKS */
}

SPI_DMAHalfTransmitReceiveCplt()

static void SPI_DMAHalfTransmitReceiveCplt ( DMA_HandleTypeDef *  hdma )

static

DMA SPI half transmit receive process complete callback.

Parameters

hdma	pointer to a DMA_HandleTypeDef structure that contains the configuration information for the specified DMA module.

Return values

None

Definition at line 3218 of file stm32l4xx_hal_spi.c.

{
  SPI_HandleTypeDef *hspi = (SPI_HandleTypeDef *)(((DMA_HandleTypeDef *)hdma)->Parent); /* Derogation MISRAC2012-Rule-11.5 */

  /* Call user TxRx half complete callback */
#if (USE_HAL_SPI_REGISTER_CALLBACKS == 1U)
  hspi->TxRxHalfCpltCallback(hspi);
#else
  HAL_SPI_TxRxHalfCpltCallback(hspi);
#endif /* USE_HAL_SPI_REGISTER_CALLBACKS */
}

SPI_DMAReceiveCplt()

static void SPI_DMAReceiveCplt ( DMA_HandleTypeDef *  hdma )

static

DMA SPI receive process complete callback.

Parameters

hdma	pointer to a DMA_HandleTypeDef structure that contains the configuration information for the specified DMA module.

Return values

None

Definition at line 2998 of file stm32l4xx_hal_spi.c.

{
  SPI_HandleTypeDef *hspi = (SPI_HandleTypeDef *)(((DMA_HandleTypeDef *)hdma)->Parent); /* Derogation MISRAC2012-Rule-11.5 */
  uint32_t tickstart;

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

  /* DMA Normal Mode */
  if ((hdma->Instance->CCR & DMA_CCR_CIRC) != DMA_CCR_CIRC)
  {
    /* Disable ERR interrupt */
    __HAL_SPI_DISABLE_IT(hspi, SPI_IT_ERR);

#if (USE_SPI_CRC != 0U)
    /* CRC handling */
    if (hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE)
    {
      /* Wait until RXNE flag */
      if (SPI_WaitFlagStateUntilTimeout(hspi, SPI_FLAG_RXNE, SET, SPI_DEFAULT_TIMEOUT, tickstart) != HAL_OK)
      {
        /* Error on the CRC reception */
        SET_BIT(hspi->ErrorCode, HAL_SPI_ERROR_CRC);
      }
      /* Read CRC */
      if (hspi->Init.DataSize > SPI_DATASIZE_8BIT)
      {
        /* Read 16bit CRC */
        READ_REG(hspi->Instance->DR);
      }
      else
      {
        /* Read 8bit CRC */
        READ_REG(*(__IO uint8_t *)&hspi->Instance->DR);

        if (hspi->Init.CRCLength == SPI_CRC_LENGTH_16BIT)
        {
          if (SPI_WaitFlagStateUntilTimeout(hspi, SPI_FLAG_RXNE, SET, SPI_DEFAULT_TIMEOUT, tickstart) != HAL_OK)
          {
            /* Error on the CRC reception */
            SET_BIT(hspi->ErrorCode, HAL_SPI_ERROR_CRC);
          }
          /* Read 8bit CRC again in case of 16bit CRC in 8bit Data mode */
          READ_REG(*(__IO uint8_t *)&hspi->Instance->DR);
        }
      }
    }
#endif /* USE_SPI_CRC */

    /* Disable Rx/Tx DMA Request (done by default to handle the case master rx direction 2 lines) */
    CLEAR_BIT(hspi->Instance->CR2, SPI_CR2_TXDMAEN | SPI_CR2_RXDMAEN);

    /* Check the end of the transaction */
    if (SPI_EndRxTransaction(hspi, SPI_DEFAULT_TIMEOUT, tickstart) != HAL_OK)
    {
      hspi->ErrorCode = HAL_SPI_ERROR_FLAG;
    }

    hspi->RxXferCount = 0U;
    hspi->State = HAL_SPI_STATE_READY;

#if (USE_SPI_CRC != 0U)
    /* Check if CRC error occurred */
    if (__HAL_SPI_GET_FLAG(hspi, SPI_FLAG_CRCERR))
    {
      SET_BIT(hspi->ErrorCode, HAL_SPI_ERROR_CRC);
      __HAL_SPI_CLEAR_CRCERRFLAG(hspi);
    }
#endif /* USE_SPI_CRC */

    if (hspi->ErrorCode != HAL_SPI_ERROR_NONE)
    {
      /* Call user error callback */
#if (USE_HAL_SPI_REGISTER_CALLBACKS == 1U)
      hspi->ErrorCallback(hspi);
#else
      HAL_SPI_ErrorCallback(hspi);
#endif /* USE_HAL_SPI_REGISTER_CALLBACKS */
      return;
    }
  }
  /* Call user Rx complete callback */
#if (USE_HAL_SPI_REGISTER_CALLBACKS == 1U)
  hspi->RxCpltCallback(hspi);
#else
  HAL_SPI_RxCpltCallback(hspi);
#endif /* USE_HAL_SPI_REGISTER_CALLBACKS */
}

SPI_DMARxAbortCallback()

static void SPI_DMARxAbortCallback ( DMA_HandleTypeDef *  hdma )

static

DMA SPI Rx communication abort callback, when initiated by user (To be called at end of DMA Rx Abort procedure following user abort request).

Note

When this callback is executed, User Abort complete call back is called only if no Abort still ongoing for Tx DMA Handle.

Parameters

hdma	DMA handle.

Return values

None

Definition at line 3347 of file stm32l4xx_hal_spi.c.

{
  SPI_HandleTypeDef *hspi = (SPI_HandleTypeDef *)(((DMA_HandleTypeDef *)hdma)->Parent); /* Derogation MISRAC2012-Rule-11.5 */

  /* Disable SPI Peripheral */
  __HAL_SPI_DISABLE(hspi);

  hspi->hdmarx->XferAbortCallback = NULL;

  /* Disable Rx DMA Request */
  CLEAR_BIT(hspi->Instance->CR2, SPI_CR2_RXDMAEN);

  /* Control the BSY flag */
  if (SPI_WaitFlagStateUntilTimeout(hspi, SPI_FLAG_BSY, RESET, SPI_DEFAULT_TIMEOUT, HAL_GetTick()) != HAL_OK)
  {
    hspi->ErrorCode = HAL_SPI_ERROR_ABORT;
  }

  /* Empty the FRLVL fifo */
  if (SPI_WaitFifoStateUntilTimeout(hspi, SPI_FLAG_FRLVL, SPI_FRLVL_EMPTY, SPI_DEFAULT_TIMEOUT, HAL_GetTick()) != HAL_OK)
  {
    hspi->ErrorCode = HAL_SPI_ERROR_ABORT;
  }

  /* Check if an Abort process is still ongoing */
  if (hspi->hdmatx != NULL)
  {
    if (hspi->hdmatx->XferAbortCallback != NULL)
    {
      return;
    }
  }

  /* No Abort process still ongoing : All DMA Stream/Channel are aborted, call user Abort Complete callback */
  hspi->RxXferCount = 0U;
  hspi->TxXferCount = 0U;

  /* Check no error during Abort procedure */
  if (hspi->ErrorCode != HAL_SPI_ERROR_ABORT)
  {
    /* Reset errorCode */
    hspi->ErrorCode = HAL_SPI_ERROR_NONE;
  }

  /* Clear the Error flags in the SR register */
  __HAL_SPI_CLEAR_OVRFLAG(hspi);
  __HAL_SPI_CLEAR_FREFLAG(hspi);

  /* Restore hspi->State to Ready */
  hspi->State  = HAL_SPI_STATE_READY;

  /* Call user Abort complete callback */
#if (USE_HAL_SPI_REGISTER_CALLBACKS == 1U)
  hspi->AbortCpltCallback(hspi);
#else
  HAL_SPI_AbortCpltCallback(hspi);
#endif /* USE_HAL_SPI_REGISTER_CALLBACKS */
}

SPI_DMATransmitCplt()

static void SPI_DMATransmitCplt ( DMA_HandleTypeDef *  hdma )

static

DMA SPI transmit process complete callback.

Parameters

hdma	pointer to a DMA_HandleTypeDef structure that contains the configuration information for the specified DMA module.

Return values

None

Definition at line 2941 of file stm32l4xx_hal_spi.c.

{
  SPI_HandleTypeDef *hspi = (SPI_HandleTypeDef *)(((DMA_HandleTypeDef *)hdma)->Parent); /* Derogation MISRAC2012-Rule-11.5 */
  uint32_t tickstart;

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

  /* DMA Normal Mode */
  if ((hdma->Instance->CCR & DMA_CCR_CIRC) != DMA_CCR_CIRC)
  {
    /* Disable ERR interrupt */
    __HAL_SPI_DISABLE_IT(hspi, SPI_IT_ERR);

    /* Disable Tx DMA Request */
    CLEAR_BIT(hspi->Instance->CR2, SPI_CR2_TXDMAEN);

    /* Check the end of the transaction */
    if (SPI_EndRxTxTransaction(hspi, SPI_DEFAULT_TIMEOUT, tickstart) != HAL_OK)
    {
      SET_BIT(hspi->ErrorCode, HAL_SPI_ERROR_FLAG);
    }

    /* Clear overrun flag in 2 Lines communication mode because received data is not read */
    if (hspi->Init.Direction == SPI_DIRECTION_2LINES)
    {
      __HAL_SPI_CLEAR_OVRFLAG(hspi);
    }

    hspi->TxXferCount = 0U;
    hspi->State = HAL_SPI_STATE_READY;

    if (hspi->ErrorCode != HAL_SPI_ERROR_NONE)
    {
      /* Call user error callback */
#if (USE_HAL_SPI_REGISTER_CALLBACKS == 1U)
      hspi->ErrorCallback(hspi);
#else
      HAL_SPI_ErrorCallback(hspi);
#endif /* USE_HAL_SPI_REGISTER_CALLBACKS */
      return;
    }
  }
  /* Call user Tx complete callback */
#if (USE_HAL_SPI_REGISTER_CALLBACKS == 1U)
  hspi->TxCpltCallback(hspi);
#else
  HAL_SPI_TxCpltCallback(hspi);
#endif /* USE_HAL_SPI_REGISTER_CALLBACKS */
}

SPI_DMATransmitReceiveCplt()

static void SPI_DMATransmitReceiveCplt ( DMA_HandleTypeDef *  hdma )

static

DMA SPI transmit receive process complete callback.

Parameters

hdma	pointer to a DMA_HandleTypeDef structure that contains the configuration information for the specified DMA module.

Return values

None

Definition at line 3093 of file stm32l4xx_hal_spi.c.

{
  SPI_HandleTypeDef *hspi = (SPI_HandleTypeDef *)(((DMA_HandleTypeDef *)hdma)->Parent); /* Derogation MISRAC2012-Rule-11.5 */
  uint32_t tickstart;

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

  /* DMA Normal Mode */
  if ((hdma->Instance->CCR & DMA_CCR_CIRC) != DMA_CCR_CIRC)
  {
    /* Disable ERR interrupt */
    __HAL_SPI_DISABLE_IT(hspi, SPI_IT_ERR);

#if (USE_SPI_CRC != 0U)
    /* CRC handling */
    if (hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE)
    {
      if ((hspi->Init.DataSize == SPI_DATASIZE_8BIT) && (hspi->Init.CRCLength == SPI_CRC_LENGTH_8BIT))
      {
        if (SPI_WaitFifoStateUntilTimeout(hspi, SPI_FLAG_FRLVL, SPI_FRLVL_QUARTER_FULL, SPI_DEFAULT_TIMEOUT,
                                          tickstart) != HAL_OK)
        {
          /* Error on the CRC reception */
          SET_BIT(hspi->ErrorCode, HAL_SPI_ERROR_CRC);
        }
        /* Read CRC to Flush DR and RXNE flag */
        READ_REG(*(__IO uint8_t *)&hspi->Instance->DR);
      }
      else
      {
        if (SPI_WaitFifoStateUntilTimeout(hspi, SPI_FLAG_FRLVL, SPI_FRLVL_HALF_FULL, SPI_DEFAULT_TIMEOUT, tickstart) != HAL_OK)
        {
          /* Error on the CRC reception */
          SET_BIT(hspi->ErrorCode, HAL_SPI_ERROR_CRC);
        }
        /* Read CRC to Flush DR and RXNE flag */
        READ_REG(hspi->Instance->DR);
      }
    }
#endif /* USE_SPI_CRC */

    /* Check the end of the transaction */
    if (SPI_EndRxTxTransaction(hspi, SPI_DEFAULT_TIMEOUT, tickstart) != HAL_OK)
    {
      SET_BIT(hspi->ErrorCode, HAL_SPI_ERROR_FLAG);
    }

    /* Disable Rx/Tx DMA Request */
    CLEAR_BIT(hspi->Instance->CR2, SPI_CR2_TXDMAEN | SPI_CR2_RXDMAEN);

    hspi->TxXferCount = 0U;
    hspi->RxXferCount = 0U;
    hspi->State = HAL_SPI_STATE_READY;

#if (USE_SPI_CRC != 0U)
    /* Check if CRC error occurred */
    if (__HAL_SPI_GET_FLAG(hspi, SPI_FLAG_CRCERR))
    {
      SET_BIT(hspi->ErrorCode, HAL_SPI_ERROR_CRC);
      __HAL_SPI_CLEAR_CRCERRFLAG(hspi);
    }
#endif /* USE_SPI_CRC */

    if (hspi->ErrorCode != HAL_SPI_ERROR_NONE)
    {
      /* Call user error callback */
#if (USE_HAL_SPI_REGISTER_CALLBACKS == 1U)
      hspi->ErrorCallback(hspi);
#else
      HAL_SPI_ErrorCallback(hspi);
#endif /* USE_HAL_SPI_REGISTER_CALLBACKS */
      return;
    }
  }
  /* Call user TxRx complete callback */
#if (USE_HAL_SPI_REGISTER_CALLBACKS == 1U)
  hspi->TxRxCpltCallback(hspi);
#else
  HAL_SPI_TxRxCpltCallback(hspi);
#endif /* USE_HAL_SPI_REGISTER_CALLBACKS */
}

SPI_DMATxAbortCallback()

static void SPI_DMATxAbortCallback ( DMA_HandleTypeDef *  hdma )

static

DMA SPI Tx communication abort callback, when initiated by user (To be called at end of DMA Tx Abort procedure following user abort request).

Note

When this callback is executed, User Abort complete call back is called only if no Abort still ongoing for Rx DMA Handle.

Parameters

hdma	DMA handle.

Return values

None

Definition at line 3281 of file stm32l4xx_hal_spi.c.

{
  SPI_HandleTypeDef *hspi = (SPI_HandleTypeDef *)(((DMA_HandleTypeDef *)hdma)->Parent); /* Derogation MISRAC2012-Rule-11.5 */

  hspi->hdmatx->XferAbortCallback = NULL;

  /* Disable Tx DMA Request */
  CLEAR_BIT(hspi->Instance->CR2, SPI_CR2_TXDMAEN);

  if (SPI_EndRxTxTransaction(hspi, SPI_DEFAULT_TIMEOUT, HAL_GetTick()) != HAL_OK)
  {
    hspi->ErrorCode = HAL_SPI_ERROR_ABORT;
  }

  /* Disable SPI Peripheral */
  __HAL_SPI_DISABLE(hspi);

  /* Empty the FRLVL fifo */
  if (SPI_WaitFifoStateUntilTimeout(hspi, SPI_FLAG_FRLVL, SPI_FRLVL_EMPTY, SPI_DEFAULT_TIMEOUT, HAL_GetTick()) != HAL_OK)
  {
    hspi->ErrorCode = HAL_SPI_ERROR_ABORT;
  }

  /* Check if an Abort process is still ongoing */
  if (hspi->hdmarx != NULL)
  {
    if (hspi->hdmarx->XferAbortCallback != NULL)
    {
      return;
    }
  }

  /* No Abort process still ongoing : All DMA Stream/Channel are aborted, call user Abort Complete callback */
  hspi->RxXferCount = 0U;
  hspi->TxXferCount = 0U;

  /* Check no error during Abort procedure */
  if (hspi->ErrorCode != HAL_SPI_ERROR_ABORT)
  {
    /* Reset errorCode */
    hspi->ErrorCode = HAL_SPI_ERROR_NONE;
  }

  /* Clear the Error flags in the SR register */
  __HAL_SPI_CLEAR_OVRFLAG(hspi);
  __HAL_SPI_CLEAR_FREFLAG(hspi);

  /* Restore hspi->State to Ready */
  hspi->State  = HAL_SPI_STATE_READY;

  /* Call user Abort complete callback */
#if (USE_HAL_SPI_REGISTER_CALLBACKS == 1U)
  hspi->AbortCpltCallback(hspi);
#else
  HAL_SPI_AbortCpltCallback(hspi);
#endif /* USE_HAL_SPI_REGISTER_CALLBACKS */
}

SPI_EndRxTransaction()

static HAL_StatusTypeDef SPI_EndRxTransaction ( SPI_HandleTypeDef *  hspi, uint32_t  Timeout, uint32_t  Tickstart  )

static

Handle the check of the RX transaction complete.

Parameters

hspi	pointer to a SPI_HandleTypeDef structure that contains the configuration information for SPI module.
Timeout	Timeout duration
Tickstart	tick start value

Return values

HAL

status

Definition at line 3895 of file stm32l4xx_hal_spi.c.

{
  if ((hspi->Init.Mode == SPI_MODE_MASTER) && ((hspi->Init.Direction == SPI_DIRECTION_1LINE)
                                               || (hspi->Init.Direction == SPI_DIRECTION_2LINES_RXONLY)))
  {
    /* Disable SPI peripheral */
    __HAL_SPI_DISABLE(hspi);
  }

  /* Control the BSY flag */
  if (SPI_WaitFlagStateUntilTimeout(hspi, SPI_FLAG_BSY, RESET, Timeout, Tickstart) != HAL_OK)
  {
    SET_BIT(hspi->ErrorCode, HAL_SPI_ERROR_FLAG);
    return HAL_TIMEOUT;
  }

  if ((hspi->Init.Mode == SPI_MODE_MASTER) && ((hspi->Init.Direction == SPI_DIRECTION_1LINE)
                                               || (hspi->Init.Direction == SPI_DIRECTION_2LINES_RXONLY)))
  {
    /* Empty the FRLVL fifo */
    if (SPI_WaitFifoStateUntilTimeout(hspi, SPI_FLAG_FRLVL, SPI_FRLVL_EMPTY, Timeout, Tickstart) != HAL_OK)
    {
      SET_BIT(hspi->ErrorCode, HAL_SPI_ERROR_FLAG);
      return HAL_TIMEOUT;
    }
  }
  return HAL_OK;
}

SPI_EndRxTxTransaction()

static HAL_StatusTypeDef SPI_EndRxTxTransaction ( SPI_HandleTypeDef *  hspi, uint32_t  Timeout, uint32_t  Tickstart  )

static

Handle the check of the RXTX or TX transaction complete.

Parameters

hspi	SPI handle
Timeout	Timeout duration
Tickstart	tick start value

Return values

HAL

status

Definition at line 3931 of file stm32l4xx_hal_spi.c.

{
  /* Control if the TX fifo is empty */
  if (SPI_WaitFifoStateUntilTimeout(hspi, SPI_FLAG_FTLVL, SPI_FTLVL_EMPTY, Timeout, Tickstart) != HAL_OK)
  {
    SET_BIT(hspi->ErrorCode, HAL_SPI_ERROR_FLAG);
    return HAL_TIMEOUT;
  }

  /* Control the BSY flag */
  if (SPI_WaitFlagStateUntilTimeout(hspi, SPI_FLAG_BSY, RESET, Timeout, Tickstart) != HAL_OK)
  {
    SET_BIT(hspi->ErrorCode, HAL_SPI_ERROR_FLAG);
    return HAL_TIMEOUT;
  }

  /* Control if the RX fifo is empty */
  if (SPI_WaitFifoStateUntilTimeout(hspi, SPI_FLAG_FRLVL, SPI_FRLVL_EMPTY, Timeout, Tickstart) != HAL_OK)
  {
    SET_BIT(hspi->ErrorCode, HAL_SPI_ERROR_FLAG);
    return HAL_TIMEOUT;
  }

  return HAL_OK;
}

SPI_RxISR_16BIT()

static void SPI_RxISR_16BIT ( struct __SPI_HandleTypeDef *  hspi )

static

Manage the 16-bit receive in Interrupt context.

Parameters

hspi	pointer to a SPI_HandleTypeDef structure that contains the configuration information for SPI module.

Return values

None

Definition at line 3699 of file stm32l4xx_hal_spi.c.

{
  *((uint16_t *)hspi->pRxBuffPtr) = (uint16_t)(hspi->Instance->DR);
  hspi->pRxBuffPtr += sizeof(uint16_t);
  hspi->RxXferCount--;

#if (USE_SPI_CRC != 0U)
  /* Enable CRC Transmission */
  if ((hspi->RxXferCount == 1U) && (hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE))
  {
    SET_BIT(hspi->Instance->CR1, SPI_CR1_CRCNEXT);
  }
#endif /* USE_SPI_CRC */

  if (hspi->RxXferCount == 0U)
  {
#if (USE_SPI_CRC != 0U)
    if (hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE)
    {
      hspi->RxISR = SPI_RxISR_16BITCRC;
      return;
    }
#endif /* USE_SPI_CRC */
    SPI_CloseRx_ISR(hspi);
  }
}

SPI_RxISR_16BITCRC()

static void SPI_RxISR_16BITCRC ( struct __SPI_HandleTypeDef *  hspi )

static

Manage the CRC 16-bit receive in Interrupt context.

Parameters

hspi	pointer to a SPI_HandleTypeDef structure that contains the configuration information for SPI module.

Return values

None

Definition at line 3681 of file stm32l4xx_hal_spi.c.

{
  /* Read 16bit CRC to flush Data Register */
  READ_REG(hspi->Instance->DR);

  /* Disable RXNE and ERR interrupt */
  __HAL_SPI_DISABLE_IT(hspi, (SPI_IT_RXNE | SPI_IT_ERR));

  SPI_CloseRx_ISR(hspi);
}

SPI_RxISR_8BIT()

static void SPI_RxISR_8BIT ( struct __SPI_HandleTypeDef *  hspi )

static

Manage the receive 8-bit in Interrupt context.

Parameters

hspi	pointer to a SPI_HandleTypeDef structure that contains the configuration information for SPI module.

Return values

None

Definition at line 3647 of file stm32l4xx_hal_spi.c.

{
  *hspi->pRxBuffPtr = (*(__IO uint8_t *)&hspi->Instance->DR);
  hspi->pRxBuffPtr++;
  hspi->RxXferCount--;

#if (USE_SPI_CRC != 0U)
  /* Enable CRC Transmission */
  if ((hspi->RxXferCount == 1U) && (hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE))
  {
    SET_BIT(hspi->Instance->CR1, SPI_CR1_CRCNEXT);
  }
#endif /* USE_SPI_CRC */

  if (hspi->RxXferCount == 0U)
  {
#if (USE_SPI_CRC != 0U)
    if (hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE)
    {
      hspi->RxISR =  SPI_RxISR_8BITCRC;
      return;
    }
#endif /* USE_SPI_CRC */
    SPI_CloseRx_ISR(hspi);
  }
}

SPI_RxISR_8BITCRC()

static void SPI_RxISR_8BITCRC ( struct __SPI_HandleTypeDef *  hspi )

static

Manage the CRC 8-bit receive in Interrupt context.

Parameters

hspi	pointer to a SPI_HandleTypeDef structure that contains the configuration information for SPI module.

Return values

None

Definition at line 3627 of file stm32l4xx_hal_spi.c.

{
  /* Read 8bit CRC to flush Data Register */
  READ_REG(*(__IO uint8_t *)&hspi->Instance->DR);

  hspi->CRCSize--;

  if (hspi->CRCSize == 0U)
  {
    SPI_CloseRx_ISR(hspi);
  }
}

SPI_TxISR_16BIT()

static void SPI_TxISR_16BIT ( struct __SPI_HandleTypeDef *  hspi )

static

Handle the data 16-bit transmit in Interrupt mode.

Parameters

hspi	pointer to a SPI_HandleTypeDef structure that contains the configuration information for SPI module.

Return values

None

Definition at line 3757 of file stm32l4xx_hal_spi.c.

{
  /* Transmit data in 16 Bit mode */
  hspi->Instance->DR = *((uint16_t *)hspi->pTxBuffPtr);
  hspi->pTxBuffPtr += sizeof(uint16_t);
  hspi->TxXferCount--;

  if (hspi->TxXferCount == 0U)
  {
#if (USE_SPI_CRC != 0U)
    if (hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE)
    {
      /* Enable CRC Transmission */
      SET_BIT(hspi->Instance->CR1, SPI_CR1_CRCNEXT);
    }
#endif /* USE_SPI_CRC */
    SPI_CloseTx_ISR(hspi);
  }
}

SPI_TxISR_8BIT()

static void SPI_TxISR_8BIT ( struct __SPI_HandleTypeDef *  hspi )

static

Handle the data 8-bit transmit in Interrupt mode.

Parameters

hspi	pointer to a SPI_HandleTypeDef structure that contains the configuration information for SPI module.

Return values

None

Definition at line 3732 of file stm32l4xx_hal_spi.c.

{
  *(__IO uint8_t *)&hspi->Instance->DR = (*hspi->pTxBuffPtr);
  hspi->pTxBuffPtr++;
  hspi->TxXferCount--;

  if (hspi->TxXferCount == 0U)
  {
#if (USE_SPI_CRC != 0U)
    if (hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE)
    {
      /* Enable CRC Transmission */
      SET_BIT(hspi->Instance->CR1, SPI_CR1_CRCNEXT);
    }
#endif /* USE_SPI_CRC */
    SPI_CloseTx_ISR(hspi);
  }
}

SPI_WaitFifoStateUntilTimeout()

static HAL_StatusTypeDef SPI_WaitFifoStateUntilTimeout ( SPI_HandleTypeDef *  hspi, uint32_t  Fifo, uint32_t  State, uint32_t  Timeout, uint32_t  Tickstart  )

static

Handle SPI FIFO Communication Timeout.

Parameters

hspi	pointer to a SPI_HandleTypeDef structure that contains the configuration information for SPI module.
Fifo	Fifo to check
State	Fifo state to check
Timeout	Timeout duration
Tickstart	tick start value

Return values

HAL

status

Definition at line 3839 of file stm32l4xx_hal_spi.c.

{
  while ((hspi->Instance->SR & Fifo) != State)
  {
    if ((Fifo == SPI_SR_FRLVL) && (State == SPI_FRLVL_EMPTY))
    {
      /* Read 8bit CRC to flush Data Register */
      READ_REG(*((__IO uint8_t *)&hspi->Instance->DR));
    }

    if (Timeout != HAL_MAX_DELAY)
    {
      if (((HAL_GetTick() - Tickstart) >= Timeout) || (Timeout == 0U))
      {
        /* Disable the SPI and reset the CRC: the CRC value should be cleared
           on both master and slave sides in order to resynchronize the master
           and slave for their respective CRC calculation */

        /* Disable TXE, RXNE and ERR interrupts for the interrupt process */
        __HAL_SPI_DISABLE_IT(hspi, (SPI_IT_TXE | SPI_IT_RXNE | SPI_IT_ERR));

        if ((hspi->Init.Mode == SPI_MODE_MASTER) && ((hspi->Init.Direction == SPI_DIRECTION_1LINE)
                                                     || (hspi->Init.Direction == SPI_DIRECTION_2LINES_RXONLY)))
        {
          /* Disable SPI peripheral */
          __HAL_SPI_DISABLE(hspi);
        }

        /* Reset CRC Calculation */
        if (hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE)
        {
          SPI_RESET_CRC(hspi);
        }

        hspi->State = HAL_SPI_STATE_READY;

        /* Process Unlocked */
        __HAL_UNLOCK(hspi);

        return HAL_TIMEOUT;
      }
    }
  }

  return HAL_OK;
}

SPI_WaitFlagStateUntilTimeout()

static HAL_StatusTypeDef SPI_WaitFlagStateUntilTimeout ( SPI_HandleTypeDef *  hspi, uint32_t  Flag, FlagStatus  State, uint32_t  Timeout, uint32_t  Tickstart  )

static

Handle SPI Communication Timeout.

Parameters

hspi	pointer to a SPI_HandleTypeDef structure that contains the configuration information for SPI module.
Flag	SPI flag to check
State	flag state to check
Timeout	Timeout duration
Tickstart	tick start value

Return values

HAL

status

Definition at line 3787 of file stm32l4xx_hal_spi.c.

{
  while ((__HAL_SPI_GET_FLAG(hspi, Flag) ? SET : RESET) != State)
  {
    if (Timeout != HAL_MAX_DELAY)
    {
      if (((HAL_GetTick() - Tickstart) >= Timeout) || (Timeout == 0U))
      {
        /* Disable the SPI and reset the CRC: the CRC value should be cleared
        on both master and slave sides in order to resynchronize the master
        and slave for their respective CRC calculation */

        /* Disable TXE, RXNE and ERR interrupts for the interrupt process */
        __HAL_SPI_DISABLE_IT(hspi, (SPI_IT_TXE | SPI_IT_RXNE | SPI_IT_ERR));

        if ((hspi->Init.Mode == SPI_MODE_MASTER) && ((hspi->Init.Direction == SPI_DIRECTION_1LINE)
                                                     || (hspi->Init.Direction == SPI_DIRECTION_2LINES_RXONLY)))
        {
          /* Disable SPI peripheral */
          __HAL_SPI_DISABLE(hspi);
        }

        /* Reset CRC Calculation */
        if (hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE)
        {
          SPI_RESET_CRC(hspi);
        }

        hspi->State = HAL_SPI_STATE_READY;

        /* Process Unlocked */
        __HAL_UNLOCK(hspi);

        return HAL_TIMEOUT;
      }
    }
  }

  return HAL_OK;
}