HAL_StatusTypeDef HAL_SPI_Abort_IT()

in boards/STM32L475_Discovery/STM32L4xx_HAL_Driver/stm32l4xx_hal_spi.c [2071:2253]

• 137 lines of code
• 25 McCabe index (conditional complexity)

HAL_StatusTypeDef HAL_SPI_Abort_IT(SPI_HandleTypeDef *hspi)
{
  HAL_StatusTypeDef errorcode;
  uint32_t abortcplt ;
  __IO uint32_t count, resetcount;

  /* Initialized local variable  */
  errorcode = HAL_OK;
  abortcplt = 1U;
  resetcount = SPI_DEFAULT_TIMEOUT * (SystemCoreClock / 24U / 1000U);
  count = resetcount;

  /* Change Rx and Tx Irq Handler to Disable TXEIE, RXNEIE and ERRIE interrupts */
  if (HAL_IS_BIT_SET(hspi->Instance->CR2, SPI_CR2_TXEIE))
  {
    hspi->TxISR = SPI_AbortTx_ISR;
    /* Wait HAL_SPI_STATE_ABORT state */
    do
    {
      if (count-- == 0U)
      {
        SET_BIT(hspi->ErrorCode, HAL_SPI_ERROR_ABORT);
        break;
      }
    }
    while (hspi->State != HAL_SPI_STATE_ABORT);
    /* Reset Timeout Counter */
    count = resetcount;
  }

  if (HAL_IS_BIT_SET(hspi->Instance->CR2, SPI_CR2_RXNEIE))
  {
    hspi->RxISR = SPI_AbortRx_ISR;
    /* Wait HAL_SPI_STATE_ABORT state */
    do
    {
      if (count-- == 0U)
      {
        SET_BIT(hspi->ErrorCode, HAL_SPI_ERROR_ABORT);
        break;
      }
    }
    while (hspi->State != HAL_SPI_STATE_ABORT);
    /* Reset Timeout Counter */
    count = resetcount;
  }

  /* Clear ERRIE interrupts in case of DMA Mode */
  CLEAR_BIT(hspi->Instance->CR2, SPI_CR2_ERRIE);

  /* If DMA Tx and/or DMA Rx Handles are associated to SPI Handle, DMA Abort complete callbacks should be initialised
     before any call to DMA Abort functions */
  /* DMA Tx Handle is valid */
  if (hspi->hdmatx != NULL)
  {
    /* Set DMA Abort Complete callback if UART DMA Tx request if enabled.
       Otherwise, set it to NULL */
    if (HAL_IS_BIT_SET(hspi->Instance->CR2, SPI_CR2_TXDMAEN))
    {
      hspi->hdmatx->XferAbortCallback = SPI_DMATxAbortCallback;
    }
    else
    {
      hspi->hdmatx->XferAbortCallback = NULL;
    }
  }
  /* DMA Rx Handle is valid */
  if (hspi->hdmarx != NULL)
  {
    /* Set DMA Abort Complete callback if UART DMA Rx request if enabled.
       Otherwise, set it to NULL */
    if (HAL_IS_BIT_SET(hspi->Instance->CR2, SPI_CR2_RXDMAEN))
    {
      hspi->hdmarx->XferAbortCallback = SPI_DMARxAbortCallback;
    }
    else
    {
      hspi->hdmarx->XferAbortCallback = NULL;
    }
  }

  /* Disable the SPI DMA Tx or the SPI Rx request if enabled */
  if ((HAL_IS_BIT_SET(hspi->Instance->CR2, SPI_CR2_TXDMAEN)) && (HAL_IS_BIT_SET(hspi->Instance->CR2, SPI_CR2_RXDMAEN)))
  {
    /* Abort the SPI DMA Tx Stream/Channel */
    if (hspi->hdmatx != NULL)
    {
      /* Abort DMA Tx Handle linked to SPI Peripheral */
      if (HAL_DMA_Abort_IT(hspi->hdmatx) != HAL_OK)
      {
        hspi->hdmatx->XferAbortCallback = NULL;
        hspi->ErrorCode = HAL_SPI_ERROR_ABORT;
      }
      else
      {
        abortcplt = 0U;
      }
    }
    /* Abort the SPI DMA Rx Stream/Channel */
    if (hspi->hdmarx != NULL)
    {
      /* Abort DMA Rx Handle linked to SPI Peripheral */
      if (HAL_DMA_Abort_IT(hspi->hdmarx) !=  HAL_OK)
      {
        hspi->hdmarx->XferAbortCallback = NULL;
        hspi->ErrorCode = HAL_SPI_ERROR_ABORT;
        abortcplt = 1U;
      }
      else
      {
        abortcplt = 0U;
      }
    }
  }

  /* Disable the SPI DMA Tx or the SPI Rx request if enabled */
  if (HAL_IS_BIT_SET(hspi->Instance->CR2, SPI_CR2_TXDMAEN))
  {
    /* Abort the SPI DMA Tx Stream/Channel */
    if (hspi->hdmatx != NULL)
    {
      /* Abort DMA Tx Handle linked to SPI Peripheral */
      if (HAL_DMA_Abort_IT(hspi->hdmatx) != HAL_OK)
      {
        hspi->hdmatx->XferAbortCallback = NULL;
        hspi->ErrorCode = HAL_SPI_ERROR_ABORT;
      }
      else
      {
        abortcplt = 0U;
      }
    }
  }
  /* Disable the SPI DMA Tx or the SPI Rx request if enabled */
  if (HAL_IS_BIT_SET(hspi->Instance->CR2, SPI_CR2_RXDMAEN))
  {
    /* Abort the SPI DMA Rx Stream/Channel */
    if (hspi->hdmarx != NULL)
    {
      /* Abort DMA Rx Handle linked to SPI Peripheral */
      if (HAL_DMA_Abort_IT(hspi->hdmarx) !=  HAL_OK)
      {
        hspi->hdmarx->XferAbortCallback = NULL;
        hspi->ErrorCode = HAL_SPI_ERROR_ABORT;
      }
      else
      {
        abortcplt = 0U;
      }
    }
  }

  if (abortcplt == 1U)
  {
    /* Reset Tx and Rx transfer counters */
    hspi->RxXferCount = 0U;
    hspi->TxXferCount = 0U;

    /* Check error during Abort procedure */
    if (hspi->ErrorCode == HAL_SPI_ERROR_ABORT)
    {
      /* return HAL_Error in case of error during Abort procedure */
      errorcode = HAL_ERROR;
    }
    else
    {
      /* 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;

    /* As no DMA to be aborted, call directly user Abort complete callback */
    HAL_SPI_AbortCpltCallback(hspi);
  }

  return errorcode;
}