stm32l4xx_hal_dma_ex.c

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/* Includes ------------------------------------------------------------------*/
#include "stm32l4xx_hal.h"

#if defined(DMAMUX1)

#ifdef HAL_DMA_MODULE_ENABLED

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private Constants ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/


HAL_StatusTypeDef HAL_DMAEx_ConfigMuxSync(DMA_HandleTypeDef *hdma, HAL_DMA_MuxSyncConfigTypeDef *pSyncConfig)
{
  /* Check the parameters */
  assert_param(IS_DMA_ALL_INSTANCE(hdma->Instance));

  assert_param(IS_DMAMUX_SYNC_SIGNAL_ID(pSyncConfig->SyncSignalID));

  assert_param(IS_DMAMUX_SYNC_POLARITY(pSyncConfig-> SyncPolarity));
  assert_param(IS_DMAMUX_SYNC_STATE(pSyncConfig->SyncEnable));
  assert_param(IS_DMAMUX_SYNC_EVENT(pSyncConfig->EventEnable));
  assert_param(IS_DMAMUX_SYNC_REQUEST_NUMBER(pSyncConfig->RequestNumber));

  /*Check if the DMA state is ready */
  if(hdma->State == HAL_DMA_STATE_READY)
  {
    /* Process Locked */
    __HAL_LOCK(hdma);

    /* Set the new synchronization parameters (and keep the request ID filled during the Init)*/
    MODIFY_REG( hdma->DMAmuxChannel->CCR, \
               (~DMAMUX_CxCR_DMAREQ_ID) , \
               ((pSyncConfig->SyncSignalID) << DMAMUX_CxCR_SYNC_ID_Pos) | ((pSyncConfig->RequestNumber - 1U) << DMAMUX_CxCR_NBREQ_Pos) | \
               pSyncConfig->SyncPolarity | ((uint32_t)pSyncConfig->SyncEnable << DMAMUX_CxCR_SE_Pos) | \
                 ((uint32_t)pSyncConfig->EventEnable << DMAMUX_CxCR_EGE_Pos));

    /* Process UnLocked */
    __HAL_UNLOCK(hdma);

    return HAL_OK;
  }
  else
  {
    /*DMA State not Ready*/
    return HAL_ERROR;
  }
}

HAL_StatusTypeDef HAL_DMAEx_ConfigMuxRequestGenerator (DMA_HandleTypeDef *hdma, HAL_DMA_MuxRequestGeneratorConfigTypeDef *pRequestGeneratorConfig)
{
  /* Check the parameters */
  assert_param(IS_DMA_ALL_INSTANCE(hdma->Instance));

  assert_param(IS_DMAMUX_REQUEST_GEN_SIGNAL_ID(pRequestGeneratorConfig->SignalID));

  assert_param(IS_DMAMUX_REQUEST_GEN_POLARITY(pRequestGeneratorConfig->Polarity));
  assert_param(IS_DMAMUX_REQUEST_GEN_REQUEST_NUMBER(pRequestGeneratorConfig->RequestNumber));

  /* check if the DMA state is ready
     and DMA is using a DMAMUX request generator block
  */
  if((hdma->State == HAL_DMA_STATE_READY) && (hdma->DMAmuxRequestGen != 0U))
  {
    /* Process Locked */
    __HAL_LOCK(hdma);

    /* Set the request generator new parameters */
    hdma->DMAmuxRequestGen->RGCR = pRequestGeneratorConfig->SignalID | \
                                  ((pRequestGeneratorConfig->RequestNumber - 1U) << DMAMUX_RGxCR_GNBREQ_Pos)| \
                                  pRequestGeneratorConfig->Polarity;
   /* Process UnLocked */
   __HAL_UNLOCK(hdma);

   return HAL_OK;
 }
 else
 {
   return HAL_ERROR;
 }
}

HAL_StatusTypeDef HAL_DMAEx_EnableMuxRequestGenerator (DMA_HandleTypeDef *hdma)
{
  /* Check the parameters */
  assert_param(IS_DMA_ALL_INSTANCE(hdma->Instance));

  /* check if the DMA state is ready
     and DMA is using a DMAMUX request generator block
  */
  if((hdma->State != HAL_DMA_STATE_RESET) && (hdma->DMAmuxRequestGen != 0))
  {

    /* Enable the request generator*/
    hdma->DMAmuxRequestGen->RGCR |= DMAMUX_RGxCR_GE;

   return HAL_OK;
 }
 else
 {
   return HAL_ERROR;
 }
}

HAL_StatusTypeDef HAL_DMAEx_DisableMuxRequestGenerator (DMA_HandleTypeDef *hdma)
{
  /* Check the parameters */
  assert_param(IS_DMA_ALL_INSTANCE(hdma->Instance));

  /* check if the DMA state is ready
     and DMA is using a DMAMUX request generator block
  */
  if((hdma->State != HAL_DMA_STATE_RESET) && (hdma->DMAmuxRequestGen != 0))
  {

    /* Disable the request generator*/
    hdma->DMAmuxRequestGen->RGCR &= ~DMAMUX_RGxCR_GE;

    return HAL_OK;
  }
  else
  {
    return HAL_ERROR;
  }
}

void HAL_DMAEx_MUX_IRQHandler(DMA_HandleTypeDef *hdma)
{
  /* Check for DMAMUX Synchronization overrun */
  if((hdma->DMAmuxChannelStatus->CSR & hdma->DMAmuxChannelStatusMask) != 0U)
  {
    /* Disable the synchro overrun interrupt */
    hdma->DMAmuxChannel->CCR &= ~DMAMUX_CxCR_SOIE;

    /* Clear the DMAMUX synchro overrun flag */
    hdma->DMAmuxChannelStatus->CFR = hdma->DMAmuxChannelStatusMask;

    /* Update error code */
    hdma->ErrorCode |= HAL_DMA_ERROR_SYNC;

    if(hdma->XferErrorCallback != NULL)
    {
      /* Transfer error callback */
      hdma->XferErrorCallback(hdma);
    }
  }

  if(hdma->DMAmuxRequestGen != 0)
  {
   /* if using a DMAMUX request generator block Check for DMAMUX request generator overrun */
    if((hdma->DMAmuxRequestGenStatus->RGSR & hdma->DMAmuxRequestGenStatusMask) != 0U)
    {
      /* Disable the request gen overrun interrupt */
      hdma->DMAmuxRequestGen->RGCR &= ~DMAMUX_RGxCR_OIE;

      /* Clear the DMAMUX request generator overrun flag */
      hdma->DMAmuxRequestGenStatus->RGCFR = hdma->DMAmuxRequestGenStatusMask;

      /* Update error code */
      hdma->ErrorCode |= HAL_DMA_ERROR_REQGEN;

      if(hdma->XferErrorCallback != NULL)
      {
        /* Transfer error callback */
        hdma->XferErrorCallback(hdma);
      }
    }
  }
}

#endif /* HAL_DMA_MODULE_ENABLED */

#endif /* DMAMUX1 */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/