HAL_StatusTypeDef HAL_TIM_DMABurst_MultiReadStart()

in CMake-armcc/Drivers/STM32L4xx_HAL_Driver/Src/stm32l4xx_hal_tim.c [4834:5004]

• 120 lines of code
• 19 McCabe index (conditional complexity)

HAL_StatusTypeDef HAL_TIM_DMABurst_MultiReadStart(TIM_HandleTypeDef *htim, uint32_t BurstBaseAddress,
                                                  uint32_t BurstRequestSrc, uint32_t  *BurstBuffer,
                                                  uint32_t  BurstLength, uint32_t  DataLength)
{
  /* Check the parameters */
  assert_param(IS_TIM_DMABURST_INSTANCE(htim->Instance));
  assert_param(IS_TIM_DMA_BASE(BurstBaseAddress));
  assert_param(IS_TIM_DMA_SOURCE(BurstRequestSrc));
  assert_param(IS_TIM_DMA_LENGTH(BurstLength));
  assert_param(IS_TIM_DMA_DATA_LENGTH(DataLength));

  if (htim->DMABurstState == HAL_DMA_BURST_STATE_BUSY)
  {
    return HAL_BUSY;
  }
  else if (htim->DMABurstState == HAL_DMA_BURST_STATE_READY)
  {
    if ((BurstBuffer == NULL) && (BurstLength > 0U))
    {
      return HAL_ERROR;
    }
    else
    {
      htim->DMABurstState = HAL_DMA_BURST_STATE_BUSY;
    }
  }
  else
  {
    /* nothing to do */
  }
  switch (BurstRequestSrc)
  {
    case TIM_DMA_UPDATE:
    {
      /* Set the DMA Period elapsed callbacks */
      htim->hdma[TIM_DMA_ID_UPDATE]->XferCpltCallback = TIM_DMAPeriodElapsedCplt;
      htim->hdma[TIM_DMA_ID_UPDATE]->XferHalfCpltCallback = TIM_DMAPeriodElapsedHalfCplt;

      /* Set the DMA error callback */
      htim->hdma[TIM_DMA_ID_UPDATE]->XferErrorCallback = TIM_DMAError ;

      /* Enable the DMA channel */
      if (HAL_DMA_Start_IT(htim->hdma[TIM_DMA_ID_UPDATE], (uint32_t)&htim->Instance->DMAR, (uint32_t)BurstBuffer,
                         DataLength) != HAL_OK)
      {
        /* Return error status */
        return HAL_ERROR;
      }
      break;
    }
    case TIM_DMA_CC1:
    {
      /* Set the DMA capture callbacks */
      htim->hdma[TIM_DMA_ID_CC1]->XferCpltCallback = TIM_DMACaptureCplt;
      htim->hdma[TIM_DMA_ID_CC1]->XferHalfCpltCallback = TIM_DMACaptureHalfCplt;

      /* Set the DMA error callback */
      htim->hdma[TIM_DMA_ID_CC1]->XferErrorCallback = TIM_DMAError ;

      /* Enable the DMA channel */
      if (HAL_DMA_Start_IT(htim->hdma[TIM_DMA_ID_CC1], (uint32_t)&htim->Instance->DMAR, (uint32_t)BurstBuffer,
                         DataLength) != HAL_OK)
      {
        /* Return error status */
        return HAL_ERROR;
      }
      break;
    }
    case TIM_DMA_CC2:
    {
      /* Set the DMA capture callbacks */
      htim->hdma[TIM_DMA_ID_CC2]->XferCpltCallback = TIM_DMACaptureCplt;
      htim->hdma[TIM_DMA_ID_CC2]->XferHalfCpltCallback = TIM_DMACaptureHalfCplt;

      /* Set the DMA error callback */
      htim->hdma[TIM_DMA_ID_CC2]->XferErrorCallback = TIM_DMAError ;

      /* Enable the DMA channel */
      if (HAL_DMA_Start_IT(htim->hdma[TIM_DMA_ID_CC2], (uint32_t)&htim->Instance->DMAR, (uint32_t)BurstBuffer,
                         DataLength) != HAL_OK)
      {
        /* Return error status */
        return HAL_ERROR;
      }
      break;
    }
    case TIM_DMA_CC3:
    {
      /* Set the DMA capture callbacks */
      htim->hdma[TIM_DMA_ID_CC3]->XferCpltCallback = TIM_DMACaptureCplt;
      htim->hdma[TIM_DMA_ID_CC3]->XferHalfCpltCallback = TIM_DMACaptureHalfCplt;

      /* Set the DMA error callback */
      htim->hdma[TIM_DMA_ID_CC3]->XferErrorCallback = TIM_DMAError ;

      /* Enable the DMA channel */
      if (HAL_DMA_Start_IT(htim->hdma[TIM_DMA_ID_CC3], (uint32_t)&htim->Instance->DMAR, (uint32_t)BurstBuffer,
                         DataLength) != HAL_OK)
      {
        /* Return error status */
        return HAL_ERROR;
      }
      break;
    }
    case TIM_DMA_CC4:
    {
      /* Set the DMA capture callbacks */
      htim->hdma[TIM_DMA_ID_CC4]->XferCpltCallback = TIM_DMACaptureCplt;
      htim->hdma[TIM_DMA_ID_CC4]->XferHalfCpltCallback = TIM_DMACaptureHalfCplt;

      /* Set the DMA error callback */
      htim->hdma[TIM_DMA_ID_CC4]->XferErrorCallback = TIM_DMAError ;

      /* Enable the DMA channel */
      if (HAL_DMA_Start_IT(htim->hdma[TIM_DMA_ID_CC4], (uint32_t)&htim->Instance->DMAR, (uint32_t)BurstBuffer,
                         DataLength) != HAL_OK)
      {
        /* Return error status */
        return HAL_ERROR;
      }
      break;
    }
    case TIM_DMA_COM:
    {
      /* Set the DMA commutation callbacks */
      htim->hdma[TIM_DMA_ID_COMMUTATION]->XferCpltCallback =  TIMEx_DMACommutationCplt;
      htim->hdma[TIM_DMA_ID_COMMUTATION]->XferHalfCpltCallback =  TIMEx_DMACommutationHalfCplt;

      /* Set the DMA error callback */
      htim->hdma[TIM_DMA_ID_COMMUTATION]->XferErrorCallback = TIM_DMAError ;

      /* Enable the DMA channel */
      if (HAL_DMA_Start_IT(htim->hdma[TIM_DMA_ID_COMMUTATION], (uint32_t)&htim->Instance->DMAR, (uint32_t)BurstBuffer,
                         DataLength) != HAL_OK)
      {
        /* Return error status */
        return HAL_ERROR;
      }
      break;
    }
    case TIM_DMA_TRIGGER:
    {
      /* Set the DMA trigger callbacks */
      htim->hdma[TIM_DMA_ID_TRIGGER]->XferCpltCallback = TIM_DMATriggerCplt;
      htim->hdma[TIM_DMA_ID_TRIGGER]->XferHalfCpltCallback = TIM_DMATriggerHalfCplt;

      /* Set the DMA error callback */
      htim->hdma[TIM_DMA_ID_TRIGGER]->XferErrorCallback = TIM_DMAError ;

      /* Enable the DMA channel */
      if (HAL_DMA_Start_IT(htim->hdma[TIM_DMA_ID_TRIGGER], (uint32_t)&htim->Instance->DMAR, (uint32_t)BurstBuffer,
                         DataLength) != HAL_OK)
      {
        /* Return error status */
        return HAL_ERROR;
      }
      break;
    }
    default:
      break;
  }

  /* Configure the DMA Burst Mode */
  htim->Instance->DCR = (BurstBaseAddress | BurstLength);

  /* Enable the TIM DMA Request */
  __HAL_TIM_ENABLE_DMA(htim, BurstRequestSrc);

  /* Return function status */
  return HAL_OK;
}