/**
* @brief Disables DAC and stop conversion of channel.
* @param hdac: pointer to a DAC_HandleTypeDef structure that contains
* the configuration information for the specified DAC.
* @param Channel: The selected DAC channel.
* This parameter can be one of the following values:
* @arg DAC_CHANNEL_1: DAC Channel1 selected
* @arg DAC_CHANNEL_2: DAC Channel2 selected
* @retval HAL status
*/
HAL_StatusTypeDef HAL_DAC_Stop_DMA(DAC_HandleTypeDef* hdac, uint32_t Channel)
{
HAL_StatusTypeDef status = HAL_OK;
/* Check the parameters */
assert_param(IS_DAC_CHANNEL(Channel));
/* Disable the selected DAC channel DMA request */
hdac->Instance->CR &= ~(DAC_CR_DMAEN1 << Channel);
/* Disable the Peripheral */
__HAL_DAC_DISABLE(hdac, Channel);
/* Disable the DMA channel */
#if defined (STM32L431xx) || defined (STM32L432xx) || defined (STM32L433xx) || defined (STM32L442xx) || defined (STM32L443xx) || \
defined (STM32L471xx) || defined (STM32L475xx) || defined (STM32L476xx) || defined (STM32L485xx) || defined (STM32L486xx) || defined (STM32L496xx) || defined (STM32L4A6xx)
/* Channel1 is used */
if (Channel == DAC_CHANNEL_1)
{
/* Disable the DMA channel */
status = HAL_DMA_Abort(hdac->DMA_Handle1);
/* Disable the DAC DMA underrun interrupt */
__HAL_DAC_DISABLE_IT(hdac, DAC_IT_DMAUDR1);
}
else /* Channel2 is used for */
{
/* Disable the DMA channel */
status = HAL_DMA_Abort(hdac->DMA_Handle2);
/* Disable the DAC DMA underrun interrupt */
__HAL_DAC_DISABLE_IT(hdac, DAC_IT_DMAUDR2);
}
#endif /* STM32L431xx STM32L432xx STM32L433xx STM32L442xx STM32L443xx */
/* STM32L471xx STM32L475xx STM32L476xx STM32L485xx STM32L486xx STM32L496xx STM32L4A6xx */
#if defined (STM32L451xx) || defined (STM32L452xx) || defined (STM32L462xx)
/* Disable the DMA channel */
status = HAL_DMA_Abort(hdac->DMA_Handle1);
/* Disable the DAC DMA underrun interrupt */
__HAL_DAC_DISABLE_IT(hdac, DAC_IT_DMAUDR1);
#endif /* STM32L451xx STM32L452xx STM32L462xx */
/* Check if DMA Channel effectively disabled */
if (status != HAL_OK)
{
/* Update DAC state machine to error */
hdac->State = HAL_DAC_STATE_ERROR;
}
else
{
/* Change DAC state */
hdac->State = HAL_DAC_STATE_READY;
}
/* Return function status */
return status;
}
/**
* @brief Disables DAC and stop conversion of channel.
* @param hdac: pointer to a DAC_HandleTypeDef structure that contains
* the configuration information for the specified DAC.
* @param Channel: The selected DAC channel.
* This parameter can be one of the following values:
* @arg DAC_CHANNEL_1: DAC1 Channel1 selected
* @arg DAC_CHANNEL_2: DAC1 Channel2 selected
* @arg DAC_CHANNEL_1: DAC2 Channel1 selected
* @retval HAL status
*/
HAL_StatusTypeDef HAL_DAC_Stop_DMA(DAC_HandleTypeDef* hdac, uint32_t Channel)
{
HAL_StatusTypeDef status = HAL_OK;
/* Check the parameters */
assert_param(IS_DAC_CHANNEL_INSTANCE(hdac->Instance, Channel));
/* Disable the selected DAC channel DMA request */
hdac->Instance->CR &= ~(DAC_CR_DMAEN1 << Channel);
/* Disable the Peripheral */
__HAL_DAC_DISABLE(hdac, Channel);
/* Disable the DMA channel */
/* Channel1 is used */
if (Channel == DAC_CHANNEL_1)
{
/* Disable the DMA channel */
status = HAL_DMA_Abort(hdac->DMA_Handle1);
/* Disable the DAC DMA underrun interrupt */
__HAL_DAC_DISABLE_IT(hdac, DAC_IT_DMAUDR1);
}
#if defined(STM32F303xE) || defined(STM32F398xx) || \
defined(STM32F303xC) || defined(STM32F358xx) || \
defined(STM32F303x8) || defined(STM32F334x8) || defined(STM32F328xx) || \
defined(STM32F373xC) || defined(STM32F378xx)
/* For all products including channel 2 */
/* DAC channel 2 is available on top of DAC channel 1 */
else /* Channel2 is used for */
{
/* Disable the DMA channel */
status = HAL_DMA_Abort(hdac->DMA_Handle2);
/* Disable the DAC DMA underrun interrupt */
__HAL_DAC_DISABLE_IT(hdac, DAC_IT_DMAUDR2);
}
#endif
/* Check if DMA Channel effectively disabled */
if (status != HAL_OK)
{
/* Update DAC state machine to error */
hdac->State = HAL_DAC_STATE_ERROR;
}
else
{
/* Change DAC state */
hdac->State = HAL_DAC_STATE_READY;
}
/* Return function status */
return status;
}
