/**
* @brief Suspends the Camera capture.
* @param None
* @retval None
*/
void BSP_CAMERA_Suspend(void)
{
/* Disable the DMA */
__HAL_DMA_DISABLE(hdcmi_eval.DMA_Handle);
/* Disable the DCMI */
__HAL_DCMI_DISABLE(&hdcmi_eval);
}
/**
* @brief Disable DCMI DMA request and Disable DCMI capture
* @param hdcmi: pointer to a DCMI_HandleTypeDef structure that contains
* the configuration information for DCMI.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_DCMI_Stop(DCMI_HandleTypeDef* hdcmi)
{
uint32_t tickstart = 0;
/* Lock the DCMI peripheral state */
hdcmi->State = HAL_DCMI_STATE_BUSY;
__HAL_DCMI_DISABLE(hdcmi);
/* Disable Capture */
DCMI->CR &= ~(DCMI_CR_CAPTURE);
/* Get tick */
tickstart = HAL_GetTick();
/* Check if the DCMI capture effectively disabled */
while((hdcmi->Instance->CR & DCMI_CR_CAPTURE) != 0)
{
if((HAL_GetTick() - tickstart ) > HAL_TIMEOUT_DCMI_STOP)
{
/* Process Unlocked */
__HAL_UNLOCK(hdcmi);
/* Update error code */
hdcmi->ErrorCode |= HAL_DCMI_ERROR_TIMEOUT;
/* Change DCMI state */
hdcmi->State = HAL_DCMI_STATE_TIMEOUT;
return HAL_TIMEOUT;
}
}
/* Disable the DMA */
HAL_DMA_Abort(hdcmi->DMA_Handle);
/* Update error code */
hdcmi->ErrorCode |= HAL_DCMI_ERROR_NONE;
/* Change DCMI state */
hdcmi->State = HAL_DCMI_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hdcmi);
/* Return function status */
return HAL_OK;
}
/**
* @brief Disable DCMI DMA request and Disable DCMI capture
* @param hdcmi: pointer to a DCMI_HandleTypeDef structure that contains
* the configuration information for DCMI.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_DCMI_Stop(DCMI_HandleTypeDef* hdcmi)
{
register uint32_t count = HAL_TIMEOUT_DCMI_STOP * (SystemCoreClock /8/1000);
HAL_StatusTypeDef status = HAL_OK;
/* Process locked */
__HAL_LOCK(hdcmi);
/* Lock the DCMI peripheral state */
hdcmi->State = HAL_DCMI_STATE_BUSY;
/* Disable Capture */
hdcmi->Instance->CR &= ~(DCMI_CR_CAPTURE);
/* Check if the DCMI capture effectively disabled */
do
{
if (count-- == 0)
{
/* Update error code */
hdcmi->ErrorCode |= HAL_DCMI_ERROR_TIMEOUT;
status = HAL_TIMEOUT;
break;
}
}
while((hdcmi->Instance->CR & DCMI_CR_CAPTURE) != 0);
/* Disable the DCMI */
__HAL_DCMI_DISABLE(hdcmi);
/* Disable the DMA */
HAL_DMA_Abort(hdcmi->DMA_Handle);
/* Update error code */
hdcmi->ErrorCode |= HAL_DCMI_ERROR_NONE;
/* Change DCMI state */
hdcmi->State = HAL_DCMI_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hdcmi);
/* Return function status */
return status;
}