不用单独的关闭啊，我那个贼简单，采集一次，DMA2D刷新一次，采用的DMA的单次模式，不是循环一直刷新，这种的才需要你专门终止关闭。
采集完毕了，我哪里直接调用了HAL_DCMI_Stop，这个函数把DCMI和DMA都禁止了，非常方便。
下次启动，直接调用的CAM_Start和CAM_Start1。
[C] 纯文本查看 复制代码 /**
* @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;
}
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发表于 2022-8-10 16:40:14
发表于 2022-8-11 14:24:07
楼主
