stm32f103 CAN总线休眠唤醒设置-cubemx/freeRTOS

1、RCC选择

2、sys配置

3、 时钟配置

4、CAN参数配置

5、CAN中断配置开启CAN1的收/发和SCE中断

 6、添加freeRTOS和任务

7、主函数USER CODE 2中添加CAN启动和中断使能函数

  MX_CAN_Init();
  
  /* USER CODE BEGIN 2 */
  HAL_CAN_Start(&hcan);
  HAL_CAN_ActivateNotification(&hcan,CAN_IT_TX_MAILBOX_EMPTY | CAN_IT_RX_FIFO0_MSG_PENDING | CAN_IT_WAKEUP);

   /* USER CODE END 2 */

8、在一个任务中将一直发送CAN报文

void StartDefaultTask(void *argument)
{
  /* USER CODE BEGIN 5 */
  Can_Tx.StdId = 0x100;
  Can_Tx.ExtId = 0x123;
  Can_Tx.IDE = 0;
  Can_Tx.RTR = 0;
  Can_Tx.DLC = 8;
  /* Infinite loop */
  for(;;)
  {
        osDelay(100);
        HAL_CAN_AddTxMessage(&hcan,&Can_Tx,tdata,&pTxMailbox);
  }
  /* USER CODE END 5 */
}

8、任务中将CAN总线休眠

 void APPStartTask(void *argument)
{
  /* USER CODE BEGIN APPStartTask */
  /* Infinite loop */
  for(;;)
  {
      osDelay(15000);
        HAL_CAN_RequestSleep(&hcan);  //将CAN总线设置进入sleep mode
  }
  /* USER CODE END APPStartTask */
}

 9、CAN总线休眠后，在CAN接收引脚上监视到帧起始位(SOF)后唤醒CAN，并触发中断，中断需要清除sleep位

void HAL_CAN_WakeUpFromRxMsgCallback(CAN_HandleTypeDef *hcan)
{
        HAL_CAN_WakeUp(hcan);
}

标签：stm32f103,CODE,HAL,freeRTOS,Tx,void,USER,cubemx,hcan
来源： https://blog.csdn.net/qq_16053019/article/details/119169961