STM32从CAN总线唤醒

Question

I am trying to wake up the CPU from the CAN bus but it fails. Data from the bus processor receive but does not wake it up, for example, an interrupt from GPIO wakes it up and then it responds to the last 3 data from CAN Bus

CPU STM32F103C6

  HAL_SuspendTick();
  HAL_TIM_Base_Stop(&htim1);
  HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFI);
  HAL_TIM_Base_Start(&htim1);
  HAL_ResumeTick();
  tick_sleep = HAL_GetTick();

HAL Config interrupt

CAN Bus config

    void MX_CAN_Init(void)
{
 
  /* USER CODE BEGIN CAN_Init 0 */
 
  /* USER CODE END CAN_Init 0 */
 
  /* USER CODE BEGIN CAN_Init 1 */
 
  /* USER CODE END CAN_Init 1 */
  hcan.Instance = CAN1;
  hcan.Init.Prescaler = 6;
  hcan.Init.Mode = CAN_MODE_NORMAL;
  hcan.Init.SyncJumpWidth = CAN_SJW_1TQ;
  hcan.Init.TimeSeg1 = CAN_BS1_2TQ;
  hcan.Init.TimeSeg2 = CAN_BS2_1TQ;
  hcan.Init.TimeTriggeredMode = DISABLE;
  hcan.Init.AutoBusOff = ENABLE;
  hcan.Init.AutoWakeUp = ENABLE;
  hcan.Init.AutoRetransmission = ENABLE;
  hcan.Init.ReceiveFifoLocked = DISABLE;
  hcan.Init.TransmitFifoPriority = DISABLE;
  if (HAL_CAN_Init(&hcan) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN CAN_Init 2 */
  HAL_CAN_Start(&hcan);
    CAN_FilterTypeDef  sFilterConfig;
    sFilterConfig.FilterIdHigh   = 0xFFFF;
    sFilterConfig.FilterIdLow   = 0xFFFF;
    sFilterConfig.FilterMaskIdHigh = 0;
    sFilterConfig.FilterMaskIdLow = 0;
    sFilterConfig.FilterFIFOAssignment = CAN_RX_FIFO0;
    sFilterConfig.FilterBank = 0;
    sFilterConfig.FilterMode = CAN_FILTERMODE_IDMASK;
    sFilterConfig.FilterScale = CAN_FILTERSCALE_16BIT;
    sFilterConfig.FilterActivation = ENABLE;
    sFilterConfig.SlaveStartFilterBank = 0;
 
    HAL_CAN_ConfigFilter(&hcan,&sFilterConfig);
  /* USER CODE END CAN_Init 2 */
 
}

Answer 1

I forgot to run interrupts from CAN

      /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_CAN_Init();
  MX_I2C1_Init();
  MX_TIM3_Init();
  MX_USART2_UART_Init();
  MX_TIM1_Init();
  /* USER CODE BEGIN 2 */
  HAL_TIM_PWM_Start(&htim3, TIM_CHANNEL_1);
  HAL_TIM_PWM_Start(&htim3, TIM_CHANNEL_3);
  HAL_TIM_PWM_Start(&htim3, TIM_CHANNEL_4);
  HAL_TIM_Base_Start_IT(&htim1);
  HAL_CAN_ActivateNotification(&hcan, CAN_IT_RX_FIFO0_MSG_PENDING); // CAN interrupts start