CAN Transmit timeout error

[Dennis Röbisch]

Posted on March 27, 2017 at 18:54

Hi everyone, I�m using a STM32F103 with SW4STM32 and CubeMX and I`m struggeling with the CAN Communication. When I`ll try to transmit Data with HAL_CAN_Transmit then I get a timeout error. Like I read here in other threads it could be a bug from the HAL library but I dont`t know how to solve this problem. Or it could be a problem with my code. So I hope someone can help me.

Here is my code. If you need some other parts of it I`ll post it too.

Thanks for your support

int main(void)

{

  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

  /* MCU Configuration----------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */

  HAL_Init();

  /* Configure the system clock */

  SystemClock_Config();

  /* Initialize all configured peripherals */

  MX_GPIO_Init();  MX_SPI1_Init();  MX_USART1_UART_Init();  MX_CAN_Init();

  /* USER CODE BEGIN 2 */

  __HAL_UART_ENABLE_IT(&huart1, UART_IT_RXNE);

  /* USER CODE END 2 */

  /* Infinite loop */

  /* USER CODE BEGIN WHILE */  HAL_GPIO_WritePin(GPIOD, USBEnable_Pin, GPIO_PIN_SET);  HAL_GPIO_WritePin(GPIOD, canRS_Pin, GPIO_PIN_SET);  HAL_UART_Receive_IT(&huart1,&Rx_data, 1);  printf('welcome\r\n');

  uint16_t SOC = 5500;

  uint16_t BatVoltage = 590;  uint16_t cellVoltageMax = 3900;  uint16_t cellVoltageMin = 3800;  uint8_t tempMax = 50;  uint8_t tempMin = 47;

  while (1)

  {     printf('Test\r\n');

     hcan.pTxMsg->Data[0] = 0b01110000;

     hcan.pTxMsg->Data[1] = (uint8_t) (SOC/1000);     hcan.pTxMsg->Data[2] = (uint8_t) ((BatVoltage & 0b111111111111) >> 4);     hcan.pTxMsg->Data[3] = (uint8_t) (((BatVoltage << 12) | ((cellVoltageMax & 0b0001111000000000) >> 1)) >> 8);     hcan.pTxMsg->Data[4] = (uint8_t) (((cellVoltageMax & 0b0000000111110000) >> 1) | ((cellVoltageMin & 0b0001110000000000) >> 10));     hcan.pTxMsg->Data[5] = (uint8_t) (((cellVoltageMin & 0b0000001111110000) >> 2) | (tempMax >> 6));     hcan.pTxMsg->Data[6] = (uint8_t) ((tempMax << 2) | (tempMin >> 6));     hcan.pTxMsg->Data[7] = (uint8_t) (tempMin << 2);

     printf('Data[0]: %d\r\n', hcan.pTxMsg->Data[0]);

     if (HAL_CAN_Transmit(&hcan, 10) != HAL_OK)

            {              /* Transmition Error */              //Error_Handler();         printf('CAN Transmit Error\r\n');            }     printf('%d\r\n', HAL_CAN_GetState(&hcan));     HAL_Delay(1000);  /* USER CODE END WHILE */

  /* USER CODE BEGIN 3 */

  }

  /* USER CODE END 3 */

}

/** System Clock Configuration

*/void SystemClock_Config(void){

  RCC_OscInitTypeDef RCC_OscInitStruct;

  RCC_ClkInitTypeDef RCC_ClkInitStruct;

    /**Initializes the CPU, AHB and APB busses clocks

    */  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;  RCC_OscInitStruct.HSEState = RCC_HSE_ON;  RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)  {    Error_Handler();  }

    /**Initializes the CPU, AHB and APB busses clocks

    */  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)

  {    Error_Handler();  }

  HAL_RCC_MCOConfig(RCC_MCO, RCC_MCO1SOURCE_PLLCLK, RCC_MCODIV_1);

    /**Configure the Systick interrupt time

    */  HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);

    /**Configure the Systick

    */  HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);

  /* SysTick_IRQn interrupt configuration */

  HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);}

/* CAN init function */

static void MX_CAN_Init(void){  CAN_FilterConfTypeDef  sFilterConfig;  static CanTxMsgTypeDef        TxMessage;  static CanRxMsgTypeDef        RxMessage;

  hcan.Instance = CAN1;

  hcan.pTxMsg = &TxMessage;  hcan.pRxMsg = &RxMessage;

  hcan.Init.Prescaler = 4;

  hcan.Init.Mode = CAN_MODE_NORMAL;  hcan.Init.SJW = CAN_SJW_2TQ;  hcan.Init.BS1 = CAN_BS1_12TQ;  hcan.Init.BS2 = CAN_BS2_5TQ;  hcan.Init.TTCM = DISABLE;  hcan.Init.ABOM = ENABLE;  hcan.Init.AWUM = ENABLE;  hcan.Init.NART = DISABLE;  hcan.Init.RFLM = DISABLE;  hcan.Init.TXFP = DISABLE;  if (HAL_CAN_Init(&hcan) != HAL_OK)  {    Error_Handler();  }

  sFilterConfig.FilterNumber = 0;

  sFilterConfig.FilterMode = CAN_FILTERMODE_IDMASK;  sFilterConfig.FilterScale = CAN_FILTERSCALE_32BIT;  sFilterConfig.FilterIdHigh = 0x0000;  sFilterConfig.FilterIdLow = 0x0000;  sFilterConfig.FilterMaskIdHigh = 0x0000;  sFilterConfig.FilterMaskIdLow = 0x0000;  sFilterConfig.FilterFIFOAssignment = 0;  sFilterConfig.FilterActivation = ENABLE;  sFilterConfig.BankNumber = 14;

   if (HAL_CAN_ConfigFilter(&hcan, &sFilterConfig) != HAL_OK)

   {     /* Filter configuration Error */     Error_Handler();   }

   hcan.pTxMsg->StdId = 0x100;

   hcan.pTxMsg->ExtId = 0x0;   hcan.pTxMsg->RTR = CAN_RTR_DATA;   hcan.pTxMsg->IDE = CAN_ID_STD;   hcan.pTxMsg->DLC = 8;

}

#can-timeout #can #stm32f103

[T J]

Posted on May 03, 2018 at 01:37

?

[Manoj Hiwarkar]

@Dennis Röbisch​  was the problem only with the hardware ? or software also ? because I am also facing the same error.