Skip to main content
kgedi
Associate
January 24, 2019
Question

stm32cubemx example code not able to receive

  • January 24, 2019
  • 0 replies
  • 737 views
#include "main.h"
#include "stm32f4xx_hal.h"
 
/* USER CODE BEGIN Includes */
 
/* USER CODE END Includes */
 
/* Private variables ---------------------------------------------------------*/
CAN_HandleTypeDef hcan1;
 
/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/
CAN_TxHeaderTypeDef TxHeader;
CAN_RxHeaderTypeDef RxHeader;
uint8_t TxData[8];
uint8_t RxData[8];
uint32_t TxMailbox;
/* USER CODE END PV */
 
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_CAN1_Init(void);
 
/* USER CODE BEGIN PFP */
/* Private function prototypes -----------------------------------------------*/
static void CAN_CONF(void);
/* USER CODE END PFP */
 
/* USER CODE BEGIN 0 */
 
/* USER CODE END 0 */
 
/**
 * @brief The application entry point.
 *
 * @retval None
 */
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();
 
 /* USER CODE BEGIN Init */
 
 /* USER CODE END Init */
 
 /* Configure the system clock */
 SystemClock_Config();
 
 /* USER CODE BEGIN SysInit */
 
 /* USER CODE END SysInit */
 
 /* Initialize all configured peripherals */
 MX_GPIO_Init();
 MX_CAN1_Init();
 /* USER CODE BEGIN 2 */
 CAN_CONF();
HAL_CAN_IRQHandler(&hcan1);
 /* USER CODE END 2 */
 
 /* Infinite loop */
 /* USER CODE BEGIN WHILE */
 while (1)
 {
 
 /* USER CODE END WHILE */
 
 /* USER CODE BEGIN 3 */
		HAL_GPIO_TogglePin(GPIOE, GPIO_PIN_0);
		HAL_Delay(500);
		 
HAL_CAN_RxFifo0MsgPendingCallback(&hcan1);
		HAL_Delay(10);
		
 }
 /* USER CODE END 3 */
 
}
 
/**
 * @brief System Clock Configuration
 * @retval None
 */
void SystemClock_Config(void)
{
 
 RCC_OscInitTypeDef RCC_OscInitStruct;
 RCC_ClkInitTypeDef RCC_ClkInitStruct;
 
 /**Configure the main internal regulator output voltage 
 */
 __HAL_RCC_PWR_CLK_ENABLE();
 
 __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
 
 /**Initializes the CPU, AHB and APB busses clocks 
 */
 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
 RCC_OscInitStruct.HSEState = RCC_HSE_ON;
 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
 RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
 RCC_OscInitStruct.PLL.PLLM = 4;
 RCC_OscInitStruct.PLL.PLLN = 72;
 RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
 RCC_OscInitStruct.PLL.PLLQ = 4;
 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
 {
 _Error_Handler(__FILE__, __LINE__);
 }
 
 /**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(__FILE__, __LINE__);
 }
 
 /**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);
}
 
/* CAN1 init function */
static void MX_CAN1_Init(void)
{
 
 hcan1.Instance = CAN1;
 hcan1.Init.Prescaler = 8;
 hcan1.Init.Mode = CAN_MODE_NORMAL;
 hcan1.Init.SyncJumpWidth = CAN_SJW_1TQ;
 hcan1.Init.TimeSeg1 = CAN_BS1_12TQ;
 hcan1.Init.TimeSeg2 = CAN_BS2_5TQ;
 hcan1.Init.TimeTriggeredMode = DISABLE;
 hcan1.Init.AutoBusOff = DISABLE;
 hcan1.Init.AutoWakeUp = DISABLE;
 hcan1.Init.AutoRetransmission = DISABLE;
 hcan1.Init.ReceiveFifoLocked = DISABLE;
 hcan1.Init.TransmitFifoPriority = DISABLE;
 if (HAL_CAN_Init(&hcan1) != HAL_OK)
 {
 _Error_Handler(__FILE__, __LINE__);
 }
 
}
 
/** Configure pins as 
 * Analog 
 * Input 
 * Output
 * EVENT_OUT
 * EXTI
*/
static void MX_GPIO_Init(void)
{
 
 GPIO_InitTypeDef GPIO_InitStruct;
 
 /* GPIO Ports Clock Enable */
 __HAL_RCC_GPIOH_CLK_ENABLE();
 __HAL_RCC_GPIOA_CLK_ENABLE();
 __HAL_RCC_GPIOE_CLK_ENABLE();
 
 /*Configure GPIO pin Output Level */
 HAL_GPIO_WritePin(GPIOE, GPIO_PIN_0, GPIO_PIN_RESET);
 
 /*Configure GPIO pin : PE0 */
 GPIO_InitStruct.Pin = GPIO_PIN_0;
 GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
 GPIO_InitStruct.Pull = GPIO_NOPULL;
 GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
 HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);
 
}
 
/* USER CODE BEGIN 4 */
static void CAN_CONF(void){
CAN_FilterTypeDef sFilterConfig;
	
	
 /*##-2- Configure the CAN Filter ###########################################*/
 sFilterConfig.FilterBank = 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 = CAN_RX_FIFO0;
 sFilterConfig.FilterActivation = ENABLE;
 sFilterConfig.SlaveStartFilterBank = 14;
 
 if (HAL_CAN_ConfigFilter(&hcan1, &sFilterConfig) != HAL_OK)
 {
 /* Filter configuration Error */
 Error_Handler();
 }
 
 /*##-3- Start the CAN peripheral ###########################################*/
 if (HAL_CAN_Start(&hcan1) != HAL_OK)
 {
 /* Start Error */
 Error_Handler();
 }
	/*##-4- Activate CAN RX notification #######################################*/
 if (HAL_CAN_ActivateNotification(&hcan1, CAN_IT_RX_FIFO0_MSG_PENDING) != HAL_OK)
 {
 /* Notification Error */
 Error_Handler();
 }
 
 /*##-5- Configure Transmission process #####################################*/
 TxHeader.StdId = 0x321;
 TxHeader.ExtId = 0x01;
 TxHeader.RTR = CAN_RTR_DATA;
 TxHeader.IDE = CAN_ID_STD;
 TxHeader.DLC = 2;
 TxHeader.TransmitGlobalTime = DISABLE;
	
 
	
}
 
void HAL_CAN_RxFifo0MsgPendingCallback(CAN_HandleTypeDef *hcan)
{
	
 /* Get RX message */
 if (HAL_CAN_GetRxMessage(hcan, CAN_RX_FIFO0, &RxHeader, RxData) != HAL_OK)
 {
 /* Reception Error */
 Error_Handler();
 }
 
 /* Display LEDx */
 if ((RxHeader.StdId == 0x321) && (RxHeader.IDE == CAN_ID_STD) && (RxHeader.DLC == 2))
 {
//led yak
 }
}
 
/* USER CODE END 4 */
 
/**
 * @brief This function is executed in case of error occurrence.
 * @param file: The file name as string.
 * @param line: The line in file as a number.
 * @retval None
 */
void _Error_Handler(char *file, int line)
{
 /* USER CODE BEGIN Error_Handler_Debug */
 /* User can add his own implementation to report the HAL error return state */
 while(1)
 {
		HAL_GPIO_WritePin(GPIOE, GPIO_PIN_0, GPIO_PIN_RESET);
 }
 /* USER CODE END Error_Handler_Debug */
}
 
#ifdef USE_FULL_ASSERT
/**
 * @brief Reports the name of the source file and the source line number
 * where the assert_param error has occurred.
 * @param file: pointer to the source file name
 * @param line: assert_param error line source number
 * @retval None
 */
void assert_failed(uint8_t* file, uint32_t line)
{ 
 /* USER CODE BEGIN 6 */
 /* User can add his own implementation to report the file name and line number,
 tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
 /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
 
/**
 * @}
 */
 
/**
 * @}
 */
 
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

While debug process there is a error when program execute

"HAL_CAN_RxFifo0MsgPendingCallback(&hcan1);"

/* Check the Rx FIFO */
 if (RxFifo == CAN_RX_FIFO0) /* Rx element is assigned to Rx FIFO 0 */
 {
 /* Check that the Rx FIFO 0 is not empty */
 if ((hcan->Instance->RF0R & CAN_RF0R_FMP0) == RESET)
 {
 /* Update error code */
 hcan->ErrorCode |= HAL_CAN_ERROR_PARAM;//----> STACK IN HERE
 
 return HAL_ERROR;
 }
 }

the code stack in " hcan->ErrorCode |= HAL_CAN_ERROR_PARAM;" and the error code is "0x00040000" .

Can you help me?

Best Regards...

This topic has been closed for replies.