can

f427芯片can发送不成功 求大佬解答

在配置完can波特率,中断之后生成代码,在调用f4的1.25.1版本的库的HAL_CAN_AddTxMessage();函数后并没有发送


#############can1,can2配置代码######################

#include "can.h"


/* USER CODE BEGIN 0 */


/* USER CODE END 0 */


CAN_HandleTypeDef hcan1;

CAN_HandleTypeDef hcan2;


/* CAN1 init function */

void MX_CAN1_Init(void)

{


  hcan1.Instance = CAN1;

  hcan1.Init.Prescaler = 9;

  hcan1.Init.Mode = CAN_MODE_LOOPBACK;

  hcan1.Init.SyncJumpWidth = CAN_SJW_1TQ;

  hcan1.Init.TimeSeg1 = CAN_BS1_3TQ;

  hcan1.Init.TimeSeg2 = CAN_BS2_1TQ;

  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();

  }


}

/* CAN2 init function */

void MX_CAN2_Init(void)

{


  hcan2.Instance = CAN2;

  hcan2.Init.Prescaler = 9;

  hcan2.Init.Mode = CAN_MODE_LOOPBACK;

  hcan2.Init.SyncJumpWidth = CAN_SJW_1TQ;

  hcan2.Init.TimeSeg1 = CAN_BS1_3TQ;

  hcan2.Init.TimeSeg2 = CAN_BS2_1TQ;

  hcan2.Init.TimeTriggeredMode = DISABLE;

  hcan2.Init.AutoBusOff = DISABLE;

  hcan2.Init.AutoWakeUp = DISABLE;

  hcan2.Init.AutoRetransmission = DISABLE;

  hcan2.Init.ReceiveFifoLocked = DISABLE;

  hcan2.Init.TransmitFifoPriority = DISABLE;

  if (HAL_CAN_Init(&hcan2) != HAL_OK)

  {

    Error_Handler();

  }


}


static uint32_t HAL_RCC_CAN1_CLK_ENABLED=0;


void HAL_CAN_MspInit(CAN_HandleTypeDef* canHandle)

{


  GPIO_InitTypeDef GPIO_InitStruct = {0};

  if(canHandle->Instance==CAN1)

  {

  /* USER CODE BEGIN CAN1_MspInit 0 */


  /* USER CODE END CAN1_MspInit 0 */

    /* CAN1 clock enable */

    HAL_RCC_CAN1_CLK_ENABLED++;

    if(HAL_RCC_CAN1_CLK_ENABLED==1){

      __HAL_RCC_CAN1_CLK_ENABLE();

    }


    __HAL_RCC_GPIOB_CLK_ENABLE();

    /**CAN1 GPIO Configuration

    PB8     ------> CAN1_RX

    PB9     ------> CAN1_TX

    */

    GPIO_InitStruct.Pin = GPIO_PIN_8|GPIO_PIN_9;

    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;

    GPIO_InitStruct.Pull = GPIO_NOPULL;

    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;

    GPIO_InitStruct.Alternate = GPIO_AF9_CAN1;

    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);


    /* CAN1 interrupt Init */

    HAL_NVIC_SetPriority(CAN1_RX0_IRQn, 0, 0);

    HAL_NVIC_EnableIRQ(CAN1_RX0_IRQn);

  /* USER CODE BEGIN CAN1_MspInit 1 */


  /* USER CODE END CAN1_MspInit 1 */

  }

  else if(canHandle->Instance==CAN2)

  {

  /* USER CODE BEGIN CAN2_MspInit 0 */


  /* USER CODE END CAN2_MspInit 0 */

    /* CAN2 clock enable */

    __HAL_RCC_CAN2_CLK_ENABLE();

    HAL_RCC_CAN1_CLK_ENABLED++;

    if(HAL_RCC_CAN1_CLK_ENABLED==1){

      __HAL_RCC_CAN1_CLK_ENABLE();

    }


    __HAL_RCC_GPIOB_CLK_ENABLE();

    /**CAN2 GPIO Configuration

    PB5     ------> CAN2_RX

    PB6     ------> CAN2_TX

    */

    GPIO_InitStruct.Pin = GPIO_PIN_5|GPIO_PIN_6;

    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;

    GPIO_InitStruct.Pull = GPIO_NOPULL;

    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;

    GPIO_InitStruct.Alternate = GPIO_AF9_CAN2;

    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);


    /* CAN2 interrupt Init */

    HAL_NVIC_SetPriority(CAN2_RX0_IRQn, 0, 0);

    HAL_NVIC_EnableIRQ(CAN2_RX0_IRQn);

  /* USER CODE BEGIN CAN2_MspInit 1 */


  /* USER CODE END CAN2_MspInit 1 */

  }

}


void HAL_CAN_MspDeInit(CAN_HandleTypeDef* canHandle)

{


  if(canHandle->Instance==CAN1)

  {

  /* USER CODE BEGIN CAN1_MspDeInit 0 */


  /* USER CODE END CAN1_MspDeInit 0 */

    /* Peripheral clock disable */

    HAL_RCC_CAN1_CLK_ENABLED--;

    if(HAL_RCC_CAN1_CLK_ENABLED==0){

      __HAL_RCC_CAN1_CLK_DISABLE();

    }


    /**CAN1 GPIO Configuration

    PB8     ------> CAN1_RX

    PB9     ------> CAN1_TX

    */

    HAL_GPIO_DeInit(GPIOB, GPIO_PIN_8|GPIO_PIN_9);


    /* CAN1 interrupt Deinit */

    HAL_NVIC_DisableIRQ(CAN1_RX0_IRQn);

  /* USER CODE BEGIN CAN1_MspDeInit 1 */


  /* USER CODE END CAN1_MspDeInit 1 */

  }

  else if(canHandle->Instance==CAN2)

  {

  /* USER CODE BEGIN CAN2_MspDeInit 0 */


  /* USER CODE END CAN2_MspDeInit 0 */

    /* Peripheral clock disable */

    __HAL_RCC_CAN2_CLK_DISABLE();

    HAL_RCC_CAN1_CLK_ENABLED--;

    if(HAL_RCC_CAN1_CLK_ENABLED==0){

      __HAL_RCC_CAN1_CLK_DISABLE();

    }


    /**CAN2 GPIO Configuration

    PB5     ------> CAN2_RX

    PB6     ------> CAN2_TX

    */

    HAL_GPIO_DeInit(GPIOB, GPIO_PIN_5|GPIO_PIN_6);


    /* CAN2 interrupt Deinit */

    HAL_NVIC_DisableIRQ(CAN2_RX0_IRQn);

  /* USER CODE BEGIN CAN2_MspDeInit 1 */


  /* USER CODE END CAN2_MspDeInit 1 */

  }

}


##############主函数配置发送结构体代码##########################

#include "main.h"

#include "can.h"

#include "gpio.h"


/* Private includes ----------------------------------------------------------*/

/* USER CODE BEGIN Includes */


/* USER CODE END Includes */


/* Private typedef -----------------------------------------------------------*/

/* USER CODE BEGIN PTD */


/* USER CODE END PTD */


/* Private define ------------------------------------------------------------*/

/* USER CODE BEGIN PD */

/* USER CODE END PD */


/* Private macro -------------------------------------------------------------*/

/* USER CODE BEGIN PM */


/* USER CODE END PM */


/* Private variables ---------------------------------------------------------*/


/* USER CODE BEGIN PV */


/* USER CODE END PV */


/* Private function prototypes -----------------------------------------------*/

void SystemClock_Config(void);

/* USER CODE BEGIN PFP */


/* USER CODE END PFP */


/* Private user code ---------------------------------------------------------*/

/* USER CODE BEGIN 0 */


CAN_TxHeaderTypeDef TxHeader;


void CAN_Send_Msg(CAN_HandleTypeDef *hcan,uint8_t *msg,uint8_t len,uint32_t id)//CAN Transmit

{

CAN_TxHeaderTypeDef Tx_Header;

uint32_t TxMailBox;

Tx_Header.StdId = id;

Tx_Header.IDE = CAN_ID_STD;

Tx_Header.RTR = CAN_RTR_DATA;

Tx_Header.TransmitGlobalTime = DISABLE;

Tx_Header.DLC = len;

HAL_CAN_AddTxMessage(hcan,&Tx_Header,msg,&TxMailBox);

}





uint8_t a = 8;


uint8_t data[8] = {0x80,0xff,0x80,0xff,0x80,0xff,0x80,0xff};



/* USER CODE END 0 */


/**

  * @brief  The application entry point.

  * @retval int

  */

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();

  MX_CAN2_Init();

  /* USER CODE BEGIN 2 */


  /* USER CODE END 2 */


  /* Infinite loop */

  /* USER CODE BEGIN WHILE */

  while (1)

  {

    /* USER CODE END WHILE */



CAN_Send_Msg(&hcan1,data,a,0x1ff);




    /* USER CODE BEGIN 3 */


  }

  /* USER CODE END 3 */

}


/**

  * @brief System Clock Configuration

  * @retval None

  */

void SystemClock_Config(void)

{

  RCC_OscInitTypeDef RCC_OscInitStruct = {0};

  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};


  /** Configure the main internal regulator output voltage

  */

  __HAL_RCC_PWR_CLK_ENABLE();

  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);

  /** Initializes the RCC Oscillators according to the specified parameters

  * in the RCC_OscInitTypeDef structure.

  */

  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 = 6;

  RCC_OscInitStruct.PLL.PLLN = 180;

  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;

  RCC_OscInitStruct.PLL.PLLQ = 4;

  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)

  {

    Error_Handler();

  }

  /** Activate the Over-Drive mode

  */

  if (HAL_PWREx_EnableOverDrive() != HAL_OK)

  {

    Error_Handler();

  }

  /** Initializes the CPU, AHB and APB buses 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_DIV4;

  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;


  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK)

  {

    Error_Handler();

  }

}


/* USER CODE BEGIN 4 */


/* USER CODE END 4 */


/**

  * @brief  This function is executed in case of error occurrence.

  * @retval None

  */

void Error_Handler(void)

{

  /* USER CODE BEGIN Error_Handler_Debug */

  /* User can add his own implementation to report the HAL error return state */

  __disable_irq();

  while (1)

  {

  }

  /* 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,

     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */

  /* USER CODE END 6 */

}

#endif /* USE_FULL_ASSERT */




######################################################################




由于不懂,故自己觉得代码配置没有问题,忘大佬们解惑


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注:开发板与接受端已经连接can通讯芯片,上拉电阻阻也合理。



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