你好，
我有開個專案MCU選用的是STM32F091CBTx 包含CANBUS的應用，
直接下載到在NUCLEO64(STM32F091RC)的時候，CAN_TX (PA12)是可以發出CAN的訊息出來

可是當我把同一個專案直接下載到STM32F091CBTx應用板上的時候，CAN_TX (PA12)發出CAN的訊息卻是不正確的
請問一下，這是什麼原因

程式碼如下
/* CAN init function */
void MX_CAN_Init(void)
{
  CAN_FilterConfTypeDef  sFilterConfig;
  hcan.Instance = CAN;
  hcan.Init.Prescaler = 3;
  hcan.Init.Mode = CAN_MODE_NORMAL;
  hcan.Init.SJW = CAN_SJW_1TQ;
  hcan.Init.BS1 = CAN_BS1_10TQ;
  hcan.Init.BS2 = CAN_BS2_4TQ;
  hcan.Init.TTCM = DISABLE;
  hcan.Init.ABOM = ENABLE;
  hcan.Init.AWUM = DISABLE;
  hcan.Init.NART = DISABLE;
  hcan.Init.RFLM = DISABLE;
  hcan.Init.TXFP = DISABLE;
  if (HAL_CAN_Init(&hcan) != HAL_OK)
  {
    _Error_Handler(__FILE__, __LINE__);
  }

        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 = 0;
        HAL_CAN_ConfigFilter(&hcan, &sFilterConfig);

}

//==========================================

void HAL_CAN_MspInit(CAN_HandleTypeDef* canHandle)
{

  GPIO_InitTypeDef GPIO_InitStruct;
  if(canHandle->Instance==CAN)
  {
  /* USER CODE BEGIN CAN_MspInit 0 */

  /* USER CODE END CAN_MspInit 0 */
    /* CAN clock enable */


    /**CAN GPIO Configuration   
    PA11     ------> CAN_RX
    PA12     ------> CAN_TX
    */
    GPIO_InitStruct.Pin = GPIO_PIN_11|GPIO_PIN_12;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_PULLUP;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF4_CAN;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
    __HAL_RCC_CAN1_CLK_ENABLE();


    /* CAN interrupt Init */
    HAL_NVIC_SetPriority(CEC_CAN_IRQn, 0, 0);
    HAL_NVIC_EnableIRQ(CEC_CAN_IRQn);
  /* USER CODE BEGIN CAN_MspInit 1 */

  /* USER CODE END CAN_MspInit 1 */
  }
}

void HAL_CAN_MspDeInit(CAN_HandleTypeDef* canHandle)
{

  if(canHandle->Instance==CAN)
  {
  /* USER CODE BEGIN CAN_MspDeInit 0 */

  /* USER CODE END CAN_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_CAN1_CLK_DISABLE();

    /**CAN GPIO Configuration   
    PA11     ------> CAN_RX
    PA12     ------> CAN_TX
    */
    HAL_GPIO_DeInit(GPIOA, GPIO_PIN_11|GPIO_PIN_12);

    /* CAN interrupt Deinit */
    HAL_NVIC_DisableIRQ(CEC_CAN_IRQn);
  /* USER CODE BEGIN CAN_MspDeInit 1 */

  /* USER CODE END CAN_MspDeInit 1 */
  }
}

//===================================================
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();

  SystemClock_Config();

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_CAN_Init();

  /* USER CODE BEGIN 2 */
  CANTxMessage.DLC = 8;
  CANTxMessage.IDE = CAN_ID_STD;
  CANTxMessage.StdId = 0x07;
  CANTxMessage.RTR = CAN_RTR_DATA;
  CANTxMessage.Data[0] = 0;
  CANTxMessage.Data[1] = 10;
  CANTxMessage.Data[2] = 20;
  CANTxMessage.Data[3] = 30;
  CANTxMessage.Data[4] = 40;
  CANTxMessage.Data[5] = 50;
  CANTxMessage.Data[6] = 60;
  CANTxMessage.Data[7] = 70;
  /* USER CODE END 2 */
  hcan.pTxMsg = &CANTxMessage;

  while (1)
  {
  /* USER CODE END WHILE */
          HAL_Delay(100);
          HAL_CAN_Transmit(&hcan,100);
  /* USER CODE BEGIN 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.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL6;
  RCC_OscInitStruct.PLL.PREDIV = RCC_PREDIV_DIV1;
  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_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != 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);
}