CAN_InitTypeDef        CAN_InitStructure;
CAN_FilterInitTypeDef  CAN_FilterInitStructure;
CanTxMsg TxMessage;
uint8_t ubKeyNumber = 0x0;
static void NVIC_Config(void);
static void CAN_Config(void);
static void Delay(void);
void bsp_can(void);
void Init_RxMes(CanRxMsg *RxMessage);
void main(void)
{
  NVIC_Config();
  CAN_Config();
    bsp_can();

  while(1)
  {
    TxMessage.StdId = 0x321;
     TxMessage.ExtId = 0x01;
     TxMessage.RTR = CAN_RTR_DATA;
    TxMessage.IDE = CAN_ID_STD;
       TxMessage.DLC = 8;
        TxMessage.Data[0] = 12;
        TxMessage.Data[1] = 12;
        TxMessage.Data[2] = 12;
        TxMessage.Data[3] = 12;
        TxMessage.Data[4] = 12;
        TxMessage.Data[5] = 12;
        TxMessage.Data[6] = 12;
        TxMessage.Data[7] = 12;

        CAN_Transmit(CANx, &TxMessage);
        Delay();
  }
}

static void CAN_Config(void)
{

  RCC_APB1PeriphClockCmd(CAN_CLK, ENABLE);
  CAN_DeInit(CANx);
  CAN_InitStructure.CAN_TTCM = DISABLE;
  CAN_InitStructure.CAN_ABOM = DISABLE;
  CAN_InitStructure.CAN_AWUM = DISABLE;
  CAN_InitStructure.CAN_NART = DISABLE;
  CAN_InitStructure.CAN_RFLM = DISABLE;
  CAN_InitStructure.CAN_TXFP = DISABLE;
  CAN_InitStructure.CAN_Mode = CAN_Mode_Normal;
  CAN_InitStructure.CAN_SJW = CAN_SJW_1tq;
  CAN_InitStructure.CAN_BS1 = CAN_BS1_6tq;
  CAN_InitStructure.CAN_BS2 = CAN_BS2_8tq;
  CAN_InitStructure.CAN_Prescaler = 2;
  CAN_Init(CANx, &CAN_InitStructure);

  /* CAN filter init */
  CAN_FilterInitStructure.CAN_FilterNumber = 0;
  CAN_FilterInitStructure.CAN_FilterMode = CAN_FilterMode_IdMask;
  CAN_FilterInitStructure.CAN_FilterScale = CAN_FilterScale_32bit;
  CAN_FilterInitStructure.CAN_FilterIdHigh = 0x0000;
  CAN_FilterInitStructure.CAN_FilterIdLow = 0x0000;
  CAN_FilterInitStructure.CAN_FilterMaskIdHigh = 0x0000;
  CAN_FilterInitStructure.CAN_FilterMaskIdLow = 0x0000;
  CAN_FilterInitStructure.CAN_FilterFIFOAssignment = 0;
  CAN_FilterInitStructure.CAN_FilterActivation = ENABLE;
  CAN_FilterInit(&CAN_FilterInitStructure);
  CAN_ITConfig(CANx, CAN_IT_FMP0, ENABLE);
}


static void NVIC_Config(void)
{
  NVIC_InitTypeDef  NVIC_InitStructure;

  NVIC_InitStructure.NVIC_IRQChannel = CAN1_RX0_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
}

void bsp_can(void)
{
  
  GPIO_InitTypeDef GPIO_InitStructure;
  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOH|RCC_AHB1Periph_GPIOI, ENABLE);
     GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;   //rx
     GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
     GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
     GPIO_Init(GPIOI, &GPIO_InitStructure);

     GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;  //tx
     GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
     GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
     GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
     GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
     GPIO_Init(GPIOH, &GPIO_InitStructure);
}

can配置，两个GPIO口的配置GPIO_Mode，GPIO_PuPd，GPIO_OType设的对吗，我是stm32f4的板子，还有帮我看看有错误吗，为什么单片机那两个教没输出，我用示波器量的，没任何输出？