stm32f103 CAN发送消息挂起但不发送

123HHY

相同的程序，只是引脚不同但以作修改，在一个块103c8的板子上就可以收发正常，但在103vbt6上就有问题，发送的消息一直挂起，有没有谁遇到过这样的情况呢void CAN_Config()
{
  GPIO_InitTypeDef GPIO_InitStructure;
  CAN_InitTypeDef CAN_InitStructure;
  CAN_FilterInitTypeDef CAN_FilterInitStructure;

  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_AFIO, ENABLE);
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN1, ENABLE);

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;//CAN_Rx
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;//CAN_Tx
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  CAN_DeInit(CAN1);
  CAN_StructInit(&CAN_InitStructure);

  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_4tq;
  CAN_InitStructure.CAN_BS2 = CAN_BS2_3tq;
  CAN_InitStructure.CAN_Prescaler = 450;

  //初始化CAN
  CAN_Init(CAN1,&CAN_InitStructure);
  CAN_FilterInitStructure.CAN_FilterNumber = 1;//1号滤波器
  CAN_FilterInitStructure.CAN_FilterMode = CAN_FilterMode_IdMask;//标识符屏蔽位模式
  CAN_FilterInitStructure.CAN_FilterScale = CAN_FilterScale_32bit;
  CAN_FilterInitStructure.CAN_FilterIdHigh = 0;
  CAN_FilterInitStructure.CAN_FilterIdLow = 0;
  CAN_FilterInitStructure.CAN_FilterMaskIdHigh = 0;
  CAN_FilterInitStructure.CAN_FilterMaskIdLow = 0;
  CAN_FilterInitStructure.CAN_FilterFIFOAssignment = CAN_Filter_FIFO0;
  CAN_FilterInitStructure.CAN_FilterActivation = ENABLE;
  CAN_FilterInit(&CAN_FilterInitStructure);

  CAN_ITConfig(CAN1,CAN_IT_FMP0, ENABLE);
}

void CAN_NVIC_Config()
{
  NVIC_InitTypeDef NVIC_InitStructure;
  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);

  NVIC_InitStructure.NVIC_IRQChannel = USB_LP_CAN1_RX0_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
}

void USB_LP_CAN1_RX0_IRQHandler()
{
  while(CAN_GetITStatus(CAN1, CAN_IT_FMP0) == RESET);
  CAN_ClearITPendingBit(CAN1, CAN_IT_FMP0);

  CAN_Receive(CAN1, CAN_FIFO0, &RxMessage);

  if(RxMessage.DLC == 3)
    ON1_1;
}

void AnswerOK()
{
  TxMessage.StdId = ((0x000) | (MasterAdd & 0xff));    //主机地址，优先级0
  TxMessage.IDE = CAN_ID_STD;//选择发送标准帧
  TxMessage.RTR = CAN_RTR_DATA;//发送的是数据帧
  TxMessage.DLC = 3;//数据长度3B

  TxMessage.Data[0] = 0x03;
  TxMessage.Data[1] = SlaveAdd; //从机地址
  TxMessage.Data[2] = (TxMessage.Data[0])^(SlaveAdd)^0xb9;

  CAN_Transmit(CAN1, &TxMessage);
}

123HHY

quanyu520 发表于 2019-10-7 17:14
void Init_CAN(u8 speed)
{
    CAN_InitTypeDef  CAN_InitStructure;

自己解决了，谢谢

quanyu520

void Init_CAN(u8 speed)
{
    CAN_InitTypeDef  CAN_InitStructure;
          GPIO_InitTypeDef GPIO_InitStructure;
    //GPIO_PinRemapConfig(GPIO_Remap1_CAN1,ENABLE);
          /* Configure CAN pin: RX */                                                //éèÖÃCAN
          GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
          GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
          GPIO_Init(GPIOA, &GPIO_InitStructure);

          /* Configure CAN pin: TX */
          GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
          GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
          GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
          GPIO_Init(GPIOA, &GPIO_InitStructure);
    /* CAN register init */
    CAN_DeInit(CAN1);
    CAN_StructInit(&CAN_InitStructure);
   
    /* CAN cell init */
    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_11tq;
    CAN_InitStructure.CAN_BS2=CAN_BS2_6tq;
    CAN_InitStructure.CAN_Prescaler=speed;
    CAN_Init(CAN1, &CAN_InitStructure);
    CAN_ITConfig(CAN1, CAN_IT_FMP0, ENABLE);
}

这样 初始化试下  我这是VET6 的 测试没问题

quanyu520

quanyu520 发表于 2019-10-7 17:14
void Init_CAN(u8 speed)
{
    CAN_InitTypeDef  CAN_InitStructure;

参数  
#define can_500k 4  //500k
#define can_250k 8  //250k
#define can_125k 16  //125k