uuewuw2 发表于 2018-9-14 14:46
两个节点加120欧姆电阻。

这个电阻是加了的，但是还是不对，我的配置如下帮忙指教一下;
        GPIO_InitTypeDef       GPIO_InitStructure;
        CAN_InitTypeDef        CAN_InitStructure;
        CAN_FilterInitTypeDef  CAN_FilterInitStructure;
       
        RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);
       
       
        GPIO_PinAFConfig(GPIOB,GPIO_PinSource8,GPIO_AF_CAN1);
        GPIO_PinAFConfig(GPIOB,GPIO_PinSource9,GPIO_AF_CAN1);
       
        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9;
        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
        GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
        GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
        GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_UP;
        GPIO_Init(GPIOB, &GPIO_InitStructure);
       
       
        RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN1, ENABLE);
       
        //CAN_DeInit(CAN1);
        CAN_DBGFreeze(CAN1,DISABLE);
  CAN_InitStructure.CAN_TTCM = DISABLE;
        CAN_InitStructure.CAN_ABOM = DISABLE;
  //CAN_InitStructure.CAN_ABOM = ENABLE;
  CAN_InitStructure.CAN_AWUM = DISABLE;
  CAN_InitStructure.CAN_NART = DISABLE ;
  CAN_InitStructure.CAN_RFLM = DISABLE;
  CAN_InitStructure.CAN_TXFP = ENABLE;
  CAN_InitStructure.CAN_Mode = CAN_Mode_Normal;
  CAN_InitStructure.CAN_SJW = CAN_SJW_1tq;
  CAN_InitStructure.CAN_BS1 = CAN_BS1_12tq;
  CAN_InitStructure.CAN_BS2 = CAN_BS2_8tq;
  CAN_InitStructure.CAN_Prescaler =2;
        CAN_Init(CAN1, &CAN_InitStructure);
       
       
        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=CAN_Filter_FIFO0;
  CAN_FilterInitStructure.CAN_FilterActivation=ENABLE;
  CAN_FilterInit(&CAN_FilterInitStructure);
       
        TxMessage.StdId = 0x321;
  TxMessage.ExtId = 0x01;
  TxMessage.RTR = CAN_RTR_DATA;
  TxMessage.IDE = CAN_ID_STD;
  TxMessage.DLC = 8;  

等大神出现

cmh20 发表于 2018-9-14 15:19
等大神出现

还没有大神出现。。。