您好,
我使用STM32F103 48pin , PA11 PA12為USB(使用HID) , PB8 PB9為CAN,
當USB接上時會找到USB裝置,執行CAN傳送,結果USB會斷掉(電腦的裝置管理員顯示錯誤),
而且產生死機現象(一直中斷USB_LP_CAN_RX0_IRQHandler())
     CAN1_Init();
     RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN, DISABLE);
     USB_Cable = 1;
     USB_Port_Init();  
          if(KEY1 == 0)
           {
              USB_Cable_Config(DISABLE);
              CAN_Write();  
              Dly10ms();
              USB_Cable_Config(ENABLE);
          }  
void CAN1_Init(void)
{
     NVIC_InitStructure.NVIC_IRQChannel = USB_LP_CAN_RX0_IRQChannel;
     NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
     NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
     NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
     NVIC_Init(&NVIC_InitStructure); 
   
     CAN_DeInit();
     CAN_StructInit(&CAN_InitStructure);
     CAN_InitStructure.CAN_TTCM = 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_3tq;
     CAN_InitStructure.CAN_BS2 = CAN_BS2_5tq;
     CAN_InitStructure.CAN_Prescaler = 4;
     CAN_Init(&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=((MAIN_CAN_ID16;
     CAN_FilterInitStructure.CAN_FilterIdLow=((MAIN_CAN_ID

您好，usb和can是复用的，也就是说，同一时间只能用一种功能的，解决这个可以选105双can功能的芯片啊亲

共用的引脚在使用时要加以区分的哦。

没用过USB,学习啦

STM32F103中usb和can是只能够用一种功能之一，书上一开始就说明的

能不能将你的usb固件代码传上来呀？我现在再搞ST32F103的USB，可是我发现我下载的固件驱动里面都没有usb的固件代码，也是醉了，希望楼主能传一下