关于CAN接收中断

marcus · 发表于 2018-5-30 16:13:10

参考原子的例程，写了个CAN的发送接收程序，采用的是中断接收，实际过程中发送没问题，可以一接收到CAN数据，程序就一直停留在CAN中断里面出不来，不执行主函数

主函数
[mw_shl_code=c,true]  while(1)
{

CAN_Transmit(CAN1, &temp_Tx);
printf("t:%d\r\n",t);
delay_ms(500);
t++;
}    [/mw_shl_code]

中断函数：
[mw_shl_code=c,true]void USB_LP_CAN1_RX0_IRQHandler(void)
{
  CanRxMsg RxMessage ;
int i=0;

  CAN_Receive(CAN1, 1, &RxMessage);

for(i=0;i<8;i++)

printf("rxbuf[%d]:%x\r\n",i,RxMessage.Data);
}[/mw_shl_code]

CAN初始化部分
[mw_shl_code=c,true] CAN_FilterInitStructure.CAN_FilterNumber=0; //1yÂËÆ÷0
CAN_FilterInitStructure.CAN_FilterMode=CAN_FilterMode_IdMask;//CAN_FilterMode_IdList; //
CAN_FilterInitStructure.CAN_FilterScale=CAN_FilterScale_32bit; //32Î»¿í
CAN_FilterInitStructure.CAN_FilterIdHigh=((uint16_t)(0x01<<5)); //
CAN_FilterInitStructure.CAN_FilterIdLow=(uint16_t)0x0|CAN_ID_STD;
CAN_FilterInitStructure.CAN_FilterMaskIdHigh=0x00;//
CAN_FilterInitStructure.CAN_FilterMaskIdLow=0x00;
CAN_FilterInitStructure.CAN_FilterFIFOAssignment=CAN_Filter_FIFO0;//1yÂËÆ÷01Øáaμ½FIFO0
CAN_FilterInitStructure.CAN_FilterActivation=ENABLE;//¼¤»î1yÂËÆ÷0

CAN_FilterInit(&CAN_FilterInitStructure); //ÂË2¨Æ÷3õê¼»ˉ

CAN_ITConfig(CAN1,CAN_IT_FMP0,ENABLE); //FIFO0ÏûÏ￠1òoÅÖD¶ÏÔêDí.

NVIC_InitStructure.NVIC_IRQChannel = USB_LP_CAN1_RX0_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 3;    // Ö÷óÅÏè¼¶Îa1
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;          // ′ÎóÅÏè¼¶Îa0
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);[/mw_shl_code]