现在问题是CAN进不了中断，以下是我的CAN部分程序
中断部分
void NVIC_Configuration(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
#ifdef VECT_TAB_RAM
/* Set the Vector Table base location at 0x20000000 */
NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
#else /* VECT_TAB_FLASH */
/* Set the Vector Table base location at 0x08000000 */
NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
#endif
/* enabling interrupt */
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);
}
中断处理部分
void USB_LP_CAN_RX0_IRQHandler(void)
{
CanRxMsg RxMessage;
RxMessage.StdId=0x00;
RxMessage.IDE=0;
RxMessage.DLC=0;
RxMessage.FMI=0;
RxMessage.Data[0]=0x00;
RxMessage.Data[1]=0x00;
CAN_Receive(CAN_FIFO0, &RxMessage);
//CAN_ClearITPendingBit(CAN_IT_FMP0);
if((RxMessage.StdId==0x11) && (RxMessage.IDE==CAN_ID_STD))//&& (RxMessage.DLC==2)&& ((RxMessage.Data[1]|RxMessage.Data[0]<<8)==0xCAFE))
{
ret = 1;
CAN_Data[0] = RxMessage.Data[0];
CAN_Data[1] = RxMessage.Data[1];
}
else
{
ret = 0;
}
}
CAN部分
/* 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_8tq;
CAN_InitStructure.CAN_BS2=CAN_BS2_7tq;
CAN_InitStructure.CAN_Prescaler=1;
CAN_Init(&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=CAN_FIFO0;
CAN_FilterInitStructure.CAN_FilterActivation=ENABLE;
CAN_FilterInit(&CAN_FilterInitStructure);
/* CAN FIFO0 message pending interrupt enable */
CAN_ITConfig(CAN_IT_FMP0, ENABLE);
/* initialize the value that will be returned */
ret = 0xFF;
/* receive message with interrupt handling */
i=0;
while((ret == 0xFF) && (i < 0xFFF))
{
i++;
}
if (i == 0xFFF)
{
ret=0;
}
/* disable interrupt handling */
CAN_ITConfig(CAN_IT_FMP0, DISABLE);
return (TestStatus)ret;
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