stm32 can如何测试？求大神指点

只看该作者 · 2017-3-28 17:16

u8 CAN_Mode_Init(u8 tsjw,u8 tbs2,u8 tbs1,u16 brp,u8 mode){

   GPIO_InitTypeDef GPIO_InitStructure;
   CAN_InitTypeDef       CAN_InitStructure;
   CAN_FilterInitTypeDef  CAN_FilterInitStructure;
#if CAN_RX0_INT_ENABLE
      NVIC_InitTypeDef  NVIC_InitStructure;
#endif

   RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO | RCC_APB2Periph_GPIOB, ENABLE);
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN1, ENABLE);

//CAN_TX
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
//CAN_RX
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_Init(GPIOB, &GPIO_InitStructure);

   GPIO_PinRemapConfig(GPIO_Remap1_CAN1, ENABLE);

   //CANµ¥ÔªÉèÖÃ
CAN_InitStructure.CAN_TTCM=DISABLE;
CAN_InitStructure.CAN_ABOM=DISABLE;
    CAN_InitStructure.CAN_AWUM=DISABLE;
    CAN_InitStructure.CAN_NART=ENABLE; //
    CAN_InitStructure.CAN_RFLM=DISABLE;
    CAN_InitStructure.CAN_TXFP=DISABLE;
    CAN_InitStructure.CAN_Mode= mode;
    //ÉèÖÃ²¨ÌØÂÊ
    CAN_InitStructure.CAN_SJW=tsjw;
    CAN_InitStructure.CAN_BS1=tbs1;
    CAN_InitStructure.CAN_BS2=tbs2;
    CAN_InitStructure.CAN_Prescaler=brp;
    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);

#if CAN_RX0_INT_ENABLE //#define CAN_RX0_INT_ENABLE  1

CAN_ITConfig(CAN1,CAN_IT_FMP0,ENABLE);
//CAN_ITConfig(CAN1,CAN_IT_FMP1,ENABLE);
    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);

#endif
return 0;
}

只看该作者 · 2017-3-28 17:17

void USB_LP_CAN1_RX0_IRQHandler(void){ //USB_LP_CAN1_RX0_IRQHandler CAN1_RX1_IRQHandler
int i=0;
CanRxMsg RxMessage;
CAN_Receive(CAN1, CAN_FIFO0, &RxMessage);
for(i=0;i<8;i++){

re_data[i]=RxMessage.Data[i];
}
printf("receive£¡\n");
}
int main(void)
{
int k;
uart1_init(9600); //´®¿Ú³õÊ¼»¯Îª9600
k=CAN_Mode_Init(1,2,1,9,0);//CAN³õÊ¼»¯,²¨ÌØÂÊ36/(1+2+1)*9 = 1M
printf("k=%d\n",k);
while(1)
{
if(k==0){
Can_Send_Msg(canbuf,8);
// k++;
//delay_ms(1000);
Can_Receive_Msg(re_data);
}
}
}

只看该作者 · 2017-3-28 17:18

void USB_LP_CAN1_RX0_IRQHandler(void){ //USB_LP_CAN1_RX0_IRQHandler CAN1_RX1_IRQHandler
int i=0;
CanRxMsg RxMessage;
CAN_Receive(CAN1, CAN_FIFO0, &RxMessage);
for(i=0;i<8;i++){

re_data[i]=RxMessage.Data[i];
}
printf("receive£¡\n");
}

void USB_LP_CAN1_RX0_IRQHandler(void){ //USB_LP_CAN1_RX0_IRQHandler CAN1_RX1_IRQHandler
int i=0;
CanRxMsg RxMessage;
CAN_Receive(CAN1, CAN_FIFO0, &RxMessage);
for(i=0;i<8;i++){

re_data[i]=RxMessage.Data[i];
}
printf("receive£¡\n");
}
int main(void)
{
int k;
uart1_init(9600); //´®¿Ú³õÊ¼»¯Îª9600
k=CAN_Mode_Init(1,2,1,9,0);//CAN³õÊ¼»¯,²¨ÌØÂÊ36/(1+2+1)*9 = 1M
printf("k=%d\n",k);
while(1)
{
if(k==0){
Can_Send_Msg(canbuf,8);
// k++;
//delay_ms(1000);
Can_Receive_Msg(re_data);
}
}
}