不多說了，直接上代碼
主函數：main.c
#include "main.h"
int main(void)
{
SystemInit();
can_init();
while(1)
{
}
}
can模塊配置的子函數：can.c
#include "can.h"
void can_init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
CAN_InitTypeDef CAN_InitStructure;
CAN_FilterInitTypeDef CAN_FilterInitStructure;
//NVIC_Configuration
NVIC_InitStructure.NVIC_IRQChannel = USB_LP_CAN1_RX0_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; // 主優先級為0
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; // 次優先級為0
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN1, ENABLE);
//Configure CAN pin: RX
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_Init(GPIOA, &GPIO_InitStructure);
//Configure CAN pin: TX
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
CAN_DeInit(CAN1);
CAN_StructInit(&CAN_InitStructure);
CAN_InitStructure.CAN_TTCM=DISABLE; // 時間觸發通信禁止
CAN_InitStructure.CAN_ABOM=DISABLE; // 離線退出是在中斷置位清0后退出
CAN_InitStructure.CAN_AWUM=DISABLE; // 自動喚醒模式：清零sleep
CAN_InitStructure.CAN_NART=DISABLE; // 自動重新傳送豹紋，知道發送成功
CAN_InitStructure.CAN_RFLM=DISABLE; // FIFO沒有鎖定，新報文覆蓋舊報文
CAN_InitStructure.CAN_TXFP=DISABLE; // 發送報文優先級確定：標志符
CAN_InitStructure.CAN_Mode=CAN_Mode_Normal; // 模式: CAN_Mode_Normal / CAN_Mode_LoopBack
CAN_InitStructure.CAN_SJW=CAN_SJW_1tq; // 1tq、BS1、BS2的值跟波特率有關
CAN_InitStructure.CAN_BS1=CAN_BS1_8tq;
CAN_InitStructure.CAN_BS2=CAN_BS2_7tq;
CAN_InitStructure.CAN_Prescaler=9; // 分頻系數為1
CAN_Init(CAN1, &CAN_InitStructure); // 初始化CAN1
CAN_FilterInitStructure.CAN_FilterNumber=0;
CAN_FilterInitStructure.CAN_FilterMode=CAN_FilterMode_IdList;
CAN_FilterInitStructure.CAN_FilterScale=CAN_FilterScale_32bit;
CAN_FilterInitStructure.CAN_FilterIdHigh=0x014 << 5;
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_ITConfig(CAN1,CAN_IT_FMP0, ENABLE); //中斷使能
}
void USB_LP_CAN1_RX0_IRQHandler(void)
{
CanRxMsg RxMessage;
RxMessage.StdId=0x00;
RxMessage.ExtId=0x00;
RxMessage.IDE=0;
RxMessage.DLC=0;
RxMessage.FMI=0;
RxMessage.Data[0]=0x00;
RxMessage.Data[1]=0x00;
CAN_Receive(CAN1, CAN_FIFO0, &RxMessage);
}
主函數的頭文件：main.h
#ifndef _MAIN_H
#define _MAIN_H
#include "stm32f10x.h"
#include "can.h"
#endif
子函數的頭文件：can.h
#ifndef _CAN_H
#define _CAN_H
#include "main.h"
void can_init(void);
#endif
不明白的地方歡迎提問