CAN实验（入门级）如果开发者对于本文件有需要的可以参考，
/**
******************************************************************************
* @file main.c
* @author MCD Application Team
* @version V1.0.0
* @date 18-April-2011
* @brief Main program body
******************************************************************************
* @attention
*
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*
*
© COPYRIGHT 2011 STMicroelectronics******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f4xx.h"
#include "usart.h"
#include
#ifdef __GNUC__
/* With GCC/RAISONANCE, small printf (option LD Linker->Libraries->Small printf
set to 'Yes') calls __io_putchar() */
#define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
#else
#define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)
#endif /* __GNUC__ */
#define USER_KEY_Port GPIOF
#define USER_KEY_Pin GPIO_Pin_10
#define USER_KEY_RCC_AHBPeriph RCC_AHB1Periph_GPIOF
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
CAN_InitTypeDef CAN_InitStructure;
CAN_FilterInitTypeDef CAN_FilterInitStructure;
CanTxMsg TxMessage;
uint8_t KeyNumber = 0x0;
/* Private variables ---------------------------------------------------------*/
uint16_t CAN1_ID;
uint8_t CAN1_DATA0,CAN1_DATA1,CAN1_DATA2,CAN1_DATA3,CAN1_DATA4,CAN1_DATA5,CAN1_DATA6,CAN1_DATA7;
uint16_t CAN2_ID;
uint8_t CAN2_DATA0,CAN2_DATA1,CAN2_DATA2,CAN2_DATA3,CAN2_DATA4,CAN2_DATA5,CAN2_DATA6,CAN2_DATA7;
__IO uint8_t Can1Flag,Can2Flag;
void CAN1_Config(void);
void CAN2_Config(void);
void NVIC_Config(void);
void Can1WriteData(uint16_t ID);
void Can2WriteData(uint16_t ID);
void Key_Config(void);
/* Private functions ---------------------------------------------------------*/
/**
* @brief Main program.
* @param None
* @retval None。
