#ifndef _usart3_H
#define _usart3_H
#include "bsp.h"
#include "general_type.h"
#include "stm32l1xx_usart.h"  

#define USART3_MAX_RECV_LEN		256					//最大接收缓存字节数
#define USART3_MAX_SEND_LEN		100				//最大发送缓存字节数



extern unsigned char  USART3_RX_BUF[USART3_MAX_RECV_LEN]; 		//接收缓冲,最大USART3_MAX_RECV_LEN字节
extern unsigned char  USART3_TX_BUF[USART3_MAX_SEND_LEN]; 		//发送缓冲,最大USART3_MAX_SEND_LEN字节


void USART3_Configuration(u32 baund); 
void u3_printf(char* fmt,...);
void Usart3_ReceiveBuff_Clear(void);


#endif