51单片机双机通信

//两个单片机通讯，使用中断法#include <reg51.h>#define uchar unsigned char#define uint unsigned int#define key_port P1#define dis_port P2void main (void){	uchar key_in=0xff;	SCON=0x50; //MODER1,REN=1;	TMOD=0x20; //TIMER1 MODER2;	TH1=0xf3;  //bode=2400	TL1=0xf3;	ET1=1;	TR1=1;	EA=1;	ES=1;	while(1)	{				if (key_in != key_port)			{				key_in = key_port;				SBUF=key_in;			}	}}void get_disp (void) interrupt 4 using 0{	if (RI)			//如果是串口输入引起中断			{				dis_port = SBUF;				RI=0;			}	 else TI=0;		//否则就是串口输出引起的中断}