【51单片机C语言+Proteus仿真实例】单片机之间双向通信.zip

/*************** writer:shopping.w ******************/ #include <reg52.h> #define uint unsigned int #define uchar unsigned char sbit LED1 = P1^0; sbit LED2 = P1^3; sbit K1 = P1^7; uchar Operation_NO = 0; uchar code DSY_CODE[]= { 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f }; void Delay(uint x) { uchar i; while(x--) { for(i=0;i<120;i++); } } void putc_to_SerialPort(uchar c) { SBUF = c; while(TI == 0); TI = 0; } void main() { LED1=LED2=1; P0 = 0x00; SCON = 0x50; TMOD = 0x20; PCON = 0x00; TH1 = 0xfd; TL1 = 0xfd; TI = 0; RI = 0; TR1 = 1; IE = 0x90; while(1) { Delay(100); if(K1 == 0) { while(K1==0); Operation_NO=(Operation_NO+1)%4; switch(Operation_NO) { case 0: putc_to_SerialPort('X'); LED1=LED2=1; break; case 1: putc_to_SerialPort('A'); LED1=0;LED2=1;break; case 2: putc_to_SerialPort('B'); LED2=0;LED1=1;break; case 3: putc_to_SerialPort('C'); LED1=0;LED2=0;break; } } } } void Serial_INT() interrupt 4 { if(RI) { RI = 0; if(SBUF>=0&&SBUF<=9) P0 = DSY_CODE[SBUF]; else P0 = 0x00; } }