基于51单片机的交通灯设计

#include<reg52.h> typedef unsigned int u16; typedef unsigned char u8; #define smg P0 sbit duan1=P2^6; sbit duan2=P2^7; sbit east_r=P1^6; sbit east_g=P1^7; sbit east_y=P3^3; sbit west_r=P1^0; sbit west_g=P1^1; sbit west_y=P1^2; sbit south_r=P3^4; sbit south_g=P3^5; sbit south_y=P3^6; sbit north_r=P1^3; sbit north_g=P1^4; sbit north_y=P1^5; sbit key1=P2^2; sbit key2=P2^3; sbit key3=P2^4; sbit key4=P2^5; sbit beep=P2^0; code xians[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90}; u16 i,s=0,a=20,b=30,w,count; { while(i--);} void Timer0Inti(void) { TMOD|=0X01; TH0=0X3c; TL0=0Xb0; ET0=1; EA=1; TR0=1; } void nb_g() { north_r=0;north_g=1; south_r=0;south_g=1; east_r=1;east_g=0; west_r=1;east_g=0; } void dx_g() { north_r=1;north_g=0; south_r=1;south_g=0; east_r=0;east_g=1; west_r=0;west_g=1; } void nb_y() { south_y=1;north_y=1;south_g=0;north_g=0; delay(20000); south_y=0;north_y=0;south_g=0;north_g=0; delay(20000); south_y=1;north_y=1;south_g=0;north_g=0; delay(20000); south_y=0;north_y=0;south_g=0;north_g=0; delay(20000); south_y=1;north_y=1;south_g=0;north_g=0; delay(20000); south_y=0;north_y=0;south_g=0;north_g=0; delay(20000); south_y=1;north_y=1;south_g=0;north_g=0; delay(20000); south_y=0;north_y=0;south_g=0;north_g=0; delay(20000); south_y=1;north_y=1;south_g=0;north_g=0; delay(20000); south_y=0;north_y=0;south_g=0;north_g=0; delay(20000); } void dx_y() { east_y=1;west_y=1;east_g=0;west_g=0; delay(20000); east_y=0;west_y=0;east_g=0;west_g=0; delay(20000); east_y=1;west_y=1;east_g=0;west_g=0; delay(20000); east_y=0;west_y=0;east_g=0;west_g=0; delay(20000); east_y=1;west_y=1;east_g=0;west_g=0; delay(20000); east_y=0;west_y=0;east_g=0;west_g=0; delay(20000); east_y=1;west_y=1;east_g=0;west_g=0; delay(20000); east_y=0;west_y=0;east_g=0;west_g=0; delay(20000); east_y=1;west_y=1;east_g=0;west_g=0; delay(20000); east_y=0;west_y=0;east_g=0;west_g=0; delay(20000); } void smg_xs() duan1=1; duan2=0; smg=xians[count/10]; Delay5ms(); duan1=0; duan2=1; smg=xians[count%10]; } void jinji() { east_r=1;east_g=1;east_y=1; west_r=1;west_g=1;west_y=1; south_r=1;south_g=1;south_y=1; north_r=1;north_g=1;north_y=1; } void led_csh() { east_r=0;east_g=0;east_y=0; west_r=0;west_g=0;west_y=0; south_r=0;south_g=0;south_y=0; north_r=0;north_g=0;north_y=0; } void key_scan() { if(key1==0) { delay(20); if(key1==0) {delay(50000); EA=0; s++; w=s%4; } if(key4==0) { delay(10); if(key4==0) { jinji();beep=0;delay(50000);beep=1;delay(50000);led_csh();key1=1; } } } void main() { u16 y=0; delay(10000); led_csh(); TimerInti(); beep=1; smg_xs(); while(1) { beep=0; key_scan(); if(w==2) if(key2==0) {delay(20000);a=a+1;if(a>60) a=30;} if(key3==0) {delay(20000);a=a-1;if(a==0) a=30;} duan1=1; duan2=0; smg=xians[a/10]; duan1=0; duan2=1; smg=xians[a%10]; a=a; } if(w==1) { if(key2==0) {delay(20000);b=b+1;if(b>60)b=30;} if(key3==0) {delay(20000);b=b-1;if(b==0)b=30;} duan1=1; duan2=0; smg=xians[b/10]; Delay5ms(); duan1=0; duan2=1; smg=xians[b%10]; Delay5ms(); b=b; } if(w==3) { jinji();beep=0;delay(500);beep=1;TR0=0;delay(50000);led_csh();TR0=1;key1=1; } if(w==0) TR0=1; if(y==0) { smg_xs(); dx_g(); if(count==0) {smg_xs(); delay(50000); dx_y();count=b;y=1;led_csh(); } } if(y==1) { smg_xs(); nb_g(); if(count==0) {smg_xs();delay(50000); nb_y();count=a;y=0;led_csh(); } } } } void Time0(void) interrupt 1 u16 s; TH0=0X3c; TL0=0xb0; s++; if(s==20) { count--;if(count==0)delay(50000); s=0;} }