基于单片机的十字路口交通灯课程设计.zip

#include<reg51.h> #define u8 unsigned char #define u16 unsigned int sbit start = P1^4; //开始按钮 sbit northred=P2^0; //北面路口红灯 sbit northyellow=P2^1; //北面路口黄灯 sbit northgreen=P2^2; //北面路口绿灯 sbit southgreen=P2^3; //南面路口绿灯 sbit southyellow=P2^4; //南面路口黄灯 sbit southred=P2^5; //南面路口红灯 sbit westred=P2^6; //西面路口红灯 sbit westyellow=P2^7; //西面路口黄灯 sbit westgreen=P1^0; //西面路口绿灯 sbit eastgreen=P1^1; //东面路口绿灯 sbit eastyellow=P1^2; //东面路口黄灯 sbit eastred=P1^3; //东面路口红灯 sbit highone = P3^0; //选择数码管接通标志位 sbit lowone = P3^1; //选择数码管接通标志位 sbit hightwo = P3^2; //选择数码管接通标志位 sbit lowtwo = P3^3; //选择数码管接通标志位 u8 code number[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f}; //共阴极 u8 xianshi[]={0x3f,0x3f,0x3f,0x3f}; u8 Tpointer=146; //时间指针。 u8 done = 0; //开始标志 u16 i; void delay(u16 h) //延时函数 { while(h--); } void shujuchuli() //时间数据处理函数 { if(Tpointer>63) { xianshi[0]=number[(Tpointer-63)/10]; xianshi[1]=number[(Tpointer-63)%10]; if(Tpointer>66) { xianshi[2]=number[(Tpointer-66)/10]; xianshi[3]=number[(Tpointer-66)%10]; } if((Tpointer>63)&&(Tpointer<=66) ) { xianshi[2]=number[(Tpointer-63)/10]; xianshi[3]=number[(Tpointer-63)%10]; } } if(Tpointer<=63) { xianshi[2]=number[Tpointer/10]; xianshi[3]=number[Tpointer%10]; if(Tpointer>3) { xianshi[0]=number[(Tpointer-3)/10]; xianshi[1]=number[(Tpointer-3)%10]; } if((Tpointer>0)&&(Tpointer<=3)) { xianshi[0]=number[Tpointer/10]; xianshi[1]=number[Tpointer%10]; } } } void xuanze() //选择函数函数 { //选择标志位接通对应的数码管 u8 k; for(k=0;k<4;k++) { switch(k) { case(0): lowone=1;hightwo=1;lowtwo=1;highone=0;break; case(1): highone=1;hightwo=1;lowtwo=1;lowone=0;break; case(2): highone=1;lowone=1;lowtwo=1;hightwo=0;break; case(3): highone=1;lowone=1;hightwo=1;lowtwo=0;break; } P0=xianshi[k]; delay(500); } } void checkstartkey() //检测开始按钮函数 { if(start==0) { delay(1000); //消抖 if(start==0) { done=1; } while(!start) { xuanze(); } } } void InitTimer0() //定时器函数 { TMOD = 0x01; //定时器T0为模式1 TH0 = 0xd8; //设置定时器初值 TL0 = 0xef; EA = 1; //总中断允许 ET0 = 1; } void main() //主函数 { InitTimer0(); while(1) { shujuchuli(); delay(100); xuanze(); checkstartkey(); if(done==1) { TR0 = 1; if ((Tpointer>63)&&(Tpointer<=146)) { westred=1; eastred=1; southgreen=1; southyellow=1; northgreen=1; northyellow=1; southred=0; northred=0; if(Tpointer>66) { westgreen=0; eastgreen=0; } else { westgreen=1; eastgreen=1; westyellow=0; eastyellow=0; } } if ((Tpointer>0)&&(Tpointer<=63)) { southred=1; northred=1; westgreen=1; westyellow=1; eastgreen=1; eastyellow=1; westred=0; eastred=0; if(Tpointer>3) { southgreen=0; northgreen=0; } else { southgreen=1; northgreen=1; southyellow=0; northyellow=0; } } } } } void Timer0() interrupt 1 //定时器中断 { TH0 = 0xd8; TL0 = 0xef; i++; if(i==100) { i=0; Tpointer--; if(Tpointer==0) { Tpointer=146; } } }