51单片机控制交通灯原理图及C语言程序

Proteus仿真原理图：KeilC源程序：#include<reg51.h>#defineucharunsignedchar#defineuintunsignedintsbitRED_DONGXI=P1^0;//南北方向红灯亮sbitYELLOW_DONGXI=P1^1;//南北方向黄灯亮sbitRED_NANBEI=P1^3;//东西方向红灯亮sbitGREEN_DONGXI=P1^2;//南北方向绿灯亮sbitYELLOW_NANBEI=P1^4;//东西方向黄灯亮sbitGREEN_NANBEI=P1^5;//东西方向绿灯亮sbitDXweixuan1=P1^6;//南北方向数码管位选1sbitDXweixuan2=P1^7;//南北方向数码管位选2sbitNBweixuan1=P3^0;//东西方向数码管位选1sbitNBweixuan2=P3^1;//东西方向数码管位选2sbitL1=P3^5;sbitL2=P3^6;sbitL3=P3^7;uintaa,bai,shi,ge,bb;uintshi1,ge1,shi2,ge2;uintcodetable[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};uintcodetable1[]={0xfc,0x60,0xda,0xf2,0x66,0xb6,0xbe,0xe0,0xfe,0xf6};voiddelay(uintz);voidinit(uinta);voiddisplay(uintshi1,uintge1,uintshi2,uintge2);voidxtimer0();voidinit1();voidinit2();voidinit3();voidinit4();voidinit5();voidxint1();voidxint0();voidLED_ON();voidLED_OFF();voidmain(){ P0=0xFF; P1=0xFF; P2=0x00; P3=0xFF; EA=1; EX0=1; IT0=0; init1();while(1){ init2();//第2个状态 init3();//第3个状态 init4();//第4个状态 init5();//第5个状态 }}voidinit1()//第一个状态：东西、南北方向均亮红灯5S{ uinttemp; temp=5; TMOD=0x01; TH0=(65535-50000)/256; TL0=(65535-50000)%256; EA=1; ET0=1; TR0=1; while(1) { RED_DONGXI=0;//第一个状态东西、南北均亮红灯5S RED_NANBEI=0; GREEN_DONGXI=1; GREEN_NANBEI=1; YELLOW_DONGXI=1; YELLOW_NANBEI=1; if(aa==20)//定时20*50MS=1S { aa=0; temp--; } shi1=shi2=temp/10; ge1=ge2=temp%10; if(temp==0) { temp=5; break; } display(ge1,shi1,ge2,shi2); }}voidinit2()//第二个状态：东西亮红灯30S~5S、南北亮绿灯25~0S;{ uinttemp; temp=26; TMOD=0x01; TH0=(65535-50000)/256; TL0=(65535-50000)%256; EA=1; ET0=1; TR0=1; while(1) { RED_DONGXI=1; RED_NANBEI=0; GREEN_DONGXI=0; GREEN_NANBEI=1; YELLOW_DONGXI=1;//第二个状态：东西亮绿灯25S、南北亮红灯 YELLOW_NANBEI=1; if(aa==20)//定时20*50MS=1S { aa=0; temp--; shi1=(temp+5)/10; ge1=(temp+5)%10; shi2=temp/10; ge2=temp%10; if(temp==0) { temp=26; break; } } display(ge1,shi1,ge2,shi2); }}voidinit3()//第三个状态：东西绿灯变为黄灯闪5次、南北亮红灯5S{ uinttemp; temp=6; TMOD=0x01; TH0=(65535-50000)/256; TL0=(65535-50000)%256; EA=1; ET0=1; TR0=1; while(1) { RED_NANBEI=0; GREEN_DONGXI=1; if(aa==20)//定时20*50MS=1S { aa=0; temp--; YELLOW_DONGXI=~YELLOW_DONGXI; shi1=temp/10; shi2=shi1; ge1=temp%10; ge2=ge1; } if(temp==0) { temp=6; break; } display(ge1,shi1,ge2,shi2); }}voidinit4()//第四个状态：东西亮绿灯25~0S，南北方向亮红灯30~5S；{ uinttemp; temp=26; TMOD=0x01; TH0=(65535-50000)/256; TL0=(65535-50000)%256; EA=1; ET0=1; TR0=1; while(1) { RED_DONGXI=0; RED_NANBEI=1; YELLOW_DONGXI=1;//第一个状态东西、南北均亮红灯5S GREEN_NANBEI=0; if(aa==20) { aa=0; temp--; shi1=temp/10; shi2=(temp+5)/10; ge1=temp%10; ge2=(temp+5)%10; if(temp==0) { temp=26; break; } } display(ge1,shi1,ge2,shi2); }}voidinit5()//第五个状态：东西亮红灯、南北绿灯闪5次转亮黄灯5S{ uinttemp; temp=6; TMOD=0x01; TH0=(65535-50000)/256; TL0=(65535-50000)%256; EA=1; ET0=1; TR0=1; while(1) { RED_NANBEI=1; RED_DONGXI=0; GREEN_DONGXI=1; GREEN_NANBEI=1; if(aa==20) { aa=0; temp--; YELLOW_NANBEI=~YELLOW_NANBEI; shi1=temp/10; shi2=shi2; ge1=temp%10; ge2=ge1; if(temp==0) { temp=6; break; } } display(ge1,shi1,ge2,shi2); }}voiddisplay(uintshi1,uintge1,uintshi2,uintge2){ DXweixuan1=0; DXweixuan2=1; NBweixuan1=1; NBweixuan2=1; P0=table[ge1]; delay(5); DXweixuan1=1; DXweixuan2=0; NBweixuan1=1; NBweixuan2=1; P0=table[shi1]; delay(5); DXweixuan1=1; DXweixuan2=1; NBweixuan1=0; NBweixuan2=1; P0=table[ge2]; delay(5); DXweixuan1=1; DXweixuan2=1; NBweixuan1=1; NBweixuan2=0; P0=table[shi2]; delay(5);}voidxint0()interrupt0{ RED_NANBEI=0; RED_DONGXI=0; GREEN_NANBEI=1; GREEN_DONGXI=1; YELLOW_NANBEI=1; YELLOW_DONGXI=1; P0=0x00; NBweixuan1=0; NBweixuan2=0; DXweixuan1=0; DXweixuan2=0; delay(2); return; }voidxint1()interrupt2{ RED_NANBEI=1; RED_DONGXI=1; GREEN_NANBEI=0; GREEN_DONGXI=0; YELLOW_NANBEI=1; YELLOW_DONGXI=1; P0=0x00; NBweixuan1=0;