自己做的交通灯，内含单片机程序源码，仿真图，PCB源文件 -

/* 以单片机位核心设计一个交通灯，要求单片机频率设为11.0592MHz。
分为主干道和次干道。主干道直行方向绿灯亮通行50s（后三秒直行方向绿灯闪烁），接下来三秒直行方向黄灯闪烁，然后主干道直行方向灯变红灯，
左拐方向灯变绿灯，左拐持续时间为20s（后三秒左拐绿灯闪烁），接下来三秒左拐黄灯闪烁，然后主干道直行灯和左拐灯变红灯，同时次干道由红灯
变成绿灯，直行时间持续20s，左拐持续时间15s，重复与主干道的类似的过程，然后再重复上述过程并持续下去，直行和左拐用LED点阵显示，剩余
时间用LED数码管显示。还有突发事件应急处理的按键，当按下时，某一路通车，其余路变成红灯（主干道和支干道共用红黄绿灯）。
P1.0~P1.5 LED灯接口
P0.0~P0.7和P2.0,P2.1 两位一体共阳数码管接口
P3.0~P3.3 两片74HC595接口
P1.6,P1.7,P3.6,P3.7 按键接口*/
#include<reg52.h>
#include"config.h"
#include"uart.h"
#include<intrins.h>
#define NOP() _nop_()
/*灯代码定义*/
sbit RE_ST=P1^0;
sbit YE_ST=P1^1;
sbit GR_ST=P1^2;
sbit RE_LE=P1^3;
sbit YE_LE=P1^4;
sbit GR_LE=P1^5;
//突发事件应急处理按键
sbit sw1 = P1^6;
sbit sw2 = P1^7;
sbit sw3 = P3^6;
sbit sw4 = P3^7;
bit flag=1;
bit flag_l=1; //直行状态标志位
bit flag_s=1; //左拐状态标志位
//74HC595管脚定义
sbit MOSIO1=P3^1;
sbit R_CLK1=P3^0;
sbit S_CLK1=P3^2;
unsigned int i;
unsigned int a,b,d;
unsigned char DSY_BUFF[] = {0,0};
unsigned char code DSY_CODE[] = {0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};//数码管段码定义
unsigned char code tab[]={0xE7,0xC3,0x81,0x81,0xE7,0xE7,0xE7,0xE7}; //直行箭头段码定义
unsigned char code tab3[]={0xFF,0xEF,0xCF,0x00,0x00,0xCF,0xEF,0xFF}; // 左拐箭头段码定义
unsigned char code tab1[]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};
unsigned char tab2[]={0,0,0,0,0,0,0,0};
void delay(unsigned int x);
void HC595SendData(unsigned int SendVal);
void HC595SendData1(unsigned int SendVal1);
void SCan(); //按键调用
void main()
{
TMOD = 0X11;
ET0 = 1;
TH0 = (65536-50000)/256; //50ms
TL0 = (65536-50000)%256;
TH1=(65536-2000)/256;
TL1=(65536-2000)%256; //1.0ms
ET1=1; //定时器/计数器1中断允许
EA=1; //总中断允许
TR1=1;
TR0 = 1;
while(1)
{
if(flag)
{
if(b<=50)
flag_l=0; //主干道直行绿灯亮50s
GR_ST =0;
if((b>=48)&(b<=50)&((a==10)|(a==0))) //主干道直行绿灯3秒闪
{
GR_ST=!GR_ST;
delay(400);
flag_l=0;
}
if((b>=51)&(b<=53)&((a==10)|(a==0))) //主干道直行黄灯3秒闪
{
GR_ST=1;
YE_ST=!YE_ST;
delay(300);
flag_l=0;
}
if((b>=54)&(b<=73)) //主干道左拐绿灯亮20s
{
GR_ST=1;
flag_l=1;
flag_s=0;
YE_ST = 1;
delay(500);
RE_ST = 0;
GR_LE= 0;
}
if((b>=71)&(b<=73)&((a==10)|(a==0))) //主干道左拐绿灯3秒闪
{
GR_LE=!GR_LE;
delay(300);
flag_s=0;
}
if((b>=74)&(b<=76)&((a==10)|(a==0))) //主干道左拐黄灯3秒闪
{
GR_LE=1;
YE_LE= !YE_LE;
delay(300);
flag_s=0;
}
if((b>=77)&(b<=93)) //主干道左拐红灯和直行红灯变亮，次干道直行绿灯变亮持续20s
{
RE_ST=1;
flag_s=1;
RE_LE=0;
YE_LE = 1;
flag_l=0;
GR_ST=0;
} //次干道直行绿灯3秒闪烁
if((b >=94)&(b<=96)&((a==10)|(a==0)))
{
GR_ST=!GR_ST;
delay(400);
flag_l=0;
}
if((b>=97)&(b<=99)&((a==10)|(a==0))) //次干道直行黄灯3秒闪烁
{
GR_ST=1;
YE_ST=!YE_ST;
delay(300);
flag_l=0;
}
if((b>=100)&(b<=111)) //次干道直行红灯亮，左拐绿灯亮15s
{
flag_l=1;
GR_ST=1;
flag_s=0;
YE_ST = 1;
delay(500);
RE_ST = 0;
GR_LE= 0;
}
if((b>=112)&(b<=114)&((a==10)|(a==0))) //次干道左拐绿灯3秒闪
{
GR_LE=!GR_LE;
delay(300);
flag_s=0;
}
if((b>=115)&(b<=117)&((a==10)|(a==0))) //次干道左拐黄灯3秒闪
{
GR_LE=1;
YE_LE= !YE_LE;
delay(200);
flag_s=0;
}
if(b>=118) //次干道左拐红灯和直行红灯变亮，主干道直行绿灯变亮持续50s
{
flag_s=1;
flag_l=0;
b=0;
RE_ST=1;
YE_LE= 1;
RE_LE=0;
GR_ST=0;
}
}
SCan();
}
}
void SCan()
{
if(sw1==0) //按下主干道直行方向通车,其余方向变红灯
{
delay(20);
if(sw1==0)
{
while(!sw1);
delay(20);
GR_ST=0;
RE_LE=0;
GR_LE=1;
RE_LE=1;
}
}
if(sw2==0) //按下主干道左拐方向通车,其余方向变红灯
{
delay(20);
if(sw2==0)
{
while(!sw2);
delay(20);
GR_LE=0;
RE_ST=0;
GR_ST=1;
RE_LE=1;
}
}
if(sw3==0) //按下次干道直行方向通车,其余方向变红灯
{
delay(20);
if(sw3==0)
{
while(!sw3);
delay(20);
GR_ST=0;
RE_LE=0;
GR_LE=1;
RE_ST=1;
}
}
if(sw4==0) //按下次干道左拐方向通车,其余方向变红灯
{
delay(20);
if(sw4==0)
{
while(!sw4);
delay(20);
flag=0;
GR_LE=0;
RE_ST=0;
GR_ST=1;
RE_LE=1;
}
}
}
void OST() interrupt 1
{
TH0 = (65536-50000)/256;
TL0 = (65536-50000)%256;
a++;
if(a==20) //1s
{
a = 0;
b++;
if(b<=50)
{
d = 50-b;
}
if((b>=54)&(b<=73))
{
d=73-b;
}
if((b>=77)&(b<=96))
{
d=96-b;
}
if((b>=100)&(b<=114))
{
d=114-b;
}
}
if(b==0)
d=50;
if(b==53)
d=20;
if(b==76)
d=20;
if(b==99)
d = 15;
DSY_BUFF[0] = d/10;
DSY_BUFF[1] = d%10;
}
void Display_Scan() interrupt 3 //显示程序
{
unsigned char z;
TH1=(65536-2000)/256;
TL1=(65536-2000)%256;
P2=0x01<<z;
P0 = DSY_CODE[DSY_BUFF[z]];
z=(++z)%2;
if(!flag_l) //LED点阵直行箭头显示
{
flag_s=1;
tab2[i] =~tab[i];
SW_74HC5951 = 0;
UARTNO(tab1+i,1);
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