单片机数码管系统交通灯程序 -

/***********************************************************
名称：基于AT89S52数码管系统交通灯程序
要求：红禄灯灯电路，数码管电路，独立式键盘电路，蜂鸣器电路，统一交通灯设计
作者：黄*
时间：2019年9月1日
电路描述：S1到S5一键一功能;S1开始，S2暂停，S3调整时间加，S4调整时间减，S5进入紧急状态；
************************************************************/
#include<reg52.h>
#include<intrins.h>
#define uint unsigned int
#define uchar unsigned char
sbit S1=P1^0; //开始运行按键
sbit S2=P1^1; //暂停运行按键
sbit S3=P1^2; //调整时间加按键
sbit S4=P1^3; //调整时间减按键
sbit S5=P1^4; //进入紧急状态按键
sbit red1=P3^2; //甲通道红灯
sbit green1=P3^3; //甲通道禄灯
sbit yellow1=P3^4; //甲通道黄灯
sbit red2=P3^5; //乙通道红灯
sbit green2=P3^6; //乙通道禄灯
sbit yellow2=P3^7; //乙通道黄灯
sbit beep=P3^1; //蜂鸣器报警控制端
uchar code discode[]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90}; //送段码0-9
uchar code discode1[]={0x92,0x92,0x88,0x8C,0x8C,0xC0,0x87,0x92}; //送段码STOP PASS
uchar disbitcode[]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80}; //送位码
uchar disbuf[2]={0,0}; //显示缓冲区
uchar cent,second1=60,second=60,second2=30,a;
/*函数申明*/
void display(void);
void ini(void);
void t0(void);
void stop(void);
/*************延时程序**************/
void delay(uint m)
{
while(--m);
}
/*************初始化程序**************/
void ini(void)
{
TMOD=0x01;
TH0=(65536-46082)/256;
TL0=(65536-46082)%256;
ET0=1;
EA=1;
}
/*************显示紧急通道程序**************/
void stop(void)
{
uchar i;
for(i=0;i<8;i++)
{
P0=discode1[i];
P2=disbitcode[i];
delay(100);
P2=0X00;
}
}
/*************显示程序**************/
void display(void)
{
uchar i;
for(i=0;i<2;i++)
{
P0=discode[disbuf[i]];
P2=disbitcode[i];
delay(100);
P2=0X00;
}
}
/*************中断程序**************/
void t0(void) interrupt 1 using 0 //用第0组寄存器
{
cent++;
if(cent==20)
{
cent=0;
second--;
if(second==0&&a==0)
{
second=3;
a=1;
}
if(second==0&&a==1)
{
second=second2;
a=2;
}
if(second==0&&a==2)
{
second=3;
a=3;
}
if(second==0&&a==3)
{
second=second1;
a=0;
}
}
disbuf[0]=second%10; //更新显示缓冲区
disbuf[1]=second/10;
TH0=(65536-46082)/256;
TL0=(65536-46082)%256;
}
/*************键扫描程序**************/
uchar keyscan()
{
uchar tmp; //列号，行号
P1=0xff; //发全行0扫描码
if((P1&0xff)!=0xff) //若有键按下
{
delay(1000); // 延时去抖
if((P1&0xff)!=0xff) //有键按下
{
tmp=(P1&0xff);
do{}while((P1&0xff)!=0xff);
tmp=~tmp;
return (tmp); //还回键值
}
}
return (0); //无键按下,还回0
}
/*************主程序**************/
void main(void)
{
uchar v,b=0;
ini();
v=keyscan();
while(v==0)
{
P0=0X0C;
P2=0X01;
P3=0XFF;
v=keyscan();
}
if(v==1||v==16)
{
while(1)
{
switch(v)
{
case 1:
TR0=1;
while(v==1||v==0)
{
if(a==0)
{
loop1: yellow2=1;
red1=1;
green1=0;
red2=0;
}
if(a==1)
{
yellow1=0;
green1=1;
delay(100);
yellow1=1;
}
if(a==2)
{
loop2: red1=0;
red2=1;
green2=0;
yellow1=1;
}
if(a==3)
{
green2=1;
yellow2=0;
delay(100);
yellow2=1;
}
display();
v=keyscan(); //调键扫描程序
}
break;
case 2:
while(v==2||v==0)
{
TR0=0;
display();
v=keyscan();
}
break;
case 4:
b++;
v=keyscan();
break;
case 8:
if(b%2==0)
{
second1++;
if(second1==100)
second1=0;
disbuf[0]=second1%10; //更新显示缓冲区
disbuf[1]=second1/10;
}
else
{
second2++;
if(second2==100)
second2=0;
disbuf[0]=second2%10; //更新显示缓冲区
disbuf[1]=second2/10;
}
display();
v=keyscan();
break;
case 16:
if(b%2==0)
{
second1--;
if(second1==0)
second1=99;
disbuf[0]=second1%10; //更新显示缓冲区
disbuf[1]=second1/10;
}
else
{
second2--;
if(second2==0)
second2=99;
disbuf[0]=second2%10; //更新显示缓冲区
disbuf[1]=second2/10;
}
display();
v=keyscan();
break;
case 32:
while(v==32||v==0) /*显示八个8*/
{
P3=0XFF;
red1=0;
red2=0;
beep=0;
stop();
delay(10000);
beep=1;
v=keyscan(); //调键扫描程序
}
break;
case 64:
second=60;
P3=0XFF;
a=0;
goto loop1;
break;
case 128:
second=30;
P3=0XFF;
a=2;
goto loop2;
break;
}
display();
v=keyscan();
}
}
}

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