交通灯 51单片机+proteus仿真

ID:955647 · 发表于 2021-7-28 20:35

#include <reg51.h>
#define uchar unsigned char
#define uint unsigned int
sbit smg1 =P1^1;
sbit smg2 =P1^0; //定义共阳极数码管引脚
sbit red2=P1^5;
sbit yellow2=P1^6;
sbit green2=P1^7; //东西路红绿灯
sbit red1=P1^2;
sbit yellow1=P1^3;
sbit green1=P1^4; //南北路红路灯
sbit k1=P3^2;  //南北禁行
sbit k2=P3^3;  //东西禁行
sbit k3=P3^4; //全部禁行
sbit k4=P3^5; //红路灯时间减
sbit k5=P3^6; //红路灯时间加
uchar code s7_table[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};  //共阳极数码管键选
uint time=0;
uchar i;
void delay_ms(uchar z) // 延时
{
uchar i,j;
for(i=z;i>0;i--)
      for(j=110;j>0;j--);
}
void display_time(uchar num) //显示倒计时
{
smg1=0;
P2=s7_table[num/10];
delay_ms(2);
P2=0;
smg1=1;

smg2=0;
P2=s7_table[num%10];
delay_ms(2);
P2=0;
smg2=1;
}
void keypro()
{

   if(k1 == 0)  //nan  bei ban
{
   delay_ms(10);
   if(k1 == 0)
{
red1=0;
yellow1=1;
green1=1;
red2=1;
yellow2=1;
green2=0;
}
while(!k1);
}
   if(k2 ==0 )    // dong xi ban
   {
   delay_ms(10);
   if(k2 == 0)
   {
   red1=1;
yellow1=1;
green1=0;
red2=0;
yellow2=1;
green2=1;
   }
   while(!k2);
   }
   if(k3==0) // all ban
   {
   delay_ms(10);
   if(k3 == 0)
   {
   red1=0;
yellow1=1;
green1=1;
red2=0;
yellow2=1;
green2=1;
   }
   while(!k3);
}
   if(k4==0) // --
   {
   delay_ms(10);
   if(k4==0)
   {
   time=time+1;
   }
   while(!k4);
   }
   if(k5==0)  // ++
   {
   delay_ms(10);
   if(k5==0)
   {
   time=time-1;
   }
   while(!k5);
   }
}
void main()
{
   EA=1;
ET0=1;
TMOD=0X01;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
TR0=1;
while(1)
{
   keypro();
if(time<60)
{
display_time(61-time);
red2=0;
green2=1;
yellow2=1;
red1=1;
green1=0;
yellow1=1;
}

else if(time>60&&time<64  )
{
     display_time(63-time);
red1=1;
yellow1=0;
green1=1;
     red2=1;
      yellow2=0;
green2=1;
}
else if(time<84&&time>64)
{
display_time(84-time);
red2=1;
green2=0;
red1=0;
green1=1;
yellow2=1;
yellow1=1;
}
if(time==84)
time=0;
}
}

void_int0_isr() interrupt 1
{
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
i++;
if(i==20)
{
i=0;
++time;
}
}

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