十字路*通灯控制2 设计任务：利用单片机设计一个十字路*通灯控制器 设计要求： 利用单片机的定

发布网友 发布时间：2022-04-23 00:45

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热心网友 时间：2023-10-09 12:39

#include<reg51.h>
#define uchar unsigned char
#define uint unsigned int
sbit RED_A=P3^0; //东西向指示灯
sbit YELLOW_A=P3^1;
sbit GREEN_A=P3^2;
sbit RED_B=P3^3; //南北向指示灯
sbit YELLOW_B=P3^4;
sbit GREEN_B=P3^5;
sbit KEY1=P1^0;
sbit KEY2=P1^1;
sbit KEY3=P1^2;
//延时倍数，闪烁次数，操作类型变量
uchar Flash_Count=0,Operation_Type=1,LEDsng,LEDsns,LEDewg,LEDews,discnt;
uint Time_Count=0,time;
uchar ledtab[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e,0xff};
void displaysn()
{
 LEDsng=((time-Time_Count)/20)%10;
 LEDsns=((time-Time_Count)/20)/10;
 LEDewg=0x10;
 LEDews=0x10;
}
void displayew()
{
 LEDewg=((time-Time_Count)/20)%10;
 LEDews=((time-Time_Count)/20)/10;
 LEDsng=0x10;
 LEDsns=0x10;
}
//定时器0 中断函数
void T0_INT() interrupt 1
{
 TH0=(65536-50000)/256;
 TL0=(65536-50000)%256;
 switch(Operation_Type)
 {
 case 1: //东西向绿灯与南北向红灯亮
  if((Time_Count%20)==0)displayew();
  RED_A=0;YELLOW_A=0;GREEN_A=1;
  RED_B=1;YELLOW_B=0;GREEN_B=0;
  if(++Time_Count!=time) return;
  Time_Count=0;
  Operation_Type=2;
  break;
 case 2: //东西向黄灯开始闪烁，绿灯关闭
 LEDewg=0x0;
 LEDews=0x0;
  if(++Time_Count!=8) return;
  Time_Count=0;
  YELLOW_A=~YELLOW_A;GREEN_A=0;
  if(++Flash_Count!=6) return; //闪烁
  Flash_Count=0;
  Operation_Type=3;
  break;
 case 3: //东西向红灯与南北向绿灯亮
  if((Time_Count%20)==0)displaysn();
  RED_A=1;YELLOW_A=0;GREEN_A=0;
  RED_B=0;YELLOW_B=0;GREEN_B=1;
  if(++Time_Count!=time) return;
  Time_Count=0;
  Operation_Type=4;
  break;
 case 4: //南北向黄灯开始闪烁，绿灯关闭
 LEDsng=0x0;
 LEDsns=0x0;
  if(++Time_Count!=8) return;
  Time_Count=0;
  YELLOW_B=~YELLOW_B;GREEN_A=0;
  if(++Flash_Count!=6) return; //闪烁
  Flash_Count=0;
  Operation_Type=1;
  break;
 }
}
void t1_isr() interrupt 3
{
 TR1=0;
 TH1=(65536-3000)/256;
 TL1=(65536-3000)%256;
 TR1=1;
 switch(discnt)
 {
 case 0:
  P2=0x02;
  P0=ledtab[LEDewg];
  break;
 case 1:
  P2=0x01;
  P0=ledtab[LEDews];
  break;
 case 2:
  P2=0x08;
  P0=ledtab[LEDsng];
  break;
 case 3:
  P2=0x04;
  P0=ledtab[LEDsns];
  break;
 default:discnt=0;break;
 }
 discnt++;
 discnt&=0x03;
}
void delay()
{
 uint i;
 for(i=0;i<1000;i++);
}
//主程序
void main()
{
 TMOD=0x11; //T0 方式1
 EA=1;
 ET0=1;
 TR0=1;
 TH1=(65536-3000)/256;
 TL1=(65536-3000)%256;
 TR1=1;
 ET1=1;
 time=120;
 Time_Count=100;
 Time_Count=0;
 Operation_Type=1;
 while(1)
 {
  if(KEY1==0)    //按一下加1S
  {
   delay();
   if(KEY1==0)
   {
   while(KEY1==0);
   TR0=0;
   time+=20;
   LEDsng=(time/20)%10;
   LEDsns=(time/20)/10;
   LEDewg=0x10;
   LEDews=0x10;
   }
  }
  if(KEY2==0)    //按一下减1S
  {
   delay();
   if(KEY2==0)
   {
   while(KEY2==0);
   TR0=0;
   time-=20;
   if(time==0)time=20;
   LEDewg=(time/20)%10;
   LEDews=(time/20)/10;
   LEDsng=0x10;
   LEDsns=0x10;
   }
  }
  if(KEY3==0)   //启动
  {
   delay();
   if(KEY3==0)
   {
   while(KEY2==0);
   TR0=1;
   Time_Count=0;
   }
  }
 }
}

热心网友 时间：2023-10-09 12:39