红绿灯

ID:343606 · 发表于 2018-6-2 17:09

#include<reg52.h>
#define uint unsigned int
#define uchar unsigned char
sbit RED_A=P1^0;    //东西向红灯
sbit YEL_A=P1^1;    //东西向黄灯
sbit GRE_A=P1^2;    //东西向绿灯
sbit RED_B=P1^3;    //南北向红灯
sbit YEL_B=P1^4;    //南北向黄灯
sbit GRE_B=P1^5;    //南北向绿灯
uchar Time_Count=0,Flash_Count=0,Operation_Type=1;    //分别用于计中断次数，计闪烁次数（2倍），保存当前状态值
void time0() interrupt 1 //T0定时器中断服务函数
{
TH0=(65536-50000)/256; //重置定时器初值
TL0=(65536-50000)%256;
switch(Operation_Type) //根据状态值执行相应语句
{
  case 1: RED_A=0;YEL_A=0;GRE_A=1; //东西向绿灯亮
            RED_B=1;YEL_B=0;GRE_B=0; //南北向红灯亮
            if(++Time_Count!=100)return; //5s时间未到退出switch语句
   Time_Count=0;                //5s时间到计数值清零
   Operation_Type=2;          //状态转移值变为2，准备状态转移
   break;             //退出switch语句
case 2: if(++Time_Count!=8)return; //400ms未到退出switch语句
            Time_Count=0;
   YEL_A=!YEL_A;GRE_A=0;  //东西向黄灯闪，绿灯灭
   if(++Flash_Count!=10)return; //闪烁5次未到退出
   Flash_Count=0; //闪烁次数清零
   Operation_Type=3; //状态转移值变为3，准备状态转移
   break;
  case 3: RED_A=1;YEL_A=0;GRE_A=0; //东西向红灯亮
            RED_B=0;YEL_B=0;GRE_B=1; //南北向绿灯亮
   if(++Time_Count!=100)return; //5s未到退出
   Time_Count=0;
Operation_Type=4; //状态转移值变为4，准备状态转移
   break;
  case 4: if(++Time_Count!=8)return; //0.4s未到退出
            Time_Count=0;
   YEL_B=!YEL_B;GRE_B=0; //南北向黄灯闪烁，绿灯灭
   if(++Flash_Count!=10)return; //闪烁5次未到退出
   Flash_Count=0;
   Operation_Type=1; //重新转移到状态1
   break;
}
}
void main()
{
  TMOD=0x01;
  ET0=1;
  EA=1;
  TH0=(65536-50000)/256; //定时50ms初值
  TL0=(65536-50000)%256;
  TR0=1; //启动T0定时器
  while(1);
}

#include<reg52.h>
#define uint unsigned int
#define uchar unsigned char
sbit RED_A=P1^0;
sbit YEL_A=P1^1;
sbit GRE_A=P1^2;
sbit RED_B=P1^3;
sbit YEL_B=P1^4;
sbit GRE_B=P1^5;
uchar Time_Count=0,Flash_Count=0,Operation_Type=1;
void time0() interrupt 1
{
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
switch(Operation_Type)
{
  case 1: RED_A=0;YEL_A=0;GRE_A=1;
            RED_B=1;YEL_B=0;GRE_B=0;
            if(++Time_Count!=100)return;
   Time_Count=0;
   Operation_Type=2;
   break;
case 2: if(++Time_Count!=8)return;
            Time_Count=0;
   YEL_A=!YEL_A;GRE_A=0;
   if(++Flash_Count!=10)return;
   Flash_Count=0;
   Operation_Type=3;
   break;
  case 3: RED_A=1;YEL_A=0;GRE_A=0;
            RED_B=0;YEL_B=0;GRE_B=1;
   if(++Time_Count!=100)return;
   Time_Count=0;
Operation_Type=4;
   break;
  case 4: if(++Time_Count!=8)return;
            Time_Count=0;
   YEL_B=!YEL_B;GRE_B=0;
   if(++Flash_Count!=10)return;
   Flash_Count=0;
   Operation_Type=1;
   break;
}
}
void main()
{
  TMOD=0x01;
  ET0=1;
  EA=1;
  TH0=(65536-50000)/256;
  TL0=(65536-50000)%256;
  TR0=1;
  while(1);
}

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