我的单片机交通灯设计

ID:770492 · 发表于 2020-6-5 17:37

#include <reg52.h>
#define uint unsigned int
#define uchar unsigned char
sbit RED_A = P0^0;
sbit YELLOW_A = P0^1;
sbit GREEN_A = P0^2;
sbit RED_B = P0^3;
sbit YELLOW_B = P0^4;
sbit GREEN_B = P0^5;
sbit K1=P1^0;
sbit K2=P1^1;
sbit K3=P1^2;
uchar reckon ,Flash_Count = 0,Operation_Type = 1,Key_Flag_Idx,t,Second_Counts,yellow=0,i,m;
uchar DSY_CODE[]=
{
      0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f
};//显示代码表
void T0_INT() interrupt 1
{
      TH0  = (65535-50000)/256;
      TL0  = (65535-50000)%256;
      if(++i==20)//精确到一秒
      {
               i = 0;
            --Second_Counts;
            P3 = DSY_CODE[Second_Counts/10];//十位
            P2 = DSY_CODE[Second_Counts%10];//个位
            if(Second_Counts == 0) Second_Counts = t;//等于0后重新开始
      switch(Operation_Type)
      {
               case 1:
                     RED_A=0;YELLOW_A=0;GREEN_A=1;//东西道绿灯亮
                     RED_B=1;YELLOW_B=0;GREEN_B=0;//南北道红灯亮
                     if(--reckon != 0) return;
                     reckon=m;
                     Operation_Type = 2;
                     break;
            case 2:
                     if(++yellow !=1) return;
                     yellow=0;
                     YELLOW_A=!YELLOW_A;//东西道黄灯闪
                     GREEN_A=0;
                     if(++Flash_Count !=5) return;//闪烁5秒
                     Flash_Count=0;
                     Operation_Type = 3;
                     break;
            case 3:
                     RED_A=1;YELLOW_A=0;GREEN_A=0;//东西道红灯亮
                     RED_B=0;YELLOW_B=0;GREEN_B=1;//南北道绿灯亮
                     if(--reckon !=0 ) return;
                     reckon=m;
                     Operation_Type = 4;
                     break;
            case 4:
                     if(++yellow != 1) return;
                     yellow=0;
                     YELLOW_B=!YELLOW_B;//南北道黄灯闪
                     GREEN_B=0;
                     if(++Flash_Count !=5)//闪烁5秒
                              return;
                     Flash_Count=0;
                     Operation_Type = 1;
                     break;
      }
}
}

void main()
{
t=20;
      m=t-5;//为黄灯闪烁节省出时间
EA=1;
      ET0=1;
      TR0=1;
P1 = 0x3f;
      P2 = 0x3f;
      i = 0;
      reckon=m;
      Second_Counts = t;
      TMOD = 0x01;//定时器为模式以1
      while(1)
      {
         if(K1==0)//时间变长
      {
      t=t+5;
      if(t>=70)
      t=20;
      m=t-5;
      }
               if(K2==0)//时间变短
      {
      t=t-5;
      if(t<=5)                      //警告不可连续按按钮，一次红绿灯时长馁只可按一次
      t=20;
      m=t-5;
      }
      if(K3==0)//恢复正常
      {
      t=20;
      m=t-5;
      }
      }
}

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