单片机交通灯代码

ID:995326 · 发表于 2021-12-23 19:41

#include<reg51.h>
#define uchar unsigned char
#define uint unsigned int
sbit EW_LED2=P2^3;
sbit EW_LED1=P2^2;
sbit SN_LED2=P2^1;
sbit SN_LED1=P2^0;
sbit SN_Yellow=P1^6;
sbit SN_Red=P1^7;
sbit EW_Yellow=P1^2;
sbit EW_Red=P1^3;
bit Flag_SN_Yellow;
bit       Flag_EW_Yellow;
char Time_EW;
char Time_SN;
uchar EW=10,SN=10,EWL=3,SNL=3;
uchar EW1=10,SN1=10,EWL1=3,SNL1=3;
uchar code table[10]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};
uchar code s[9]={0x28,0x48,0x18,0x48,0x82,0x84,0x81,0x84,0x88};
void delay_ms(unsigned int x)
{
      unsigned int i,j;
      for(i=x;i>0;i--)
      for(j=110;j>0;j--);
}
void Display(void)
{
      char h,l;
      h=Time_EW/10;
      l=Time_EW%10;
      P0=table[l];
      EW_LED2=1;
      delay_ms(1);
      EW_LED2=0;
      P0=table[h];
      EW_LED1=1;
      delay_ms(1);
      EW_LED1=0;
      h=Time_SN/10;
      l=Time_SN%10;
      P0=table[l];
      SN_LED2=1;
      delay_ms(1);
      SN_LED2=0;
      P0=table[h];
      SN_LED1=1;
      delay_ms(1);
      SN_LED1=0;
}
void timer0(void)interrupt 1 using 1
{
      static uchar count;
      TH0=(65536-50000)/256;
      TL0=(65536-50000)%256;
      count++;
      if(count==10)
      {
            if(Flag_SN_Yellow==1)
            {SN_Yellow=~SN_Yellow;}
            if(Flag_EW_Yellow==1)
            {EW_Yellow=~EW_Yellow;}
      }
      if(count==20)
      {
            Time_EW--;
            Time_SN--;
            if(Flag_SN_Yellow==1)
            {SN_Yellow=~SN_Yellow;}
            if(Flag_EW_Yellow==1)
            {EW_Yellow=~EW_Yellow;}
            count=0;
      }
}
void main(void)
{
      TMOD=0x01;
      TH0=(65536-50000)/256;
      TL0=(65536-50000)%256;
      EA=1;
      ET0=1;
      TR0=1;
      Time_EW=3;
      Time_SN=3;
      while(Time_SN>=0||Time_EW>=0)
      {
            Flag_EW_Yellow=0;
            P1=s[8];
            Display();
      }
      while(1)
      {
            Time_EW=EW;
            Time_SN=SN;
            while(Time_SN>=4)
            {
                     Flag_EW_Yellow=0;
                     P1=s[0];
                     Display();
            }
            P1=0x00;
            while(Time_SN>=0)
            {
                     Flag_SN_Yellow=1;
                     EW_Red=1;
                     Display();
            }
            EW=EW1;
            SN=SN1;
            EWL=EWL1;
            SNL=SNL1;
            Time_EW=SN;
            Time_SN=EW;
            while(Time_EW>=4)
            {
                     Flag_SN_Yellow=0;
                     P1=s[4];
                     Display();
            }
            P1=0x00;
            while(Time_EW>=0)
            {
                     Flag_EW_Yellow=1;
                     SN_Red=1;
                     Display();
            }
            EW=EW1;
            SN=SN1;
            EWL=EWL1;
            SNL=SNL1;
      }
}

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