基于51单片机简易的交通灯系统

ID:553359 · 发表于 2020-6-17 14:46

[代码]

#include "reg51.h"
#include "intrins.h"
#define uchar unsigned char
#define uint unsigned int
uchar t1,t2;

void delay1s(uint);

void main(void)
{
      TMOD=0x01;
   while(1)
{
   EA=1;
      EX0=1;
      IT0=1;
      P1=0x33;
      delay1s(25);
      P1=0x35;
      delay1s(5);
      P1=0x1e;
      delay1s(25);
      P1=0x2e;
      delay1s(5);
}
}

void ex_int0()interrupt 0
{
uchar x,y,z,m,n;
x=P1;
      y=t1;
      z=t2;
      m=TH0;
      n=TL0;
      P1=0x36;
      delay1s(10);
      P1=x;
      t1=y;
      t2=z;
      TH0=m;
      TL0=n;
}

void delays()
{
   for(t1=0;t1>0x14;t1++)
{
   TH0=0x3c;
      TL0=0xb0;
      TR0=1;
      while(!TF0);
   TF0=0;
}
}

void delay1s(uchar t3)
{
   for(t1=0;t1<t2;t1++)
      delays();
}

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