单片机开关控制流水灯启动/暂停源程序

ID:846350 · 发表于 2020-11-20 10:54

#include "reg51.h"
#include "intrins.h"
#define count 50000
#define LED P0
#define TH_M1 (65536-count)/256
#define TL_M1 (65536-count)%256
int i=0,t=0;
unsigned char led=0x01;
void Delay(unsigned int n);
sbit K1=P3^2;
void timer0()interrupt 1
{
  TH0=TH_M1;
  TL0=TL_M1;
  i++;
  if(i==10)
  {
LED=0x00;
  }
  if(i==20)
{
LED=_crol_(led,1);
      led=LED;
      i=0;
}
}
void main()
{

  EA=1;
  EX0=1;
  IT0=1;
  ET0=1;
  TMOD&=0xf0;
  TMOD|=0x01;
  LED=0x01;
  TR0=1;
  while(1);
}
void Int0()interrupt 0
{
  Delay(10);
  if(K1==0)
  {
   Delay(5);
      if(K1==0)
      {
         t++;
      }
      if(t==1)
      {
   TR0=~TR0;
      }
      if(K1==1)
      {
         t=0;
      }
  }
}
void Delay(unsigned int n)
{
  unsigned char a,b;
  for(;n>0;n--)
for(b=38;b>0;b--)
      for(a=130;a>0;a--);
}

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