中断流水灯.c

自己做的单片机Proteus仿真实例

#include<reg51.h>
#include<intrins.h>
#define uint unsigned int
#define uchar unsigned char
sbit flag=P3^2;
uchar num;
uchar aa;
void main()
{  aa=0xfe;
   P1=aa;
   TMOD=0x01;
   TH0=(65536-10000)/256;
   TL0=(65536-10000)%256;
   EA=1;
   ET0=1;
   TR0=1;
   while(1);
}
void T00() interrupt 1
{  
   TH0=(65536-10000)/256;
   TL0=(65536-10000)%256;
   num++;
   if(num==100)
   {
      num=0;
	  if(flag==1)
	  {
	      aa=_cror_(aa, 1);
   	      P1=aa;  
	  }
	 else
	  { 
	      aa=_crol_(aa, 1);
   	      P1=aa;
	  }
	}
}