twointerupt.txt

针对单片机（at89s51）两个内部中断同时使用的实例

#include<reg51.h>
#define uint unsigned int
#define uchar unsigned char
sbit ggh=P3^7;
uchar temp=0xfe,ddf,ghh,i,aa,bb,num,dd;
uchar code table[]={0xed,0x88,0xb5,0xb9,0xd8,0x79,0x7d,0xa8,0xfd,0xf9};
void main()
{	uint tt,gg;
    aa=0;num=0;bb=0;dd=0;
	TMOD=0x11; 
	TH0=(65536-50000)/256;
	TL0=(65536-50000)%256;
	TH1=(65536-25000)/256;
	TL1=(65536-25000)%256;
	
	ET0=1;
	TR0=1;
	ET1=1;
	TR1=1;
	EA=1;
		while(1)
    {
      for(i=1;i<=8;i++)
	  {
	   ddf=temp>>i;
	  ghh=temp<<8-i;
	  for(tt=600;tt>0;tt--)
	  for(gg=20;gg>0;gg--)
      {
	    P0=ddf|ghh;
	    P2=0x0b;
	  	P2=0x00; 
	    P0=table[num];
	    P2=0x02;
	    P2=0x00;
		P0=table[dd];
		P2=0x04;
		P2=0x00;
	  }
	  }	ggh=0;
	  for(i=0;i<=7;i++)
	  {
	    ddf=temp<<i;
	    ghh=temp>>8-i;
		for(tt=600;tt>0;tt--)
	    for(gg=20;gg>0;gg--)
        {
         P0=ddf|ghh;
	     P2=0x0b;
	     P2=0x00; 
	     P0=table[num];
	     P2=0x02;
	     P2=0x00;
		 P0=table[dd];
		 P2=0x04;
		 P2=0x00;
		 if(tt<300)ggh=1;
        }
	   
	  }
    } 
}

void timer0() interrupt 1
{	 
	TH0=(65536-50000)/256;
	TL0=(65536-50000)%256;
	aa++;
	if(aa==20)
		{
			  aa=0;
			  num++;
			  if(num==10)
			  	num=0;
			  		  
		}
}

void timer1() interrupt 3
{	
	TH1=(65536-25000)/256;
	TL1=(65536-25000)%256;
	bb++;
	if(bb==20)
		{
			  bb=0;
			  dd++;
			  if(dd==10)
			  	dd=0;
			  	  
		}
}