定时器0方式2

#include
     
      #define uchar unsigned char#define uint unsigned intsbit led1=P1;uint num;void main(){	TMOD=0x02;	TH0=6;	TL0=6;	EA=1;	ET0=1;	TR0=1;	while(1)	{		if(num==3686)		{			num=0;			led1=~led1;		}	}}void T0_timer() interrupt 1{	num++;}
     

方式3

#include
     
      #define uchar unsigned char#define uint unsigned intsbit led1=P1^0;sbit led2=P1^1;uint num1,num2;void main(){	TMOD=0x03;	TH0=6;	TL0=6;	EA=1;	ET0=1;	ET1=1;	TR0=1;	TR1=1;	while(1)	{		if(num1>=3686)//1s时间已到		{			num1=0;			led1=~led1;		}		if(num2>=1843)     //半秒时间已到		{			num2=0;			led2=~led2;		}	}}void TL0_timer() interrupt 1{	TL0=6;	num1++;}void TH0_timer() interrupt 3{	TH0=6;	num2++;}