51单片机 定时器0中断实现1秒LED流水灯

使用定时器0中断实现LED1秒的流水灯

#include <reg52.h>
typedef unsigned int u16;
typedef unsigned char u8;
u8 code LED[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
u16 time,i;

void timer0init()
{
	TMOD=0x01;
	ET0=1;
	EA=1;
	TR0=1;
	TH0=(65536-50000)/256;
	TL0=(65536-50000)%256;
}

void main()
{	
	timer0init();
	while(1);
}

void timer0() interrupt 1
{
  TH0=(65536-50000)/256;
	TL0=(65536-50000)%256;
	time++;
	if(time==20)
	{
		P2=LED[i];
		i++;
		if(i==8)
		{
			i=0;
		}
		time=0;
	}
}