#include <reg51.h>
#define uchar unsigned char
sbit oe = P1^3;
sbit du = P1^4;
sbit we = P1^5;
uchar flag_t1 = 0, count = 0;			//定时器1的两个计时变量
uchar code table[]=
{0x01, 0x02, 0x04, 0x08, 0x10, 			//共阴段码
0x20, 0x40, 0x80, 0x3f, 0x06, 
0x5b, 0x4f, 0x66, 0x6d, 0x7d, 
0x07, 0x7f, 0x6f, 0x77, 0x7c, 
0x39, 0x5e, 0x79, 0x71, 0x00};
uchar code flash[]={0x3f, 0x00};		//0，灭
uchar flag = 0, i = 0;

void main()
{
	oe = 0;					//开数码管总使能
	du = 0;
	we = 0;
	TMOD = 0X11;				//模式设置
	TH0 = (65535 - 50000) / 256;		//T0定时初值
	TL0 = (65535 - 50000) % 256;
	TH1 = (65535 - 50000) / 256;
	TL1 = (65535 - 50000) % 256;
	ET0 = 1;				//允许T0中断
	TR0 = 1;				//打开T0
	ET1 = 1;
	//TR = 1;
	EA = 1;					//允许所有中断
	while(1);
	
}

void t0(void) interrupt 1
{
	TH0 = (65535 - 50000) / 256;
	TL0 = (65535 - 50000) % 256;
	flag++;					//计时变量
	if(flag == 6)
	{
		flag = 0;
		P0 = 0;				//送位选值
		we = 1;
		we = 0;
		//P0 = 0x7f | 0x80;
		P0 = table[i++];		//送段码
		du = 1;
		du = 0;
		if(i>24)			//判断是否显示完
		{
			//table[2] = 0x00;
			//i = i - 1;
			
			TR0 = 0;		//关T0
			TR1 = 1;		//开T1
			i = 0;			//i初始为0
		}
		
	}
}
void t1(void) interrupt 3
{
	TH1 = (65535 - 50000) / 256;
	TL1 = (65535 - 50000) % 256;
	flag_t1++;				//T1计时变量1
	count++;				//T1计时变量2
	if(flag_t1 == 6)
	{
		flag_t1 = 0;
		P0 = 0;
		we = 1;
		we = 0;
		//P0 = 0x7f | 0x80;
		P0 = flash[i++];
		du = 1;
		du = 0;
		if(i>1)				//闪烁
		{
			//table[2] = 0x00;
			//i = i - 1;
			i = 0;
		}
	}
	if(count == 42)				//时间到了关T1，数码管全灭
	{
		TR1 = 0;
		P0 = 0x00;
		du = 1;
		du = 0;
	}
}