流水灯&数码管&定时器中断

利用动态扫描和定时器1在数码管上显示出从765432开始以1/10秒的速度往下递减直至765398并保持显示此数，与此同时利用定时器0以500MS速度进行流水灯从上至下移动，当数码管上数减到停止时，实验板上流水灯也停止然后全部开始闪烁，3秒后（用T0定时）流水灯全部关闭、数码管上显示出“HELLO”。到此保持住。

#include
#include
#define uint unsigned int
#define uchar unsigned char
uint temp=0xfe,num=432,time;
sbit dula=P2^6;
sbit wela=P2^7;
uchar code table_du[]={
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};
uchar code table_we[]={
0xfe,0xfd,0xfb,0xf7,0xef,0xdf};
void delay(uint z);
void disply();
void init();
void disply_hello();
void main()
{
	int mark=0;
	init();
	while(1)
	{
		
		if(num>398)
		{
			disply();
			P1=temp;
		}
		else if(num==398&&mark!=3)
		{
			mark++;
			while(time<20)
			{
				disply();
				P1=0x0;
			}
			while(time>=20&&time<=40)
			{
				wela=1;
				P0=0xff;
				wela=0;
				dula=1;
				P0=0xff;
				dula=0;
				P1=0xff;
				if(time==40)
					time=0;
			}
		}
		else if(mark==3)
		{
			while(1)
				disply_hello();
		}
	}
}

void delay(uint z)
{
	uint x,y;
	for(x=z;x>0;x--)
		for(y=110;y>0;y--);
}

void time0() interrupt 1
{
	TH0=(65536-50000)/256;
	TL0=(65536-50000)%256;
	time++;
	if(num>398)
		if(time==4||time==8||time==12||time==16||time==20)
		{
			if(time==20)
			{
				temp=_crol_(temp,1);
				time=0;
			}
			num--;
			if(num==398)
				time=0;
		}
	
	
}
void init()
{
	num=432;
	TMOD=1;
	TH0=(65536-50000)/256;
	TL0=(65536-50000)%256;

	EA=1;
	ET0=1;
	TR0=1;
}
void disply()
{
	uint a,b,c;
	a=num/100;
	b=num/10%10;
	c=num%10;	

	P0=0x0;
	wela=1;
	P0=table_we[0];
	wela=0;
	P0=0x0;
	dula=1;
	P0=table_du[7];
	dula=0;
	delay(1);

	P0=0x0;
	wela=1;
	P0=table_we[1];
	wela=0;
	P0=0x0;
	dula=1;
	P0=table_du[6];
	dula=0;
	delay(1);

	P0=0x0;
	wela=1;
	P0=table_we[2];
	wela=0;
	P0=0x0;
	dula=1;
	P0=table_du[5];
	dula=0;
	delay(1);

	P0=0x0;
	wela=1;
	P0=table_we[3];
	wela=0;
	P0=0x0;
	dula=1;
	P0=table_du[a];
	dula=0;
	delay(1);

	P0=0x0;
	wela=1;
	P0=table_we[4];
	wela=0;
	P0=0x0;
	dula=1;
	P0=table_du[b];
	dula=0;
	delay(1);

	P0=0x0;
	wela=1;
	P0=table_we[5];
	wela=0;
	P0=0x0;
	dula=1;
	P0=table_du[c];
	dula=0;
	delay(1);
}
void disply_hello()
{
	P0=0x0;
	wela=1;
	P0=table_we[0];
	wela=0;
	P0=0x0;
	dula=1;
	P0=0x76;
	dula=0;
	delay(1);

	P0=0x0;
	wela=1;
	P0=table_we[1];
	wela=0;
	P0=0x0;
	dula=1;
	P0=0x79;
	dula=0;
	delay(1);

	P0=0x0;
	wela=1;
	P0=table_we[2];
	wela=0;
	P0=0x0;
	dula=1;
	P0=0x38;
	dula=0;
	delay(1);

	P0=0x0;
	wela=1;
	P0=table_we[3];
	wela=0;
	P0=0x0;
	dula=1;
	P0=0x38;
	dula=0;
	delay(1);

	P0=0x0;
	wela=1;
	P0=table_we[4];
	wela=0;
	P0=0x0;
	dula=1;
	P0=0x3f;
	dula=0;
	delay(1);

	P0=0x0;
	wela=1;
	P0=table_we[5];
	wela=0;
	P0=0x0;
	dula=1;
	P0=0x0;
	dula=0;
	delay(1);
}