定时器计数并将计数值实时显现在数码管

//********************************

//守时器T1计数并将计数值实时显现至数码管

//T0守时(数码管动态扫描用)；T1计数

//作者：曾宪阳

//网址：http://hi.baidu.com/zxymcu

//********************************

#include

#defineucharunsignedchar

#defineuintunsignedint

unsignedinti=0;

ucharx=0;

ucharcodeDuan[]={0xc0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90};

ucharcodeWei[]={0x01,0X02,0X04,0x08,0x10,0X20};

ucharDisp[5];

voidTime0(void)interrupt1using3

{

TH0=(65536-1000)/256;

TL0=(65536-1000)%6;

P2=0X00;//封闭显现

P0=Duan[Disp[x]];

P2=Wei[x];

x++;

if(x==5)x=0;

}

voidInitT0(void)

{

TMOD=0X51;//T0守时（动态扫描显现)；T1计数

TH0=(65536-1000)/256;

TL0=(65536-1000)%6;

EA=1;ET0=1;

TR0=1;TR1=1;

}

voidmain(void)

{

InitT0();

while(1)

{

i=0;//读数前清零i

i=(((i”TH1)<<8)|TL1);//读取T1的值至i

Disp[4]=i/10000;//拆分各位数据后保存至显现缓冲区

Disp[3]=i000/1000;

Disp[2]=i00000/100;

Disp[1]=i000000/10;

Disp[0]=i000000;

}

}