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標題: 計數器出錯 [打印本頁]

作者: diangong 時間: 2015-3-21 16:45
標題: 計數器出錯
觸發一次，跳轉好幾個數。從網上下的計數程序。求大俠賜教！涕零感激！

#include "reg52.h"

#define u8 unsigned char

#define u16 unsigned int

sbit sw1=P3^4;

sbit sw2=P3^5;

sbit sw3=P3^6;

sbit e0=P2^0;

sbit e1=P2^1;

sbit e2=P2^2;

sbit e3=P2^3;

u8 ds[4]={0,0,0,0};

u16 num=0;

u8 code table[]={0X3F,0X06,0X5B,0X4F,0X66,0X6D,0X7D,0X07,0X7F,0X6F,0x00};

u8 ajsm()

{

static u16 ms;

if(sw3==0)

{

if(++ms==2)

{

return 1;

}

else

{

ms=0;

}

return 0;

}

void xs()

{

static u8 a;

a++;

if(a>3)a=0;

e0=1;

e1=1;

e2=1;

e3=1;

P0=table[ds[a]];

switch(a)

{

case 0:

{

e0=0;

e1=1;

e2=1;

e3=1;

}break;

case 1:

{

e0=1;

e1=0;

e2=1;

e3=1;

}break;

case 2:

{

e0=1;

e1=1;

e2=0;

e3=1;

}break;

case 3:

{

e0=1;

e1=1;

e2=1;

e3=0;

}break;

}

void main()

{

TMOD=0x66;

TH0=0xff;

TL0=0xff;

TH1=0xff;

TL1=0xff;

TR1=1;

TR0=1;

ET0=1;

ET1=1;

EA=1;

while(1)

{

ds[0]=num/1000%10;

ds[1]=num/100%10;

ds[2]=num/10%10;

ds[3]=num%10;

xs();

if(ajsm())

{

num=0;

}

void time0()interrupt 1

{

if(num<9999)num++;

}

void time1()interrupt 3

{

if(num>0)num--;

}

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