急，求助：看看程序问题；通过按键实现秒表开始，暂停，清零

15116493876 · 发表于 2017-5-6 17:57:51

#include "reg52.h"
typedef unsigned int u16;
typedef unsigned char u8;
sbit LSA=P2^2;
sbit LSB=P2^3;
sbit LSC=P2^4;
sbit k2=P3^0;
sbit k3=P3^2;
sbit k4=P3^3;
u8 code duanxuan[17]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};

u8 s1,s2,s3,sum;
u8 MBXS[4];
void delay(u16 i)
{
while(i--);
}
void Timer0Init()
{
TMOD|=0X01;
TH0=0Xd8;
TL0=0Xf0;
ET0=1;
EA=1;
TR0=1;
}

void DigDisplay()
{
u8 i;
for(i=0;i<4;i++)
{
switch(i)
{
case(0)

SA=0;LSB=0;LSC=0; break;
case(1)

SA=1;LSB=0;LSC=0; break;
case(2)

SA=0;LSB=1;LSC=0; break;
case(3)

SA=1;LSB=1;LSC=0; break;
}
P0=MBXS[i];
delay(100);
P0=0x00;
}
}

void datapros()
{
MBXS[0]=duanxuan[s1/10];
MBXS[1]=duanxuan[s2%10];
MBXS[2]=duanxuan[s2/10];
MBXS[3]=duanxuan[s3%10];
}

void key2()
{
if(k2==0)
{
delay(1000);
if(k2==0)
{
Timer0Init();
sum++;
switch(sum)
{
case(2):TR0=0;
case(3):s1=0;s2=0;s3=0;
default:sum=0;
}
}
while(!k2);
}
}
void main()
{
while(1)
{
key2();
datapros();
DigDisplay();
}
}

void Timer0() interrupt 1
{
TH0=0Xd8;
TL0=0Xf0;
s1++;
if(s1>=100)
{
s1=0;
s2++;
if(s2>=100)
{
s2=0;
s3++;
if(s3>=10)
{
s3=0;
}
}
}
}

BMN李 · 发表于 2017-5-6 20:41:27

本帖最后由 BMN李于 2017-5-6 20:44 编辑

void key2()
{
if (k2 == 0)
{
      delay(1000);
      if (k2 == 0)
      {
         //Timer0Init();
         sum++;
         switch (sum)
         {
         case (2)://暂停
            TR0 = 0;
            break;
         case (3)://清零
            s1 = 0;
            s2 = 0;
            s3 = 0;
            break;
         default://开始
            Timer0Init();
            sum = 0;
            break;
         }
      }
      while (!k2);
}
}