时间直接从59跳到01了

2019-07-16 02:10发布

#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit rs=P3^5;
sbit lcden=P3^4;
sbit dula=P2^6;
sbit wela=P2^7;
sbit s1=P3^0;
sbit s2=P3^1;
sbit s3=P3^2;
sbit rd=P3^7;
uchar code table[]=" 2013-03-05 SUN";
uchar code table1[]=" 00:59:53 ";
uchar count,shi,fen,s1num;
uchar miao;

void delay(uint i)
{
uchar j;
while(i--)
{
for(j=0;j<125;j++)
{
;
}
}
}

void write_com(uchar com)
{
rs=0;
lcden=0;
P0=com;
delay(10);
lcden=1;
delay(10);
lcden=0;
}

void write_date(uchar date)
{
rs=1;
lcden=0;
P0=date;
delay(10);
lcden=1;
delay(10);
lcden=0;
}

void init()
{
uchar num;
dula=0;
wela=0;
lcden=0;
write_com(0x38);
write_com(0x0c);
write_com(0x01);
write_com(0x80);
write_com(0x06);
for(num=0;num<15;num++)
{
write_date(table[num]);
delay(5);
}
write_com(0x80+40);
for(num=0;num<12;num++)
{
write_date(table1[num]);
delay(5);
}
TMOD=0x01;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
EA=1;
ET0=1;
TR0=1;

}

void timer0() interrupt 1
{
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
count++;
}

void write_sfm(uchar add,uchar date)
{
uchar shi,ge;
shi=date/10;
ge=date%10;
write_com(0x80+0x40+add);
write_date(0x30+shi);
write_date(0x30+ge);

}

void keyscan()
{
rd=0;
if(s1==0)
{
delay(5);
if(s1==0)
{
s1num++;
while(!s1);
if(s1num==1)
{
TR0=0;
write_com(0x80+0x40+10);
write_com(0x0f);
}
}


}
if(s1num==2)
{
write_com(0x80+0x40+7);
}
if(s1num==3)
{
write_com(0x80+0x40+4);
}
if(s1num==4)
{
s1num=0;
write_com(0x0c);
TR0=1;
}
if(s1num!=0)
{
if(s2==0)
{
delay(5);
if(s2==0)
{
while(!s2);
   if(s1num==1)
   {
     miao++;
if(miao==60)
{
miao=0;
}
write_sfm(10,miao);
write_com(0x80+0x40+10);

   }
   if(s1num==2)
   {
   fen++;
   if(fen==60)
   {
   fen=0;
   }
   write_sfm(7,fen);
   write_com(0x80+0x40+7);
   }
   if(s1num==3)
   {
   shi++;
   if(shi==24)
   {
   shi=0;
   }
   write_sfm(4,shi);
   write_com(0x80+0x40+4);
   }

}
}
}
}

void main()
{
init();
while(1)
{
keyscan();
if(count==20)
{
count=0;
miao++;
if(miao==60)
{
miao=0;
fen++;
if(fen==60)
{
fen=0;
shi++;
if(shi==24)
{
shi=0;
}
write_sfm(4,shi);
        }
write_sfm(7,fen);
}
      write_sfm(10,miao);
}
}
}
这是程序每次时间走到59，接着就是01，没有00，而且分走到59 小时也不自加1，依然保持不动这是怎么回事啊~

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