俺家小三的一个MCU钟表小程序

俺家小三开始学习单片机开发，昨天晚上写的一个钟表小程序，发出来纪念一下。呵呵

 

#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int

sbit key1=P3^4;
sbit key2=P3^5;
sbit key3=P3^6;
sbit key4=P3^7;

uchar code smg_du[]=
{
    0x3f,0x06,0x5b,0x4f, //0 1 2 3
    0x66,0x6d,0x7d,0x07, //4 5 6 7
    0x7f,0x6f,0x77,0x7c, //8 9 a b
    0x39,0x5e,0x79,0x71,0x00 //c d e f null
};
uchar smg_we[]=
{
    0xfe,0xfd,0xfb,0xf7,
    0xef,0xdf,0xbf,0x7f
};

sbit LACTCH1=P2^6;
sbit LACTCH2=P2^7;
uchar count;
uchar clickcnt;
uchar second;
uchar minute;
uchar hour;
uchar dispbuf[6]={1,2,0,0,0,0};
void delay(uint m)
{
    while(m--);
}
void main(void)
{
uchar j;
count=0;
second=0;
hour=0;
TMOD=0x01; //0000,0001 设置定时器0工作方式1
TH0=(65536-50000)/256; //设置初值 定时50ms
TL0=(65536-50000)%256;
EA=1; //打开总中断
ET0=1; //打开定时器0 中断

while(1)
{
if(key3==0)
{
delay(100);
if(key3==0)
{
second++;
if(second==60)
{
second=0;
}
dispbuf[5]=second%10;
dispbuf[4]=second/10;
dispbuf[5]=second%10;
dispbuf[4]=second/10;
while(key3==0);
}
}
if(key2==0)
{
delay(100);
if(key2==0)
{
minute++;
if(minute==60)
minute=0;

dispbuf[2]=minute/10;
dispbuf[3]=minute%10;
while(key2==0);
}
}
if(key1==0)
{
delay(100);
if(key1==0)
{
hour++;
if(hour==24)
hour=0;
dispbuf[1]=hour%10;
dispbuf[0]=hour/10;
while(key1==0);
}
}

if(key4==0)
{
delay(200);
if(key4==0)
{
clickcnt++;
if((clickcnt%2)==1)
{
TR0=1;
}
else
{
TR0=0;
}
}
while(key4==0);
}

for(j=0;j<6;j++)
{
P0=smg_du[dispbuf[j]];
LACTCH1=1;
LACTCH1=0;

P0=smg_we[j];
LACTCH2=1;
LACTCH2=0;
delay(100);
}
}
}
void timer_int0(void) interrupt 1
{
TH0=(65536-50000)/256; //设置初值 定时50ms
TL0=(65536-50000)%256;
count++;
if(count==20)
{
count=0;
second++;
if(second==60)
{
second=0;
minute++;
if(minute==60)
{
minute=0;
hour++;
if(hour==24)
{
hour=0;
}
dispbuf[1]=hour%10;
dispbuf[0]=hour/10;
}
dispbuf[3]=minute%10;
dispbuf[2]=minute/10;
}
dispbuf[5]=second%10;
dispbuf[4]=second/10;
}
}