#include<reg51.h>
#define uchar unsigned char;
#define uint unsigned int;
uchar position;
uchar tt,bz1=0,bz2=0,bz3=0;
uchar second;
uchar minute;
uchar hour;
uchar code table[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};//0--9
sbit smg_q = P2^0;
sbit smg_b = P2^1;
sbit smg_s = P2^2;
sbit smg_g = P2^3;
sbit key1=P3^2;
sbit key2=P3^3;
sbit key3=P3^4;
sbit key4=P3^5;
sbit led1=P1^0;
sbit led2=P1^1;
sbit led3=P1^2;
sbit led4=P1^3;
sbit led5=P1^4;
sbit led6=P1^5;
sbit beep=P2^5;
void keyscan();
void display(unsigned char hour,unsigned char minute);
void delay(unsigned int timer);
void init();
void main()
{
init();
while(1)
{
if(tt==20)
{ led1=~led1;led2=~led2;
if (bz1==1 )
{
beep=0;
delay(100);
led3=~led3;led4=~led4;
bz1=0;
}
if (bz2==1 )
{
beep=0;
delay(100);
led5=~led5;led6=~led6;
bz2=0;
}
tt=0;
second++;
if(second==60)
{
led3=~led3;led4=~led4;
bz1=1;
second=0;
minute++;
if(minute==60)
{
led5=~led5;led6=~led6;
bz2=1;
minute=0;
hour++;
if(hour==24)
hour=0;
}
}
}
keyscan();
display(hour,minute);
delay(1);
beep=1;
}
}
void keyscan()
{ if(key1==0)
{
TR0=0;
hour++;
if(hour==24)
hour=0;
delay(200) ;
TR0=1;
}
if(key2==0)
{TR0=0;
hour--;
if(hour<0)
hour=23;
delay(200) ;
TR0=1;
}
if(key3==0)
{
TR0=0;
minute++;
if(minute==60)
minute=0;
delay(200) ;
TR0=1;
}
if(key4==0)
{
TR0=0;
minute--;
if(minute<0)
minute=59;
delay(200) ;
TR0=1;
}
}
void init()
{
tt=0;
position=0;
second=0;
minute=0;
hour=0;
smg_q=1;
smg_b=1;
smg_s=1;
smg_g=1;
key1=1;
key2=1;
TMOD=0X01;
TH0=0x4c;
TL0=0x00;
EA=1;
ET0=1;
TR0=1;
}
void t0() interrupt 1
{
TH0=0x4c;
TL0=0x00;
tt++;
}
void display(unsigned char hour,unsigned char minute)
{ P0=0XFF;
switch(position)
{
case 0: smg_g=1;smg_q=0;P0=table[hour/10]; break;
case 1: smg_q=1;smg_b=0; P0=table[hour%10];if(tt>=10) P0&=0x7f; break;
case 2: smg_b=1;smg_s=0;P0=table[minute/10];break;
case 3: smg_s=1;smg_g=0;P0=table[minute%10];break;
}
position++;
if(position>3)
position=0;
}
void delay(unsigned int time)
{
unsigned int x,y;
for(x=time;x>0;x--)
for(y=110;y>0;y--);
}