#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit lcd_rs=P2^0;
sbit lcd_rw=P2^1;
sbit lcd_en=P2^2;
sbit key1=P3^0;
sbit key2=P3^1;
sbit key3=P3^2;
uchar code table[]="Date:2009-12-31";
uchar code table1[]="Time: 23:59:52";
uchar code table3[]={31,29,31,30,31,30,31,31,30,31,30,31};
void write_com(uchar);
void write_data(uchar);
void write_dat1(uchar,uint);
void write_dat2(uchar,uchar);
void write_dat3(uchar,uchar);
void delay(uint);
void state();
void keyscan();
void clock();
uint hou,min,sec,tt,day,mon，year,keynum;
void main()
{sec=52;
min=59;
hou=23;
day=31;
mon=12;
year=2009;
state();
while(1)
{clock();
keyscan();}
}
void mc() interrupt 1
{TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
tt++;
}
void write_com(uchar com)
{lcd_rs=0;
lcd_rw=0;
lcd_en=0;
P1=com;
delay(5);
lcd_en=1;
delay(5);
lcd_en=0;
}
void write_data(uchar date)
{lcd_rs=1;
lcd_rw=0;
lcd_en=0;
P1=date;
delay(5);
lcd_en=1;
delay(5);
lcd_en=0;
}
void write_dat1(uchar add1,uint dat1)
{uint qian,bai,shi,ge;
qian=2;
bai=0;
shi=(dat1%100)/10;
ge=dat1/10;
write_com(0x80+add1);
write_data(0x30+qian);
write_data(0x30+bai);
write_data(0x30+shi);
write_data(0x30+ge);
}
void write_dat2(uchar add2,uchar dat2)
{uchar shi,ge;
shi=dat2/10;
ge=dat2%10;
write_com(0x80+0x40+add2);
write_data(0x30+shi);
write_data(0x30+ge);
}
void write_dat3(uchar add3,uchar dat3)
{uchar shi,ge;
shi=dat3/10;
ge=dat3%10;
write_com(0x80+add3);
write_data(0x30+shi);
write_data(0x30+ge);
}
void state()
{uchar num;
lcd_en=0;
write_com(0x38);
write_com(0x0c);
write_com(0x06);
write_com(0x01);
write_com(0x80);
for(num=0;num<15;num++)
{write_data(table[num]);
delay(5);
}
write_com(0x80+0x40);
for(num=0;num<14;num++)
{write_data(table1[num]);
delay(5);
}
TMOD=0x01;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
EA=1;
ET0=1;
TR0=1;
}
void clock()
{if(tt==20)//定时1秒
{tt=0;
sec++;
if(sec==60)
{sec=0;
min++;
if(min==60)
{
min=0;
hou++;
if(hou==24)
{hou=0;
day++; if(day>table3[mon-1])
{day=1;
mon++;
if(mon==13)
mon=1;
year++;
if(year==2100)
{
year=2000;
}
write_dat1(5,year);
}
write_dat3(10,mon);
}
write_dat3(13,day);
}
write_dat2(6,hou);
}
write_dat2(9,min);
}
write_dat2(12,sec);
}
}
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void keyscan()
{
if(key1==0)
{
delay(5);
if(key1==0)
{
keynum++;
while(!key1);
if(keynum==1)
{
TR0=0;
write_com(0x80+0x40+12);
write_com(0x0f);
}
if(keynum==2)
{
write_com(0x80+0x40+9);
}
if(keynum==3)
{
write_com(0x80+0x40+6);
}
if(keynum==4)
{
write_com(0x80+13);
}
if(keynum==5)
{
write_com(0x80+10);
}
if(keynum==6)
{
write_com(0x80+5);
}
if(keynum==7)
{
keynum=0;
write_com(0x0c);
TR0=1;
}
}
}
if(keynum!=0)
{
if(key2==0)
{
delay(5);
if(key2==0)
{
while(!key2);
switch(keynum)
{
case 1:sec++;
if(sec==60)sec=0;
write_dat2(12,sec);
write_com(0x80+0x40+12);break;
case 2:min++;
if(min==60)min=0;
write_dat2(9,min);
write_com(0x80+0x40+9);break;
case 3:hou++;
if(hou==24)hou=0;
write_dat2(6,hou);
write_com(0x80+0x40+6);break;
case 4:day++;
if(day==table3[mon-1])day=1;
write_dat3(13,day);
write_com(0x80+13);
break;
case 5:mon++;
if(mon==13)mon=1;
write_dat3(10,mon);
write_com(0x80+10);break;
case 6:year++;
if(year==2100)year=2000;
write_dat1(5,year);
write_com(0x80+5);break;
}
}
}
if(key3==0)
{
delay(5);
if(key3==0)
{
while(!key3);
switch(keynum)
{
case 1:sec--;
if(sec==-1)sec=59;
write_dat2(12,sec);
write_com(0x80+0x40+12);break;
case 2:min--;
if(min==-1)min=59;
write_dat2(9,min);
write_com(0x80+0x40+9);break;
case 3:hou--;
if(hou==-1)hou=23;
write_dat2(6,hou);
write_com(0x80+0x40+6);break;
case 4:day--; if(day==0)day=table3[mon-1];
write_dat3(13,day);
write_com(0x80+13);
break;
case 5:mon--;
if(mon==0)mon=12;
write_dat3(10,sec);
write_com(0x80+10);break;
case 6:year--;
if(year==1999)year=2099;
write_dat1(5,sec);
write_com(0x80+5);break;
}
}
}
}
}
自己编写的一个时钟程序，在仿真的时候，在调节日的时候递加到最大只有30，但是从1递减的时候却又会出现31；在调节月份的时候递减，就会出现错误的月份；在调节年的时候，无论是递加还是递减都出现错误的年数。其他都是好的，请高手帮忙解决一下！ |
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