液晶万年历四个按键光标 -

#include<reg52.h>
#define uint unsigned int
#define uchar unsigned char
sbit w=P2^5;
sbit s=P2^6;
sbit e=P2^7;
sbit key1=P3^0; //功能键
sbit key2=P3^1; //增加建
sbit key3=P3^2; //减小键
sbit key4=P3^3; //走动键
uchar count,key1num,tianmax;
long int miao=20,fen=59,shi=23,tian=27,yue=2,nian=2018;
void delayms(uint xms)
{
uint i,j;
for(i=xms;i>0;i--)
for(j=110;j>0;j--);
}
void write_com(uchar com)//命令
{
s=0;
w=0;
e=0;
P0=com;
delayms(5);
e=1;
delayms(5);
e=0;
}
void write_date(uchar date)//数据
{
s=1;
w=0;
e=0;
P0=date;
delayms(5);
e=1;
delayms(5);
e=0;
}
void write_sfm(uchar add,uchar date) //写时分秒函数 add位置 date输入数据
{
uchar shi,ge;
shi=date/10;
ge=date%10;
write_com(0xc0+add);
write_date(0x30+shi);
write_date(0x30+ge);
}
void write_ry(uchar add,uchar date) //写日月函数 add位置 date输入数据
{
uchar shi,ge;
shi=date/10;
ge=date%10;
write_com(0x80+add);
write_date(0x30+shi);
write_date(0x30+ge);
}
void write_nian1()//写年函数
{
uchar ge,shi,bai,qian;
qian=nian/1000%10;
bai=nian/100%10;
shi=nian/10%10;
ge=nian%10;
write_com(0x80+4);
write_date(0x30+qian);
write_date(0x30+bai);
write_date(0x30+shi);
write_date(0x30+ge);
}
void init()//初始化函数
{
count=0;
key1num=0;
write_com(0x38);
write_com(0x08);
write_com(0x01);
write_com(0x06);
write_com(0x0c);
write_com(0xc0+6);
write_date(':');
delayms(1);
write_com(0xc0+9);
write_date(':');
delayms(1);
write_com(0x80+11);
write_date('-');
delayms(1);
write_com(0x80+8);
write_date('-');
delayms(1);
write_sfm(10,miao);
write_sfm(7,fen);
write_sfm(4,shi);
write_ry(12,tian);
write_ry(9,yue);
write_nian1();
TMOD=0x01;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
EA=1;
ET0=1;
TR0=1;
}
void keyscan()
{
if(key1==0)
{
delayms(5);
if(key1==0)
{
key1num++;
while(!key1);
switch(key1num)
{
case 1:
TR0=0;
write_com(0xc0+10); //秒
write_com(0x0f); //光标开始闪烁
break;
case 2:
write_com(0xc0+7); //分
break;
case 3: //时
write_com(0xc0+4);
break;
case 4:
write_com(0x80+12); //天
break;
case 5:
write_com(0x80+9); //月
break;
case 6:
write_com(0x80+4); //年
break;
case 7:
key1num=0;
write_com(0x0c);//取消光标闪烁
TR0=1;
}
}
}
if(key1num!=0)
{
if(key2==0)
{
delayms(5);
if(key2==0)
{
while(!key2);
if(key1num==1)
{
miao++;
if(miao==60)
miao=0;
write_sfm(10,miao);
}
if(key1num==2)
{
fen++;
if(fen==60)
fen=0;
write_sfm(7,fen);
}
if(key1num==3)
{
shi++;
if(shi==24)
shi=0;
write_sfm(4,shi);
}
if(key1num==4)
{
tian++;
if(tian==tianmax)
tian=1;
write_ry(12,tian);
}
if(key1num==5)
{
yue++;
if(yue==13)
yue=1;
write_ry(9,yue);
}
if(key1num==6)
{
nian++;
write_nian1();
}
}
}
if(key3==0)
{
delayms(5);
if(key3==0)
{
while(!key3);
if(key1num==1)
{
miao--;
if(miao==-1)
miao=59;
write_sfm(10,miao);
}
if(key1num==2)
{
fen--;
if(fen==-1)
fen=59;
write_sfm(7,fen);
}
if(key1num==3)
{
shi--;
if(shi==-1)
shi=23;
write_sfm(4,shi);
}
if(key1num==4)
{
tian--;
tianmax=tianmax-1;
if(tian==0)
tian=tianmax;
write_ry(12,tian);
}
if(key1num==5)
{
yue--;
if(yue==0)
yue=12;
write_ry(9,yue);
}
if(key1num==6)
{
nian--;
write_nian1();
}
}
}
if(key4==0) //走动
{
delayms(5);
if(key4==0)
{
key1num=0;
write_com(0x0c);//取消光标闪烁
TR0=1;
}
while(!key3);
}
}
}
void T0_time()interrupt 1
{
TH0=(65536-57000)/256;
TL0=(65536-57000)%256;
count++;
if(count==20)
{
count=0;
miao++;
if(miao==60)
{
miao=0;
fen++;
if(fen==60)
{
fen=0;
shi++;
if(shi==24)
{
shi=0;
tian++;
if(tian==tianmax)
{
tian=1;
yue++;
if(yue==13)
{
yue=1;
nian++;
if(nian==9999)
{
nian=0;
}
write_nian1();
}
write_ry(9,yue);
}
write_ry(12,tian);
}
write_sfm(4,shi);
}
write_sfm(7,fen);
}
write_sfm(10,miao);
}
}
void daymax()//最大天数
{
switch(yue)
{
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
tianmax=32;
break;
case 4:
case 6:
case 9:
case 11:
tianmax=31;
break;
case 2:
if((nian%400==0)||(nian%4==0&&nian%100!=0))//判断润平年
{
tianmax=30;
}
else
tianmax=29;
break;
}
}
void main()
{
init();
while(1)
{
daymax();
keyscan();
}
}

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