#include<reg51.h>
#define uchar unsigned char
#define uint unsigned int
sbit lcden=P2^7;
sbit rs=P2^6;
sbit rw=P2^5;
sbit s1=P3^0;
sbit s2=P3^1;
sbit s3=P3^2;
sbit rd=P3^3;
uchar count,shi,fen,miao,s1num;
uchar code table[]=" 2014-3-21 FRI";
uchar code table1[]=" 00:00:00";
void delay(uint z)
{
uint x,y;
for (x=z;x>0;x--)
for (y=110;y>0;y--);
}
void write_com(uchar com)
{
lcden=0;
rs=0;
rw=0;
P0=com;
delay(5);
lcden=1;
}
void write_date(uchar date)
{
lcden=0;
rs=1;
rw=0;
P0=date;
delay(5);
lcden=1;
}
void init()
{
uchar num;
lcden=0;
write_com(0x38);
// delay(5);
write_com(0x0c);
write_com(0x06); //光标
write_com(0x01);//清0;
write_com(0x80);//址址，第一行开始
for(num=0;num<15;num++)
{
write_date(table[num]);
delay(20); //20ms
}
write_com(0x80+0x3f);
for(num=0;num<11;num++)
{
write_date(table1[num]);
delay(20);
}
TMOD=0x01;// 定时器0的方式1;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256; //初值
EA=1;//开定时器0的中断;
ET0=1; //开定时器0;
TR0=1;//启动
}
void write_sfm(uchar add,uchar date)
{
uchar shi,ge;
shi=date/10;
ge=date%10;
write_com(0x80+0x3f+add);
write_date(0x30+shi);
write_date(0x30+ge);
}
void keyscan()
{
rd=0;
delay(5);
if(s1==0)
{
delay(5);
if(s1==0)
{
s1num++;
while(!s1); //待松手
if(s1num==1)
{
TR0=0;//时间停
write_com(0x80+0x40+11); //秒位
write_com(0x0f) ; //显示光标，闪
}
if(s1num==2)
{
write_com(0x80+0x40+8);//分
}
if(s1num==3)
{
write_com(0x80+0x40+5);//小时
}
if(s1num==4)
{
s1num=0;
write_com(0x0c);//光标不闪
TR0=1;//继续走时
}
if(s1num!=0)
{
if(s2==0)
{
delay(5);
if(s2==0)
{
if(s1num==1)
{
miao++;
if(miao==60)
miao=0;
write_com(0x80+0x40+9);//显示更新
write_sfm(9,miao);
}
if(s1num==2)
{
}
if(s1num==3)
{
}
//确定光标在哪个位置
}
}
}
}
}
}
void main()
{
init(); //初始化
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);
}
// while(1);//停此
}
void timer0() interrupt 1 // 定时器0的中断序号
{
TH0=(65536-50000)/256;
TL0=(65536-50000)%256; //初值
count++;
}
