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#include<reg51.h>
#define uint unsigned int
#define uchar unsigned char
sbit wela=P2^7;
sbit dula=P2^6;
sbit lcdrs=P2^1;
sbit lcden=P1^6;
sbit lcdrw=P1^5;
sbit shezhi=P3^2;
sbit jia=P3^3;
sbit jian=P3^4;
uchar count,num;
char shi,fen,miao;
uchar code table[]=" 2012.11.1 Wed";
uchar code table1[]=" 00:00:00 ";
void delay(uint z)
{
uint x,y;
for(x=0;x<z;x++)
for(y=0;y<110;y++);
}
voidwrite_com(uchar com)
{
lcdrs=0;
lcdrw=0;
lcden=0;
P0=com;
delay(5);
lcden=1;
delay(5);
lcden=0;
}
voidwrite_data(uchardate)
{
lcdrs=1;
lcdrw=0;
lcden=0;
P0=date;
delay(5);
lcden=1;
delay(5);
lcden=0;
}
voidinit()
{
uchar num;
dula=0;
wela=0;
lcden=0;
write_com(0x38); //功能設(shè)置，8位數(shù)據(jù)接口，2行顯示，5*7點(diǎn)陣
write_com(0x0c); //顯示開(kāi)關(guān)控制，開(kāi)顯示，關(guān)光標(biāo)，關(guān)閃爍
write_com(0x06); //輸入方式設(shè)置，AC自動(dòng)增一，畫(huà)面不動(dòng)
write_com(0x01); //清屏
write_com(0x80); //首地址為第一行
for(num=0;num<15;num++)
{
write_data(table[num]);
delay(20);
}
write_com(0x80+0x40);//第二行
for(num=0;num<15;num++)
{
write_data(table1[num]);
delay(20);
}
/* 定時(shí)器做中斷設(shè)置*/
TMOD=0X01; //定時(shí)器0的方式1
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
EA=1;
ET0=1;
TR0=1;
}
/*刷新地址及數(shù)據(jù)*/
void write_sfm(uchar
add,uchar date)
{
uchar shi,ge;
shi=date/10;
ge=date%10;
write_com(0x80+0x40+add);
write_data(0x30+shi);
write_data(0x30+ge);
}
/*功能鍵控制函數(shù)*/
voidkeyscan()
{
if(shezhi==0)
{
delay(5);
if(shezhi==0)
{
num++;
while(!shezhi);
if(num==1)
{
TR0=0;
write_com(0x80+0x40+10);
write_com(0x0f);
}
if(num==2)
{
write_com(0x80+0x40+7);
}
if(num==3)
{
write_com(0x80+0x40+4);
}
if(num==4)
{
num=0;
write_com(0x0c);
TR0=1;
}
}
}
if(shezhi!=0)
{
if(jia==0)
{
delay(5);
if(jia==0)
{
while(!jia);
if(num==1)
{
miao++;
if(miao==60)
miao=0;
write_sfm(10,miao);
write_com(0x80+0x40
+10);
}
if(num==2)
{
fen++;
if(fen==60)
fen=0;
write_sfm(7,fen);
write_com(0x80+0x40+7);
}
if(num==3)
{
shi++;
if(shi==24)
shi=0;
write_sfm(4,shi);
write_com(0x80+0x40+4);
}
}
}
if(jian==0)
{
delay(5);
if(jian==0)
{
while(!jian);
if(num==1)
{
miao--;
if(miao==-1)
miao=59;
write_sfm(10,miao);
write_com(0x80+0x40+10);
}
if(num==2)
{
fen--;
if(fen==-1)
fen=59;
write_sfm(7,fen);
write_com(0x80+0x40+7);
}
if(num==3)
{
shi--;
if(shi==-1)
shi=23;
write_sfm(4,shi);
write_com(0x80+0x40+4);
}
}
}
}
}
/*主函數(shù)*/
void main()
{
init();
while(1)
{
keyscan();
}
}
/*定時(shí)器中斷函數(shù)*/
oid timer0()interrupt 1
{
TH0=(65536-50000)/256;
TL0=(65536-50000)%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;
}
write_sfm(4,shi); //時(shí)時(shí)鐘動(dòng)作
}
write_sfm(7,fen); //分時(shí)鐘動(dòng)作
}
write_sfm(10,miao); //秒時(shí)鐘動(dòng)作
}
}

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