1602液晶显示可调节时间日期的数字时钟程序

光电显示

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描述

本文为大家分享一个可通过按键来调节时间的1602液晶显示的数字时钟程序。

详细程序

/***************************************

程序功能:

LCD液晶显示屏显示时钟并且可以修改时间

***************************************/

#include《reg52.h》

#define uint unsigned int

#define uchar unsigned char

sbit K1=P1^0;//设置三个独立键盘

sbit K2=P1^3;

sbit K3=P1^5;

sbit lcdwrite=P2^5;

sbit lcddatecommand=P2^6;

sbit lcde=P2^7;

uchar code firstline[]=“2013-06-03”;

uchar code secondline[]=“00-00-00”;

uchar i;

uchar hour,minutes,seconds;

uchar count,num;

uchar cnt;

void delay(uint z)

{

uint x,y;

for(x=z;x》0;x--)

{

for(y=0;y《=112;y++)

{

}

}

}

void write_command(uchar command)

{

lcddatecommand=0;

lcdwrite=0;

P0=command;

delay(1);

lcde=1;

delay(1);

lcde=0;

}

void write_date(uchar date)

{

lcddatecommand=1;

lcdwrite=0;

P0=date;

delay(1);

lcde=1;

delay(1);

lcde=0;

}

void LCDinit()

{

lcde=0;

write_command(0x38);//设置16*2显示,5*7点阵,8位数据接口

write_command(0x0f);//设置开显示,不显示光标

write_command(0x06);// 写一个字符后地址指针加1

write_command(0x80);

for(i=0;i《10;i++)

{

write_date(firstline[i]);

delay(1);

}

write_command(0x80+0x40);

for(i=0;i《8;i++)

{

write_date(secondline[i]);

delay(1);

}

}

void Time0init()

{

TMOD=0x01;//开启定时器1

TH0=(65536-50000)/256;

TL0=(65536-50000)%256;

EA=1;

ET0=1;

TR0=1;

}

void Clockinit()

{

hour=0;

minutes=0;

seconds=0;

count=0;

num=0;

}

void display(uchar hour,uchar minutes,uchar seconds)//接收并发送数据到液晶屏幕

{

uchar hourge,hourshi,minutesshi,minutesge,secondsshi,secondsge;

hourshi=hour/10;

hourge=hour%10;

write_command(0x80+0x40);

write_date(hourshi+48);

delay(1);

write_date(hourge+48);

delay(1);

minutesshi=minutes/10;

minutesge=minutes%10;

write_command(0x80+0x43);

write_date(minutesshi+48);

delay(1);

write_date(minutesge+48);

delay(1);

secondsshi=seconds/10;

secondsge=seconds%10;

write_command(0x80+0x46);

write_date(secondsshi+48);

delay(1);

write_date(secondsge+48);

delay(1);

}

void revise()

{

if(K1==0)

{

delay(5);

if(K1==0)

{

cnt++;//计数第几次按下

TR0=0;

}

while(!K1);

delay(5);

while(!K1);

}

if(cnt==1)//第一次按下,调整秒钟,调整时秒钟有光标闪烁

{

write_command(0x80+0x46);

write_command(0x0f);

if(K2==0)

{

delay(5);

if(K2==0)

{

seconds++;

if(seconds==60)

{

seconds=0;

}

}

while(!K2);

delay(5);

while(!K2);

}

if(K3==0)

{

delay(5);

if(K3==0)

{

seconds--;

if(seconds==-1)//here is a bug

{

seconds=59;

}

}

while(!K3);

delay(5);

while(!K3);

}

}

if(cnt==2)//第二次按下,调整分钟,调整时秒钟有光标闪烁

{

write_command(0x80+0x43);

write_command(0x0f);

if(K2==0)

{

delay(5);

if(K2==0)

{

minutes++;

if(minutes==60)

{

minutes=0;

}

}

while(!K2);

delay(5);

while(!K2);

}

if(K3==0)

{

delay(5);

if(K3==0)

{

minutes--;

if(minutes==-1)//here is a bug

{

minutes=59;

}

}

while(!K3);

delay(5);

while(!K3);

}

}

if(cnt==3)//第三次按下,调整时钟,调整时秒钟有光标闪烁

{

write_command(0x80+0x40);

write_command(0x0f);

if(K2==0)

{

delay(5);

if(K2==0)

{

hour++;

if(hour==24)

{

hour=0;

}

}

while(!K2);

delay(5);

while(!K2);

}

if(K3==0)

{

delay(5);

if(K3==0)

{

hour--;

if(hour==-1)//here is a bug

{

hour=23;

}

}

while(!K3);

delay(5);

while(!K3);

}

}

if(cnt==4)

{

TR0=1;

cnt=0;

}

}

void main()

{

LCDinit();

Time0init();

Clockinit();

while(1)

{

revise();

display(hour,minutes,seconds);

}

}

void Time0() interrupt 1

{

TH0=(65536-50000)/256;

TL0=(65536-50000)%256;

count++;

if(count==20)

{

count=0;

seconds++;

if(seconds==60)

{

seconds=0;

minutes++;

if(minutes==60)

{

minutes=0;

hour++;

if(hour==24)

{

hour=0;

}

}

}

}

}

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