学校的一个课设
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1 LCD电子时钟设计 1、 制作一个基于LCD显示的电子钟，在LCD显示器上显示当前时间。 2、 使用字符型LCD显示器显示时间。 3、 显示格式:“时时:分分:秒秒”。 4、 用4个功能键操作来设置当前时间。功能键K1~K4功能如下： （1） K1：进入设置现在时间； （2） K2：修改小时，并显示修改结果； （3） K3：修改分钟，并显示修改结果； （4） K4：确认完成设置。
代码
#include<reg52.h>
#include<stdlib.h>
#include<stdio.h>
#include<intrins.h>
#define uint unsigned int
#define uchar unsigned char
uint num
,A_num
,x
,y
=0;
uint h
,m
,s
,year
=2020,month
=7,day
=4,lcd_x
=0,lcd_y
=0;
uchar code Zifu
[]="0123456789";
sbit LCD_EN
= P3
^4;
sbit LCD_RS
= P3
^5;
sbit key_A
= P1
^0;
sbit key_B
= P1
^1;
sbit key_C
= P1
^2;
sbit key_D
= P1
^3;
void delay_1ms(uchar x
){
uchar i
,j
;
for(j
=0;j
<x
;j
++)
for(i
=0;i
<110;i
++);
}
void write_command(uchar command
){
LCD_RS
= 0;
LCD_EN
= 0;
P0
= command
;
delay_1ms(2);
LCD_EN
= 1;
delay_1ms(2);
LCD_EN
= 0;
}
void write_data(uchar fuck
){
LCD_RS
= 1;
LCD_EN
= 0;
P0
= fuck
;
delay_1ms(2);
LCD_EN
= 1;
delay_1ms(2);
LCD_EN
= 0;
}
void lcd_post(int X
,int Y
){
write_command(0x80+X
*(0x40)+Y
);
}
void init(){
h
=m
=s
=0;
num
=A_num
=0;
LCD_EN
=0;
write_command(0x38);
write_command(0x0c);
write_command(0x01);
TMOD
= 0x02;
TH0
= 6;
TL0
= 6;
EA
= 1;
ET0
= 1;
TR0
= 1;
lcd_post(0,0); write_data(Zifu
[h
/10]);
lcd_post(0,1); write_data(Zifu
[h
%10]);
lcd_post(0,2); write_data(':');
lcd_post(0,3); write_data(Zifu
[m
/10]);
lcd_post(0,4); write_data(Zifu
[m
%10]);
lcd_post(0,5); write_data(':');
lcd_post(0,6); write_data(Zifu
[s
/10]);
lcd_post(0,7); write_data(Zifu
[s
%10]);
lcd_post(1,6); write_data(Zifu
[year
/1000]);
lcd_post(1,7); write_data(Zifu
[(year
%1000)/100]);
lcd_post(1,8); write_data(Zifu
[(year
%100)/10]);
lcd_post(1,9); write_data(Zifu
[year
%10]);
lcd_post(1,10); write_data('-');
lcd_post(1,11); write_data(Zifu
[month
/10]);
lcd_post(1,12); write_data(Zifu
[month
%10]);
lcd_post(1,13); write_data('-');
lcd_post(1,14); write_data(Zifu
[day
/10]);
lcd_post(1,15); write_data(Zifu
[day
%10]);
}
void keyscan(){
if(key_A
==0){
delay_1ms(3);
if(key_A
==0){
m
=(++m
)%60;
lcd_post(0,3); write_data(Zifu
[m
/10]);
lcd_post(0,4); write_data(Zifu
[m
%10]);
while(!key_A
);
}
}
if(key_B
==0){
delay_1ms(3);
if(key_B
==0){
h
=(++h
)%24;
lcd_post(0,0); write_data(Zifu
[h
/10]);
lcd_post(0,1); write_data(Zifu
[h
%10]);
while(!key_B
);
}
}
}
void main()
{
init();
y
= 0;
while(1){
if(key_D
==0){
delay_1ms(3);
if(key_D
==0){
y
= 1;
}
while(!key_D
);
}
if(key_C
==0){
delay_1ms(3);
if(key_C
==0){
y
= 0;
}
while(!key_C
);
}
if(num
==3686){
num
=0;
s
++;
if(s
==60){
s
=0;
m
++;
if(m
==60){
m
=0;
h
++;
if(h
==24)h
=0;
lcd_post(0,0); write_data(Zifu
[h
/10]);
lcd_post(0,1); write_data(Zifu
[h
%10]);
}
lcd_post(0,3); write_data(Zifu
[m
/10]);
lcd_post(0,4); write_data(Zifu
[m
%10]);
}
lcd_post(0,6); write_data(Zifu
[s
/10]);
lcd_post(0,7); write_data(Zifu
[s
%10]);
}
if(y
== 1)
{
keyscan();
}
}
}
void T0_time() interrupt
1
{
num
++;
}
