基于C51单片机的LCD电子时钟设计
程序员文章站
2022-06-08 20:42:30
...
学校的一个课设
可以去"我的下载"直接打包下载
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; //EN ?1 -- 0 ?? ???? ? ??
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){ //0,1?? ??? ? ???
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(0x06); //??????????
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++;
}
// if(key_A==0){ //??????
// delay_1ms(3);
// if(key_A==0){
// }
// while(!key_A);
// }
上一篇: Python入门基础---九九乘法表
下一篇: 为一加7让路 一加6T宣布降价