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 charuint num,A_num,x,y=0;uint h,m,s,year=,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);//}
