单片机+Ds1302+lcd1602万年历，可设置时间 -

//此为主程序，查看完成下载附件，包含仿真，可运行
#include "reg52.h"
#include "main.h"
#include "LCD1602.h" //显示模块函数在LCD1602.c文件中
//屏幕中第一行和第二行显示的框架
code char lcd_line[2][16]={
"Date 20__-__-__ ", //显示日期
"Time __:__:__ ", //显示时间
};
//按键
sbit S1 = P3^1; //设置
sbit S2 = P3^5; //加
sbit S3 = P3^6; //减
//当前时间
char time_hour=23;
char time_min=59;
char time_sec=55;
char time_year=18;
char time_month=6;
char time_day=30;
uchar mode = 0; //当前模式
//STC89系列单片机延时1ms
void delay_ms(unsigned int x)
{
char j=0;
while(x--)
for(j=0;j<125;j++)
;
}
//读取时间数据
void read_ds1302_all()
{
time_hour = ds1302_read_hour();//读取小时
time_min = ds1302_read_min();//分钟
time_sec = ds1302_read_sec(); //秒钟
time_year = ds1302_read_year();
time_month = ds1302_read_month();
time_day = ds1302_read_day();
}
//显示
void display_time()
{
//时分秒
lcd_write_char(6,1,time_hour/10+'0');
lcd_write_char(7,1,time_hour%10+'0');
lcd_write_char(9,1,time_min/10+'0');
lcd_write_char(10,1,time_min%10+'0');
lcd_write_char(12,1,time_sec/10+'0');
lcd_write_char(13,1,time_sec%10+'0');
//年月日
lcd_write_char(7,0,time_year/10+'0');
lcd_write_char(8,0,time_year%10+'0');
lcd_write_char(10,0,time_month/10+'0');
lcd_write_char(11,0,time_month%10+'0');
lcd_write_char(13,0,time_day/10+'0');
lcd_write_char(14,0,time_day%10+'0');
}
//按键扫描
char key_scan()
{
if(S1==0 || S2==0 || S3==0) // 如果按下了
{
delay_ms(5); //去抖动
if(S1==0 || S2==0 || S3==0) //确实按下了
{
if(S1==0){while(S1==0); return 1;} //按键1确实按下了。依此类推。
if(S2==0){while(S2==0); return 2;} //
if(S3==0){while(S3==0); return 3;} //
}
}
return 0; //没有按键按下
}
//按键动作
void key_action()
{
char key=0;
key=key_scan();
if(key == 0) return;
if(key==1)
{
mode++;
if(mode > 6)
{
mode = 0;
lcd_write(0,0x0c);//显示器开，光标关，字符不闪烁
}
}
switch(mode)
{
case 1: //秒
{
lcd_write(0,0x0f); //光标闪烁
lcd_write(0,0x80+0x40+13); //位置
if(key==2){time_sec++;} //秒++
if(key==3){time_sec--;} //秒--
if(time_sec>=60){time_sec=0;}
if(time_sec<0){time_sec=59;}
lcd_write_char(12,1,time_sec/10+'0'); //显示
lcd_write_char(13,1,time_sec%10+'0');
lcd_write(0,0x80+0x40+13); //回到原位
ds1302_set_sec(time_sec );
}
break;
case 2: //分
{
lcd_write(0,0x0f); //光标闪烁
lcd_write(0,0x80+0x40+10); //定位
if(key==2){time_min++;} //分++
if(key==3){time_min--;} //分--
if(time_min>=60){time_min=0;}
if(time_min<0){time_min=59;}
lcd_write_char(9,1,time_min/10+'0'); //显示
lcd_write_char(10,1,time_min%10+'0');
lcd_write(0,0x80+0x40+10); //回到原位
ds1302_set_min(time_min );
}
break;
case 3: //时
{
lcd_write(0,0x0f); //光标闪烁
lcd_write(0,0x80+0x40+7); //定位
if(key==2){time_hour++;} //时++
if(key==3){time_hour--;} //时--
if(time_hour>=24){time_hour=0;}
if(time_hour<0){time_hour=23;}
lcd_write_char(6,1,time_hour/10+'0'); //显示
lcd_write_char(7,1,time_hour%10+'0');
lcd_write(0,0x80+0x40+7); //回到原位
ds1302_set_hour(time_hour);
}
break;
case 4: //年
{
lcd_write(0,0x0f);
lcd_write(0,0x80+8);
if(key==2){time_year++;}
if(key==3){time_year--;}
lcd_write_char(7,0,time_year/10+'0');
lcd_write_char(8,0,time_year%10+'0');
lcd_write(0,0x80+8); //回到原位
ds1302_set_year(time_year);
}
break;
case 5: //月
{
lcd_write(0,0x0f);
lcd_write(0,0x80+11);
if(key==2){time_month++;}
if(key==3){time_month--;}
if(time_month>12){time_month=1;}
if(time_month<0){time_month=12;}
lcd_write_char(10,0,time_month/10+'0');
lcd_write_char(11,0,time_month%10+'0');
lcd_write(0,0x80+11); //回到原位
ds1302_set_month(time_month);
}
break;
case 6: //日
{
lcd_write(0,0x0f);
lcd_write(0,0x80+14);
if(key==2){time_day++;}
if(key==3){time_day--;}
//判断28天30天或31天
if(time_min==2) //2月28天
{
if(time_day>28){time_day=0;}
if(time_day<0){time_day=28;}
}
if(time_month==4 || time_month==6 || time_month==9 || time_month==11) //30天
{
if(time_day>30){time_day=0;}
if(time_day<0){time_day=30;}
}
if(time_month==1 || time_month==3 || time_month==5 || time_month==7 || time_month==8 || time_month==10 || time_month==12 ) //31天
{
if(time_day>31){time_day=0;}
if(time_day<0){time_day=31;}
}
lcd_write_char(13,0,time_day/10+'0');
lcd_write_char(14,0,time_day%10+'0');
lcd_write(0,0x80+14); //回到原位
ds1302_set_day(time_day);
}
break;
}
}
//主程序
void main()
{
lcd_init();//LCD1602液晶显示屏初始化
ds1302_init();
lcd_write_line(0,lcd_line[0]);//屏幕显示第一行框架
lcd_write_line(1,lcd_line[1]);//屏幕显示第二行框架
ds1302_set_sec(time_sec);
ds1302_set_min(time_min);
ds1302_set_hour(time_hour);
//
ds1302_set_day(time_day);
ds1302_set_month(time_month);
ds1302_set_year(time_year);
//主循环
while(1)
{
key_action();
if(!mode) //没有进入设定时间
{
read_ds1302_all(); //显示年月日时分秒
display_time(); //显示
}
else //读回设定时间
{
ds1302_set_sec(time_sec);
ds1302_set_min(time_min);
ds1302_set_hour(time_hour);
//
ds1302_set_day(time_day);
ds1302_set_month(time_month);
ds1302_set_year(time_year);
}
}
}
////////////////////////////////////

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