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//8563时钟模块、DHT11模块。
//在LCD上显示时钟和日历，温度和湿度。通过确认键切换显示内容。#include <Rtc Pcf8563.h>
#include <Liquidcrystal.h>
#include"dht11.h”
Rtc_Pcf8563rtc; //定义一个对象rtc
dht11 DHT11;
#define DHT11PIN2 //定义DHT11模块引脚
//LCD1602 引脚
const intrs=8, en=9, d4= 4, d5= 5，d6= 6，d7=7；//LCD1602引脚
LiquidCrystallcd(rs, en, d4, d5, d6, d7)；
byte day, weekday, month, century, year; //定义日期变量
byte hr, minute, sec； //定义时间变量
char time_str[16]; //时间
char data str[16] ; //日历
char strout [8];
char time_Out[16];
intkey_in = A0; //模拟量按键
intkey_v[4]= (0x2D,0x13，0x8，0x00 )；//预存键值
intflag=0; //显示时钟状态
intflag1= 0xff; //初始没有按键状态
int key; //按键
int key1; //防止重键
String week[7] ={"Mon","Tue ", "Wed ","Thur", "Fri","sat ", "Sun "};
byte Centigrade[8]={ //定义C显示符号
B10000，
B00110，
B01001,
B01000,
B01000,
B01001,
B00110,
B00000
}；
void setup() {
lcd.begin(16,2)； //液晶初始化
lcd.createChar(0, Centigrade); //在地址0创造C字符
getclock(); //读取当前时钟
}
void loop() { //主循环函数
read key();
if(key != 0)
{
switch (key)(
case l: Select(); break; //选择键
case 2: Reduce(); break; //增加键
case3:Increase(); break; //减少键
case 4: Return(); break; //确认键
}
key =0;
}
if (flag == 0)
time display();
else if (flag ==1)
temp display();
else if(flag == 2)
set display();
}
void getclock(){ //读日历、时钟
rtc.getDateTime();
sec = rtc.getSecond();
minute = rtc.getMinute();
hr=rtc.getHour();
day = rtc.getDay();
month = rtc.getMonth();
year = rtc.getYear();
weekday = rtc.getWeekday();
}
voidset display() {//参数修改状态，在相应位置光标闪烁
lcd.cursor();
lcd.blink();
if (flagl != 0xff) {
switch (flag1) {
case 0: 1cd.setCursor(10,0);lcd.print(sec /10)；lcd.print(sec % 10);1cd.setCursor(11, 0); break;
case 1: 1cd.setCursor(7, 0)；1cd.print(minute / 10); 1cd.print(minute /10);lcd.setCursor(8, 0);break;
case 2: lcd.setCursor(4, 0)；lcd.print(hr /10); lcd.print(hr % 10); 1cd.setCursor(5, 0); break;
case 3: lcd.setCursor(12,1);1cd.print(week[weekday -1]);1cd.setCursor(15,1);break;
case 4:lcd.setCursor(8, 1);lcd.print(day/ 10)；lcd.print(day % 10)；1cd.setCursor(9, 1);break;
case5:lcd.setCursor(5, 1);1cd.print(month /10)；lcd.print(month % 10);lcd.setCursor(6, 1); break;
case6:lcd.setCursor(0,1)；lcd.print("20")；lcd.print(year/10)；lcd.print(year810);lcd.setCursor(3,1); break;
}
}
}
void time_display() //显示日历、时钟
{
lcd.noCursor();
lcd.noBlink();
lcd.setCursor(4, 0);
lcd.print(rtc.formatTime());
lcd.setCursor(0,1);
lcd.print(rtc.formatDate(RTCC_DATE_ASIA));
lcd.setCursor(12,1);
lcd.print(week[rtc.getWeekday() -1]);
}
void temp_display() { //温湿度显示
DHT11.read(DHT11PIN);
int temperature = DHT11.temperature; //温度
int humidity = DHT11.humidity; //湿度
lcd.setCursor(4, 0);
lcd.print("T=");
lcd.print(temperature);
lcd.write(byte(0));
lcd.print("");
lcd.setCursor(4, 1);
lcd.print("H=");
lcd.print(humiditv);
lcd.print("% ")；
}
void read_key() { //读按键
int key_Value = analogRead(A0) >> 4; //读取AD高8位
if(key Value != 0x3f) { //无键按下时键值是0x3f
delay(120);
key Value = analogRead(key_in) >> 4;
if(key_Value != 0x3f) {
for (int i= 0; i < 4; i++) {
if (key_Value >= key_v[i] -1 && key_Value <= key_v[i]+ 1) //取一个范围
key=i +1; //键值从1开始
}
}
if (key1 != key) //防止连键
keyl = key;
else
key=0；
}
}
void Select() { //参数修改键
getclock()；
rtc.setDateTime (day, weekday, month, 0, year, hr, minute, sec);
if (flag == 1) {
flag = 0;
}
else {
flag=2;
if (flag1==0xff)
flaq1= 0;
elseif (flag1 < 6){
flag1 +=1;
rtc.setDateTime(day, weekday, month, 0, year, hr, minute, sec);
}
else flagl=0；
}
}
void Reduce() { //减少键
if (flag1 ！=0xff) {
switch (flag1) {
case 0: if(sec == 0) sec = 59; else sec -= 1; break;
case l: if(minute==0) minute = 59; else minute -= 1; break;
case 2: if(hr== 0) hr=23; else hr -= 1; break;
case 3: if (weekday==1) weekday =7; else weekday -= 1;break;
case 4: if (day==1) day = 31;else day -= 1; break;
case 5: if(month == 1) month = 12;else month -= 1; break;
case 6: if(year == 0) year = 99;else year -= 1; break;
}
rtc.setDateTime (day, weekday, month, 0, year, hr, minute, sec);
}
}
void Increase() {//增加键
if (flag1！=0xff) {
switch(flag1) {
case 0: if (sec == 59) sec =0; else sec += 1; break;
case 1：if (minute ==59) minute = 0; else minute += 1; break;
case 2：if (hr == 23) hr=0; else hr +=1；break;
case 3: if (weekday ==7) weekday = 1; else weekday += 1;break;
case 4：if (day ==31) day =1;else day += 1; break;
case 5: if (month == 12)month = 1; else month += 1; break;
case 6: if (year == 99) year = 0; else year += 1; break;
}
rtc.setDateTime(day, weekday, month, 0, year, hr, minute, sec);一
}
}
void Return() {//确认键
if (flag1 != Oxff) {
rtc.setDateTime (day, weekday, month, 0, year, hr, minute, sec);
flagl = 0xff;
flag = 0;
}
else {
flag =!flag;
lcd.clear();
flagl=0xff;
}
}
