#include <Wire.h>
#include <RTClib.h>
char buffer1[20];
char buffer2[20];
const int setpin = 13;
boolean statepin = 0;
RTC_DS1307 RTC;

#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,20,4);

#include "DHT.h"
#define DHTPIN 2
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);
   float h = dht.readHumidity();
  // Read temperature as Celsius (the default)
  float t = dht.readTemperature();
  float hic = dht.computeHeatIndex(t, h, false);




int pulsSU = 3;
int pulsGIU= 4;
int pulsSET =5;
int pulsMENU= 6;

int Ton;
int Toff;
int EXIT;
int umidita;
int temperatura;
int minuti;
int ore;
int step_funzione=0;

void setup() {
  Serial.begin(9600);
Wire.begin();
RTC.begin();
lcd.init();
lcd.backlight();
dht.begin();
pinMode (pulsSU,INPUT);
pinMode (pulsGIU,INPUT);
pinMode (pulsSET,INPUT);
pinMode (pulsMENU,INPUT);
 if (! RTC.isrunning()) {
    RTC.adjust(DateTime(__DATE__, __TIME__));
  }


}

void loop() {

  statepin = digitalRead (setpin);
  if (statepin == LOW)
  {
    RTC.adjust(DateTime(__DATE__, __TIME__));
  }
  DateTime now = RTC.now();
  sprintf(buffer1,  "%02d:%02d:%02d", now.hour(), now.minute(), now.second());
  //lcd.setCursor(0,0);
  //lcd.print( buffer1 );
  sprintf(buffer2,  "%02d/%02d/%d", now.day(), now.month(), now.year());
  //lcd.setCursor(0,1);
  //lcd.print( buffer2 );

  switch (step_funzione) {
    case 0:    // STATO INIZIALE
      INIZIO();
      break;
    case 1:
     set_timeON();

     break;
    case 2:
//      set_timeOFF();
      break;
 //    case 3:
 //     break;
  }
}


  void INIZIO (){
    t = dht.readTemperature();
    h = dht.readHumidity();
lcd.setCursor(6,0);
lcd.print(buffer1);
lcd.setCursor(0,1);
lcd.print("TEMP:       C.");
lcd.setCursor(6,1);
lcd.print(t);
lcd.setCursor(0,2);
lcd.print("UMIDITA':      %");
lcd.setCursor(9,2);
lcd.print(h);



 if(digitalRead(pulsMENU) == HIGH){
  delay(1000);
  //parte statica
  lcd.clear();
  lcd.setCursor(2, 0);
  lcd.print("SET TIME LIGHT-ON");
  step_funzione=1;
 }
 }
 void set_timeON(){
  if(digitalRead(pulsSU) == HIGH) {
    delay(1);
    minuti++;
  }
  if (minuti>59){
    minuti=0;
    ore++;}

  if (ore>23){
    ore=0;}

     lcd.setCursor(7, 2);
  if (ore < 10) lcd.print("0");     // SE LE ORE SONO MENO DI 10, SCRIVI LO ZERO A SINISTRA.
  lcd.print(ore);                   // STAMPA LE ORE
  lcd.print(":");                   // STAMPA I DUE PUNTI
  if (minuti < 10) lcd.print("0");  // SE I MINUTI SONO MENO DI 10, SCRIVI LO ZERO A SINISTRA.
  lcd.print(minuti);

  if (digitalRead(pulsSET)==HIGH);{
     delay(1000);
  lcd.clear();
  lcd.setCursor (1,2);
  lcd.print("TIME-ON IMPOSTATO");
  delay(1000);
  step_funzione=2;}

  if (digitalRead(pulsMENU)==HIGH);{
     delay(1000);
  lcd.clear();
  lcd.setCursor(1,2);
  lcd.print("SET-TIME-ON ANNULLATO");
  delay(1000);
  step_funzione=0;
 }







}