#include <LiquidCrystal_I2C.h>
#include <Wire.h>
#include <Encoder.h>
#include <RTClib.h>
#include <DHT.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);

#define DHTPIN 7     
#define DHTTYPE DHT22 

DHT dht(DHTPIN, DHTTYPE);

#define pinCLK 2
#define pinDT  3
#define pinSW  4

RTC_DS1307 rtc;

Encoder rotary(pinCLK, pinDT);

void setup() {
  
pinMode(pinSW, INPUT_PULLUP);
  lcd.init();
  lcd.backlight();
 Serial.begin(115200);
  if (! rtc.begin()) {
    lcd.println("Couldn't find RTC");
    lcd.flush();
    abort();
  }
}

void loop() {   
  DateTime now = rtc.now();
  float t_a, h_a, t_s, h_s;
  t_a=dht.readTemperature();
  h_a=dht.readHumidity();
  static long lastCounter = 0;
  long currentCounter = rotary.read() >> 2;
  
  int chec; 
  if(currentCounter>0){
      chec=currentCounter%3;
  }
  else{
      chec=currentCounter%3*(-1);
  }

  if (lastCounter != currentCounter) {
    lcd.setCursor(0, 0);
    lastCounter = currentCounter;
      switch (chec) {
      case 0:
        lcd.clear();
        lcd.print("Air");
        break;
      case 1:
        lcd.clear();
        lcd.print("Soil");
        break;
      case 2:
        lcd.clear();
        lcd.print("Control");
        break;
   }
  }
    if (digitalRead(pinSW) == LOW) {
    rotary.write(0);
    lastCounter = 0;    
    switch (chec) {
      case 0:
        lcd.clear();
        lcd.setCursor(0, 0);
        lcd.print("Temperature=");
        lcd.print(t_a);
        lcd.setCursor(0, 1);
        lcd.print("Humidity=");
        lcd.print(h_a);
        break;
      case 1:
        lcd.clear();
        lcd.setCursor(0, 0);
        lcd.print("Temperature=");
        lcd.setCursor(0, 1);
        lcd.print("Humidity=");
        break;
      case 2:
        lcd.clear();
        lcd.setCursor(0, 0);
        lcd.print(now.hour(), DEC);
        lcd.print(':');
        lcd.print(now.minute(), DEC);
        
        break;
   }
   delay(3000);
  }


}