#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <Servo.h>
#include "DHT.h"

#define DHTPIN 2
#define DHTTYPE DHT11

LiquidCrystal_I2C lcd(0x27, 16, 2);
DHT dht(DHTPIN, DHTTYPE);
Servo myservo;
int maxAngl = 60;
float setTemp = 24.00;
int flag = 0;
int oflag = 0;

void setup() {
  Serial.begin(9600);
  lcd.init();
  lcd.init();
  lcd.backlight();
  myservo.attach(5);
  dht.begin();
}

void loop() {
  float t = dht.readTemperature();
  Serial.println(t);
  lcd.setCursor(0, 0);
  lcd.print("Temp: ");
  lcd.print(t);
  lcd.print(" 'C");
  if (t > setTemp) {
    if (oflag == 0) {
      openWindow();
      delay(5000);
      oflag = 1;
    }
    else {
      myservo.write(maxAngl);
    }
    lcd.setCursor(0, 1);
    lcd.print("Window is OPEN");
    flag = 1;
  }
  else if (t <= setTemp) {

    if (flag == 1) {
      closeWindow();
      delay(5000);
      flag = 0;
      oflag = 0;
    }
    else {
      myservo.write(0);
    }
    lcd.setCursor(0, 1);
    lcd.print("Window is CLOSED");
  }

}//end of Loop

void openWindow() {
  for (int i = 0; i <= maxAngl; i++) {
    myservo.write(i);
    delay(50);
  }
}

void closeWindow() {
  for (int j = maxAngl; j >= 0; j--) {
    myservo.write(j);
    delay(50);
  }
}