#include <LiquidCrystal_I2C.h>
#include <Adafruit_Sensor.h>
#include <DHT.h>
#include <DHT_U.h>
#define dhtSensor 6
#define temp 9
LiquidCrystal_I2C lcd(0x27, 20, 4);
DHT dhtS(dhtSensor, DHT22);

void setup() {
  pinMode(temp, INPUT);
  pinMode(dhtSensor, INPUT);

  // LCD SETUP
  lcd.begin(20, 4);
  lcd.backlight();
}

void display(float hum, float tem, float PPM) {
  // Print humidity
  lcd.setCursor(0, 0);
  lcd.printstr("Humidity: ");
  lcd.setCursor(10, 0);
  lcd.print(hum);
  lcd.setCursor(15, 0);
  lcd.print('%');

  // Print temperature
  lcd.setCursor(0, 1);
  lcd.printstr("Temperature: ");
  lcd.setCursor(13, 1);
  lcd.print(int(tem));
  lcd.setCursor(15, 1);
  lcd.print("oC");

  lcd.setCursor(0, 2);
  lcd.printstr("Smoke in PPM: ");
  lcd.setCursor(13, 2);
  lcd.print(PPM);
}

void displayCleaning() {
  lcd.setCursor(4, 0);
  lcd.printstr("Cleaning");
  for(int i = 0; i < 2; ++i) {
    lcd.setCursor(4 + i, 0);
    lcd.print('.');
  }
  delay(5 * 1000);
}

void loop() {
  display(dhtS.readHumidity(), dhtS.readTemperature(), analogRead(temp));
  if(digitalRead(2) == HIGH) {

  }
}