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

LiquidCrystal_I2C lcd(0x27, 20, 4);

#define DHTPIN 2     
#define DHTTYPE DHT22   // DHT 22  (AM2302), AM2321
#define SPEAKER_PIN 10

const int LED_PIN1 = 13;
const int LED_PIN2 = 12;
const int LED_PIN3 = 11;
const int suhu1 = 40;
const int suhu2 = 35;
const int suhu3 = 29;
String status;
float humidity, temperature;
DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(115200);
  Serial.println(F("DHT22 example!"));
  pinMode(SPEAKER_PIN, OUTPUT);

  dht.begin();

  lcd.init();
  lcd.backlight();
}

void loop() {
  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();
  

  // Check if any reads failed and exit early (to try again).
  if (isnan(temperature) || isnan(humidity)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }

  if (temperature <= suhu3) {
    digitalWrite(LED_PIN1, LOW);
    digitalWrite(LED_PIN2, LOW);
    digitalWrite(LED_PIN3, HIGH);
    status = "Suhu Rendah";
  }
  else if (temperature <= 35) {
    digitalWrite(LED_PIN1, LOW);
    digitalWrite(LED_PIN2, HIGH);
    digitalWrite(LED_PIN3, LOW);
    status = "Suhu Cukup";
  }
  else {
    digitalWrite(LED_PIN1, HIGH);
    digitalWrite(LED_PIN2, LOW);
    digitalWrite(LED_PIN3, LOW);
    status = "Suhu Tinggi";
    
  }

  Serial.print(F("Humidity: "));
  Serial.print(humidity);
  Serial.print(F("%  Temperature: "));
  Serial.print(temperature);
  Serial.println(F("°C "));

  // Wait a few seconds between measurements.
  delay(2000);

  lcd.setCursor(2,1);
  lcd.print(status);
  
  lcd.setCursor(5,0);
  lcd.print(temperature);

}