#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <DHTesp.h>
#define led_merah 5
#define led_kuning 4
#define led_biru 2
#define buzzer 18


#define LEBAR_LAYAR 128 // Lebar layar OLED yang digunakan
#define TINGGI_LAYAR 64 // Tinggi layar OLED yang digunakan

Adafruit_SSD1306 oled(LEBAR_LAYAR, TINGGI_LAYAR, &Wire, -1);

const int DHT_PIN = 15;
DHTesp dhtSensor;

void setup()
{
  Serial.begin(9600);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
    // initialize OLED display with I2C address 0x3C
  if (!oled.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("failed to start SSD1306 OLED"));
    while (1);
  }
  
  delay(2000);         
  oled.clearDisplay();         //clear display
  oled.setTextSize(1);         //Atur ukuran text
  oled.setTextColor(WHITE);    //Atur warna text
  oled.display();              //menampilkan display OLED
  
}

void loop()
{
  pinMode(led_merah, OUTPUT);
  pinMode(led_kuning, OUTPUT);
  pinMode(led_biru, OUTPUT);
  pinMode(buzzer, OUTPUT);
  float suhu = dhtSensor.getTemperature(); //ambil nilai suhu dlm bentuk float
  float lembab = dhtSensor.getHumidity(); //ambil nilai kelembaban dlm bentuk float
  //TempAndHumidity  data = dhtSensor.getTempAndHumidity();
  //Serial.println("Suhu: " + String(data.temperature, 2) + "°C"); //merubah nilai suhu ke string
  //Serial.println("Kelembaban: " + String(data.humidity, 1) + "%"); //merubah nilai kelembaban ke string
  //String suhu = String(data.temperature, 2); atau String suhu = String(dhtSensor.getTemperature(), 2);
  //String lembab = String(data.humidity, 2); atau String lembab = String(dhtSensor.getHumidity(), 2);
  Serial.print("Suhunya = ");
  Serial.println(suhu);
  Serial.print("Kelembabannya = ");
  Serial.println(lembab);
  delay(1000);
    oled.clearDisplay();        //clear display
    oled.setCursor(0, 5);       //Atur posisi text pada display
    oled.print("Suhu: ");       //cetak text ke oled
    oled.print(suhu);           //cetak nilai suhu
    oled.print(" °C");          //cetak text ke oled
    

  if(suhu < 29)
    {
      digitalWrite(led_biru, HIGH);
      digitalWrite(led_merah, LOW);
      digitalWrite(led_kuning, LOW);
      oled.setCursor(0,25);
      oled.println("SUHU RENDAH"); //cetak text ke oled
      oled.display();              //menampilkan display OLED
    }
  else if(suhu < 35)
    {
      digitalWrite(led_kuning, HIGH);
      digitalWrite(led_merah, LOW);
      digitalWrite(led_biru, LOW);
      oled.setCursor(0,25);
      oled.println("SUHU CUKUP");  //cetak text ke oled
      oled.display();              //menampilkan display OLED
    }
  else
    {
      digitalWrite(led_merah, HIGH);
      digitalWrite(led_kuning, LOW);
      digitalWrite(led_biru, LOW);
      oled.setCursor(0,25);
      oled.println("SUHU PANAS");  //cetak text ke oled
      oled.display();              //menampilkan display OLED
      tone(buzzer, 800, 300);     //bunyi buzzer
      delay(500);
      tone(buzzer, 800, 300);     //ulangi bunyi buzzer
      delay(500);
    }

}