#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <DHT.h>

#define SCREEN_WIDTH 128 // OLED width,  in pixels
#define SCREEN_HEIGHT 64 // OLED height, in pixels
#define DHTPIN 33
#define DHTTYPE DHT22

DHT sensor(DHTPIN, DHTTYPE);

// create an OLED display object connected to I2C
Adafruit_SSD1306 oled(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

void setup() {
  Serial.begin(9600);

  sensor.begin(); //inisialisasi sensor 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(1000);         // wait two seconds for initializing
  oled.clearDisplay(); // clear display

  oled.setTextSize(1);         // set text size
  oled.setTextColor(WHITE);    // set text color
  oled.setCursor(0, 2);       // set position to display (x,y)
  oled.println("Sensor DHT22"); // set text
  oled.display();              // display on OLED
}

void loop() {
  delay(2000); // Tunggu 2 detik antara pembacaan

  float suhu = sensor.readTemperature(); // Baca suhu
  int kelembapan = sensor.readHumidity();

  oled.clearDisplay(); // clear display

  oled.setCursor(0, 2);       // set position to display (x,y)
  oled.print("Temp: ");
  oled.print(suhu); // set text
  oled.println(" Celcius");

  oled.setCursor(0, 20);       // set position to display (x,y)
  oled.print("Hum: ");
  oled.print(kelembapan); // set text
  oled.println("%");

  oled.display();              // display on OLED

}