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


#define SCREEN_WIDTH 128   // OLED display width, in pixels
#define SCREEN_HEIGHT 64   // OLED display height, in pixels
#define OLED_RESET 4       // Reset pin # (or -1 if sharing reset pin)
#define BuzzerPin 7
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

 int LED1 = 5;
 int LED2 = 4;
 int val = 2;

void setup() {
  display.begin(SSD1306_DISPLAYON, 0x3C);
  display.display();  // Inisialisasi tampilan dengan tampilan kosong
  delay(2000);        // Tunggu 2 detik
  display.clearDisplay();  // Hapus tampilan setelah ditunggu
  display.setTextSize(2);
  display.setTextColor(SSD1306_WHITE);
  pinMode (val, INPUT);
  pinMode(BuzzerPin, OUTPUT);
  pinMode (LED1, OUTPUT);
  pinMode (LED2, OUTPUT);
  Serial.begin (9600);
}


void loop() {
  int sensordata = digitalRead(val);
  Serial.print("Nilai LDR: ");
  Serial.print(sensordata);
  Serial.println("");
  if (sensordata == 0) {
      noTone(BuzzerPin);
      digitalWrite(5, HIGH);  // LED ON
      digitalWrite(4, LOW);  // LED O
      display.clearDisplay();
      display.setCursor(0, 15);
      display.print("TERANG");
      display.display();
      delay(1000);
  } else if (sensordata == 1) {
      tone(BuzzerPin, 200);
      digitalWrite(5, LOW);  
      digitalWrite(4, HIGH);  
      display.clearDisplay();
      display.setCursor(0, 15);
      display.print("GELAP");
      display.display();
     delay(1000);  
    }
}