#include <Wire.h> //library
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h> //driver

#define SCREEN_WIDTH 128  // OLED display width, in pixels
#define SCREEN_HEIGHT 64  // OLED display height, in pixels
#define BUZZER 15

// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins) 
Adafruit_SSD1306 oled(SCREEN_WIDTH, SCREEN_HEIGHT, & Wire, -1); //&wire untuk komuikasi, -1 otomatis

void setup() {
  Serial.begin(115200);
  pinMode(12, INPUT_PULLUP);
  pinMode(BUZZER, OUTPUT);

  if (!oled.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { //memula komunikasi
    Serial.println(F("SSD1306 allocation failed"));
    for (;;);
  }

  oled.clearDisplay();
}

void loop() {
  int PIR = digitalRead(12);
  Serial.println(PIR);

  oled.clearDisplay();

  if (PIR == HIGH) {
    Serial.println("ADA GERAKAN 20210140123");
    oled.setCursor(0, 0);
    oled.setTextSize(1);
    oled.setTextColor(SSD1306_WHITE);
    oled.println("ADA GERAKAN 20210140123");

    tone(BUZZER, 1000); // Membunyikan buzzer dengan tone 1000Hz
    delay(1000);           // Bunyikan selama 500ms
    noTone(BUZZER); 

  } else {
    Serial.println("TIDAK ADA GERAKAN 20210140123");
    oled.setCursor(0, 0);
    oled.setTextSize(1);
    oled.setTextColor(SSD1306_WHITE);
    oled.println("TIDAK ADA GERAKAN 20210140123");
  }

  oled.display();

  delay(1000);}