#include <Wire.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);

const int pirPin = 13;
const int resetPin = 12;
int visitorCount = 0;
bool lastSensorState = LOW;
bool allowSensor = true;

void setup() {
  pinMode(pirPin, INPUT);
  pinMode(resetPin, INPUT_PULLUP);

  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("pengunjung: 0");
}

void loop() {
  bool sensorState = digitalRead(pirPin);

  if (allowSensor && sensorState == HIGH && lastSensorState == LOW) {
    visitorCount++;
    lcd.setCursor(0, 0);
    lcd.print("                ");  // Clear line
    lcd.setCursor(0, 0);
    lcd.print("pengunjung: ");
    lcd.print(visitorCount);
    delay(500);  // debounce delay
  }

  lastSensorState = sensorState;

  // Reset tombol ditekan
  if (digitalRead(resetPin) == LOW) {
    visitorCount = 0;
    

    lcd.setCursor(0, 0);
    lcd.print("                ");
    lcd.setCursor(0, 0);
    lcd.print("pengunjung: 0");

    delay(500);  // waktu stabilisasi sensor
    allowSensor = true;
  }
}