#include <LiquidCrystal_I2C.h>

//declaration of the display
LiquidCrystal_I2C lcd(0x27,16,2);
// Pin configuration
const int buttonPin = D4; // change as needed

// Counter variable
int counter = 0;

// To track the button state
bool lastButtonState = HIGH;

void setup() {
  pinMode(buttonPin, INPUT_PULLUP); // Enable internal pull-up resistor
  Serial.begin(9600);
  // lcd.init(); 
  // lcd.backlight();
  // lcd.setCursor(3,0);
  // lcd.print("Hello, world!");
  // lcd.setCursor(2,1);
  // lcd.print("Ywrobot Arduino!");
}

void loop() {
  bool currentButtonState = digitalRead(buttonPin);

  // Detect falling edge (HIGH to LOW)
  if (lastButtonState == HIGH && currentButtonState == LOW) {
    counter++;
    Serial.print("Button pressed! Count = ");
    Serial.println(counter);
    delay(200); // basic debouncing
  }

  lastButtonState = currentButtonState;
}