const int buttonPin = 2;
int oldValue = LOW; // default/idle value for pin 8 is low.

#define LED 5

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  Serial.println("Hello, ESP32!");
  pinMode(buttonPin, INPUT);
  pinMode(LED, OUTPUT);
}

int val = HIGH;
int newValue = digitalRead(buttonPin);
void loop() {
  // put your main code here, to run repeatedly:
  // Serial.println(newValue);
  // delay(1000);

  // Check if the value was changed,
  // by comparing it with the previous value.
  // if(newValue != oldValue)
  // {
  //   if(newValue == HIGH)
  //   {
  //     digitalWrite(LED, HIGH);
  //     delay(100);
  //     Serial.println("The button is pressed.");
  //   }
  //   else
  //   {
  //     Serial.println("The button is released.");
  //   }
  //   // Remember the value for the next time.
  //   oldValue = newValue;
  //   digitalWrite(LED, LOW);
  // }
  if(newValue != val){
    if(newValue == HIGH){
      Serial.println("The button is pressed. ");
      digitalWrite(LED, HIGH);
      val = HIGH;
    }
    else{
      Serial.println("The button is released");
      digitalWrite(LED, LOW);
      val = LOW;
    }
  }
  // delay(10000); // this speeds up the simulation
}