//push button
#define BUTTON_PIN_1 4
#define BUTTON_PIN_2 15
#define BUTTON_PIN_3 18
#define BUTTON_PIN_4 19
#define BUTTON_PIN_5 21
#define BUTTON_PIN_6 22

//led
#define LED_1 4

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  
  //Serial.println("Hello, ESP32!");

  pinMode(BUTTON_PIN_1, INPUT_PULLUP);
  

}

void loop() {
  if(digitalRead(BUTTON_PIN_1) == LOW) 
    {
      digitalWrite(LED_1,HIGH);
      Serial.println(  digitalRead(BUTTON_PIN_1) );
    }
  //digitalWrite(BUTTON_PIN_1, LOW);
  //Serial.println(digitalRead(BUTTON_PIN_1));
  delay(10); // this speeds up the simulation
}