#define LEDPIN 25
#define SWPIN 5

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

int sw = 0;

void loop() {
  // put your main code here, to run repeatedly:
  sw = digitalRead(SWPIN);

  if (sw == LOW){
    digitalWrite(LEDPIN, HIGH);
  } else {
    digitalWrite(LEDPIN, LOW);
  }
  
  Serial.println(sw);
  delay(10); // this speeds up the simulation
}