void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(2, OUTPUT);
  // Serial.println("Hello, ESP32!");
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(2, HIGH);
  delay(500); // this speeds up the simulation
  digitalWrite(2, LOW);
  delay(500);
}