#include <WiFi.h>

void setup() {
  Serial.begin(115200);
  delay(2000); // wait for Serial to open

  WiFi.mode(WIFI_MODE_STA);  // set WiFi to station mode
  WiFi.begin();              // start WiFi (no need to connect)

  delay(1000);  // give time to initialize

  String mac = WiFi.macAddress();
  Serial.println("ESP32 MAC Address:");
  Serial.println(mac);
}

void loop() {
}