code สำหรับ หา mac address ของบอร์ด arduino

#include <ESP8266WiFi.h>

const char *ssid = “< SSID ของเครือข่ายคุณ”;
const char *password = “password ของ wireless”;
byte mac[6];

void setup(){
Serial.begin(115200);

WiFi.begin(ssid, password);

while ( WiFi.status() != WL_CONNECTED ) {
delay ( 500 );
Serial.print ( “.” );
WiFi.macAddress(mac);
Serial.print(“MAC: “);
Serial.print(mac[5],HEX);
Serial.print(“:”);
Serial.print(mac[4],HEX);
Serial.print(“:”);
Serial.print(mac[3],HEX);
Serial.print(“:”);
Serial.print(mac[2],HEX);
Serial.print(“:”);
Serial.print(mac[1],HEX);
Serial.print(“:”);
Serial.println(mac[0],HEX);
}

}

void loop() {

}