#include <SPI.h>
    #include <WiFi.h>

    char ssid[] = "yourNetwork";     // the name of your network
    int status = WL_IDLE_STATUS;     // the Wifi radio's status

    byte mac[6];                     // the MAC address of your Wifi shield


    void setup()
    {
     Serial.begin(9600);

     status = WiFi.begin(ssid);

     if ( status != WL_CONNECTED) {
        Serial.println("Couldn't get a wifi connection");
        while(true);
      }
      // if you are connected, print your MAC address:
      else {
      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 () {}