     Serial.println(ssid);
     Serial.print("IP address: ");
     Serial.println(WiFi.localIP());
+
+    flashAll();
 
 //    if (MDNS.begin("esp8266")) {
 //        Serial.println("MDNS responder started");

IPAddress gateway(192,168,0,255); // network gateway address
IPAddress subnet(255,255,255,0); // network subnet mask

const int led = 13;

const int LED01 = D5;
const int LED02 = D6;
const int LED03 = D7;

void handleRoot() {
    digitalWrite(LED01, 1);

                message = "At location3";
                led = LED03;
                break;
            case 4:
                message = "At location4";
                led = LED04;
                break;
            default:
                message = "location Argument = ";
                message += server.arg("location");
        }

    }
    light_led(led);
    server.send(200, "text/plain", message);     //Returns the HTTP response
    
    delay(1000);
    digitalWrite(LED01, HIGH);
}

void light_led(int led){
    digitalWrite(LED01, LOW);
    digitalWrite(LED02, LOW);
    digitalWrite(LED03, LOW);
    digitalWrite(LED04, LOW);

    digitalWrite(led, HIGH);
}

void flashAll(){
    digitalWrite(LED01, HIGH);
    digitalWrite(LED02, HIGH);
    digitalWrite(LED03, HIGH);
    digitalWrite(LED04, HIGH);

    delay(100);
    
    digitalWrite(LED01, LOW);
    digitalWrite(LED02, LOW);
    digitalWrite(LED03, LOW);
    digitalWrite(LED04, LOW);
}

void setup(void){
    pinMode(LED01, OUTPUT);
    pinMode(LED02, OUTPUT);
    pinMode(LED03, OUTPUT);
    pinMode(LED04, OUTPUT);

    Serial.begin(115200);
    WiFi.begin(ssid, password);
    Serial.println("");
