void loop() {

  ido = timeClient.getFormattedTime();
  tizperc = (ido.substring(3,4));
  tizpercint= tizperc.toInt();
  if (tizpercint != temppercint) {
    timeClient.update();
    temppercint = tizpercint;
    Serial.println("ido frissitve");
  }

Serial.println(ido);
u8g2.clearBuffer();
u8g2.setFont(u8g2_font_8x13_tr);
u8g2.setDrawColor(1);
u8g2.setFontPosTop();
u8g2.setFontDirection(2);
String ipString = WiFi.localIP().toString();
u8g2.drawStr(127,31, (char *) ipString.c_str());
u8g2.setFont(u8g2_font_10x20_tr);
u8g2.drawStr(127,18, (char *) ido.c_str());
u8g2.sendBuffer();

  if (ipString == "0.0.0.0") {
    Serial.println("Az IP cim rossz!");
    WiFi.disconnect();
    Serial.println("lecsatlakozva");
    delay(10000);
    WiFi.begin();
    while (WiFi.status() != WL_CONNECTED) {
      delay(500);
      Serial.print('.');
      }
    Serial.println("felcsatlakozva");
   }
}