void saveDS18B20() {
  File saveFile = SPIFFS.open(DS18B20_FILE, "w");
  //historyFile.print(writeAddress(sensor1).c_str());
  uint8_t sensor4[8] = { 0x28, 0x9d, 0x5f, 0x9b, 0x5b, 0x14, 0x01, 0x59 };
  saveFile.write((const uint8_t *)sensor4, sizeof(sensor4));
  saveFile.close();
}

void loadDS18B20() {
  File file = SPIFFS.open(DS18B20_FILE, "r");
  if (!file) {
    Serial.println("No ds18b20-1 Exist");
  } else {
    size_t size = file.size();
    if ( size == 0 ) {
      Serial.println("History file empty !");
    } else {
      Serial.println("History file loaded !");
      Serial.println(size);

      uint8_t message[8]= {'\0'};
      String str = file.readString();
      const char *pStr = str.c_str();
      Serial.println(pStr);
      memcpy(message, pStr, 8);

      printAddress(message);
      float tempC = sensors.getTempC(message);
      Serial.print("temperature1: ");
      Serial.println(tempC);
      Serial.println(CheckAddress(message));
    }
    file.close();
  }
}