averageTemperature property
The Tello's average temperature, presumably in celsius.
Implementation
Future<double> get averageTemperature async {
String temperatureResponse = (await _command("temp?"));
RegExp temperatureRegex = RegExp(r"((\d+)(~)(\d+)(\w+))");
RegExpMatch matches = temperatureRegex.firstMatch(temperatureResponse)!;
return (double.parse("${matches[2]}") + double.parse("${matches[4]}")) / 2;
}