protected override Task <IObservable <LocalisationData> > InitializeCore()
{
return(Task.Run(
() =>
{
IObservable <GeoData> geoDataObservable = ToGeoData(ToNmeaSentence(SerialConnection.CreateCharListener(this.SerialPortName, this.SerialBaudRate, Parity.None, 8, StopBits.One)));
return (
from geoData in geoDataObservable
select new LocalisationData {
RawData = geoData,
GpsStatus = (geoData.PositionData.NbSatellites < 4 || geoData.PositionData.Quality == FixType.None || geoData.PrecisionData.Hdop > 4 ? GpsStatus.SignalLost : GpsStatus.Reliable)
}).Publish().RefCount();
}));
}