/// <summary>
/// Service Start
/// </summary>
protected override void Start()
{
if (_state == null)
{
_state = new GpsState();
_state.MicrosoftGpsConfig = new MicrosoftGpsConfig();
_state.MicrosoftGpsConfig.CommPort = 0;
_state.MicrosoftGpsConfig.CaptureHistory = true;
_state.MicrosoftGpsConfig.CaptureNmea = true;
_state.MicrosoftGpsConfig.RetrackNmea = false;
SaveState(_state);
}
else
{
// Clear old Gps readings
_state.GpGga = null;
_state.GpGll = null;
_state.GpGsa = null;
_state.GpGsv = null;
_state.GpRmc = null;
_state.GpVtg = null;
}
_httpUtilities = DsspHttpUtilitiesService.Create(Environment);
if (_state.MicrosoftGpsConfig == null)
_state.MicrosoftGpsConfig = new MicrosoftGpsConfig();
// Publish the service to the local Node Directory
DirectoryInsert();
if (simulateFromLogNmea)
{
SpawnIterator(SimulateMicrosoftGps);
}
else
{
_gpsConnection = new GpsConnection(_state.MicrosoftGpsConfig, _gpsDataPort);
setCaptureNmea();
SpawnIterator(ConnectToMicrosoftGps);
}
// Listen on the main port for requests and call the appropriate handler.
Interleave mainInterleave = ActivateDsspOperationHandlers();
mainInterleave.CombineWith(new Interleave(new ExclusiveReceiverGroup(
Arbiter.Receive<string[]>(true, _gpsDataPort, DataReceivedHandler)
,Arbiter.Receive<Exception>(true, _gpsDataPort, ExceptionHandler)
#if TRACEDATA
// see Info messages with data strings coming from GPS at http://localhost:50000/console/output
,Arbiter.Receive<string>(true, _gpsDataPort, MessageHandler)
#endif
),
new ConcurrentReceiverGroup()));
// display HTTP service Uri
LogInfo(LogGroups.Console, "Overhead view [" + FindServiceAliasFromScheme(Uri.UriSchemeHttp) + "/top]\r\n* Service uri: ");
LogInfo(LogGroups.Console, "Map view [" + FindServiceAliasFromScheme(Uri.UriSchemeHttp) + "/map]\r\n* Service uri: ");
LogInfo(LogGroups.Console, string.Format("Switches: CaptureHistory={0} CaptureNmea={1} RetrackNmea={2}", _state.MicrosoftGpsConfig.CaptureHistory, _state.MicrosoftGpsConfig.CaptureNmea, _state.MicrosoftGpsConfig.RetrackNmea));
Console.WriteLine(string.Format("Switches: CaptureHistory={0} CaptureNmea={1} RetrackNmea={2}", _state.MicrosoftGpsConfig.CaptureHistory, _state.MicrosoftGpsConfig.CaptureNmea, _state.MicrosoftGpsConfig.RetrackNmea));
}
private void LoadAttributes(GpsConnection gpsConnection)
{
Latitude = gpsConnection.Latitude;
Longitude = gpsConnection.Longitude;
GpsTime = gpsConnection.DateTime;
LocalTime = GpsTime.ToLocalTime();
Hdop = gpsConnection.HorizontalDilutionOfPrecision;
SatelliteFixCount = gpsConnection.FixSatelliteCount;
SatelliteFixStatus = gpsConnection.FixStatus;
Speed = gpsConnection.Speed;
Bearing = gpsConnection.Course;
#if TESTINGWITHOUTGPS
Location = new Coordinate(443759, 6484291); //East end of MainBay19
Bearing = 0;
#elif GPSINANCHORAGE
//Offset Regan's office to end of Transect 001
Latitude -= (61.2174 - 58.5260);
Longitude += (149.88493 - 135.9615);
Location = MobileApplication.Current.Project.SpatialReference.FromGps(Longitude, Latitude);
#elif GPSINJUNEAU
//Offset SEAN Juneau office to end of Transect 001
Latitude -= (58.377663888 - 58.5260);
Longitude += (134.69872777 - 135.9615);
Location = MobileApplication.Current.Project.SpatialReference.FromGps(Longitude, Latitude);
#else
Location = MobileApplication.Current.Project.SpatialReference.FromGps(Longitude, Latitude);
#endif
}
internal static GpsPoint FromGpsConnection(TrackLog trackLog, GpsConnection gpsConnection)
{
if (trackLog == null)
throw new ArgumentNullException("trackLog");
if (gpsConnection == null)
throw new ArgumentNullException("gpsConnection");
#if !TESTINGWITHOUTGPS
if (!gpsConnection.IsOpen)
throw new InvalidOperationException("GPS connection is closed");
#endif
//May throw an exception, but should never return null
var gpsPoint = FromFeature(MobileUtilities.CreateNewFeature(FeatureSource));
gpsPoint.TrackLog = trackLog;
gpsPoint.LoadAttributes(gpsConnection);
return gpsPoint;
}
private void HookupGpsEvents()
{
if (_gpsConnection == null)
_gpsConnection = MobileApplication.Current.GpsConnectionManager.Connection;
if (_gpsConnection.IsOpen)
{
_gpsConnection.GpsClosed += ProcessGpsClosedEventFromConnection;
_gpsConnection.GpsError += ProcessGpsErrorEventFromConnection;
_gpsConnection.GpsChanged += ProcessGpsChangedEventFromConnection;
_gpsConnection.GpsOpened -= ProcessGpsOpenedEventFromConnection;
ShowBoat();
}
else
{
_gpsConnection.GpsOpened += ProcessGpsOpenedEventFromConnection;
}
}
private void CloseGpsConnection()
{
UnhookGpsEvents();
_gpsConnection = null;
}
private static bool LocationChanged(GpsConnection gpsConnection)
{
return (gpsConnection.GpsChangeType & GpsChangeType.Position) != 0;
}