/// <summary>
/// Retreives a GPS Coordinate from the specified GPS
/// </summary>
/// <param name="GPS">SerialPort that represents GPS</param>
public static Coordinate GetCoordinates(SerialPort GPS)
{
if (!GPS.IsOpen)
{
GPS.Open();
}
string gpsReadout = String.Empty;
while (!gpsReadout.StartsWith("$GPGGA") && !gpsReadout.StartsWith("$GPRMC"))
{
gpsReadout = GPS.ReadLine();
}
GPS.Close();
double latitude;
CoordinateComponent.CardinalDirection longDir;
double longitude;
CoordinateComponent.CardinalDirection latDir;
string[] readout = gpsReadout.Split(',');
try
{
if (gpsReadout.StartsWith("$GPGGA"))
{
latitude = CoordinateComponent.DegreeMinutesToDecimal(double.Parse(readout[2]));
latDir = (CoordinateComponent.CardinalDirection)readout[3][0];
longitude = CoordinateComponent.DegreeMinutesToDecimal(double.Parse(readout[4]));
longDir = (CoordinateComponent.CardinalDirection)readout[5][0];
}
else
{
latitude = CoordinateComponent.DegreeMinutesToDecimal(double.Parse(readout[3]));
latDir = (CoordinateComponent.CardinalDirection)readout[4][0];
longitude = CoordinateComponent.DegreeMinutesToDecimal(double.Parse(readout[5]));
longDir = (CoordinateComponent.CardinalDirection)readout[6][0];
}
return(new Coordinate(latitude, latDir, longitude, longDir));
}
catch
{
return(GetCoordinates(GPS));
}
}
public Coordinate(CoordinateComponent lat, CoordinateComponent lon)
{
Latitude = lat;
Longitude = lon;
}