/// <summary>
/// Process the data from a RMC
/// </summary>
/// <param name="data">String array of the message components for a RMC message.</param>
public void Process(NmeaSentence sentence)
{
var position = new GnssPositionInfo();
position.TalkerID = sentence.TalkerID;
position.TimeOfReading = NmeaUtilities.TimeOfReading(sentence.DataElements[8].ToString(), sentence.DataElements[0].ToString());
//Debug.WriteLine($"Time of Reading:{position.TimeOfReading}UTC");
if (sentence.DataElements[1].ToString().ToLower() == "a")
{
position.Valid = true;
}
else
{
position.Valid = false;
}
//Debug.WriteLine($"valid:{position.Valid}");
//if (position.Valid) {
//Debug.WriteLine($"will attempt to parse latitude; element[2]:{sentence.DataElements[2]}, element[3]:{sentence.DataElements[3]}");
position.Position.Latitude = NmeaUtilities.DegreesMinutesDecode(sentence.DataElements[2].ToString(), sentence.DataElements[3].ToString());
//Debug.WriteLine($"will attempt to parse longitude; element[4]:{sentence.DataElements[4]}, element[5]:{sentence.DataElements[5]}");
position.Position.Longitude = NmeaUtilities.DegreesMinutesDecode(sentence.DataElements[4].ToString(), sentence.DataElements[5].ToString());
//Debug.WriteLine("40");
double speedInKnots;
if (double.TryParse(sentence.DataElements[6].ToString(), out speedInKnots))
{
position.SpeedInKnots = speedInKnots;
}
double courseHeading;
if (double.TryParse(sentence.DataElements[7].ToString(), out courseHeading))
{
position.CourseHeading = courseHeading;
}
if (sentence.DataElements[10].ToString().ToLower() == "e")
{
position.MagneticVariation = CardinalDirection.East;
}
else if (sentence.DataElements[10].ToString().ToLower() == "w")
{
position.MagneticVariation = CardinalDirection.West;
}
else
{
position.MagneticVariation = CardinalDirection.Unknown;
}
//}
//Debug.WriteLine($"RMC Message Parsed, raising event");
PositionCourseAndTimeReceived(this, position);
}
/// <summary>
/// Process the data from a GLL message.
/// </summary>
/// <param name="data">String array of the message components for a GLL message.</param>
public void Process(NmeaSentence sentence)
{
//
// Status is stored in element 7 (position 6), A = valid, V = not valid.
//
var location = new GnssPositionInfo();
location.TalkerID = sentence.TalkerID;
location.Position.Latitude = NmeaUtilities.DegreesMinutesDecode(sentence.DataElements[0].ToString(), sentence.DataElements[1].ToString());
location.Position.Longitude = NmeaUtilities.DegreesMinutesDecode(sentence.DataElements[2].ToString(), sentence.DataElements[3].ToString());
location.TimeOfReading = NmeaUtilities.TimeOfReading(null, sentence.DataElements[4].ToString());
location.Valid = (sentence.DataElements[5].ToString().ToLower() == "a");
GeographicLatitudeLongitudeReceived(this, location);
}
/// <summary>
/// Process the data from a GGA message.
/// </summary>
/// <param name="data">String array of the message components for a CGA message.</param>
public void Process(NmeaSentence sentence)
{
// make sure all fields are present
for (var index = 0; index <= 7; index++)
{
if (string.IsNullOrEmpty(sentence.DataElements[index].ToString()))
{
//Debug.WriteLine("Not all elements present");
// TODO: should we throw an exception and have callers wrap in a try/catch?
// problem today is that it just quietly returns
return;
}
}
var location = new GnssPositionInfo();
location.TalkerID = sentence.TalkerID;
location.TimeOfReading = NmeaUtilities.TimeOfReading(null, sentence.DataElements[0].ToString());
location.Position.Latitude = NmeaUtilities.DegreesMinutesDecode(sentence.DataElements[1].ToString(), sentence.DataElements[2].ToString());
location.Position.Longitude = NmeaUtilities.DegreesMinutesDecode(sentence.DataElements[3].ToString(), sentence.DataElements[4].ToString());
location.FixQuality = (FixType)Converters.Integer(sentence.DataElements[5].ToString());
int numberOfSatellites;
if (int.TryParse(sentence.DataElements[6].ToString(), out numberOfSatellites))
{
location.NumberOfSatellites = numberOfSatellites;
}
double horizontalDilutionOfPrecision;
if (double.TryParse(sentence.DataElements[7].ToString(), out horizontalDilutionOfPrecision))
{
location.HorizontalDilutionOfPrecision = horizontalDilutionOfPrecision;
}
double altitude;
if (double.TryParse(sentence.DataElements[8].ToString(), out altitude))
{
location.Position.Altitude = altitude;
}
PositionReceived(this, location);
}
