/// <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], sentence.DataElements[0]);
//Console.WriteLine($"Time of Reading:{position.TimeOfReading}UTC");
if (sentence.DataElements[1].ToLower() == "a")
{
position.Valid = true;
}
else
{
position.Valid = false;
}
//Console.WriteLine($"valid:{position.Valid}");
//if (position.Valid) {
//Console.WriteLine($"will attempt to parse latitude; element[2]:{sentence.DataElements[2]}, element[3]:{sentence.DataElements[3]}");
position.Position.Latitude = NmeaUtilities.DegreesMinutesDecode(sentence.DataElements[2], sentence.DataElements[3]);
//Console.WriteLine($"will attempt to parse longitude; element[4]:{sentence.DataElements[4]}, element[5]:{sentence.DataElements[5]}");
position.Position.Longitude = NmeaUtilities.DegreesMinutesDecode(sentence.DataElements[4], sentence.DataElements[5]);
//Console.WriteLine("40");
decimal speedInKnots;
if (decimal.TryParse(sentence.DataElements[6], out speedInKnots))
{
position.SpeedInKnots = speedInKnots;
}
decimal courseHeading;
if (decimal.TryParse(sentence.DataElements[7], out courseHeading))
{
position.CourseHeading = courseHeading;
}
if (sentence.DataElements[10].ToLower() == "e")
{
position.MagneticVariation = CardinalDirection.East;
}
else if (sentence.DataElements[10].ToLower() == "w")
{
position.MagneticVariation = CardinalDirection.West;
}
else
{
position.MagneticVariation = CardinalDirection.Unknown;
}
//}
//Console.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], sentence.DataElements[1]);
location.Position.Longitude = NmeaUtilities.DegreesMinutesDecode(sentence.DataElements[2], sentence.DataElements[3]);
location.TimeOfReading = NmeaUtilities.TimeOfReading(null, sentence.DataElements[4]);
location.Valid = (sentence.DataElements[5].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]))
{
//Console.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]);
location.Position.Latitude = NmeaUtilities.DegreesMinutesDecode(sentence.DataElements[1], sentence.DataElements[2]);
location.Position.Longitude = NmeaUtilities.DegreesMinutesDecode(sentence.DataElements[3], sentence.DataElements[4]);
location.FixQuality = (FixType)Converters.Integer(sentence.DataElements[5]);
int numberOfSatellites;
if (int.TryParse(sentence.DataElements[6], out numberOfSatellites))
{
location.NumberOfSatellites = numberOfSatellites;
}
decimal horizontalDilutionOfPrecision;
if (decimal.TryParse(sentence.DataElements[7], out horizontalDilutionOfPrecision))
{
location.HorizontalDilutionOfPrecision = horizontalDilutionOfPrecision;
}
decimal altitude;
if (decimal.TryParse(sentence.DataElements[8], out altitude))
{
location.Position.Altitude = altitude;
}
PositionReceived(this, location);
}
