示例#1
0
        /// <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);
        }
示例#2
0
        /// <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);
        }
示例#3
0
        /// <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);
        }