Added gpgsv

src/NmeaParser.Shared/Nmea/Gps/GPGSV.cs

@@ -0,0 +1,98 @@
+//
+// Copyright (c) 2014 Morten Nielsen
+//
+// Licensed under the Microsoft Public License (Ms-PL) (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://opensource.org/licenses/Ms-PL.html
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace NmeaParser.Nmea.Gps
+{
+	/// <summary>
+	///  GPS Satellites in view
+	/// </summary>
+	[NmeaMessageType(Type = "GPGSV")]
+	public sealed class Gpgsv : NmeaMessage
+	{
+		protected override void LoadMessage(string[] message)
+		{
+			TotalMessages = int.Parse(message[0]);
+			MessageNumber = int.Parse(message[1]);
+			SVsInView = int.Parse(message[2]);
+
+			List<SatelitteVehicle> svs = new List<SatelitteVehicle>();
+			for (int i = 3; i < 18; i+=4)
+			{
+				if (message[i].Length == 0)
+					continue;
+				else
+					svs.Add(new SatelitteVehicle(message, i));
+			}
+			this.SVs = svs.ToArray();
+		}
+
+		/// <summary>
+		/// Total number of messages of this type in this cycle
+		/// </summary>
+		public int TotalMessages { get; private set; }
+
+		/// <summary>
+		/// Message number
+		/// </summary>
+		public int MessageNumber { get; private set; }
+
+		/// <summary>
+		/// Total number of SVs in view
+		/// </summary>
+		public int SVsInView { get; private set; }
+
+		/// <summary>
+		/// Dilution of precision
+		/// </summary>
+		public SatelitteVehicle[] SVs { get; private set; }
+	}
+
+	public sealed class SatelitteVehicle
+	{
+		internal SatelitteVehicle(string[] message, int startIndex)
+		{
+			PrnNumber = int.Parse(message[startIndex]);
+			Elevation = double.Parse(message[startIndex+1], CultureInfo.InvariantCulture);
+			Azimuth = double.Parse(message[startIndex + 2], CultureInfo.InvariantCulture);
+			int snr = -1;
+			if (int.TryParse(message[startIndex + 3], out snr))
+				SignalToNoiseRatio = snr;
+		}
+		/// <summary>
+		/// SV PRN number
+		/// </summary>
+		public int PrnNumber { get; set; }
+		/// <summary>
+		/// Elevation in degrees, 90 maximum
+		/// </summary>
+		public double Elevation { get; private set; }
+		/// <summary>
+		/// Azimuth, degrees from true north, 000 to 359
+		/// </summary>
+		public double Azimuth { get; private set; }
+		/// <summary>
+		/// Signal-to-Noise ratio, 0-99 dB (-1 when not tracking) 
+		/// </summary>
+		public int SignalToNoiseRatio { get; private set; }
+	}
+}