public static VtgData Parser(string inputString)
{
VtgData data = new VtgData();
if (inputString == null || inputString.Length == 0)
{
return(data);
}
string dataString = inputString;
if (inputString.Contains("*"))
{
dataString = inputString.Substring(0, inputString.IndexOf('*')); // strip off the checksum
}
else
{
return(data);
}
string[] values = dataString.Split(',');
if (values.Length < 10)
{
return(data);
//throw new FormatException();
}
if (string.Compare(values[9], "a", true) == 0)
{
data.Mode = GpsMode.Autonomous;
}
else if (string.Compare(values[9], "d", true) == 0)
{
data.Mode = GpsMode.DifferentialGPS;
}
else
{
data.Mode = GpsMode.DR;
}
string speed = values[7];
if (speed == null || speed.Length == 0)
{
speed = "0.0";
}
data.GroundSpeedInKmh = double.Parse(speed);
speed = values[5];
if (speed == null || speed.Length == 0)
{
speed = "0.0";
}
data.GroundSpeedInKnots = decimal.Parse(speed);
return(data);
}
private static void ParseSentence(GpsReading gpsReading, string sentence)
{
var cmd = ParseCommand(sentence);
if (string.IsNullOrEmpty(cmd))
{
return;
}
//GPNTR
switch (cmd.ToUpper())
{
case "$GPGGA":
case "$GNGGA":
case "$BDGGA":
gpsReading.FixedGpsData = GgaData.Parse(sentence);
break;
case "$GPVTG":
case "$GNVTG":
case "$BDVTG":
gpsReading.GroundVector = VtgData.Parser(sentence);
break;
case "$GPRMC":
case "$GNRMC":
case "$BDRMC":
gpsReading.Summary = RmcData.Parse(sentence);
break;
case "#HEADINGA":
gpsReading.Heading = HgaData.Parse(sentence);
break;
case "#BESTUTMA":
gpsReading.Utm = UtmData.Parse(sentence);
break;
case "$GPNTR":
gpsReading.NtrData = NtrData.Parse(sentence);
break;
//case "$GPGSA":
// gpsReading.DopActiveSatellites = GsaData.Parse(sentence);
// break;
//case "$GPGSV":
// gpsReading.SatellitesInView.Add(GsvData.Parse(sentence));
// break;
//case "$GPHDT":
// gpsReading.HdtData = HdtData.Parse(sentence);
// break;
case "$PTNL":
if (sentence.IndexOf("AVR", System.StringComparison.Ordinal) > 0)
{
gpsReading.AvrData = AvrData.Parse(sentence);
}
else if (sentence.IndexOf("VGK", System.StringComparison.Ordinal) > 0)
{
gpsReading.VgkData = VgkData.Parse(sentence);
}
break;
}
}