/// <summary>
/// Parse VTG verb with this structure:
/// VTG,t.t,T,m.m,M,s.s,N,k.k,K,m
/// t.t: true heading
/// m.m: mag heading
/// s.s: speed knots
/// k.k: speed k/mh
/// </summary>
/// <param name="talkerId"></param>
/// <param name="words"></param>
/// <param name="sentence"></param>
private void ParseCOGandSOG(string talkerId, string[] words, string sentence)
{
double cogT;
double cogM;
double sog;
if (words.Length < 6)
{
DebugLog.WriteLine("Invalid VTG sentence: " + sentence);
return;
}
try
{
cogT = Double.Parse(words[1]);
if (cogT < 0 || cogT > 360)
{
DebugLog.WriteLine("Invalid heading: " + sentence);
return;
}
cogM = Double.Parse(words[3]);
if (cogM < 0 || cogM > 360)
{
DebugLog.WriteLine("Invalid heading: " + sentence);
return;
}
sog = Double.Parse(words[5]);
}
catch
{
DebugLog.WriteLine("Invalid VTG sentence: " + sentence);
return;
}
if (COGSOGEvent != null)
{
var args = new NmeaCOGSOGEventArgs(cogT, cogM, sog);
COGSOGEvent(this, args);
}
}
void m_nmeaInputPort_CogSogEvent(object sender, NmeaCOGSOGEventArgs args)
{
DisplayVariables.SpeedOverGround.Value = args.speedKnots;
}