Tracker NONE implementiert und kleine Verbesserungen

nmea0183.py

@@ -99,7 +99,6 @@ def GGA(boatdata, msg):
 
 def GLL(boatdata, msg):
     # Position data: position fix, time of position fix, and status
-    # UTC of position ignored
     if not msg.status == 'A':
         return
     lat_fac = 1 if msg.lat_dir == 'N' else -1
@@ -341,7 +340,15 @@ def VBW(boatdata, msg):
     print("-> VBW")
 
 def VHW(boatdata, msg):
-    #print("-> VHW")
+    # Heading und Geschwindigkeit durch das Wasser
+    # Aktuelle Meßdaten von Sensoren
+    # msg.heading_true # degrees decimal
+    # msg.heading_magnetic degrees decimal
+    # print("-> VHW")
+    if msg.heading_true is not None:
+        boatdata.setValue("HDT", float(msg.heading_true))
+    if msg.heading_magnetic is not None:
+        boatdata.setValue("HDM", float(msg.heading_magnetic))
     boatdata.setValue("STW", float(msg.water_speed_knots))
 
 def VPW(boatdata, msg):
@@ -350,19 +357,10 @@ def VPW(boatdata, msg):
     pass
 
 def VTG(boatdata, msg):
-    # Track made good and speed over ground
     """
-    (('True Track made good', 'true_track', <class 'float'>),
-    ('True Track made good symbol', 'true_track_sym'),
-    ('Magnetic Track made good', 'mag_track', <class 'decimal.Decimal'>),
-    ('Magnetic Track symbol', 'mag_track_sym'),
-    ('Speed over ground knots', 'spd_over_grnd_kts', <class 'decimal.Decimal'>),
-    ('Speed over ground symbol', 'spd_over_grnd_kts_sym'),
-    ('Speed over ground kmph', 'spd_over_grnd_kmph', <class 'float'>),
-    ('Speed over ground kmph symbol', 'spd_over_grnd_kmph_sym'),
-    ('FAA mode indicator', 'faa_mode'))
-    ['', 'T', '', 'M', '0.117', 'N', '0.216', 'K', 'A']
-    $IIVTG,312.000000,T,,M,2.000000,N,3.704000,K,A*28
+    Track made good and speed over ground
+    Calculated from previous GPS positions
+    Only true track is used at the moment. magnetic is ignored
     """
     if msg.faa_mode != 'A':
         return