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# Magellan
from decimal import Decimal
from ... import nmea
from ... import nmea_utils
class MGN(nmea.ProprietarySentence):
sentence_types = {}
def __new__(_cls, manufacturer, data):
name = manufacturer + data[0]
cls = _cls.sentence_types.get(name, _cls)
return super(MGN, cls).__new__(cls)
def __init__(self, manufacturer, data):
self.sentence_type = manufacturer + data[0]
super(MGN, self).__init__(manufacturer, data)
class MGNWPL(MGN, nmea_utils.LatLonFix):
""" Magellan Waypoint Location
https://github.com/wb2osz/direwolf/blob/master/waypoint.c
$PMGNWPL,ddmm.mmmm,ns,dddmm.mmmm,ew,alt,unit,wname,comment,icon,xx*99
Where,
ddmm.mmmm,ns is latitude
dddmm.mmmm,ew is longitude
alt is altitude
unit is M for meters or F for feet
wname is the waypoint name
comment is message or comment
icon is one or two letters for icon code
xx is waypoint type which is optional, not well
defined, and not used in their example.
*99 is checksum
"""
fields = (
("Subtype", "subtype"),
("Latitude", "lat"),
("Latitude Direction", "lat_dir"),
("Longitude", "lon"),
("Longitude Direction", "lon_dir"),
("Altitude", "altitude", Decimal),
("Altitude Units (Feet/Meters)", "altitude_unit"),
("Waypoint Name", "wname"),
("Comment", "comment"),
("Icon", "icon"),
("Waypoint Type", "type")
)
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