[Xcsoar-user] LX5000 NMEA Config

[Luke S. <lu...@si...>]

Hi Everyone,

Does anyone have a list of recommended NMEA sentences that should be
sent to XCSoar from an "intelligent" vario?  The LX series of
instruments can be customized as to what data is sent out to the
serial port.  The XCsoar manual recomends GPRMC and GPGGA which is
what I have currently enabled, would enabling any of the other
sentences be of benefit to XCSoar?  The available sentences are:

GPGGA
GPRMC
GPRMB
GPGLL
GPR00
GPWPL
GPLX1 (proprietary LX sentence?)
GPBWC
LXWP_ (data formatted specifically for Winpilot)

The reason I am asking is that flying in wave the Zig-Zag wind
calculation was not working as expected.  I've tested with both v5.2.4
and v6a.  V6a seems better than 5.2.4 unfortunately flying in wave at
low ground speeds (TAS70kts GS5kts) V6a would show a false landing
(possible regression to a problem seen in v4.5?).  So I am wondering
if enabling some of the other NMEA sentences could improve both the
Zig-Zag calculation and the false landing issue.

Cheers,
Luke