At 08:04 16 March 2013, Max Kellermann wrote:
On Saturday, March 16, 2013 6:27:31 AM UTC+1,
wrote:
Max and XCSoar Team
[...]
Normally these 3 sentences are provided to the LNAV from
the GPSNAV/303
combination.

So the L-Nav does not transmit NMEA, it expects to receive
them?

We need to do something similar for the LXNAV V7 to get full
feature
support, the last tiny piece that is missing in XCSoar.

Yes, we could do that. Is there a ticket already? If not, please
write one.
And be ready to test our binaries. None of us has a L-Nav.
Maybe somebody out there has a spare one and likes to donate
it to the
XCSoar project? That is usually the best way to guarantee
maximum
compatibility.


We use GPS-NAV devices in combination with LX160. GPS-NAV
sends information also about the target, so with that LX160 can
be used as a final glide computer. At the moment we have made
the cabling so, that GPS-NAV sends NMEA to the RX of the
LX160, and TX of the LX160 send data to XCSoat over
Soartronic IOIO.

If we have a possibility to send NMEA data with GPS position and
target to devices like LX160 and VW921, they could use it for
their final glide calculation, build-in wind calculation, etc. Both
LX160 and VW921 can only send data to XCSoar, the receiving
side of the serial comm is used to listen external GPS source, like
GPS-NAV. Since the baudrate is same, should be relatively easy.
Maybe the NMEA our does that already, but cannot be
configured to send into the same port that is used for incoming
data.

Downloading logger data from GPS-NAV would be great! It is
really nice back-up logger with navigating display.