Le mardi 10 février 2009 à 01:39 +0100, Mathias Adam a écrit :
> […] I hope you're still interested...
> There is an "AN0008_v048_datalog extesion.pdf" which describes some (or
> all?) of those config fields. Jesper Zedlitz has a link to it on his
> page: <http://www.zedlitz.de/skytraq/>.
Huh? Didn’t find that one, my bad. That solves many questions.
> He also made a standalone configuration tool for Skytraq loggers.
> I'm not sure if this functionality does fit into gpsbabel then
> (Robert, what's your opinion about that)?
I would say no. I just wrote it there because I had the framework to
communicate with the unit. But it is a pity to duplicate the code in
gpsbabel and in the standalone config app. Or is it not complex enough
to make the common code into a library?
> However there are reports (Martin Maurer on 2008-11-29 on this list)
> which suggest that this command isn't supported by all Skytraq devices.
> It might be a Venus 5/Venus 6 difference because the AN0008 document
> (which describes the Venus 5 protocol) doesn't mention this command. The
> document only describes a read command for single sectors.
> The new skytraq patch first tries the multiple-sector-read request and,
> if it gets a NACK, falls back to the single read command. Single read
> can be forced by giving read-at-once=1.
Fine. Could the protocol level be detected by the first data exchange
where the unit transmits its version number ?
> Have you managed to get the rollover feature to work in the meantime?
No, it always stops with a bunch of blocks free. Guess it was a
planned-but-never-implemented feature, which a marketing jackass wanted
to keep on the box…
We can see in the aforementioned document that there are no provisions
for such a feature.
> It doesn't matter if I set rollover on or off, currently it doesn't log
> anymore. Strange enough, according to write ptr there should still be 3
> complete sectors empty...
In my experiments when the automatic logging was disabled I still could
use the "POI" button to record a point. I guess the unit keeps some
space for the user to record "important" points when the memory is
nearly full. Doesn’t make sense on units without that button, however.
Anyway, thanks for the good work! I think it’s quite close to something
really usable now.