Hi ev'ryone, I'm currently experimenting things with the Antaris chip, and I'm starting to like it - at least through FSO and it's gpsd compatibility layer. I've been browsing through the UBX protocol specification, and I stumbled upon one interesting parameter : the dynamic platform model of the navigational unit.
Simply put : using this, we should be able to explain our chip that we are either by car or by foot, and get more serious tracklogs (providing this is doable, 'cause the doc states "(SW Versions 3.04 and higher)", so I'm not sure whether or not we qualify). I did some quick tests, using my work phone as a reference (an HTC Trinity with a Sirf chip) : when logging car trips, both tracks are pretty close. Like a few meters. Far better than what I expected, at least. But when logging pedestrian trips (and I do quite a few), the Antaris starts to behave like ... a car. Every steep turn I took is throughly rounded on the Neo-based log. So I guess the current setting of our chip is "car". So I wonder : does anyone here know whether we got "version 3.04 or higher" of the software? Hoping that we do (well, ignoring that maybe we don't, actually), I tried to feed the setting to the chip. The CFG-NAV2 UBX message that does that is 40 bytes long, and contains loooot of more or less related information, which I certainly don't know how to feed. So I tried to first _get_ the setting, and re-set it verbatim (give or take the said parameter). But though there is a tool to generate UBX messages (ubxgen.py, on http://wiki.openmoko.org/wiki/Neo_FreeRunner_GPS ), I can't find a (successful) way to get the result from the chip. From my view, I should cat the commands to ttySAC1 and then read it. But I get nothing exciting that way... I guess I should shut down FSO's GPS handling first, but how? Is stopping fso-gpsd enough? (I tried, but it didn't seem better) Any insights, somebody? Thanks. -- Olivier _______________________________________________ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community