On Fri, Nov 22, 2013 at 5:37 PM, Dr. H. Nikolaus Schaller <h...@goldelico.com> wrote: > > Am 22.11.2013 um 17:21 schrieb Lukas Märdian: > >> Am 22.11.2013 23:23, schrieb Dr. H. Nikolaus Schaller: >>> >>> Am 22.11.2013 um 15:46 schrieb Pascal Gosselin: >>> >>>> >>>> What about GPS specifications ? My company would have interest in >>>> multiple units if the GPS chip was capable of 5Hz or greater updates. >>>> Recent GPS chipsets all seem to have GPS/GLONASS capability, which is very >>>> nice to have. >>> >>> I think we can not easily change to use something different than the >>> WSG0084 using a Sirf IV. >>> Unfortunately, the latest datasheet still isn't telling anything about the >>> max. update rate and any updates in the firmware: >> >> On page 15 it says: "3: Defined as current drawn during continuous >> operation at a 10Hz update rate." Could this be a hint, that the module >> can actually operate at a max. update rate of 10Hz? > > Unfortunately no. I also stumbled over this sentence but I think they mean > the update rate of the current probe, i.e. they did measuer the supply > current 10 times per second. > >> >> Is there any GTA04 board, which already has a W2SG0084i installed? > > Yes, about 50 or 80 (I don't remember the exact figure) since the W2SG0004i > was EOL and could easily be swapped. Unfortunately we don't have a mapping > to serial numbers. > >> If >> so, we could try to query/set the output rate according to chap. 5 "NMEA >> Input Messages", using the message ID 103. > > That one unfortunately only allows to specify the reporting rate in > multiples of 1 second, i.e. up to 255 seconds. But not 1/10 sec. > >> Also chap. 6.2 "OSP Input >> Messages" look interesting, especially message 0x81. >> >> Cheers, >> Lukas > > > Maybe someone knows a good technical contact to Wi2Wi? > I only have very indirect support though a distributor.
I don't think that will help you. The interface is SiRF's protocol, not Wi2Wi's and no documentation mentions of a mode above 1 Hz. To my knowledge, no SiRF chipset has support for a faster rate (at least in the frontend, internally, they might). So for 5/10 Hz a u-blox would be needed (or a SkyTraq, which are available up to 20 Hz). > BR, > Nikolaus > > > _______________________________________________ > Openmoko community mailing list > community@lists.openmoko.org > http://lists.openmoko.org/mailman/listinfo/community _______________________________________________ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community