[maemo-developers] N810 AGPS?

[From: Charles Werbick]

I've heard a lot  of complaints about time to fix for GPS on the n810.
If there's a way to read the raw gps data and do the initial ephemeris
processing and location calculation with the ARM processor, I'm all
ears!

Charles Werbick

On 1/30/08, Darius Jack <dariusjack2006 at yahoo.ie> wrote:
> Hi,
>  as Navteq's developer I developed some LBS systems and your N810 can play
> GSM-AGPS, WiFi-AGPS.
> Frankly speaking I have never tested any of my 2 AGPS enabled NEC 616V cell
> phones for navigation as I have got 2 bt gps, 2 usb  gps devices and they
> work fine and fast. My another gps enabled cell phone Motorola A1000 (agps
> as I suppose) never started to work fine due to gps signal loss and long fix
> times.
>
> Darius
>
>
>
> Simon Pickering <S.G.Pickering at bath.ac.uk> wrote:
>
> Just wondering if AGPS is enabled, or could be enabled on the N810. We
> have a chip which supports it (Ti NaviLink GPS5300). The question
> (mainly aimed at Nokians) is whether or not they can release a bit
> more info to make this possible.
>
> We could do AGPS LTO (Long term orbit) for example over Wifi (assuming
> this isn't already in the pipeline and is not impossible due to
> something missing from the chip, etc.).
>
> I see that gpsdriver creates/uses/modifies a file called
> /var/lib/gsp/nvd_data which contains a few headings and lots of
> numbers. I've had a quick look at these but can't work out what they
> are, but the numbers certainly change (e.g. from one day to the next
> at the very least in my minimal testing). Anyone with more experience
> of GPS-y things have any ideas what these might represent?
>
> I also see there's a file called gps_last_saved_report which is
> presumably fed back to the GPS to avoid a cold start (and to give it
> credit, the latter starts are certainly faster, just not AGPS faster,
> afai have heard they should be anyway).
>
> Any thoughts?
>
> Cheers,
>
>
> Simon
>
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