[maemo-developers] N810 AGPS?

[From: Charles Werbick]

On 1/30/08, 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?

I've been thinking the same...

Namely, can we build an agps server into the n8x0 to have the cpu
assist the gps chip?
(i.e.- set the agps to localhost and compute location on the ARM.)

cheers,
kernelpanic