AGPS closed source drivers
wiml at hhhh.org
Fri Jan 5 06:09:31 CET 2007
On Thu Dec 28 2006, 18:39 CET, "Sean Moss-Pultz"
<sean_mosko at fic.com.tw> wrote:
> The GPS chipset we are using is a new kind of architecture that
> the processing algorithms from the actual hardware. This solves two
> important problems that have kept GPS functionality out of most GSM
Ahh, this finally all makes sense. Some actual location-finding
computations are offloaded onto the host CPU. So the gpsd is actually
doing some nontrivial work; it's not just a DRM-like module to
enforce the use of an expensive AGPS server.
So, from the perspective of wanting an open, freely usable gps
receiver on the Neo1973, I think this means a couple of things. One
is that the gpsd is doing fairly complicated things, and the
communication between it and the GPS hardware is probably fairly low-
level radio data, in a format specific to the receiver chip. This
means that producing an open-source gpsd will be a lot more work. (On
the other hand, open-source gps receivers exist already: http://
gps.psas.pdx.edu/ http://gps.psas.pdx.edu/OpenGnssProjects .) The
upside, though, is that an open-source gpsd could have the
opportunity to do new and interesting things.
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