Playing around with GPS

[George Barta]

You're right, it means a lot to see the GPS functionality in ANY way. :)

Thank you for posting this.

On 8/29/07, Mike Montour <mail at mmontour.net> wrote:
> One of the Neo1973's big selling points is its Hammerhead AGPS chip,
> however (with the exception of a few P0 developers) we haven't been able
> to do anything with it yet due to the lack of a driver.
>
> I have recently joined the "Sphyrna" reverse-engineering project at
> http://projects.linuxtogo.org/projects/sphyrna (linked from
> http://wiki.openmoko.org/wiki/Hammerhead/Protocol), and with the
> assistance of the information provided there I have put together a quick
> and (very) dirty program called "satscan".
>
> This program scans for signals from GPS satellites at several different
> Doppler-shifted frequencies, as a real GPS receiver would do during a
> "cold start" acquisition. It displays symbols on the screen representing
> the strength of each detected signal.
>
> That's _all_ that it does - this program does not receive any navigation
> data from the satellites, does not compute a position fix, or anything
> else. It is strictly a 'toy' application, but at least it lets you
> confirm that your Neo1973 actually has a GPS chip installed. :)
>
> It's available for download at:
> http://members.shaw.ca/mmontour/satscan/satscan_1.0-r0_armv4t.ipk and it
> was built against a fairly recent 2007.2 image. You might need to
> "--force-depends" the installation. A source tarball is in the same
> directory, but I can't provide assistance on how to set up your
> development environment to build it.
>
> I don't plan to maintain this program - it's a one-off demo. However I
> will continue to contribute to the reverse-engineering efforts, and I
> encourage any other interested developers to do the same.
>
>
>