still don't know how to make progress on 'write our own', but one last
attempt before i surrender.
there is a standalone code (gps2.c) given at
http://wiki.maemo.org/N900_GPS_Reverse_Engineering
"which show GPS data from phonet modem stack"
besides the standard includes, it only references
#include <linux/phonet.h>
even when compiled on nemo, it runs fine under maemo.
would you expect this to run under nemo? or maybe need trivial tweaks? or
is the phone stack on nemo not complete enough?
on nemo, the initial socket call fails the assertion,
sck = socket(AF_PHONET, SOCK_DGRAM, 0);
assert(sck >= 0);
On Wed, Aug 15, 2012 at 11:13 PM, Jonathan Wilson <[email protected]>wrote:
> letters.random13 wrote:
>
>> thanks for all the valuable summary info
>>
>>
>>
>> 6.GPS (location-adaptation-rx-51, liblocation-headers)
>>> GPS is handled through the cellular modem over ISI (same as calls, SMS
>>> etc)
>>> There is a header file out there (in a Nokia QT SDK among other places)
>>> called pn_location_isi.h that contains details of the ISI/phonet packets
>>> and data necessary to talk to the GPS chip.
>>> As far as I know, no-one has yet started working on an open GPS setup for
>>> the N900. The way to replace this bit then would be for someone to take
>>> pn_location_isi.h and from there write a new GPS system (or a plugin for
>>> an
>>> existing GPS system)
>>>
>>> can you point a newbie toward a more thorough description of this task,
>>> or
>>>
>> how to gather required info (or, later, the required expertise)?
>>
>> i did look over pn_location_isi.h, but not sure how to proceed.
>>
>> i'm not sure if or how far meego got in this direction?
>> http://wiki.meego.com/MeeGo_**Porting_Guide#Location_**Adaptation<http://wiki.meego.com/MeeGo_Porting_Guide#Location_Adaptation>
>> https://bugs.meego.com/show_**bug.cgi?id=11796<https://bugs.meego.com/show_bug.cgi?id=11796>
>> or what could be used from meego?
>>
> As far as I am aware, MeeGo (and hence Nemo and anything else pulling in
> the N900 closed source hardware adaptation blobs) are currently using
> closed-source binary blobs from https://build.pub.meego.com/**
> package/show?package=location-**adaptation-rx-51&project=CE%**
> 3AAdaptation%3AN900<https://build.pub.meego.com/package/show?package=location-adaptation-rx-51&project=CE%3AAdaptation%3AN900>
> How the upper layers (whatever they may be) sit on top of those blobs I
> dont know.
>
> The closed source blobs are pretty much a direct port of the Maemo
> Fremantle GPS blobs.
>
> So if we want open source GPS on the N900, we will need to use
> pn_location_isi.h and stuff and write our own.
>
>
>
>
