GPS compatible modems.

[Dan Williams]

On Fri, 2014-11-28 at 08:47 +0100, Yegor Yefremov wrote:
> On Fri, Nov 28, 2014 at 12:22 AM, Aleksander Morgado
> <aleksander at aleksander.es> wrote:
> > On Fri, Nov 28, 2014 at 12:15 AM, David McCullough
> > <david.mccullough at accelecon.com> wrote:
> >> Aleksander Morgado wrote the following:
> >>> On Thu, Nov 27, 2014 at 11:05 PM, Marc Murphy <marcmltd at marcm.co.uk> wrote:
> >>> > I am on the ti release
> >>> > Linux version 3.12.10-ti2013.12.01
> >>> >
> >>> > And my buildroot is 2014.05 and I have brought mm, libqmi and libmbim up to the latest.
> >>> > MODEM_MANAGER_VERSION = 1.4.0
> >>> > LIBQMI_VERSION = 1.10.2
> >>> > LIBMBIM_VERSION = 1.10.0
> >>> >
> >>> > It would be good to know what you are on.  I will also grab the latest kernel and build to see if that makes a diference.
> >>>
> >>>
> >>> At least for the MC7710 running in QMI mode, you should be able to
> >>> enable the GPS.
> >>
> >> Sierra Wireless MC7354 seems to be working (no GPS antenna at the moment so
> >> can't be 100% sure but plenty og NMEA info).
> >
> >
> > Yes, for QMI modems is pretty straightforward: if they support the PDS
> > service, then GPS support will work. And if they don't have the PDS
> > service, we may still get it working via standard NMEA ttys (as with
> > the cinterion PHS8).
> 
> What firmware version do you have on your MC7710? We got some cards
> with old firmware, that wasn't working well with Linux, i.e. ttys were
> not responding to AT commands. First with firmware updates I could get
> the card working. Then I switched it to QMI mode and after that it was
> working like a charm, comparable with it's successor MC73xx series.

I would strongly recommend QMI mode on the MC77xx (7700, 7710, 7750).
DirectIP mode is a bit sketchy on these.

Dan