EM7455 modem --location-enable-gps-unmanaged fails

Belisko Marek marek.belisko at gmail.com
Wed Jun 12 06:29:14 UTC 2019

On Wed, Jun 12, 2019 at 6:31 AM Aleksander Morgado
<aleksander at aleksander.es> wrote:
> Hey,
> > I'm trying to setup GPS support for EM7455 modem by using 1.10.0 release of MM.
> > I tried to use following script from [0] to setup unmanaged raw gps
> > mode so then /dev/ttyUSB1 can be used by gpsd to get coordinates.
> >
> > While running step: mmcli -m 0 --location-enable-gps-unmanaged I get:
> > error: couldn't setup location gathering:
> > 'GDBus.Error:org.freedesktop.ModemManager1.Error.Core.Unsupported:
> > Cannot enable unsupported location sources: 'gps-unmanaged''
> >
> > Anything I'm missing here? Or should I use method described here [1] ?
> >
> Unmanaged GPS support for the EM7455 is not implemented yet in
> ModemManager. It's probably an easy thing to do ($GPS_START and
> $GPS_STOP to the NMEA TTY) but hasn't been integrated yet.
> If you want to use GPS via MM, you should be able to use the
> non-unmanaged setup via QMI LOC and the other MM operations (e.g.
> --location--enable-gps-raw, --location-enable-gps-nmea)
OK thanks. I want to use GSP with gpsd so probably I'll blacklist GSS
port from MM (not sure if it's necessary)
and then just start GPS using $GPS_START AT command. This command
should be issues on GPS port or some other?
Thanks a lot.
> --
> Aleksander
> https://aleksander.es



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