Leveraging GPS in MC7700

[matthew stanger]

Hi Adam,

First check to make sure you can get GPS location and not just 3gpp
location, i.e. location from just the cell tower. Run 'mmcli -m 0
--location-status' and check capabilities. You'll want to see something
like:
/org/freedesktop/ModemManager1/Modem/0
  ----------------------------
  Location | capabilities: '3gpp-lac-ci, gps-raw, gps-nmea'
           |      enabled: '3gpp-lac-ci, gps-raw, gps-nmea'
           |      signals: 'no'

If you see more than the 3gpp option then you should be able to run 'sudo
mmcli -m 0 --location-enable-gps-raw'. This will setup the GPS but keep MM
from grabbing the GPS stream. Now you should be able to point GPSd to the
port the stream is on. See
https://sigquit.wordpress.com/2012/03/29/enabling-gps-location-in-modemmanager/
for more info. Hope this helps.

Cheers,

On Sun, Feb 5, 2017 at 7:30 PM, Adam Sherman <adam at sherman.ca> wrote:

> I have a Sierra Wireless MC7700 in my Thinkpad X230 which I would like
> to use to provide location data to the rest of the system.
>
> mmcli 1.6.4
> qmicli 1.17.900
>
> Seems like ModemManager can successfully get a location, according to
> the output of --location-get.
>
> How, how do I get this data into, say, gpsd[1]?
>
>   -------------------------
>   System   |         device: '/sys/devices/pci0000:00/0000:
> 00:14.0/usb3/3-4'
>            |        drivers: 'qmi_wwan, qcserial'
>            |         plugin: 'Generic'
>            |   primary port: 'cdc-wdm0'
>            |          ports: 'ttyUSB0 (qcdm), ttyUSB2 (at), cdc-wdm0
> (qmi), wwp0s20u4i8 (net)'
>   -------------------------
>
> My device doesn't seem to be showing a ttyUSBn for GPS data.
>
> Thanks for your help,
>
> A.
>
>
>
> --
> Adam Sherman <adam at sherman.ca>
> _______________________________________________
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> ModemManager-devel at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/modemmanager-devel
>
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