Leveraging GPS in MC7700

matthew stanger stangerm2 at gmail.com
Mon Feb 6 03:32:59 UTC 2017

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
  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
for more info. Hope this helps.


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>
> _______________________________________________
> ModemManager-devel mailing list
> ModemManager-devel at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/modemmanager-devel
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