On Wed, 2017-04-12 at 13:21 +0000, Karoly Pados wrote: > Hello, > > I have a MC7455 form Sierra Wireless. It is working fine for data > communication, but ModemManager doesn't seem to be able to recognize > the locations services (GPS and A-GPS) provided by the modem. > > mmcli -m 0 --location-status > > /org/freedesktop/ModemManager1/Modem/0 > ---------------------------- > Location | capabilities: '3gpp-lac-ci' > | enabled: '3gpp-lac-ci' > | signals: 'no' > > If I start ModemManager with the --debug flag and then issue AT- > commands using --command by hand, I can get a GPS fix and retrieve > the location using raw AT commands. (This also means that in my case > there is no need to unlock location services using a password.) > > I read on this list that the modem needs to be in QMI-mode for MM to > support location data. I think this is already the case because when > I start MM in debug mode I can see it is using QMI to communicate. > > Is there anything else I can do or need to check to make location > data in MM working? Or any way I can help to implement support for > it?
At the moment, no. The device is likely in MBIM mode which is why you don't get location data. There are two options we are exploring for ModemManager: 1) use the MBIM QMI passthrough to provide the location data that QMI can provide, which will work with this device because it's a Qualcomm- based one 2) if that fails, see if we can use the AT ports for GPS This is mainly just a problem for MBIM devices, because the MBIM protocol specification does not contain any GPS-related options. That is left to vendor proprietary methods, as you've discovered :) So TLDR; you can't do this yet but it's at least being thought about/worked on. If you're interested in helping fix this, we can use either code or testing... Thanks! Dan > My software: > # uname -a > Linux a13-olinuxino 4.9.21 #2 SMP Mon Apr 10 10:29:48 CEST 2017 > armv7l GNU/Linux > # ModemManager --version > ModemManager 1.6.2 > ... > # qmicli --version > qmicli 1.16.0 > ... > > > Thank you for your help, greetings, > > Károly Pados > > tec4data > finding of facts! > thoerl 35; 8621 thoerl; austria > mob +43 680 5577 310 > uid atu44131505 > mail [email protected] > http://www.tec4data.at > > This email and any associated attachment are confidential. > Unless you belong to the specified recipients, immediately notify the > sender. > The content may not be copied and given to third parties. > ___________________________________________________________________ > _______________________________________________ > ModemManager-devel mailing list > [email protected] > https://lists.freedesktop.org/mailman/listinfo/modemmanager-devel _______________________________________________ ModemManager-devel mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/modemmanager-devel
