Forest Bond <forest(a)alittletooquiet.net> writes:
On Tue, Mar 05, 2013 at 10:45:15PM +0100, Bjørn Mork wrote:
> Forest Bond <forest(a)alittletooquiet.net> writes:
> > Anyway, I notice that one of the ports appears to be QCDM. It appears that
> > support is partially implemented in oFono? But I don't know QCDM at all.
> > we use it to do netreg?
> What kind of Sierra device is this? And what vid is it using?
Well, I'm really after a few devices:
* Sierra Wireless USB 598 (Sprint/Telus branded)
* Sierra Wireless MC5728V (Feeney Wireless Skyus 3G)
The 598 has VID 0025. I think the Skyus 3G does, too (at least in some
configurations), but I don't have one in front of me to check. In any case it
is a very similar part to the 598. All I have to test with right now is a Telus
demo device (with no service :/) as my other parts were returned to their
respective owners some time ago.
> I ask because I have only seen QCDM ports active on Sierra devices
> in firmware modes with rmnet/qmi_wwan interfaces. In which case you
> should have QMI support.
I couldn't get qmicli to do anything with any of the ports, but test-qcdm (from
the ModemManager source tree) seems to like talking to the last port.
> > If not, I could probably implement (partial) CnS support at some point.
> > just not sure I will have time to do it right away.
> And those modes do not have any CnS ports.
These parts definitely have CnS ports. We've used CnS for an unrelated project
with all of these devices.
In all, I think the ports are as follows:
1. AT commands
3. NMEA 0183 (GPS)
WRT #3, I remember seeing what looked like NMEA a while back using a Sprint
part. WRT #4 I've only ever tested the Telus part.
What do you think?
Thanks. I think you are right. Learning something new every day.
Until know I thought they had a clear split between "Qualcomm" and
"Sierra" protocols, but these devices obviously do a mix. Is the NMEA
port Sierra style (enabled using the SetNmea control message) or
Qualcomm style (enabled by writing "$GPS_START" to the port)?