Quectel em12-g minimal kernel version

[Nicholas Smith]

What Bjorne said, these are for Sierra Wireless modules. For Quectel MBIM
use
AT+QCFG=“usbmode”,2

if memory serves correctly

On Fri, 25 Jun 2021 at 21:42 Alexander Dydychkin <
alexander.dydychkin at vicuesoft.com> wrote:

> Nicholas Smith, how do you change the mode manually?
> I try to:
> sudo flock -x /dev/ttyUSB2 minicom -D /dev/ttyUSB2
> AT!ENTERCND="A710"
> AT!USBCOMP="1,3,10D"
> AT!RESET
>
> But it does not help.
> In addition am I correct that I can re-flash the Quectel only by using
> qmu-firmware-update?
>
>
> Bjørn Mork considering the qmicli:
> sudo mbimcli -d /dev/cdc-wdm2  --query-device-services
> Service: 'qmi'
> UUID: [d1a30bc2-f97a-6e43-bf65-c7e24fb0f0d3]:
> DSS payload: 0
> Max DSS instances: 0
> CIDs: msg (1)
>
> So it seems that it should work but:
> sudo qmicli -p -d /dev/cdc-wdm2 --device-open-mbim
> --nas-get-signal-strength
> [/dev/cdc-wdm2] Successfully got signal strength
> Current:
>         Network 'umts': '-110 dBm'
> RSSI:
>         Network 'umts': '-110 dBm'
> ECIO:
>         Network 'umts': '-15.0 dBm'
> IO: '-106 dBm'
> SINR (8): '9.0 dB'
>
> Yes, it is ok but the commands like:
> sudo qmicli -p -d /dev/cdc-wdm2 --device-open-mbim --dms-list-stored-images
> error: couldn't list stored images: QMI protocol error (57):
> 'Wms.InvalidMessageId'
> They do not work. Is it a bug or am I doing something not correctly?
>
> Thanks for the help.
>
>
>
>
>
>
> пт, 25 июн. 2021 г. в 03:24, Nicholas Smith <nicholas at nbembedded.com>:
>
>> Actually that QMI service is there....
>>
>> Service: 'qmi'
>>              UUID: [d1a30bc2-f97a-6e43-bf65-c7e24fb0f0d3]:
>>       DSS payload: 0
>> Max DSS instances: 0
>>              CIDs: msg (1)
>>
>> ... but when I try to use qmicli with --device-open-mbim I get this...
>>
>> qmicli -p -d /dev/cdc-wdm0 --device-open-mbim --nas-get-signal-strength
>> [25 Jun 2021, 10:17:27] -Warning ** [/dev/cdc-wdm0] requested MBIM
>> mode but no MBIM QMUX support available
>> error: couldn't open the QmiDevice: Could not create endpoint
>>
>> ... Even though I am compiling libqmi  with --enable-mbim-qmux (on
>> OpenWrt)
>>
>>
>> All the best,
>> Nick
>>
>>
>>
>>
>> On Fri, 25 Jun 2021 at 09:22, Bjørn Mork <bjorn at mork.no> wrote:
>> >
>> > Nicholas Smith <nicholas at nbembedded.com> writes:
>> >
>> > > I can confirm that the Quectel EM12-G most certainly does not play
>> > > nice with qmi_wwan (at least on the vendor firmware versions I have
>> > > tested, which includes several, including the latest).  The module
>> > > always inexplicably crashes after anywhere from between a couple of
>> > > hours to a couple of days of uptime.  When in MBIM mode it is stable,
>> > > but you cannot use qmicli to get detailed NAS information, or select
>> > > bands, etc... so you lose a huge amount of useful functionality.  So,
>> > > if I want to do anything out of the ordinary, I temporarily switch it
>> > > into QMI mode before switching back to MBIM mode.
>> >
>> > So it doesn't export the QMI service in MBIM mode?  That's pretty
>> > unusual for a Qualcomm based modem.
>> >
>> > You can check this with e.g
>> >
>> >  mbimcli -d /dev/cdc-wdm0  --query-device-services
>> >
>> > We normally expect an entry like:
>> >
>> >                          Service: 'qmi'
>> >                              UUID:
>> [d1a30bc2-f97a-6e43-bf65-c7e24fb0f0d3]:
>> >                       DSS payload: 0
>> >                 Max DSS instances: 0
>> >                              CIDs: msg (1)
>> >
>> >
>> > This MBIM service can be used by libqmi/qmicli for full QMI access.  See
>> > the --device-open-mbim option.  Actually, it defaults to autodetecting,
>> > so accessing QMI services should just work.
>> >
>> >
>> >
>> > Bjørn
>> _______________________________________________
>> libqmi-devel mailing list
>> libqmi-devel at lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/libqmi-devel
>
>
>>
>
> --
> With best regards,
> Alexander
>
-- 
All the best,
Nicholas

*Nicholas Smith*
NB Embedded Systems Consulting
Suite 4139
681 New Cleveland Road
Gumdale, QLD 4154
ABN: 33 644 764 763

nicholas at nbembedded.com

Google Summer of Code 2021 Mentor
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