[OpenWrt-Devel] Unable to read SMS with uqmi

Ameretat Reith ameretat.reith at gmail.com
Sat Nov 26 17:05:22 EST 2016

Hi all.  Sorry if It's not right place to ask this question.

I got a gl-inet Domino board having a Quectel UC20 UMTS/HSPA+ module [1]
installed on.  I was under the impression that it can talk with QMI but 
then I
checked website, realized It's nowhere mentioned so. On the other hand on
booting I see kernel `qmi_wwan` makes device `/dev/cdc-wdm0` and detects it
as QMI undrestanding interface:

[   47.272115] qmi_wwan 1-1.2:1.4: cdc-wdm0: USB WDM device
[   47.277431] qmi_wwan 1-1.2:1.4 wwan0: register 'qmi_wwan' at 
usb-ehci-platform-1.2, WWAN/QMI device, 02:77:4d:a8:b1:ec
[   47.287013] usbcore: registered new interface driver qmi_wwan

I can even send some commands with uqmi to module, like setting PIN, 
networks and registering on network; but I cannot read SMS while I can read
them with AT commands from serial interface.

I updated uqmi to last commit (d682e966615fc652da6e4e26b57aa3adfebeb2fe)
and still `--list-messages` returns empty.  Linux version is 4.4.14.

This is first time I play with a (presumably) QMI interface and my first
exprience with OpenWrt.  I'm very grateful of any input giving me an idea 
understand what is wrong and if It's something with uqmi I may be able to
participate solve the problem.

I got a Quectel_UC20_Mini_PCIe_Hardware_Design_V1.3 document from [1] and
It's mentioned there, this modules is based on Qualcomm MDM6200 platform.
I'm not sure what does platform mean here, but If It's a Gobi modem It's
known to provide QMI.

1: http://www.quectel.com/product/prodetail.aspx?id=65
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