EG21 : How bring up wwan0 interface

IoT Modules LTE Standard Module
1

Hello,

I’m working with EG21 module (version EG21GGBR07A11M1G) on Yocto (kernel version : 5.10.35-lts).
I’ve set the USB interface and integrate qmi_wwan_q.c driver into my kernel.
Now seems all done in right mode because under /sys/kernel/debug/usb/device I see Quectel device
image
on ttyUSB6.

With socat - /dev/ttyUSB6 I sent AT coomands to device

AT => OK
ATI => device info
AT+CPIN? => SIM PIN (sim not atcive)
AT+CPIN=“123” => OK
AT+CPIN? => READY (sim active)
AT+QCFG=“nwscanmode”,3,1 =>OK I aspect to hook the sim data native network (TIM operator)

Now I would bring-up wwan0 interface and to to that ifconfig wwan0 up

image

The ip address is not correct because ping 8.8.8.8 doesn’t work.
Where is my mistake?
Do I forget something in AT sequence or I need to introduce a config file as wpa_supplicant.conf ?

Thanks for any suggestion

2

Hi @ratataplam
Can you give your e-mail?And i will send the lastest wwan tools to you.

4

You can run the AT+QENG=“SERVINGCELL” command to check whether the network status is normal.
In addition, do you use it under Linux system? Or Windows?

5

The device is on my embedded device via USB interface and running in Linux YOCTO, view my screenshot in first message

6

Hello @lyman-Q,

here the response of servingcell AT command

image
image816×101 2.73 KB

after at+qcfg=“nwscanmode”,3,1 and sim pin configuration

Thanks for support

7

Hello @lyman-Q,

please check my profile for email and check in *.png file posted in my messages so to discover device configuration problem.
I’m waiting the tool.

Thanks

8

Hi @ratataplam
According to the screenshot you provided, the module is not properly registered with the network. You can perform the following checks:

  1. Run AT+QCFG= “nwscanmode”,0,1 Change the module registration network mode to automatic attempt;
  2. Please confirm whether this SIM card can be connected to the Internet normally on other devices.
    Best Regards
    Lyman