Dears,
I run the image openwrt-23.05.0 ramips-mt7621 zyxel_lte3301-plus squashfs-sysupgrade.
About all seems running, except the 4G LTE module.
This is the Quectel EG06-E, which, I think, should (OWRT internally) communicate through Serial-USB, with a /dev/ttyUSB0 device.
BUT,
The device "/dev/ttyUSB0" don't appear, is missing, don't exists.
Is this hardware, target fully functional ?
Do I have something missing, wrong ? (EG06 driver ?)
Thanks in advance for helping me.
Charly.
Please show the output of cat /sys/kernel/debug/usb/devices
root@OpenWrt:~# cat /sys/kernel/debug/usb/devices
T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 2
B: Alloc= 0/800 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=1d6b ProdID=0002 Rev= 5.15
S: Manufacturer=Linux 5.15.134 xhci-hcd
S: Product=xHCI Host Controller
S: SerialNumber=1e1c0000.xhci
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl=256ms
T: Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=5000 MxCh= 1
B: Alloc= 0/800 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 3.00 Cls=09(hub ) Sub=00 Prot=03 MxPS= 9 #Cfgs= 1
P: Vendor=1d6b ProdID=0003 Rev= 5.15
S: Manufacturer=Linux 5.15.134 xhci-hcd
S: Product=xHCI Host Controller
S: SerialNumber=1e1c0000.xhci
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl=256ms
You have no modem. See if you need to power it up through GPIO or something like that.
Indeed:
Hello Andrew, thanks !
I suspected such kind of pb, but I am not ease with how / which command I can use to set/clear gpio, and how they are mapped, which is the pwr of the chip,...
Oh that progresses !
I use the image built with the online tool for build, then I don't know what is the content of the file you suggested to verify, but you gave me the way to progress.
I 1st checked that :
root@OpenWrt:~# cat /sys/class/gpio/
export ... ... gpio438/ gpio443/ gpiochip448/ power_modem/
and I put that :
root@OpenWrt:~# echo 1 > /sys/class/gpio/power_modem/value
AND NOW I See that :
T: Bus=02 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=5000 MxCh= 0
D: Ver= 3.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS= 9 #Cfgs= 1
P: Vendor=2c7c ProdID=0306 Rev= 3.10
S: Manufacturer=Quectel
S: Product=EG06-E
S: SerialNumber=0123456789ABCDEF
C:* #Ifs= 5 Cfg#= 1 Atr=a0 MxPwr=504mA
I:* If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
E: Ad=81(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms
E: Ad=01(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms
I:* If#= 1 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
E: Ad=83(I) Atr=03(Int.) MxPS= 10 Ivl=32ms
E: Ad=82(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms
E: Ad=02(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms
I:* If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
E: Ad=85(I) Atr=03(Int.) MxPS= 10 Ivl=32ms
E: Ad=84(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms
E: Ad=03(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms
I:* If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
E: Ad=87(I) Atr=03(Int.) MxPS= 10 Ivl=32ms
E: Ad=86(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms
E: Ad=04(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms
I:* If#= 4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=qmi_wwan
E: Ad=89(I) Atr=03(Int.) MxPS= 8 Ivl=32ms
E: Ad=88(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms
E: Ad=05(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms
I think that after that I would have to build myself the system.
I "gitted" it and I observed that the file you mention is correct.
I keep you informed later,.. later, because I never yet built a system.
In any case, thank you already for your super quick help.
Charly
Now you need to follow https://openwrt.org/docs/guide-user/network/wan/wwan/ltedongle
Thank you Andrew.
The LTE runs.
I switches it on at startup in "/etc/rc.local" (as discovered in LuCI) by putting the command "echo 1 > /sys/class/gpio/power_modem/value".
I also configured (about randomly 
) the chain between the LTE and some wired and WiFi devices, and all seem run.
Don't ask me (now) how and why NAT and firewall run, but routing seems running. 
My goal is now to understand what I did,..
.. and my final goal is to configure this device as my VPN "gateway" (with OpenVPN) to my VPN provider.
OWRT is not very trivial to use, and I think I will have to learn many things before all run like I wish.
Thanks again,
Regards,
Charly.