[OpenWrt-Devel] [ModemManager] How can I make ModemManager work right?

[Aleksander Morgado]

Hey,

> I checked the vid:pid. It is "1519:0443". I found this via lsusb -v:
>
> SIERRA WIRELESS HL7528
> root at LEDE:~# lsusb -v
> Bus 001 Device 002: ID 1519:0443   <<<<<<<<<
> Bus 001 Device 001: ID 1d6b:0002
> Bus 002 Device 001: ID 1d6b:0003
>
> But I changed modem to new one because you said Sierra HL7528 would only work with ppp method and it's not supposed to be.
> Now I am testing with QUECTEL EC25-E MINIPCIE / EC25EFA MINIPCIE.
>
> It's vid:pid is shown:
>
> root at LEDE:~# lsusb -v
> Bus 001 Device 002: ID 2c7c:0125   <<<<<<<<<
> Bus 001 Device 001: ID 1d6b:0002
> Bus 002 Device 001: ID 1d6b:0003
>
> And now with this modem most prints look good:
>
> root at LEDE:~# mmcli -m 0
>   --------------------------------
>   General    |            dbus path: /org/freedesktop/ModemManager1/Modem/0
>                 |            device id: 97ffc2eeb6d3ad975d9089850aa3b9b494529919
>   --------------------------------
>   Hardware |         manufacturer: Quectel
>                |                model: EC25
>                |    firmware revision: EC25EFAR04A02M4G_SKT
>                |            supported: gsm-umts, lte
>                |              current: gsm-umts, lte
>                |         equipment id: 356673040475612
>   --------------------------------
>   System    |               device: /sys/devices/platform/1a0c0000.usb/usb1/1-2
>                 |              drivers: option
>                 |               plugin: Quectel
>                 |         primary port: ttyUSB2
>                 |                ports: ttyUSB0 (qcdm), ttyUSB2 (at), ttyUSB3 (at)

Unfortunately, this device is not yet using QMI. If you attempt to
connect it, it would be connected via PPP. This is not a problem of
the device, your system is lacking proper QMI support.

>
> I only enabled QMI via make menuconfig of openwrt.

You probably didn't do this right.

> I didn't enable MBIM via make menuconfig of openwrt.
> I didn't look at the make kernel_menuconfig of openwrt.
>
> The state of Status is "enabled" and the registration of 3GPP is "idle". Does this mean the modem is connected to the bearer/operator network and the data usage is enabled?
>

No. Status "enabled" means that your modem is not even registered in
the network!

> I found a documentation:
> https://docs.ubuntu.com/core/en/stacks/network/network-manager/docs/configure-cellular-connections
>
> This document shows using of "nmcli" to setup network interface like wwan.
> Do I need this also? I guess though.
> Do I need NetworkManager? If so, where can I get it? I searched from the place ( https://github.com/openwrt/packages.git ) where ModemManager for openwrt exist, but NetworkManager is not found there.
>

I've never seen an openwrt system using NetworkManager instead of
netifd, so not sure if that exists at all.

>
> And from the prints above, there are errors for "mmcli -b 0" and "mmcli -m 0 --list-bearers" I don't guess these errors are important but are they?
>

Those errors just mean that no bearer object was created. There was no
bearer object created because the modem isn't even registered in the
network.

> F.Y.I. Let me show you entry for /etc/config/network
>
> config interface 'broadband'
>         option device '/sys/devices/platform/1a0c0000.usb/usb1/1-2'
>         option proto 'modemmanager'
>         option apn 'lte-internet.sktelecom.com'
>
> With this prints can I judge that the ModemManager is ported and working well?
>

No, not at all, a lot of work is still missing to integrate that
correctly I'm afraid.

-- 
Aleksander
https://aleksander.es

_______________________________________________
openwrt-devel mailing list
openwrt-devel at lists.openwrt.org
https://lists.openwrt.org/mailman/listinfo/openwrt-devel