Archer MR200 built in 4G modem in QMI mode

Installing and Using OpenWrt
1

Hello
I have Archer MR200 with built in Qualcom 4G modem and OpenWRT 19.07.07 running on this device. I was lucky and after some manipulations I have able to set it's modem in qmi mode. All of packages described here was installed.
So I get encouraging answers and finally has cdc device

~# ls -l /dev/cdc-wdm0
crw-------    1 root     root      180, 176 Jul 29 11:37 /dev/cdc-wdm0

lsusb
Bus 001 Device 002: ID 05c6:9025 Qualcomm, Inc. Qualcomm HSUSB Device
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

lsusb -t
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ohci-platform/1p, 12M
    |__ Port 1: Dev 2, If 0, Class=Vendor Specific Class, Driver=option, 12M
    |__ Port 1: Dev 2, If 1, Class=Vendor Specific Class, Driver=usbfs, 12M
    |__ Port 1: Dev 2, If 2, Class=Vendor Specific Class, Driver=option, 12M
    |__ Port 1: Dev 2, If 3, Class=Vendor Specific Class, Driver=option, 12M
    |__ Port 1: Dev 2, If 4, Class=Vendor Specific Class, Driver=qmi_wwan, 12M
    |__ Port 1: Dev 2, If 5, Class=Mass Storage, Driver=, 12M

then dmesg command shows I haven't any ttyUSB ports

dmesg | grep usb
[    5.957169] usbcore: registered new interface driver usbfs
[    5.962948] usbcore: registered new interface driver hub
[    5.968463] usbcore: registered new device driver usb
[    6.004560] phy phy-usbphy.0: remote usb device wakeup disabled
[    6.010607] phy phy-usbphy.0: UTMI 16bit 30MHz
[   12.412244] usb 1-1: new full-speed USB device number 2 using ohci-platform
[   13.310103] usbcore: registered new interface driver cdc_acm
[   13.393673] usbcore: registered new interface driver cdc_wdm
[   13.491181] hso: drivers/net/usb/hso.c: Option Wireless
[   13.496814] usbcore: registered new interface driver hso
[   13.558405] usbcore: registered new interface driver ipheth
[   13.952267] usbcore: registered new interface driver usbserial
[   13.958320] usbcore: registered new interface driver usbserial_generic
[   13.965103] usbserial: USB Serial support registered for generic
[   14.171525] usbcore: registered new interface driver cdc_ether
[   14.201299] usbcore: registered new interface driver cdc_ncm
[   14.394231] usbcore: registered new interface driver huawei_cdc_ncm
[   14.455515] usbcore: registered new interface driver keyspan
[   14.461377] usbserial: USB Serial support registered for Keyspan - (without firmware)
[   14.469524] usbserial: USB Serial support registered for Keyspan 1 port adapter
[   14.477091] usbserial: USB Serial support registered for Keyspan 2 port adapter
[   14.484690] usbserial: USB Serial support registered for Keyspan 4 port adapter
[   14.710443] usbcore: registered new interface driver MOSCHIP usb-ethernet driver
[   14.811147] qmi_wwan 1-1:1.4 wwan0: register 'qmi_wwan' at usb-101c1000.ohci-1, WWAN/QMI device, 0e:d2:97:e5:4a:d1
[   14.822083] usbcore: registered new interface driver qmi_wwan
[   14.842430] usbcore: registered new interface driver rndis_host
[   14.932217] usbcore: registered new interface driver cdc_mbim
[   15.384391] usbcore: registered new interface driver option
[   15.390165] usbserial: USB Serial support registered for GSM modem (1-port)
[   15.416815] usbcore: registered new interface driver qcserial
[   15.422855] usbserial: USB Serial support registered for Qualcomm USB modem

Then I used next

echo "05c6 9025" > /sys/bus/usb-serial/drivers/option1/new_id

and get ttyUSB ports, but only till next reboot of device. It works only for current session.
After router's restart I have't ttyUSB anymore
So the first question is there a way to fix ttyUSB not only for current session?

dmesg | grep usb
[    5.957169] usbcore: registered new interface driver usbfs
[    5.962948] usbcore: registered new interface driver hub
[    5.968463] usbcore: registered new device driver usb
[    6.004560] phy phy-usbphy.0: remote usb device wakeup disabled
[    6.010607] phy phy-usbphy.0: UTMI 16bit 30MHz
[   12.412244] usb 1-1: new full-speed USB device number 2 using ohci-platform
[   13.310103] usbcore: registered new interface driver cdc_acm
[   13.393673] usbcore: registered new interface driver cdc_wdm
[   13.491181] hso: drivers/net/usb/hso.c: Option Wireless
[   13.496814] usbcore: registered new interface driver hso
[   13.558405] usbcore: registered new interface driver ipheth
[   13.952267] usbcore: registered new interface driver usbserial
[   13.958320] usbcore: registered new interface driver usbserial_generic
[   13.965103] usbserial: USB Serial support registered for generic
[   14.171525] usbcore: registered new interface driver cdc_ether
[   14.201299] usbcore: registered new interface driver cdc_ncm
[   14.394231] usbcore: registered new interface driver huawei_cdc_ncm
[   14.455515] usbcore: registered new interface driver keyspan
[   14.461377] usbserial: USB Serial support registered for Keyspan - (without firmware)
[   14.469524] usbserial: USB Serial support registered for Keyspan 1 port adapter
[   14.477091] usbserial: USB Serial support registered for Keyspan 2 port adapter
[   14.484690] usbserial: USB Serial support registered for Keyspan 4 port adapter
[   14.710443] usbcore: registered new interface driver MOSCHIP usb-ethernet driver
[   14.811147] qmi_wwan 1-1:1.4 wwan0: register 'qmi_wwan' at usb-101c1000.ohci-1, WWAN/QMI device, 0e:d2:97:e5:4a:d1
[   14.822083] usbcore: registered new interface driver qmi_wwan
[   14.842430] usbcore: registered new interface driver rndis_host
[   14.932217] usbcore: registered new interface driver cdc_mbim
[   15.384391] usbcore: registered new interface driver option
[   15.390165] usbserial: USB Serial support registered for GSM modem (1-port)
[   15.416815] usbcore: registered new interface driver qcserial
[   15.422855] usbserial: USB Serial support registered for Qualcomm USB modem
[  188.140331] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB0
[  188.154665] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB1
[  188.168950] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB2

Then I was tryed to use some basic qmi commands but it's not worked for me. All the time on any command I have "Failed to open device"

uqmi -d / dev / cdc-wdm0 --get-current-settings
Failed to open device
uqmi -d / dev / cdc-wdm0 --get-data-status
Failed to open device
uqmi -d / dev / cdc-wdm0 --get-signal-info
Failed to open device

I add new WAN QMI intesface and of course the connection didn't work

Iterface 'yota' is setting up now
Wed Jul 28 16:04:04 2021 daemon.notice netifd: yota (4092): Waiting for SIM initialization
Wed Jul 28 16:04:05 2021 daemon.notice netifd: yota (4092): PIN verification is disabled
Wed Jul 28 16:04:05 2021 daemon.notice netifd: yota (4092): Waiting for network registration
Wed Jul 28 16:04:05 2021 daemon.notice netifd: yota (4092): Starting network yota
Wed Jul 28 16:04:05 2021 daemon.notice netifd: yota (4092): Unable to connect IPv4
Wed Jul 28 16:04:05 2021 daemon.notice netifd: yota (4174): Stopping network yota
Wed Jul 28 16:04:05 2021 daemon.notice netifd: yota (4174): Command failed: Permission denied
Wed Jul 28 16:04:05 2021 daemon.notice netifd: Interface 'yota' is now down

So guys is there any chance to have working qmi in my case. So I'm out of ideas. And yes I also tryed usb modeswitch and thats not work also. I even haven't any answer from it

usbmode -l
usbmode -s

So I spend a lot of time and it's to bad to stop in one step from... Please any help and suggestions are welcome. I hope somebody can help me. Thanx!

2

add your echo to /etc/rc.local

remove unnecessary spaces

show its settings - copy/paste the relevant part of /etc/config/network

3

Thanx AndrerwZ for your quick answer.

Great! It works. And I have third port ttyUSB3. ttyUSB2 was the last one in my message abobe.

root@OpenWrt:~# dmesg | grep usb
[    5.960733] usbcore: registered new interface driver usbfs
[    5.966498] usbcore: registered new interface driver hub
[    5.972017] usbcore: registered new device driver usb
[    6.007430] phy phy-usbphy.0: remote usb device wakeup disabled
[    6.013492] phy phy-usbphy.0: UTMI 16bit 30MHz
[   12.374294] usb 1-1: new full-speed USB device number 2 using ohci-platform
[   13.308560] usbcore: registered new interface driver cdc_acm
[   13.364945] usbcore: registered new interface driver cdc_wdm
[   13.486919] hso: drivers/net/usb/hso.c: Option Wireless
[   13.492484] usbcore: registered new interface driver hso
[   13.540401] usbcore: registered new interface driver ipheth
[   13.933830] usbcore: registered new interface driver usbserial
[   13.939990] usbcore: registered new interface driver usbserial_generic
[   13.946775] usbserial: USB Serial support registered for generic
[   14.156414] usbcore: registered new interface driver cdc_ether
[   14.189948] usbcore: registered new interface driver cdc_ncm
[   14.387363] usbcore: registered new interface driver huawei_cdc_ncm
[   14.447587] usbcore: registered new interface driver keyspan
[   14.453461] usbserial: USB Serial support registered for Keyspan - (without firmware)
[   14.461604] usbserial: USB Serial support registered for Keyspan 1 port adapter
[   14.469165] usbserial: USB Serial support registered for Keyspan 2 port adapter
[   14.476756] usbserial: USB Serial support registered for Keyspan 4 port adapter
[   14.706737] usbcore: registered new interface driver MOSCHIP usb-ethernet driver
[   14.805033] qmi_wwan 1-1:1.4 wwan0: register 'qmi_wwan' at usb-101c1000.ohci-1, WWAN/QMI device, 3a:85:58:1a:e3:9b
[   14.815957] usbcore: registered new interface driver qmi_wwan
[   14.832970] usbcore: registered new interface driver rndis_host
[   14.916395] usbcore: registered new interface driver cdc_mbim
[   15.348782] usbcore: registered new interface driver option
[   15.354644] usbserial: USB Serial support registered for GSM modem (1-port)
[   15.381579] usbcore: registered new interface driver qcserial
[   15.387635] usbserial: USB Serial support registered for Qualcomm USB modem
[   29.587507] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB0
[   29.601703] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB1
[   29.615984] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB2
[   29.630191] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB3

root@OpenWrt:~# ls /dev | grep ttyUSB
ttyUSB0
ttyUSB1
ttyUSB2
ttyUSB3

Sorry thats my fault. I remove all spaces and get some result with one command:

root@OpenWrt:~# uqmi -d /dev/cdc-wdm0 --get-data-status
"disconnected"
root@OpenWrt:~#

All other commands like --get-current-settings or --get-signal-info are freezing up console or shows "Failed to connect to service".

config interface 'yota'
	option proto 'qmi'
	option apn 'internet.yota'
	option device '/dev/cdc-wdm0'
	option delegate '0'
	option pdptype 'ipv4'
	option auth 'none'

Any ideas? I still cant get it to work

4

add ff to your echo line:
echo "05c6 9025 ff" > /sys/bus/usb-serial/drivers/option1/new_id

Correct your pdptype - ipv4 is not a valid option, the allowed values are IP (for IPv4), IPV6 (for IPv6) or IPV4V6 (for dual-stack)
Remove delegate, auth
Add option dhcp '0' (subject to test)

5

It seems a great solution. Now all qumi command are working

root@OpenWrt:~# uqmi -d /dev/cdc-wdm0 --get-data-status
"disconnected"
root@OpenWrt:~# uqmi -d /dev/cdc-wdm0 --get-current-settings
"Out of call"
root@OpenWrt:~# uqmi -d /dev/cdc-wdm0 --get-signal-info
{
        "type": "lte",
        "rssi": -88,
        "rsrq": -11,
        "rsrp": -114,
        "snr": 104
}
root@OpenWrt:~#

Then I creating wan to connect. Here is actual part of network file

config interface '4G'
	option proto 'qmi'
	option apn 'internet.yota'
	option device '/dev/cdc-wdm0'
	option pdptype 'ip'
	option dhcp '0'

But connection is still failed

Sat Jul 31 08:16:47 2021 daemon.notice netifd: Interface '4G' is setting up now
Sat Jul 31 08:16:47 2021 daemon.notice netifd: 4G (3564): Waiting for SIM initialization
Sat Jul 31 08:16:47 2021 daemon.notice netifd: 4G (3564): PIN verification is disabled
Sat Jul 31 08:16:48 2021 daemon.notice netifd: 4G (3564): Waiting for network registration
Sat Jul 31 08:16:48 2021 daemon.notice netifd: 4G (3564): Starting network 4G
Sat Jul 31 08:16:48 2021 daemon.notice netifd: 4G (3564): Unable to connect IPv4
Sat Jul 31 08:16:48 2021 daemon.notice netifd: 4G (3620): Stopping network 4G
Sat Jul 31 08:16:49 2021 daemon.notice netifd: 4G (3620): Command failed: Permission denied
Sat Jul 31 08:16:49 2021 daemon.notice netifd: Interface '4G' is now down

And uqmi commans are not working and again starts to freeze up the console.

6

Consider using ROOter. This firmware is based on OpenWrt and is known for great modems support.
You can ask for an up-to-date image for your device here.

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