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en:bpi-r3:lte

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LTE

to test the EM7455 Card (+ NGFF Key-B Adapter) on the BPI-R3 (mPCIe Slot)

Kernel-Options:

CONFIG_USB_USBNET=m
CONFIG_USB_SERIAL_OPTION=m
CONFIG_USB_SERIAL_QUALCOMM=m
CONFIG_USB_NET_CDC_MBIM=m
CONFIG_USB_NET_QMI_WWAN=m

MBIM-Mode (over wwan0)

https://gist.github.com/Juul/e42c5b6ec71ce11923526b36d3f1cb2c#connecting-using-mbim

i'm using a Congstar-SIM

APN-settings: https://forum.congstar.de/thread/46325-mobil-surfen-mit-congstar-manuelle-einstellungen-zum-mobilen-internet-apn/

first Test

root@bpi-r3:~# modprobe cdc_mbim

/etc/mbim-network.conf:
APN=internet.v6.telekom
PROXY=yes

root@bpi-r3:~# mbimcli --device=/dev/cdc-wdm0  --query-device-caps
[/dev/cdc-wdm0] Device capabilities retrieved:
              Device type: 'remote'
           Cellular class: 'gsm'
              Voice class: 'no-voice'
                SIM class: 'removable'
               Data class: 'umts, hsdpa, hsupa, lte'
                 SMS caps: 'pdu-receive, pdu-send'
                Ctrl caps: 'reg-manual'
             Max sessions: '8'
        Custom data class: 'unknown'
                Device ID: '352733105743066'
            Firmware info: 'SWI9X30C_02.24.03.00'
            Hardware info: 'EM7455'
root@bpi-r3:~# mbim-network /dev/cdc-wdm0 start
Loading profile at /etc/mbim-network.conf...
    APN: internet.v6.telekom
    APN auth protocol: unset
    APN user: unset
    APN password: unset
    mbim-proxy: yes
Querying subscriber ready status 'mbimcli -d /dev/cdc-wdm0 --query-subscriber-ready-status --no-close --device-open-proxy'...
[/dev/cdc-wdm0] Subscriber ready status retrieved: Ready state: 'device-locked'
Subscriber ID: 'unknown' SIM ICCID: '89490200001355851497' Ready info: 'none' Telephone numbers: (0) 'unknown' [/dev/cdc-wdm0] Session not closed: TRID: '4'
Saving state at /tmp/mbim-network-state-cdc-wdm0... (TRID: 4)
Querying registration state 'mbimcli -d /dev/cdc-wdm0 --query-registration-state --no-open=4 --no-close --device-open-proxy'...
[/dev/cdc-wdm0] Registration status: Network error: 'unknown' Register state: 'deregistered' Register mode: 'automatic' Available data classes: 'unknown' Curren
t cellular class: 'gsm' Provider ID: 'unknown' Provider name: 'unknown' Roaming text: 'unknown' Registration flags: 'packet-service-automatic-attach' [/dev/cdc-wdm0] Session not closed: TRID: '6'                                             
Saving state at /tmp/mbim-network-state-cdc-wdm0... (TRID: 6)
Attaching to packet service with 'mbimcli -d /dev/cdc-wdm0 --attach-packet-service --no-open=6 --no-close --device-open-proxy'...
error: operation failed: PinRequired
Saving state at /tmp/mbim-network-state-cdc-wdm0... (TRID: 8)
Starting network with 'mbimcli -d /dev/cdc-wdm0 --connect=apn='internet.v6.telekom' --no-open=8 --no-close --device-open-proxy'...                              
error: operation failed: PinRequired
Network start failed
[/dev/cdc-wdm0] Session not closed: TRID: '10'
Saving state at /tmp/mbim-network-state-cdc-wdm0... (TRID: 10)
root@bpi-r3:~#

so it looks like pin-problem and i tried this:

root@bpi-r3:~# mbimcli --device=/dev/cdc-wdm0 -p --enter-pin=1234
[/dev/cdc-wdm0] PIN operation successful
                                                                                
[/dev/cdc-wdm0] PIN info:
                 PIN state: 'locked'
                  PIN type: 'pin2'
        Remaining attempts: '3'
root@bpi-r3:~# mbim-network /dev/cdc-wdm0 start
Loading profile at /etc/mbim-network.conf...
    APN: internet.v6.telekom
    APN auth protocol: unset
    APN user: unset
    APN password: unset
    mbim-proxy: yes
Loading previous state from /tmp/mbim-network-state-cdc-wdm0...
    Previous Transaction ID: 10
error: no actions specified
Clearing state at /tmp/mbim-network-state-cdc-wdm0...
Querying subscriber ready status 'mbimcli -d /dev/cdc-wdm0 --query-subscriber-ready-status --no-close --device-open-proxy'...
[/dev/cdc-wdm0] Subscriber ready status retrieved: Ready state: 'initialized' Subscriber ID: '26201704168zzzz' SIM ICCID: '8949020000135585yyyy' Ready info: 'none' Telephone numbers: (1) '+491512025xxxx' [/dev/cdc-wdm0] Session not closed: 
TRID: '4'
Saving state at /tmp/mbim-network-state-cdc-wdm0... (TRID: 4)
Querying registration state 'mbimcli -d /dev/cdc-wdm0 --query-registration-state
 --no-open=4 --no-close --device-open-proxy'...
[/dev/cdc-wdm0] Registration status: Network error: 'unknown' Register state: 'deregistered' Register mode: 'automatic' Available data classes: 'unknown' Current cellular class: 'gsm' Provider ID: 'unknown' Provider name: 'unknown' Roaming
text: 'unknown' Registration flags: 'packet-service-automatic-attach' [/dev/cdc-wdm0] Session not closed: TRID: '6'
Saving state at /tmp/mbim-network-state-cdc-wdm0... (TRID: 6)
Attaching to packet service with 'mbimcli -d /dev/cdc-wdm0 --attach-packet-service --no-open=6 --no-close --device-open-proxy'...
error: operation failed: RadioPowerOff
Saving state at /tmp/mbim-network-state-cdc-wdm0... (TRID: 8)
Starting network with 'mbimcli -d /dev/cdc-wdm0 --connect=apn='internet.v6.telekom' --no-open=8 --no-close --device-open-proxy'...
error: operation failed: RadioPowerOff
Network start failed
[/dev/cdc-wdm0] Session not closed: TRID: '10'
Saving state at /tmp/mbim-network-state-cdc-wdm0... (TRID: 10)
root@bpi-r3:~#

change Mode

Caution this breaks functionality and i'm currently trying to fix it!

root@bpi-r3:~# qmicli -d /dev/cdc-wdm0 --device-open-mbim --dms-swi-get-usb-composition
[/dev/cdc-wdm0] Successfully retrieved USB compositions:
            USB composition 6: DM, NMEA, AT, QMI
        [*] USB composition 8: DM, NMEA, AT, MBIM
            USB composition 9: MBIM

root@bpi-r3:~# qmicli -d /dev/cdc-wdm0 --device-open-mbim --dms-swi-set-usb-composition 6

now no device is recognized by driver (no serial ttyUSBx too) and i saw in dmesg only this (also after cold-reset):

[    3.592655] usb 1-1.1: new high-speed USB device number 4 using xhci-mtk
[    3.823392] usb 1-1.1: config 1 has an invalid interface number: 8 but max is 3
[    3.830719] usb 1-1.1: config 1 has no interface number 1

i loaded all known modules:

root@bpi-r3:~# modprobe qmi_wwan
root@bpi-r3:~# modprobe qcserial
root@bpi-r3:~# modprobe cdc_mbim

with this i have got access to the AT-Interface:

lsusb:

Bus 001 Device 004: ID 413c:81c2 Dell Computer Corp. DW5811e Snapdragon™ X7 LTE

unlock ttyUSBx with option-module:

root@bpi-r3:~# modprobe option
[  229.747728] usbcore: registered new interface driver option
[  229.753429] usbserial: USB Serial support registered for GSM modem (1-port)

root@bpi-r3:~# echo 413c 81c2 >/sys/bus/usb-serial/drivers/option1/new_id
[  300.293186] option 1-1.1:1.0: GSM modem (1-port) converter detected
[  300.299755] usb 1-1.1: GSM modem (1-port) converter now attached to ttyUSB0
[  300.307011] option 1-1.1:1.2: GSM modem (1-port) converter detected
[  300.313657] usb 1-1.1: GSM modem (1-port) converter now attached to ttyUSB1
[  300.320968] option 1-1.1:1.3: GSM modem (1-port) converter detected
[  300.327741] usb 1-1.1: GSM modem (1-port) converter now attached to ttyUSB2
[  300.336533] option 1-1.1:1.8: GSM modem (1-port) converter detected
[  300.343262] usb 1-1.1: GSM modem (1-port) converter now attached to ttyUSB3

now only with “minicom -D /dev/ttyUSB2”. (commandmode with Ctrl+AA, because already via Minicom on the R3)

ATE1

OK

AT!ENTERCND="A710"

OK

AT!CUSTOM?

!CUSTOM:

             GPSENABLE          0x04

             GPSSEL             0x01

             IPV6ENABLE         0x01

             SIMLPM             0x01

             USBSERIALENABLE    0x01

             SINGLEAPNSWITCH    0x01


OK

AT!USBCOMP?

Config Index: 1

Config Type:  1 (Generic)

Interface bitmask: 0020010D (diag,nmea,modem,rmnet0,ubist) 


OK

AT!USBCOMP=?

!USBCOMP: 

AT!USBCOMP=<Config Index>,<Config Type>,<Interface bitmask>

  <Config Index>      - configuration index to which the composition applies, s


  <Config Type>       - 1:Generic, 2:USBIF-MBIM, 3:RNDIS

                        config type 2/3 should only be used for specific Sierra

                        customized VID/PID should use config type 1


  <Interface bitmask> - DIAG     - 0x00000001,

                        NMEA     - 0x00000004,

                        MODEM    - 0x00000008,

                        RMNET0   - 0x00000100,

                        RMNET1   - 0x00000400,

                        MBIM     - 0x00001000,

  e.g.

  10D  - diag, nmea, modem, rmnet interfaces enabled

  1009 - diag, modem, mbim interfaces enabled


  The default configuration is:

  at!usbcomp=1,1,10F


OK

can't set default-mode, but the following fixes it and go back to mbim-mode after a cold-coot (ttyUSB accessible via options-module too)

AT!USBCOMP=1,1,100D
OK
AT!RESET
OK
en/bpi-r3/lte.txt · Last modified: 2022/09/25 14:08 by frank