Hey,
I use a telit LE910C1-EU with mbim interface. This modem has support for
two sim slots and we want to use this feature with ModemManager (I am
using Version 1.19.0)
What I want to do is
* find out which slot is currently active
* switch active slot if possible
I am able to switch the slot using AT commands directly. Using qmicli
works as well. But I am not able to use mmcli to do so.
From looking at the code, it seems that using AT commands is not
implemented in the telit plugin and using qmi-over-mbim is not
implemented for the uim service. It seems to me that there is some code
for that in the mbim broadband modem, but I don't understand how that
can work, since the service QMI_SERVICE_UIM is not included in the list
of QMI service in the mbim implementation. I tried to include the
service in the list, but that caused modem manager to crash since the
modem is not a QMI modem (invalid cast)
So the question is how to implement that dual SIM support? To me, the
most promising seems to support the UIM service via qmi-over-mbim, but
it is not clear to me what the best way is to do so? Do you have some
guidance how to proceed?
I attach parts of the starting log ....
-----------------------------
ModemManager[17594]: <info> ModemManager (version 1.19.0) starting in
system bus...
ModemManager[17594]: opening device...
ModemManager[17594]: cannot connect to proxy: Could not connect:
Connection refused
ModemManager[17594]: spawning new mbim-proxy (try 1)...
ModemManager[17594]: [/dev/cdc-wdm0] Read max control message size from
descriptors file: 4096
ModemManager[17594]: <info> [cdc-wdm0/mbim] MBIM device is not QMI capable
ModemManager[17594]: [/dev/cdc-wdm0] closing device...
ModemManager[17594]: [/dev/cdc-wdm0] channel destroyed
ModemManager[17594]: <info> [base-manager] couldn't check support for
device
'/sys/devices/platform/ahb/ahb:apb/f8004000.mmc/mmc_host/mmc1/mmc1:0001/mmc1:0001:1':
not supported by any plugin
ModemManager[17594]: <info> [base-manager] couldn't check support for
device '/sys/devices/platform/ahb/ahb:apb/f802c000.ethernet': not
supported by any plugin
ModemManager[17594]: <info> [device
/sys/devices/platform/ahb/700000.ehci/usb1/1-2] creating modem with
plugin 'telit' and '5' ports
ModemManager[17594]: <warn> [plugin/telit] could not grab port ttyUSB3:
Cannot add port 'tty/ttyUSB3', unhandled port type
ModemManager[17594]: <warn> [plugin/telit] could not grab port ttyUSB0:
Cannot add port 'tty/ttyUSB0', unhandled port type
ModemManager[17594]: <info> [base-manager] modem for device
'/sys/devices/platform/ahb/700000.ehci/usb1/1-2' successfully created
ModemManager[17594]: opening device...
ModemManager[17594]: [/dev/cdc-wdm0] Read max control message size from
descriptors file: 4096
ModemManager[17594]: [/dev/cdc-wdm0] Opening device with flags
'version-info, proxy, mbim, expect-indications'...
ModemManager[17594]: [/dev/cdc-wdm0] created endpoint
ModemManager[17594]: [/dev/cdc-wdm0] creating MBIM device...
ModemManager[17594]: [/dev/cdc-wdm0] MBIM device created
ModemManager[17594]: [/dev/cdc-wdm0] opening MBIM device...
ModemManager[17594]: opening device...
ModemManager[17594]: [/dev/cdc-wdm0] Read max control message size from
descriptors file: 4096
ModemManager[17594]: [/dev/cdc-wdm0] MBIM device open
ModemManager[17594]: [/dev/cdc-wdm0] Checking version info (15 retries)...
ModemManager[17594]: [/dev/cdc-wdm0] QMI Device supports 33 services:
ModemManager[17594]: [/dev/cdc-wdm0] ctl (1.5)
ModemManager[17594]: [/dev/cdc-wdm0] wds (1.67)
ModemManager[17594]: [/dev/cdc-wdm0] dms (1.0)
ModemManager[17594]: [/dev/cdc-wdm0] nas (1.25)
ModemManager[17594]: [/dev/cdc-wdm0] qos (1.12)
ModemManager[17594]: [/dev/cdc-wdm0] wms (1.10)
ModemManager[17594]: [/dev/cdc-wdm0] auth (1.3)
ModemManager[17594]: [/dev/cdc-wdm0] at (1.2)
ModemManager[17594]: [/dev/cdc-wdm0] voice (2.1)
ModemManager[17594]: [/dev/cdc-wdm0] cat2 (2.24)
*ModemManager[17594]: [/dev/cdc-wdm0] uim (1.46)*
ModemManager[17594]: [/dev/cdc-wdm0] pbm (1.4)
ModemManager[17594]: [/dev/cdc-wdm0] test (1.0)
ModemManager[17594]: [/dev/cdc-wdm0] loc (2.0)
ModemManager[17594]: [/dev/cdc-wdm0] sar (1.0)
ModemManager[17594]: [/dev/cdc-wdm0] ims (1.0)
ModemManager[17594]: [/dev/cdc-wdm0] ts (1.0)
ModemManager[17594]: [/dev/cdc-wdm0] tmd (1.0)
ModemManager[17594]: [/dev/cdc-wdm0] wda (1.16)
ModemManager[17594]: [/dev/cdc-wdm0] csvt (1.1)
ModemManager[17594]: [/dev/cdc-wdm0] imsa (1.0)
ModemManager[17594]: [/dev/cdc-wdm0] coex (1.0)
ModemManager[17594]: [/dev/cdc-wdm0] pdc (1.0)
ModemManager[17594]: [/dev/cdc-wdm0] rfrpe (1.0)
ModemManager[17594]: [/dev/cdc-wdm0] dsd (1.0)
ModemManager[17594]: [/dev/cdc-wdm0] unknown [0x2d] (1.0)
ModemManager[17594]: [/dev/cdc-wdm0] unknown [0x30] (1.0)
ModemManager[17594]: [/dev/cdc-wdm0] unknown [0x32] (1.0)
ModemManager[17594]: [/dev/cdc-wdm0] unknown [0x36] (1.0)
ModemManager[17594]: [/dev/cdc-wdm0] fota (1.0)
ModemManager[17594]: [/dev/cdc-wdm0] gms (1.0)
ModemManager[17594]: [/dev/cdc-wdm0] unknown [0xeb] (1.0)
ModemManager[17594]: [/dev/cdc-wdm0] unknown [0xed] (1.0)
ModemManager[17594]: [/dev/cdc-wdm0] Enabling QMI indications via MBIM...
ModemManager[17594]: [/dev/cdc-wdm0] enabled QMI indications via MBIM
ModemManager[17594]: <info> [modem0/cdc-wdm0/mbim] MBIM device is QMI
capable
ModemManager[17594]: [/dev/cdc-wdm0] Allocating new client ID...
ModemManager[17594]: [/dev/cdc-wdm0] Registered 'dms' (version 1.0)
client with ID '1'
ModemManager[17594]: [/dev/cdc-wdm0] Allocating new client ID...
ModemManager[17594]: [/dev/cdc-wdm0] Registered 'nas' (version 1.25)
client with ID '3'
ModemManager[17594]: [/dev/cdc-wdm0] Allocating new client ID...
ModemManager[17594]: [/dev/cdc-wdm0] Registered 'loc' (version 2.0)
client with ID '1'
ModemManager[17594]: [/dev/cdc-wdm0] Allocating new client ID...
ModemManager[17594]: [/dev/cdc-wdm0] Registered 'pdc' (version 1.0)
client with ID '1'
ModemManager[17594]: <info> [modem0] QMI-based capability and mode
switching support enabled
*ModemManager[17594]: <warn> [modem0] couldn't query SIM slots:
NoDeviceSupport*
ModemManager[17594]: <warn> [modem0/sim0] couldn't load EID: Failure
ModemManager[17594]: <warn> [modem0/sim0] couldn't load list of
emergency numbers: uninitialized emergency numbers list
ModemManager[17594]: <warn> [modem0] couldn't load initial EPS bearer
settings: LTE attach status info is unsupported
ModemManager[17594]: <info> [modem0] state changed (unknown -> disabled)
ModemManager[17594]: <info> [modem0] state changed (disabled -> enabling)
ModemManager[17594]: <info> [modem0] power state updated: on
ModemManager[17594]: <info> [modem0] 3GPP registration state changed
(unknown -> idle)
ModemManager[17594]: <info> [modem0] state changed (enabling -> enabled)
--------------------------------
Thank you and best regards,
--
Best regards / Mit freundlichen Grüßen / Salutations distinguées
Ulrich Mohr
SEMEX-EngCon GmbH
Carl-Merz-Strass 26
76275 Ettlingen
Phone: +49 (0) 7243 5143596
email:u.m...@semex-engcon.com
___________________________________________
Executive board: A. Stiegler, H.-J. Nitzpon
Commercial register: Mannheim, HRB 718881
Company domicile: Ettlingen
