QUECTEL EC20/EC21. Several drivers supported, which one is better to use?

Wed Sep 7 13:33:54 UTC 2016

Maybe I was wrong. I am trying now with the last versions but it is
still not working:

ModemManager 1.6.0
libqmi-1.16.0-r0.4.cortexa9hf_vfp_neon

The problem is still reproducible:

ModemManager[995]: <info>  ModemManager (version 1.6.0) starting in
system bus...
ModemManager[995]: [/dev/cdc-wdm0] Opening device with flags
'version-info, proxy'...
ModemManager[995]: cannot connect to proxy: Could not connect:
Connection refused
ModemManager[995]: spawning new qmi-proxy (try 1)...
ModemManager[995]: [/dev/cdc-wdm0] Checking version info (10 retries)...
ModemManager[995]: [/dev/cdc-wdm0] QMI Device supports 25 services:
ModemManager[995]: [/dev/cdc-wdm0]    ctl (1.5)
ModemManager[995]: [/dev/cdc-wdm0]    wds (1.67)
ModemManager[995]: [/dev/cdc-wdm0]    dms (1.0)
ModemManager[995]: [/dev/cdc-wdm0]    nas (1.25)
ModemManager[995]: [/dev/cdc-wdm0]    qos (1.12)
ModemManager[995]: [/dev/cdc-wdm0]    wms (1.10)
ModemManager[995]: [/dev/cdc-wdm0]    auth (1.3)
ModemManager[995]: [/dev/cdc-wdm0]    at (1.2)
ModemManager[995]: [/dev/cdc-wdm0]    voice (2.1)
ModemManager[995]: [/dev/cdc-wdm0]    cat2 (2.24)
ModemManager[995]: [/dev/cdc-wdm0]    uim (1.46)
ModemManager[995]: [/dev/cdc-wdm0]    pbm (1.4)
ModemManager[995]: [/dev/cdc-wdm0]    test (1.0)
ModemManager[995]: [/dev/cdc-wdm0]    loc (2.0)
ModemManager[995]: [/dev/cdc-wdm0]    sar (1.0)
ModemManager[995]: [/dev/cdc-wdm0]    ts (1.0)
ModemManager[995]: [/dev/cdc-wdm0]    tmd (1.0)
ModemManager[995]: [/dev/cdc-wdm0]    wda (1.16)
ModemManager[995]: [/dev/cdc-wdm0]    csvt (1.1)
ModemManager[995]: [/dev/cdc-wdm0]    coex (1.0)
ModemManager[995]: [/dev/cdc-wdm0]    pdc (1.0)
ModemManager[995]: [/dev/cdc-wdm0]    rfrpe (1.0)
ModemManager[995]: [/dev/cdc-wdm0]    dsd (1.0)
ModemManager[995]: [/dev/cdc-wdm0]    unknown [0x30] (1.0)
ModemManager[995]: [/dev/cdc-wdm0]    unknown [0x36] (1.0)
ModemManager[995]: <info>  Creating modem with plugin 'Generic' and '2' ports
ModemManager[995]: <info>  Modem for device at
'/sys/devices/soc0/soc.0/2100000.aips-bus/2184200.usb/ci_hdrc.1/usb1/1-1/1-1.3'
successfully created
ModemManager[995]: [/dev/cdc-wdm0] Opening device with flags
'version-info, proxy'...
ModemManager[995]: [/dev/cdc-wdm0] Checking version info (10 retries)...
ModemManager[995]: [/dev/cdc-wdm0] QMI Device supports 25 services:
ModemManager[995]: [/dev/cdc-wdm0]    ctl (1.5)
ModemManager[995]: [/dev/cdc-wdm0]    wds (1.67)
ModemManager[995]: [/dev/cdc-wdm0]    dms (1.0)
ModemManager[995]: [/dev/cdc-wdm0]    nas (1.25)
ModemManager[995]: [/dev/cdc-wdm0]    qos (1.12)
ModemManager[995]: [/dev/cdc-wdm0]    wms (1.10)
ModemManager[995]: [/dev/cdc-wdm0]    auth (1.3)
ModemManager[995]: [/dev/cdc-wdm0]    at (1.2)
ModemManager[995]: [/dev/cdc-wdm0]    voice (2.1)
ModemManager[995]: [/dev/cdc-wdm0]    cat2 (2.24)
ModemManager[995]: [/dev/cdc-wdm0]    uim (1.46)
ModemManager[995]: [/dev/cdc-wdm0]    pbm (1.4)
ModemManager[995]: [/dev/cdc-wdm0]    test (1.0)
ModemManager[995]: [/dev/cdc-wdm0]    loc (2.0)
ModemManager[995]: [/dev/cdc-wdm0]    sar (1.0)
ModemManager[995]: [/dev/cdc-wdm0]    ts (1.0)
ModemManager[995]: [/dev/cdc-wdm0]    tmd (1.0)
ModemManager[995]: [/dev/cdc-wdm0]    wda (1.16)
ModemManager[995]: [/dev/cdc-wdm0]    csvt (1.1)
ModemManager[995]: [/dev/cdc-wdm0]    coex (1.0)
ModemManager[995]: [/dev/cdc-wdm0]    pdc (1.0)
ModemManager[995]: [/dev/cdc-wdm0]    rfrpe (1.0)
ModemManager[995]: [/dev/cdc-wdm0]    dsd (1.0)
ModemManager[995]: [/dev/cdc-wdm0]    unknown [0x30] (1.0)
ModemManager[995]: [/dev/cdc-wdm0]    unknown [0x36] (1.0)
ModemManager[995]: [/dev/cdc-wdm0] Reading expected data format from:
/sys/class/net/wwan0/qmi/raw_ip
ModemManager[995]: [/dev/cdc-wdm0] Opening device with flags
'version-info, net-802-3, net-no-qos-header, proxy'...
ModemManager[995]: [/dev/cdc-wdm0] Checking version info (10 retries)...
ModemManager[995]: [/dev/cdc-wdm0] QMI Device supports 25 services:
ModemManager[995]: [/dev/cdc-wdm0]    ctl (1.5)
ModemManager[995]: [/dev/cdc-wdm0]    wds (1.67)
ModemManager[995]: [/dev/cdc-wdm0]    dms (1.0)
ModemManager[995]: [/dev/cdc-wdm0]    nas (1.25)
ModemManager[995]: [/dev/cdc-wdm0]    qos (1.12)
ModemManager[995]: [/dev/cdc-wdm0]    wms (1.10)
ModemManager[995]: [/dev/cdc-wdm0]    auth (1.3)
ModemManager[995]: [/dev/cdc-wdm0]    at (1.2)
ModemManager[995]: [/dev/cdc-wdm0]    voice (2.1)
ModemManager[995]: [/dev/cdc-wdm0]    cat2 (2.24)
ModemManager[995]: [/dev/cdc-wdm0]    uim (1.46)
ModemManager[995]: [/dev/cdc-wdm0]    pbm (1.4)
ModemManager[995]: [/dev/cdc-wdm0]    test (1.0)
ModemManager[995]: [/dev/cdc-wdm0]    loc (2.0)
ModemManager[995]: [/dev/cdc-wdm0]    sar (1.0)
ModemManager[995]: [/dev/cdc-wdm0]    ts (1.0)
ModemManager[995]: [/dev/cdc-wdm0]    tmd (1.0)
ModemManager[995]: [/dev/cdc-wdm0]    wda (1.16)
ModemManager[995]: [/dev/cdc-wdm0]    csvt (1.1)
ModemManager[995]: [/dev/cdc-wdm0]    coex (1.0)
ModemManager[995]: [/dev/cdc-wdm0]    pdc (1.0)
ModemManager[995]: [/dev/cdc-wdm0]    rfrpe (1.0)
ModemManager[995]: [/dev/cdc-wdm0]    dsd (1.0)
ModemManager[995]: [/dev/cdc-wdm0]    unknown [0x30] (1.0)
ModemManager[995]: [/dev/cdc-wdm0]    unknown [0x36] (1.0)
ModemManager[995]: [/dev/cdc-wdm0] Setting network port data format...
ModemManager[995]: [/dev/cdc-wdm0] Network port data format operation finished
ModemManager[995]: [/dev/cdc-wdm0] Allocating new client ID...
ModemManager[995]: [/dev/cdc-wdm0] Registered 'dms' (version 1.0)
client with ID '2'
ModemManager[995]: [/dev/cdc-wdm0] Allocating new client ID...
ModemManager[995]: [/dev/cdc-wdm0] Registered 'nas' (version 1.25)
client with ID '3'
ModemManager[995]: [/dev/cdc-wdm0] Allocating new client ID...
ModemManager[995]: [/dev/cdc-wdm0] Registered 'wms' (version 1.10)
client with ID '1'
ModemManager[995]: [/dev/cdc-wdm0] Allocating new client ID...
ModemManager[995]: [/dev/cdc-wdm0] Registered 'uim' (version 1.46)
client with ID '1'
ModemManager[995]: <warn>  couldn't load Supported Bands: 'QMI
operation failed: Cannot send message: QMI service 'dms' version '1.3'
required, got version '1.0''
ModemManager[995]: <warn>  couldn't load Power State: 'QMI operation
failed: Cannot send message: QMI service 'dms' version '1.1' required,
got version '1.0''
ModemManager[995]: <warn>  Modem couldn't be initialized: Couldn't
check unlock status: Couldn't get SIM lock status after 6 retries
ModemManager[995]: <info>  Modem: state changed (unknown -> failed)

The firmware on the modem is pretty new:

  Hardware |   manufacturer: 'QUALCOMM INCORPORATED'
           |          model: '0'
           |       revision: 'EC21EFAR02A02M4G  1  [Mar 21 2016 11:00:00]'
           |      supported: 'gsm-umts
           |                  lte
           |                  gsm-umts, lte'
           |        current: 'gsm-umts, lte'
           |   equipment id: '861108030008592'

Could you provide any help?

Thanks

On Wed, Sep 7, 2016 at 11:31 AM, José <Joseddg92 at gmail.com> wrote:
> Hi Thomas,
>
> thanks for the advice! The EC20 is workign fine. For the EC21, I get
> the following error:
>
> 'QMI operation failed: Cannot send message: QMI service 'dms' version
> '1.1' required, got version '1.0''
>
> I suspect that can be fixed but just upgrading ModemManager or libqmi
> (or maybe both). Is that correct?
>
> On Tue, Sep 6, 2016 at 9:51 PM, Thomas Schäfer <tschaefer at t-online.de> wrote:
>> Am Dienstag, 6. September 2016, 17:57:45 schrieb José:
>>> Hi,
>>>
>>> I am planning to test ModemManager with QUECTEL EC20 and EC21 cellular
>>> modems. These modems support the following drivers:
>>> * USB Serial (option.c)
>>> * CDC ACM
>>> * GobiNet
>>> * QMI WWAN
>>>
>>> What is the best approach for trying to use ModemManager?
>>
>> QMI WWAN, option.c
>>
>>
>>> Should I
>>> enable all drivers?
>>
>> No.
>>
>>
>>>
>>> Could you recommend which one of those to enable? Thanks
>>
>> https://sigquit.wordpress.com/2014/06/11/qmiwwan-or-gobinet/
>>
>>
>>
>> I think this blog is still valid.
>>
>>
>> Thomas