Huawei E3276 problem

[Olof Ermis]

Hi!

Have added the patch now. Attached is a new syslog.

The only difference now is that the /dev/ttyUSB1 is not created, so
according to what you said Björn that looks like a good thing. I can
send

 echo -e AT^NDISDUP=1,1,"telia.online.se" > /dev/ttyUSB0

and /dev/ttyUSB0 I get the command echo'ed back but no other feedback.

lsmod still lists

option                 29746  0
usb_wwan               14830  1 option
usbserial              27212  2 option,usb_wwan

so I can't see any cdc-ncm driver loaded.

No wwanX device (when I do ifconfig).

Any additional debug or configuration that I should do here?

Cheers
Olof

2012/11/12 Bjørn Mork <bjorn at mork.no>:
> Olof Ermis <olof.ermis at gmail.com> writes:
>
>> Hi!
>>
>> Okay, back to trying now. Attached is the syslog when I connect the
>> dongle. I have added the
>>
>> echo "12d1 1506" > /sys/bus/usb-serial/drivers/option1/new_id
>>
>> lsmod shows:
>>
>> option                 29746  0
>> usb_wwan               14830  1 option
>> usbserial              27212  2 option,usb_wwan
>>
>> I have not yet applied to cdc_ncm patch. What is the minium kernel
>> version for the patch and get this to work? Right now I run on
>> 3.7.0-rc4, but 3.6 (or even 3.2.x) would be nice due to my Raspbian
>> dist need.
>
> Should work fine on both 3.7.0-rc4 and 3.6.x
>
>> I can only connect / send-commands to /dev/ttyUSB0. /dev/ttyUSB1 is
>> completely dead.
>
> /dev/ttyUSB1 should not be there.  It is really the network interface,
> which the option just steals.  This is expected when you use the new_id
> method and no driver has bound to this interface before.
>
> This will be fixed when the drivers handle this device.
>
>
>> On /dev/ttyUSB0 (using cat /dev/ttyUSB0) I get these status reports
>> continuously, maybe this is the PCUI connection strength status:
>>
>> ^RSSI:29
>>
>> ^RSSI:29
>>
>> ^RSSI:29
>>
>> I can send
>>
>> echo -e ATI > /dev/ttyUSB0 and then I get
>>
>> Manufacturer: huawei
>> Model: E3276
>> Revision: 21.192.03.01.07
>> IMEI: 863781010146687
>> +GCAP: +CGSM,+DS,+ES
>>
>> When i send
>>
>>  echo -e AT^NDISDUP=1,1,"telia.online.se" > /dev/ttyUSB0
>>
>> I have got various responses, (ERROR, +CME ERROR: 50) but sometimes
>> (?) I get an echo back
>>
>> AT^NDISDUP=1,1,telia.online.se
>>
>> Led is flashing blue (I have removed PIN-verification).
>
> Looks good.
>
>> So:
>>
>> - Is the AT-command working as it should and the only thing that
>> remains now is the cdc_ncm-patch (see question on version)?
>
> Looks like it.
>
>> - Is /dev/ttyUSB0 then right port you think?
>
> Yes.  That is the only serial port exposed by the modem, and it is
> intended for device management.
>
>> - What device will be exposed when this work? As a device and/or
>> network interface (I only have eth0 and lo right now and no
>> /dev/cdc-something)? Any additional configuration needed to get that
>> to work?
>
> You will have a wwanX network interface.  The cdc_ncm driver will handle
> that.
>
>
> Bjørn
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