Re: HE910 + ofono: "Activating context failed with error: Unknown error type"

[Marko Sulejic <marko.sulejic@hale.at>]

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Am 2015-06-30 um 07:54 schrieb Marko Sulejic:
> Am 2015-06-26 um 04:20 schrieb Denis Kenzior:
>> Hi Marko,
>>
>> >
>>> _And the fail log _(on reconnect):
>>>
>>> Jun 29 15:19:34 mx31tt01 daemon.debug ofonod[657]:
>>> gprs-context.c(240):at_gprs_activate_primary() cid 1
>>> Jun 29 15:19:34 mx31tt01 daemon.info ofonod[657]: Modem: >
>>> AT+CGDCONT=1,"IP","web.one.at"\r
>>
>> Your modem is not responding to this AT command.  There's not much 
>> that can be done on the oFono side.  You need to figure out why the 
>> modem is acting this way.
>>
>
> Hi Denis,
>
> thank you for the answer. If I can figure out the error,
> and can solve the problem, I will let you know.
>

Hi Denis,

we figured out the problem:

At the end of a PPP connection, garbage was passed in to the AT command 
parser on the modem chat.
This garbage contained a doublequote, which switched the AT syntax 
parser into string mode.
However, because no second doublequote arrived, it stayed in this mode, 
and kept returning UNSURE result.

I think this is an major issue that should be fixed in oFono.
The syntax parser has to be extended to handle such cases.

Regards,
Marko