Re: [PATCH] telit: sim status notification without polling

[Christopher Vogl <christopher.vogl@hale.at>]

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Hi Denis,

On 23/08/12 19:37, Denis Kenzior wrote:
> Hi Christopher,
>
>>> Also, one other thing I'm concerned about is the CFUN=4 usage when we
>>> try to set the modem offline. Your comments indicate that the Telit
>>> modem resets the SIM when we issue CFUN=4. Going from Online True ->
>>> False we don't actually want to reset the SIM. Does CFUN take an extra
>>> parameter to turn SIM reset off by any chance?
>>
>> Telit documentation says that +CFUN supports a second parameter which
>> should turn reset off.
>> AT+CFUN=? also returns +CFUN: (0,1,2,4,5),(0)
>> AT reference manual: "reset flag 0 - do not reset the ME before setting
>> it to <fun> functionality level"
>>
>> But the modem keeps returning +CME ERROR: 4 when I try it (no matter
>> which CFUN level).
>
> That is funny.  Maybe the modem does not support a true 'offline' or 
> 'airplane' mode.  In which case the driver might need to be modified 
> somewhat.
>
> This is something we will need to solve in the future.  If not fixed, 
> I'm guessing that going Online then Offline will reset the SIM and 
> cause all kinds of funny behavior.
>
>>
>> The modem behaves very strange sometimes. I kept getting timeouts when
>> setting AT+CFUN=4. I once tried it manually and it took 26 seconds until
>> I got an OK.
>> Currently it works fine again.
>>
>
> Is there a newer firmware available by any chance?
>

I'm currently using firmware version 08.01.107. Apparently there is a 
08.01.108 version. I contacted the Telit support and they said they are 
testing this version, so I don't know if it is available now. I hope we 
are getting an official Telit support with the possibility for updates 
soon - will know more on Tuesday.

Regards,
Christopher

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