[Users] SMS module modem diagnosis

[Bogdan-Andrei Iancu]

Hi Cristian,

the syscall "open" fails on the modem device:
     open(mdm->device, O_RDWR | O_NOCTTY );

it might be a permission problem (not sure) or a concurrent access on 
the device.

regards,
bogdan

Cristian Caprar wrote:

> How can I diagnose a problem in the SMS module when opening a modem?
>
> I see the following line in the log:
> DEBUG: modem_process: opening modem
>
> After about 5 minutes, I see the next one:
> ERROR:modem_process: cannot open modem Siemens_S45! Resource 
> temporarily unavailable
>
> All happens in libsms_modem.c, line 423, where open() is called. The 
> call blocks for about 5 minutes and afterwards I see the above error 
> in the log.
>
> I tried to connect to the modem via minicom (on /dev/ttyS0) and 
> everything is just fine.
>
>  
>
> Thanks,
>
> Cristian
>
>  
>
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