How can I create modem object when in "failed" state?

[Ido Dotan]

Understood. In my case, I don't see any change in the modem state, and no
other modem is created.
Should I just assume SIM hotplug is not supported (and therefore, as I
understand it, I have to reset the modem to see an actual change)?
I use Sierra modem.

Thanks again

On Fri, Nov 22, 2019 at 12:04 PM Aleksander Morgado <
aleksander at aleksander.es> wrote:

> >
> > Hi again, I found my mistake. The modem is indeed created just like it
> should, even when in "failed" state. Sorry for that.
> > There's something else I'd like to understand, also in the matter of
> working with sims -
> > I couldn't find any signal which can tell me that a new sim inserted in
> a modem which was simless at first. Is there something like this that I
> miss?
> >
>
> SIM hotplug management is not available in all modems, only in some of
> them (e.g. Telit, all MBIM modems...) and also please note that the
> SIM detection lines should be properly wired in the hardware for that
> to work.
>
> When there is no SIM and a new SIM is inserted, and assuming hotplug
> is supported properly, what you will see is the modem object in failed
> state going away, and a new modem object will appear that is no longer
> in failed state. i.e. there is no signal reporting "now a sim is
> available"; instead the full modem object is recreated.
>
>
> --
> Aleksander
> https://aleksander.es
>


-- 

*Ido Dotan, software developer*



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