cinterion: modification to fetching unlock retries

[Colin Helliwell]

> On 09 October 2017 at 10:30 Colin Helliwell wrote:
> 
> 
> > On 09 October 2017 at 10:20 Aleksander Morgado wrote:
> > > > Some Cinterion modems support AT^SPIC to fetch the 'unlock retries', but
> > > > some don't. Another method possibly available is to used AT+CSIM (as per
> > > > Telit plugin).
> > > > This aims to allow either method to be tried - if the first step of the
> > > > first method fails (e.g. SPIC not supported), then try again using the
> > > > alternate.
> > > > I did wonder about a single array of commands but that would have meant
> > > > hard-coding in a 'goto' to get from A to B, hence prone to future changes
> > > > breaking it.
> > > > 
> > > > Bit more checking required yet, but at first glance it looks like basically
> > > > works.
> > > > I'm not sending this as a patch here, but just to get views on (or
> > > > objections to!) the general approach.
> > > 
> > > Hi, I just wondered if there was any appetite for re-visiting this issue. The latest 'GTask' rework to the plugin means I'll need to redo accordingly the patch I've been using - but thought I'd enquire before embarking on that.
> > You're talking about the parallel enables issue, or using AT^SPIC to
> > fetch unlock retries?
> > What patch are you currently using, could you share it somewhere?
> 
> Sorry - pasted the wrong URL! See instead: 
> https://lists.freedesktop.org/archives/modemmanager-devel/2017-April/004485.html
> I didn't get to a point where I thought my patch would be mainstream-acceptable (it just 'works for me'), but I can post in entirety if necessary. It's essentially as per my original post in the thread.


I've modified my patch for a later 'gtask oriented' Master version of MM (66dce6dacc440d8bfe4270562ef5a840c87e5a04 - Dec 5), which I'd like to re-offer for review/comment? (and inclusion?)


As I write, it's almost working except two of the queries are sometimes returning "reference data not found" errors:
AT+CSIM=10,"0020000100"  -> 63C3
AT+CSIM=10,"002C000100"  -> 63CA
AT+CSIM=10,"0020008100"  -> 6A88
AT+CSIM=10,"002C008100"  -> 6A88

It seems to be some sort of timing issue (on the Cinterion EHS5) - sometimes I get all four responses successfully, sometimes one/other/both of the last two fail.
I'll try to seek out any telling differences in the logs, but any thoughts as to what sequence/timing might cause this in the modem....? (varying registration time? SIM not fully initialized?)