better connection handling in QML UI

[Dirk Hohndel]

> On Jul 17, 2017, at 12:20 PM, Jan Mulder <jlmulder at xs4all.nl> wrote:
> 
> On 17-07-17 20:56, Dirk Hohndel wrote:
>>> On Jul 17, 2017, at 11:38 AM, Dirk Hohndel <dirk at hohndel.org> wrote:
>>>> 
>>>> I have one paired DC, and it is detected correctly at start (and any restart). The new "connection" field is empty, and I can select 3 options (classic BT address, BLE BT address, and FTDI). The selected connection option is not preserved over sessions, and the connection option is empty again on a new start. So my "concern" is that I have to select the connection type again and again.
>>> 
>>> That's odd. It should pick the correct address, not leave it empty - why isn't it matching this correctly? Is this again an issue with us not recognizing the name correctly?
>> So I tried this three different ways, with one or more paired dive computers.
>> And in each case, as I tap on the download button, it picks one of the detected computers with corresponding vendor, product, and address.
>> I wonder if this is again an OSTC name issue that causes this to fail for you.
>> But I'd need to know what are the names that are found, what's shown on your download page, etc. in order to understand what's actually going wrong.
> 
> 3 files attached. All looks sane to me. The OSTC is only classic BT paired at this moment.

Yes, they look sane to me, and I now understand what's failing.
Let's see if I can also fix it :-)

> And don't worry about Qt 5.9.2, build from source. And, off topic, yes some BLE transfer is working (even without the paches from Alex).

Cool!

/D