[Interest] Bluetooth on Qt on Pi (for real this time)

[Shawn Rutledge]

> On 29 Jun 2018, at 08:27, Tomasz Siekierda <sierdzio at gmail.com> wrote:
> 
> On Thu, 28 Jun 2018 at 22:40, Jason H <jhihn at gmx.com> wrote:
> I've used bluetoothctl to pair to my mac, but when I try to get local adapters on the Pi from Qt, there are none:
> 
> log:
> Local Adapters:
> ASSERT: "!isEmpty()" in file /usr/include/arm-linux-gnueabihf/qt5/QtCore/qlist.h, line 294
> 
> 
> code: 
>         auto localAdapters = QBluetoothLocalDevice::allDevices();
>         qDebug() << "Local Adapters:";
>         for (const auto &adapter: localAdapters) {
>                 qDebug() << adapter.address().toString() << adapter.name(); // <<pairingStatus(adapter.address());
>         }
> 
>         bool result = listen(localAdapters.first().address());
> 
> Any ideas on what it takes to get it working on a Pi? When I run it on my mac, it is fine.
> 
> BT on Raspberry Pi is very unstable. I've tried to work with it 6 months ago and actually abandoned the project because it was practically unusable. However, I've noticed they have released a lot of software and firmware updates since then. So my first suggestion: upgrade Raspbian (if you are using it) to newest version.

Have they updated their Qt version yet?  Last time I tried Bluetooth on the Pi, a few months ago, they still had 5.7, which is ridiculous IMO.  I wanted to try BLE, so had to recompile Qt on the Pi.  And yeah, BT wasn’t stable either.