Thanks Olli, I didn't realise that Windows requires the device to be manually paired as the other OSes I'm developing for don't seem to require this for BLE.
It turns out that when paired using the Windows 10 Settings app, the device I'm using gets disconnected a few seconds after pairing and it then can be seen, but not connected to, by other apps but if paired using the dialog that a UWP app shows (or the 'Pair' function in Microsoft's Bluetooth LE explorer app) then it stays connected and win32 apps can see it and connect to it. This gives me a temporary workaround until the connection issues for my target device are fixed. I've reported this to the device manufacturer but also reporting it here in case there are other devices that have a similar problem. Glenn On 25/07/18 17:51, Oliver Wolff wrote: > Hi Glenn, > > I am not sure I understand your situation. The Windows BT implementation > needs a > paired device in order to work. You said, that you paired the device in the > beginning. Have you paired the device and it does not work for you? If this is > the case please create a bug report which also states your Windows version and > the device you are trying to connect to. You can assign the bug report to me. > > Olli > > > On 25/07/2018 05:37, Glenn Ramsey wrote: >> Hi, >> >> I'm trying to get Qt(5.11.1) communicating with a BLE device on Windows 10 >> using >> the win32/WinRT backend. >> >> Using the lowenergyscanner example it can 'see' the device, only after it has >> been manually paired, but hangs when querying the services. The Microsoft >> BLE >> Explorer app from the Microsoft Store is able to 'see' all of the services >> and >> characteristics of the device and the UWP version of lowenergyscanner also >> seems >> to work correctly. Also the same version (in 5.11.1) works correctly on OSX. >> >> In the debugger I can see that the hang occurs somewhere in >> QLowEnergyControllerPrivateWinRT::connectToDevice(). >> >> This bug [1] suggests this might be because windows needs to pair with the >> device, although I'm not seeing any indication of this in the UI when I run >> lowenergyscanner but I don't see the the device listed until I manually pair >> it. >> >> Is there some step that I have missed, or should I file a bug report about >> this? >> >> Glenn >> >> [1] https://bugreports.qt.io/browse/QTBUG-58660 _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
