MacOs BLE "unsupported descriptor" and "CBPeripheralManager can only accept this command while in the powered on state"

[davidesalvetti]

Hi,

I'm developing an application for MacOs using Qt 5.15.2 clang 64bit on a Mac mini with macOS Big Sur 11.1.

I'm trying to run the Heart Rate Server Example but I'm having some problem. When I run the application with the debugger I get the following application output:

2021-07-22 16:22:03.774769+0200 heartrate-server[43797:13434312] [qt.bluetooth.osx] unsupported descriptor "{00002902-0000-1000-8000-00805f9b34fb}"
2021-07-22 16:22:03.775480+0200 heartrate-server[43797:13434385] [CoreBluetooth] WARNING: <CBPeripheralManager: 0x100a17a80> has no restore identifier but the delegate implements the peripheralManager:willRestoreState: method. Restoring will not be supported
2021-07-22 16:22:04.831350+0200 heartrate-server[43797:13434385] [CoreBluetooth] API MISUSE: <CBPeripheralManager: 0x100a17a80> can only accept this command while in the powered on state

What should I do to fix the unsupported descriptor error? And what should I do to remove the "can only accept this command while in the powered on state"? I found that the problem for this second sentence is that I'm calling startAdvertising to early, I should wait that the powered state is actually on, but I did not find a way to wait for this state at the moment. Does anybody have an idea?

P.s: I set the "Privacy - Bluetooth Always Usage Description" into the Info.plist file.

Thanks in advance.