Details
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Bug
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Resolution: Cannot Reproduce
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Not Evaluated
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None
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6.2.1, 6.5.2
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None
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PySide6.2.1, Pycharm IDE
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macOS
Description
I observe the following issues while evaluating the BLE connectivity subsystem of Qt6 (through PySide6) on MacOS:
- The BLE discovery procedure reports two instances of my BLE device: One with zero mac address i.e. 00:00:00:00:00:00 and another one with valid/non-zero mac address; Which is unexpected. i.e. On Windows; The same code can discover only one instance of this BLE device.
- Trying to connect to the non-zero mac address; I was not able to establish the connection.
- I tried to upgrade PySide6.2.1 to PySide6.5.2 but without any luck (i.e. same issues encountered again).
- In order to understand these issues- the following experiments were performed:
- A very basic swift-based code was written on MacOS to scan and connect to BLE devices and the code was very stable. So I started to have preliminary conclusions that it might be a Qt6 issue.
- Bleak library has also been evaluated (python-based library of BLE connectivity). and noticed that it is quite stable compared to PySide6/Qt6 in this regard.
- It seems that the common factor between the swift code and Bleak-based code is that they both use CoreBluetooth; while Qt6 utilizes IOBluetooth.
Here is what I see when I try to connect to my bLE device ("LE-SIMULATOR")?
2023-09-12 22:10:47.623 Python[47148:2960237] -[IOBluetoothDeviceInquiry initWithDelegate:] - 0x600000881200 New Bluetooth low energy device was discovered: LE-SIMULATOR qt.bluetooth.darwin: IOKit error code: 1 qt.bluetooth.darwin: IOKit error code: 1 qt.bluetooth.darwin: IOKit error code: 1 qt.bluetooth.darwin: IOKit error code: 1 qt.bluetooth.darwin: Manually interrupting IOBluetoothDeviceInquiry New Bluetooth low energy device was discovered: New Bluetooth low energy device was discovered: New Bluetooth low energy device was discovered: Mi Smart Band 6 New Bluetooth low energy device was discovered: LE-SIMULATOR New BLE device was found: LE-SIMULATOR 28:C6:3F:A3:E2:41 New BLE device was found: 00:00:00:00:00:00 New BLE device was found: 00:00:00:00:00:00 New BLE device was found: Mi Smart Band 6 00:00:00:00:00:00 New BLE device was found: LE-SIMULATOR 00:00:00:00:00:00 User wants to connect to device: 28:C6:3F:A3:E2:41 An error has occurred while trying to connect to BLE device. Error is : PySide6.QtBluetooth.QLowEnergyController.Error.UnknownRemoteDeviceError User wants to connect to device: 00:00:00:00:00:00 QLowEnergyController.ControllerState changed. new state is PySide6.QtBluetooth.QLowEnergyController.ControllerState.ConnectingState User wants to connect to device: 00:00:00:00:00:00 QLowEnergyController.ControllerState changed. new state is PySide6.QtBluetooth.QLowEnergyController.ControllerState.ClosingState QLowEnergyController.ControllerState changed. new state is PySide6.QtBluetooth.QLowEnergyController.ControllerState.UnconnectedState QLowEnergyController.ControllerState changed. new state is PySide6.QtBluetooth.QLowEnergyController.ControllerState.ConnectingState SDK disconnected from "00:00:00:00:00:00" 2023-09-12 22:11:53.139 Python[47148:2960237] -[IOBluetoothDeviceInquiry dealloc] - 0x0 Process finished with exit code 0
Do these issues imply that BLE support on macOS is broken?
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