My Python/Bleak/BleakClient code calls write_gatt_char with my custom UUID and a string of bytes. This works fine with Bleak version 0.19.0 but fails with version 0.21.1 with the error message: "Could not write value b'my_bytes' to characteristic 0014: Protocol Error 0x0E: Unlikely Error" I've googled all over trying to find a mention of this Protocol Error and what it means - but no luck. I'm running on Windows 11 Pro Version 10.0.22621 Build 22621 with Python 3.9.16
I did the Bleak update because the older version has some instabilities with Windows that are supposed to be corrected in the later version.
Anyone have any ideas about how to debug this? Maybe the Bleak client was validated on a different version of Python? Maybe I need to update the Windows BLE driver?