• bleak version: 0.6.1
• Python version:3.6.3
• Operating System: macOS 10.15.4
  Was connected to "lego control plus"

Description

inside of BleakClientCoreBluetooth.write_gatt_char
line:

success = await cbapp.central_manager_delegate.connected_peripheral_delegate.writeCharacteristic_value_type_(
            characteristic.obj,
            value,
            CBCharacteristicWriteWithResponse if response else CBCharacteristicWriteWithoutResponse
        )

where
CBCharacteristicWriteWithResponse equal 0
CBCharacteristicWriteWithoutResponse equal 1

and inside of writeCharacteristic_value_type_

        if response:
            await event.wait()

So when write_gatt_char called with response=False inside of writeCharacteristic_value_type_ it will wait forever.

It looks like doing this conversion value right on the call of writeValue_forCharacteristic_type_ will fix it.