Unhandled exception in callback handler using Bluetooth

[Lloydy]

Hi, I'm trying to send data via Bluetooth from a mobile device to my wipy board, this has been working for a while, but upon updating to the latest firmware I now get the following error when writing a value to a characteristic

Unhandled exception in callback handler
TypeError: function takes 1 positional arguments but 2 were given

This is the version:

Pycom MicroPython 1.20.2.rc6 [v1.11-01f49f7] on 2020-02-28; WiPy with ESP32

This is the code:

bluetooth.init()
    bluetooth.set_advertisement(name="Client_Name", service_uuid=serUUID)
    bluetooth.callback(trigger=Bluetooth.CLIENT_CONNECTED | Bluetooth.CLIENT_DISCONNECTED, handler=conn_cb)
    bluetooth.advertise(True)
    srv = bluetooth.service(uuid=serUUID, isprimary=True, nbr_chars=1)
    chr1 = srv.characteristic(uuid=ssidUUID, properties=Bluetooth.PROP_READ | Bluetooth.PROP_WRITE, value='None')
    chr1.callback(trigger=Bluetooth.CHAR_WRITE_EVENT, handler=char1_cb)

And the callback is:

def char1_cb(chr):
    print(chr)

Thanks

Lloyd

[aasodisen]

@Lloydy Same in using GPY

[herr.frei]

@aasodisen Add a second argument, e.g.

def char1_cb(chr, arg1=None):
    print(chr)

This should work.

Best regards