I'm using a Pyboad SF2 and nightly build as of
MicroPython v1.23.0-preview.90.ged15b3c6c on 2024-02-06; PYBD-SF2W with STM32F722IEK

When trying the bonding example:
https://github.com/micropython/micropython/blob/master/examples/bluetooth/ble_bonding_peripheral.py

I got the following response:

no secrets available
get secret: 2 0 None
get secret: 10 0 b'irk'
set secret: (10, b'irk') b'\xdc$W\xae\xf1I\xb9\xee\xc0\x9f\xc7\xed,\x82\t\x94'
Traceback (most recent call last):
  File "<stdin>", line 199, in <module>
  File "<stdin>", line 184, in demo
  File "<stdin>", line 81, in __init__
  File "<stdin>", line 158, in _advertise
OSError: -513

the problem seems to be related to the ble.config's addr_mode. If I uncomment the call here:
https://github.com/micropython/micropython/blob/master/examples/bluetooth/ble_bonding_peripheral.py#L75
and here:
https://github.com/micropython/micropython/blob/master/examples/bluetooth/ble_bonding_peripheral.py#L157
it doesn't throw the error.

I understand that the ble bonding is still a work in progress demo. However I wanted to have a go on implementing bonding support for the pico_w. , and for this I thought I'd first start with a working example from a supported platform (even if it's from nimble - so another ble stack than on the pico_w).

Also.. is addr_mode set to 2 required for ble bonding?

Thanks for hints and clarifications!