Low-Level BLE Sniffing

[silvia]

What is the best approach to listening to non-connectable, undirected BLE advertisements?

On a raspberry pi 3 I have used a combination of bluetoothctl and btmon to get a low-level view of advertisements coming through. Does this functionality exist for micropython?



(keywords: 0x03 - ADV_NONCONN_IND - non-connectable undirected advertising)

[jimmo]

What is the best approach to listening to non-connectable, undirected BLE advertisements?

Do you see them in a scan? I would have thought you would (as adv_type = 3). (If you see them in bluetoothctl then you should see them from MicroPython).

http://docs.micropython.org/en/latest/l ... E.gap_scan

This works on PYBD and ESP32 currently. nRF in progress.

[robertwatts]

What is the best approach to listening to non-connectable, undirected BLE advertisements?

Do you see them in a scan? I would have thought you would (as adv_type = 3). (If you see them in bluetoothctl then you should see them from MicroPython).

http://docs.micropython.org/en/latest/l ... E.gap_scan

This works on PYBD and ESP32 currently. nRF in progress.

Thank you so much! Lot for me to read to start learning.