NRFSniffer python tools: How to capture the connection phase

RE: NRFSniffer python tools: How to capture the connection phase

Hung Bui — Mon, 14 Feb 2022 09:32:03 GMT

Hi Vincent,

The sniffer_ble.py expects a command from Wireshark drop down menu (the handle_control_command()) to start tracking the device. It's not something you can input in the commandline arguments when calling python.

It's API from Wireshark that communicate to the python application directly. So I afraid the easiest way is still to modify nrf_sniffer_ble.py to add the command in, or you can write your own python code for that.

RE: NRFSniffer python tools: How to capture the connection phase

v.planat — Fri, 11 Feb 2022 15:37:17 GMT

Hi,

Thanks very much for your answer.

I'm very surprised that the capture is not possible on the connection ..?? Are you really sure that I have to develop this code, meaning that this sniffer_ble.py is only capable of sniffing ADV_IND ?? I'm not a deep expert in python but the code seems much extended and seems to cover this space also..

Are you aware of any other example of command line that are refering to this code ?

I'm a bit reluctant trying to recode something that may already work

I really thank you for your support

Regards

Vincent

RE: NRFSniffer python tools: How to capture the connection phase

Hung Bui — Fri, 11 Feb 2022 14:21:45 GMT

Hi Planat,

I don't think --device has been implemented in the nrf_sniffer_ble.py to actually follow the device.

The device to follow is handled in control_loop() -> handle_control_command->follow_device()

I don't have much experience with the nrf_sniffer_ble.py file, but I would suggest to have a look at the Sniffer API Guide.pdf doc and follow the documentation there to write your own python (instead of nrf_sniffer_ble.py) to run the sniffer, an example.py is provided in the doc folder.
You job is to modify that and then output to a file.