nRF Sniffer for 802.15.4 doesn't appear on Wireshark interface

[Md Mazedul Islam Khan]

I am struggling to see nRF Sniffer for 802.15.4 as an interface in the Wireshark interface list under the startup welcome screen. I am using nRF62840-Dongle and flashed it by utilizing the nrf802154_sniffer_dongle.hex available under the GitHub nRF-Sniffer-for-802.15.4 repository. I didn't find a specific binary for nRF62840-Dongle device there.

• Since I flashed the nRF62840-Dongle device using a mismatched binary nrf802154_sniffer_dongle.hex, is it the main cause of the issue? If so, where do I get the correct binary for the nRF62840-Dongle device?

I have Python 3 installation with Homebrew including Pip 3. I have listed the relevant installation path in the following:

• which python: python not found
• which pip: /usr/local/bin/pip
• which python3: /usr/local/bin/python3
• which pip3: /usr/local/bin/pip3

I installed pyserial using pip3 install pyserial. I copied the nrf802154_sniffer.py file under the ~/.config/wireshark/extcap location which is a Personal Extcap path.

When running the python3 nrf802154_sniffer.py --extcap-interfaces command, it outputs the following valid confirmation:

extcap {version=0.7.2}{help=https://github.com/NordicSemiconductor/nRF-Sniffer-for-802.15.4}{display=nRF Sniffer for 802.15.4}
interface {value=/dev/cu.usbmodemF1BD057D01BB1}{display=nRF Sniffer for 802.15.4}
control {number=6}{type=button}{role=logger}{display=Log}{tooltip=Show capture log}

So, what am I missing? Why nRF Sniffer for 802.15.4 interface isn't appearing on the Wireshark Custom Interface list?

[JANC]

fir wireshark -D interfaces

Nordic dongle doesnt get listed here

I created user instead of root and added to dialout, But no luck

[Sigurd Hellesvik]

JANC said:

I created user instead of root and added to dialout, But no luck

From Installing Wireshark on Ubuntu Linux:

Did you also rememver to log out and in again

Can you do "ls -l" from  the extcap folder?

[JANC]

Yes in fact i restarted the machine and used in root config

this is at usr login

What is expected in this location? Can you share some file or screen shot of what is expected here? So i will know

This is x86 based machine using FC25 OS.

On Another note, i tried same steps on ubuntu machine - just to check

I dont see any file in extcap directory here also and when i force open the tshark, i get below message

tshark: The capture session could not be initiated on interface '/dev/ttyACM0' (No such device exists).
Please check that you have the proper interface or pipe specified.
0 packets captured

Thanks

[Sigurd Hellesvik]

JANC said:

Yes in fact i restarted the machine and used in root config

I specified "ls -l" because I also need to see permissions on the files. The screenshots is not enough.

However, I see that root is the owner of the user files, so that may interfere.

JANC said:

What is expected in this location? Can you share some file or screen shot of what is expected here? So i will know

Disregard files other than "nrf802154_sniffer.py".

JANC said:

On Another note, i tried same steps on ubuntu machine - just to check

I dont see any file in extcap directory here also

You must manually move files into extcap directory.

If you get the same issue on Ubuntu, I guess you are missing some steps.
Please make sure to follow every step explained in the nRF Sniffer for 802.15.4 guide.

JANC said:

tshark: The capture session could not be initiated on interface '/dev/ttyACM0' (No such device exists).

Can you show me the output of these commands?

ls /dev/ttyACM*
groups

[JANC]

Yes i copied the python file manually in extcap directory and executed. No other files is added here.

wcduser@wcduser-Latitude-7480:/usr/share/wireshark/extcap$ ls -l /dev/ttyACM*
crw-rw-rw- 1 root dialout 166, 0 Sep 20 14:43 /dev/ttyACM0

wcduser adm dialout cdrom sudo dip plugdev lpadmin lxd 

This ubuntu machine.

As i am using the user login and not root, the wireshark exists in this path /usr/share/wireshark/extcap

Where is the extcap file expected to be available?