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Sniffer on OSX - revisited

It looks like the last discussion of Sniffer on Devzone was 2-3 yrs ago.

I’ve ordered the nRF Dongle and will download the Windows-based nRF Sniffer app.

i can run this with WireShark on a Windows VM on my Mac, though I would like a Mac OSX option.

- Any news on that front?

- Any way the Bluetooth hardware built into the MacBook could serve a Mac Sniffer app?


  • Still looking for a solution here.  I think a few others are having the same trouble.

    , what is the next steps?

  • Can you summarize your versions so I can look at it.

    OS Version:
    Wireshark version:
    Python version:
    Pyserial version:

    Segger jlink version on PC:
    Segger jlink version or build date on the jlink emulator on nRF5x-DK:

    nRF Sniffer version:

    PCA board number: 


    Python 32 bit or 64 bit:


    import ctypes

    8 -> 64 bit
    4 -> 32 bit

  • The baud rate I suggested was 460800 (not 46800 as I see in your screen shot). 
    Please connect to the port at 460800 and see if you are getting characters on the "screen".


  • Thanks for your patience.

    I get the same result as above with

    "screen cu.usbmodem1461 460800"


  • That is a problem, can you try with other terminal programs like minicom and open the port at 460800. You need to see something on the UART. Turn on the hardware flow control if possible.


    1. Can you verify that the board is indeed working by flashing some example program like ble_app_uart and running those examples.

    2, Can you also try with a different board 

    3. Specify the board PCA10040 and the PCA10031 version numbers ?

    4. Please stay on jlink 6.16c on the jlink emulator for all the experiments and actions.

    Edit: Additional Action:

    I checked if the jlink 6.16c for OS X and Windows are bundling the identical version of the jlink emulator firmware they are NOT. If you have a windows PC can you install jlink 6.16c and use the exec invalidatefw to set the jlink emulator firmware to what was bundled with jlink 6.16c for windows. Then use the board with OS X. Let me know if this is possible for you.

    Edit : ping

  • I've done all but the minicom step.  I ran the Windows j-Link Configurator and it shows this screen

    as in the sniffer 2.0 documentation

    I ran j-Link Commander and with exec invalidatefw I get this

    I said "no" since I think we're trying to stay on older builds... That said, I'm typing commands that I don't fully understand (I don't understand all of the layers involved)

    I expect my hardware is working (both the dongle (PCA10031) and the Dev Kit (PCA10040)).  I can use the dongle without trouble using nRFConnect on the Mac, and the DK works well with example SDK apps, and my own MIDI BLE app.

    I've stayed on the 6.16c version throughout (on Mac and Win)

    I did not easily find how to install minicom on the Mac.

    I did flash the Dev Kit board using the nRF52832_XXAA parameter to "erase"

    No difference in Wireshark visibility.

    Is there a chance of a screen-share where you could look over my shoulder, @David Edwin?

    I expect it's a missed step on my part... I have two hardware options to try, and access to all of the various permutations of j-link, segger and Wireshark.

    I'm available any time around the clock to make that happen (and have WebEx available for screen-sharing)

  • I've manage to get hold off an old macbook pro in order to mimic the settings David Edwin suggested.

    OS X 10.11.6
    Wireshark : 2.4.1 (also tried 2.4.2 and the latest 2.4.6)
    python 2.7.14 (installed with brew, could not find a way to install 2.7.10 using brew.)
    pyserial 3.2.1
    nRF Sniffer v2 Beta 1


    Segger jlink 6.16c

    Still the interface does not pop up in Wireshark. This is starting to be a bit frustrating now.

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