nRF Sniffer extcap pipe gives error FIFO does not exist.

[J0sh1101]

Hi!

I follow the instructions in the Bluetooth Low Energy Fundamentals course in Lesson 6 - Bluetooth LE Sniffer. I managed to install the plugin in Wireshark, but when I run the nRF Sniffer I get the following error message:

I checked if the com port 10 exists and if it generates some data, and it does do something. Here is the output. 

 

The problem is when I disconnect from the serial terminal v1.0.1 and try to connect to the nRF Sniffer, I get the above error. When I try to reconnect to the v1.0.1 serial terminal, I only get the blank screen. It seems that the USB endpoint for COM10 is closed. I try to reset it with the RESET button, but that doesn't change anything. LED 1 flashes at the same high frequency before and after - no change.
(I assume this is used in the main loop to check if a hard error has been triggered. When I disconnect the power and reconnect the unit, it works again.)

Can you reproduce the same behaviour?

Thanks for the help!

OS: Windows

SDK: 2.3.0

IDE: Visual Studio Code

Hardware: nRF52840 DK

[Edvin]

Hello,

Are you sure that your COM port is not being used by something else? Looking at the second screenshot, it obviously sends some data. 

Try power cycling the board after you programmed it (to make sure that it is not connected to anything else), and then open it in wireshark.

I see that you are using Windows 11. I am not aware of any reasons why that shouldn't work, but do you have access to a machine running Windows 10? Does it work there?

Best regards,

Edvin

[J0sh1101]

Hi, 

Hello!

I found out that the problem was that I used the wrong USB port. I used the USB where the debugger is connected, but after some time I got the idea that maybe I need to use another USB port. The other free USB on DK was nRF USB close to the reset button. I connected it and it worked.

Thanks for the help!