How to use RTT viewer with custom board

[choehyunho]

Hi teams,

Recently, I made a custom board based on nRF52833 DK.

It works fine until now, and most of things works well.

But, I cannot make the board to show logs in RTT viewer.

In emStudio, and when I execute "Go", the internal debug terminal shows all logs as normal.

But, when I connect RTT viewer via J-Link, and tried to reset the board, nothing showed up in RTT viewer.

Before building custom board, I tested with 52833 DK, and had no problem with RTT viewer.

What should I change for it working?

[Vidar Berg]

Hi,

So to confirm, are you able to view RTT messages from your custom board in the SES debug terminal, but not with the RTT viewer? The problem is likely with the RTT viewer or its configuration then, not with your board or FW.

[choehyunho]

Hi.

Correct. I can see messages in SES debugging session, but not in RTT viewer.

As you can see the below capture, I have nothing special config when I connected to 52833 DK.

Should I change something in my custom board?

[Vidar Berg]

Hi,

The RTT Viewer settings are correct at least. Please make sure there aren't any other active Jlink connections when you try this (eg active debug session in SES), and try to update to the latest J-link SW if it still doesn't work.  

[choehyunho]

After upgrading J-Link to 6.70G, RTT viewer is working. Thank you for support.