Using Percepio Tracealyzer for Tracing under NCS 2.9.1

[hmxmghl]

I have recently upgraded NCS SDK and Toolchains to v2.9.1 t for our project to resolve some critical issues we were having. After this upgrade, I haven't been able to run Percepio Tracealyzer.

Last I was successful in running Tracealyzer was when I was on NCS SDK and Toolchain version v2.0.2.

Some investigation into this showed that Percepio or TraceRecorder debug module are part of neither Zephyr source nor nrf-sdk source. I also found out that 'modules/debug/percepio' entry lives under _BLOCKED_PROJECTS list in ncs/v2.9.1/nrf/scripts/west_commands/ncs_commands.py

We have following configuration options already enabled:

CONFIG_TRACING=y
CONFIG_PERCEPIO_TRACERECORDER=y

But CONFIG_PERCEPIO_TRACERECORDER is not actually getting value 'y' because it is missing ZEPHYR_PERCEPIO_MODULE dependency. 

To summarize the problem statement, I need to be able to run Percepio Tracealyzer for tracing under NCS v2.9.1. Please let me know how that can be done!

[Boudewijn Dijkstra]

This problem was fixed in the main branch last year, but apparently the same fix wasn't applied to the v2.9 branch.

Temporary solution is to edit ncs/v2.9.1/nrf/west.yml and change "TraceRecorderSource" to "percepio", and run west update.

[hmxmghl]

Thank you for your help! That resolves the issue.