Hi all,
First post and all that, so I'm not quite certain whether such sharing is encouraged in this environment, but here goes.
I wrote an (relatively) short article on a debugging / tracing technique that might be of interest to other people working in the embedded space. The technique is especially relevant when you cannot do tracing using hardware debuggers and have complex call-chains, but the visualization part is also quite broadly applicable, so you might find it useful for more complex tracing needs. The two tools covered in the article are open source software, and do not require installation/building and have no dependencies outside python, so friction should be minimal.
Here's the article, and apologies in advance if this goes against the policy (which I couldn't easily find): https://lowerstrata.net/post/serial-tracing/
br,
ak.