For development I use VSCode with clangd rather than intelliSenseEngine because it reads compile_commands.json directly — correct ARM toolchain headers, exact build flags, no manual config.

Make sure clangd is installed on your system:

sudo apt-get install -y clangd && clangd --version

Read SWO debug text stream

SWO is not used by the project (USART is more reliable). Here is how to use it for reference.

Characters written to ITM_SendChar show up in a view named SWV ITM Data Console, but its configuration button does not work, so the view falls short.

st-trace --clock=16m

Warning: This requires a patch of st-trace(0001-fix-st-trace-fix-SWO-trace-on-STLINK-V3-HS-bulk-endp.patch) otherwise it will fail with 2026-06-08T23:00:36 ERROR usb.c: read_trace insufficient buffer length