RE: nRF Connect SDK Inetermediate course - lesson 1 ex 1 - debug warnings and breakpoint issues

Einar Thorsrud — Mon, 09 Feb 2026 13:20:51 GMT

Hi,

[quote user=""]After building, I select <Debug> under Actions in VS Code. I get this popup that says "Debug options not enabled"`[/quote]

This warning is generated by the nRF Connect for VS Code when the build configuration generated there does not have debug optimizations enabled. If you have set it in prj.conf or similar as in this case, you can ignore the warning. To enable debug optimization in the build configuration do that like this when generating the build configuration:

[quote user=""]

I suspect debug-oriented optimization settings are not being set correctly, which I would expect to allow breakpoints at inlines and is probably why the "debugging options not enabled" is being shown.

[/quote]

Using CONFIG_DEBUG_OPTIMIZATIONS=y will pass the "-Og" to GCC, so it does not entirely disable optimization, but sets a compromise that is normally good enough for debugging while keeping some optimization. If you need to completely disable optimization, you should instead set CONFIG_NO_OPTIMIZATIONS=y, which disables all optimization with "-O0".