I wanted to use the trim switches to tune my Betaflight PID's, but quickly realized they didn't work in the manner I hoped.
Thanks to the great source code and docker build environment, I was able to download the Debiation source, find and modify the relavent code, and have it flashed and working in almost no time at all. Kudos to you all for making it so easy.
What I did was change the behaviour of the "Momentary" step option for trims, so that the default value is now centered, and pushing the trim switch momentary moves the output to opposite extremes depending on he direction the trim was pushed.
This allowed me to setup inflight adjustments in Betaflight. For example, I can individually adjust my roll and pitch P values up and down just by pushing the obvious trim switches.
Perhaps there was already a way to do this without modifying the source code, please let me know if I've missed the obvious! If not and this feature sounds valuable to others, I'd be happy to create a PR for it. Currently I've modified the behaviour of the existing Momentary option, but I believe it could also be implemented as a new option altogether.
Patch is attached.
