I find this eval board https://www.st.com/en/evaluation-tools/steval-isa172v2.html
I was quite interested in it and I would like to try a fully digitally controlled power supply.
Unfortunately, ST somehow forgot to publish the firmware for both controllers STM32F334
I can not find or I am not able to understand the depth of ST management thoughts?
You have not searched for software support for this board
or you know about another better documented project
Already written to tech support to enquire? I found ST, like all of these companies have been with my queries about specific ICs at times, answer when the query is seen - maybe a few days, maybe a month. If it's for a production design I suspect they bump you to the top of the priority reply list and hear from them asap.
Obviously the board is shipped flashed with a demonstration software. Question is if the kit also includes software sources?
There may be different reasons why the software isn't published freely, e.g. besides IP consideration, it can be because the quality isn't mind blowing.