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Andrew NeilBest answer
Super User
September 30, 2025
There are probably tools that will take C source code and produce flowcharts - this won't be specific to STM32.
For example:

(other internet search engines are available)
I doubt that converting HAL code to flowcharts will be very useful.
A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.
