hands-free/openre ? reverse-engineered prompt

Build me a small open source robotics embedded library for STM32 that I can use for mobile robot projects.

I want it to include a basic demo like an LED toggle example, plus a simple robot firmware example for a wheeled robot. Please make it easy to build with makefiles, and support the common OpenRE boards mentioned in the repo, especially the F1 and F4 targets. It should include the usual board level setup, robot control pieces, motor and IMU style helpers, and the bits needed to flash the firmware from the command line.

If there are existing docs or examples in the repo, wire the project up so they actually work and are easy to follow. I also want the structure to stay friendly for future expansion into other robot features, and if anything depends on current toolchain details, look up the latest docs online if you need to.