I built a small real‑time operating system for ARM Cortex‑M as a step‑by‑step guide to teach how an RTOS is built from scratch.
The kernel starts from a few hundred lines and grows through context switching, scheduling, interrupts, and simple IPC — all explained in a minimal, readable way.
If you want a practical, tiny example that shows exactly how to write an operating system for microcontrollers, this project is designed for that.
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[ 3.3 ms ] story [ 15.6 ms ] threadIf you want a practical, tiny example that shows exactly how to write an operating system for microcontrollers, this project is designed for that.