The Embedded OS

An experimental "from scratch" operating system project aimed at the RP2040/RP235x microcontroller.

Goals

• Fully functional kernel - built on top of the embassy framework
• Provides a computer experience like the original MS-DOS
• Ability to load external programs from storage
• Can a full OS be written in Rust?

Structure

• kernel - The Kernel
• kernel_abi - The public ABI exposed by the kernel
• libsys - A friendly Rust interface for using the ABI
• loader - Load the kernel and launching the shell
• shell - User control via CLI
• apps/ - external apps

Hardware Requirements

• RP2040 or RP235x microcontroller
• ST7920 display

Contributing

This is just an personal experiment. Therefore this project is not open for contribution.

License

Copyright (c) 2026 Leo Spratt. Licensed under Apache License, Version 2.0.