PicoCalc OS (Rust)

A simple operating system for the Clockwork PicoCalc, written in Rust.
This project provides a minimal kernel, ABI, and user-space applications to experiment with OS development on constrained hardware.

Project Structure

• kernel/ – The core OS kernel (task scheduling, drivers, memory, etc.)
• abi/ – Shared application binary interface definitions for kernel ↔ userspace interaction
• abi_sys/ – System-level ABI helpers
• shared/ – Shared utilities and common code across kernel and user applications
• user-apps/ – Collection of userspace programs (calculator, snake, etc.)

Features

• Minimal Rust-based kernel targeting the PicoCalc
• Custom ABI for safe communication between kernel and applications
• Support for multiple user-space applications
• Hardware drivers tailored for the PicoCalc

Getting Started

git clone https://github.com/LegitCamper/picocalc-os-rs.git
cd picocalc-os-rs
just calculator
# copy the calculator to the sdcard and rename it to calculator.bin
just kernel