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🍓 Welcome to the Nan0berryOS Wiki

Nan0berryOS is a bare-metal, deterministic, preemptive, and ultra-lightweight Real-Time Operating System (RTOS) designed for the ARM Cortex-M0+ (RP2040 / Raspberry Pi Pico) architecture.

📌 Project Overview

Nan0berryOS combines a preemptive multitasking kernel driven by SysTick interrupts, a hardware abstraction layer (HAL), an in-RAM Virtual File System (VFS), and an interactive CLI interface (USB Serial).

• Current Version: v1.0.0 (STABLE)
• Lead Maintainer: Gabriel Ornellas Tourinho Pereira
• License: MIT (Open Source)
• Organization: Nan0berry Development Team

🧭 Documentation Navigation

• Architecture Overview — RP2040 diagrams and memory layout.
• Kernel & Scheduler — Context switching, PendSV, and TCB structures.
• Virtual File System (VFS) — RAM-based file table, file descriptors, and syscalls.
• Mutex & Synchronization — Locking and releasing concurrent resources.
• CLI Shell & Commands — How to register and use commands in the USB terminal.
• Build System & Toolchain — Compilation using Pico SDK, CMake, and Ninja.
• LLM & Developer Guide — C style guidelines and context for AIs.
• Maintainer & License — Author information and license terms.