Embedded Rust Book

Introduction

The book "Embedded Rust Book" (the official Rust guide for embedded systems) is an authoritative resource created by the Rust Embedded Devices Working Group. It provides a practical introduction to development for microcontrollers and bare-metal systems in the Rust language. Unlike many other books, this material is distributed for free and is constantly updated by the community, making it especially valuable for beginner embedded engineers.

What This Book Is About

The book covers the full cycle of embedded software development in Rust: from toolchain setup to debugging and optimization. The main focus is on memory safety, the absence of undefined behavior, and efficient use of microcontroller resources. The authors consistently guide the reader through key concepts: peripherals, interrupts, DMA, RTIC (Real-Time Interrupt-driven Concurrency), and working with the no_std environment.

Structure and Content

The material is divided into logical blocks:

• Introduction to Embedded Rust: installing the toolchain, creating the first project, working with cargo and target triple.
• Working with Peripherals: GPIO, UART, SPI, I2C — using popular microcontrollers as examples (STM32, nRF, Raspberry Pi Pico).
• Safety and Guarantees: using types to prevent configuration errors, RAII for resource management.
• Concurrency and Real-Time: RTIC, message queues, interrupt handling without data races.
• Debugging and Profiling: GDB, ITM, RTT, stack sampling.
• Advanced Topics: DMA, memory management, writing custom drivers.

Who This Book Is For

The book is intended for developers already familiar with the basics of Rust (syntax, ownership, borrowing) but who have no experience in embedded development. It will also be useful for experienced C/C++ embedded engineers who want to switch to Rust and understand its advantages in the context of microcontrollers.

What the Reader Will Learn

• How to set up an environment for development on ARM Cortex-M, RISC-V, and other architectures.
• How to write safe code for working with registers and peripherals without unsafe (thanks to svd2rust and PAC crates).
• How to use RTIC to create deterministic multitasking applications.
• How to effectively debug embedded programs using GDB and tracing.
• How to minimize power consumption and use sleep modes.
• How to integrate Rust code with existing C libraries (FFI).

Strengths of the Book

• Relevance: the book is kept up to date by the Rust Embedded Devices Working Group, ensuring compliance with the latest versions of the compiler and crates.
• Practical Focus: each section is accompanied by working code examples that can be run immediately on real hardware or in an emulator (QEMU).
• Safety as a Priority: the authors consistently demonstrate how Rust's type system helps avoid entire classes of errors typical of C/C++ (buffer overflows, use of uninitialized memory, data races).
• Openness: the book is distributed under a Creative Commons license, the source code of the examples is available on GitHub — you can not only read but also contribute corrections.
• Community: an active community has formed around the book where you can ask questions and get help.

Who It Is Recommended For

The book will be useful for:

• Beginner embedded developers who want to start with a modern and safe language.
• Experienced Rust programmers who want to expand