Zephyr RTOS in Action: Build Secure, Production Ready IoT on ARM, RISC-V & ESP32 with CMake, Kconfig and Devicetree

Zephyr RTOS in Action is your complete, hands-on guide to mastering one of the most powerful open-source real-time operating systems for modern IoT and embedded development. Written with clarity and precision, it takes you from the very first line of code to fully deployable, production-ready firmware that runs on ARM, RISC-V, and ESP32 architectures — using Zephyr’s modern, scalable build system built on CMake, Kconfig, and Devicetree.Backed by the Linux Foundation and supported by major industry players such as Intel, Google, NXP, and Nordic Semiconductor, Zephyr has become the preferred RTOS for secure, connected, and future-proof IoT systems. This book doesn’t just explain how Zephyr works — it shows you why it works, guiding you through every layer of its architecture, from the kernel and scheduler to drivers, networking, and security frameworks.Through step-by-step examples and in-depth explanations, you’ll learn how to:Configure and build Zephyr projects using CMake, West, and KconfigDescribe hardware cleanly and portably with DevicetreeWrite custom device drivers and integrate peripherals like GPIO, I²C, SPI, ADC, and UARTImplement real-time multitasking using Zephyr’s lightweight kernel and preemptive schedulerConnect devices securely with MQTT, CoAP, TLS, and MCUboot-based firmware authenticationManage power efficiently across multiple architecturesTest, debug, and profile applications with Ztest, GDB, and OzoneDeploy professional-grade firmware pipelines with CI/CD and version managementWhether you’re building a smart sensor, a BLE gateway, or an industrial IoT controller, this book walks you through practical projects and case studies that mirror real-world deployments. Each chapter builds progressively toward professional mastery — from simple multithreaded examples to secure, networked, cloud-connected devices that scale to production.Who This Book Is ForEmbedded developers migrating from FreeRTOS, ThreadX, or vendor SDKsIoT engineers building secure and scalable connected devicesFirmware professionals seeking reproducible build systems and modern configuration workflowsStudents, researchers, and hobbyists eager to explore real-time systems with open-source toolsYou’ll gain not only the technical skill to build robust systems, but also the engineering discipline to design firmware that’s portable, maintainable, and secure.Why This Book MattersZephyr represents the new generation of RTOS development — one that unites hardware abstraction, configuration-driven design, and industry-grade security in a single coherent framework. If you want to future-proof your embedded career and master the RTOS that’s shaping the next decade of IoT innovation, this book is your roadmap.Don’t just write code — build systems that last.Step into the future of embedded development today with Zephyr RTOS in Action — and start creating secure, connected, and production-ready devices that stand the test of time. Read more