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FreeRTOS

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May 1, 2024 Updated May 11, 2025 23 minute read

FreeRTOS is a popular real-time operating system (RTOS) kernel designed for embedded devices. It's known for its compact size, reliability, and open-source licensing, making it a go-to choice for a wide array of microcontrollers and embedded systems. Think of it as a specialized operating system that manages tasks on small, resource-constrained devices, ensuring that critical operations happen precisely when they need to. This real-time capability is crucial for applications where timing is everything, such as in automotive systems, medical devices, or industrial control.

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Reading list

We've selected 27 books that we think will supplement your learning. Use these to develop background knowledge, enrich your coursework, and gain a deeper understanding of the topics covered in FreeRTOS.
Is an authoritative guide to FreeRTOS from the original author. It covers the technical details of the operating system in depth, making it a valuable resource for advanced developers.
Offers a practical approach to learning FreeRTOS by implementing projects on STM32 microcontrollers. It's highly relevant for gaining hands-on experience with a popular hardware platform used with FreeRTOS. The second edition covers contemporary practices and tools, making it a valuable resource for students and professionals seeking practical skills.
This is the official book on the FreeRTOS kernel, written by its creator. It provides a fundamental and comprehensive understanding of FreeRTOS concepts and API. It is an essential read for anyone starting with FreeRTOS and serves as a primary reference for its features and usage. While older print editions exist, the most current version is typically found in the official FreeRTOS documentation online.
Delves into the design and implementation of operating systems for embedded and real-time systems. It offers a deeper understanding of how an RTOS kernel, like FreeRTOS, works internally. The second edition includes contemporary topics and is suitable for graduate students and professionals looking for in-depth knowledge of RTOS architecture.
Covers the use of FreeRTOS on ARM Cortex-M4/M7 microcontrollers. It provides a step-by-step guide to setting up FreeRTOS on these microcontrollers and developing applications for them.
This comprehensive book covers the theory and analysis techniques for designing real-time systems. It's valuable for understanding the constraints and challenges inherent in real-time applications that utilize RTOS like FreeRTOS. The fifth edition includes updated content and strong reference for advanced students and practitioners focusing on real-time performance and verification.
While not strictly about RTOS, this book highly recommended guide to designing robust and efficient embedded software. The design patterns and practical advice are invaluable when developing applications that run on FreeRTOS. The second edition incorporates recent developments and must-read for embedded software engineers at all levels.
Provides a solid theoretical foundation in real-time operating system concepts that are applicable to FreeRTOS and other RTOSes. It's valuable for understanding the underlying principles behind multitasking, scheduling, and synchronization. While not FreeRTOS-specific or recently published, its coverage of fundamental concepts makes it a classic and useful prerequisite or supplementary read.
Offers insights into the design and implementation of a basic real-time operating system kernel. Reading this book can provide a deeper understanding of the internal workings of an RTOS like FreeRTOS, complementing the user-level knowledge gained from other resources. It's more suited for those who want to understand the 'how' and 'why' behind RTOS features.
This recent book focuses on programming ARM microcontrollers in C without an operating system. It builds foundational skills in hardware interaction and low-level programming that are essential prerequisites for working with FreeRTOS on bare metal. It's highly recommended for those new to embedded C and microcontroller programming.
Provides guidance on how to debug embedded systems, including a chapter on debugging FreeRTOS applications.
Provides a detailed look at the architecture and programming of ARM Cortex-M microcontrollers, a common platform for FreeRTOS. Understanding the underlying hardware is crucial for effective RTOS development. The fourth edition recent and comprehensive resource for gaining this foundational knowledge in both C and assembly language.
A classic in the field of small real-time kernels, this book provides a detailed explanation of the design and implementation of the MicroC/OS-II RTOS. While not FreeRTOS, studying its codebase and design principles offers valuable insights into RTOS concepts that are transferable. It's an excellent resource for understanding RTOS internals at a code level.
A practical companion to the theory book, this volume focuses on applying RTOS concepts using FreeRTOS on STM32 hardware with the STM32Cube toolchain. It's a hands-on guide that helps solidify theoretical knowledge through practical implementation. It's particularly useful for learners using this specific hardware and toolset.
Provides a practical introduction to using FreeRTOS on STM32 microcontrollers with the GCC toolchain. It's suitable for beginners who want to get hands-on experience with FreeRTOS on a specific, popular embedded platform. It helps solidify understanding through practical examples and project building.
Covers the fundamentals of embedded systems design, including a chapter on real-time operating systems. It provides a good overview of FreeRTOS for beginners.
Focuses on the theoretical aspects of real-time operating systems. It covers fundamental concepts and principles that underpin all RTOS, including FreeRTOS. It good resource for building a solid theoretical understanding before delving into practical implementation details.
For developers using or planning to use C++ in real-time embedded systems with FreeRTOS, this book valuable resource. It covers efficient C++ programming techniques relevant to resource-constrained environments and real-time constraints. The fourth edition is updated to C++20 and addresses contemporary practices in embedded C++ development.
A widely recognized classic in embedded systems, this book provides a high-level overview of embedded software development, including different RTOS architectures. It's helpful for gaining a broad understanding of the embedded landscape before diving deep into a specific RTOS like FreeRTOS. It serves more as foundational reading than a direct FreeRTOS reference.
Another solid theoretical book on real-time systems, covering scheduling, resource management, and other critical concepts. It provides a strong academic background for understanding the challenges and solutions in real-time computing environments where FreeRTOS is deployed. It complements practical FreeRTOS knowledge with theoretical depth.
Focuses on event-driven programming and state machines using UML statecharts in embedded systems. This design approach is highly relevant for building responsive and structured applications that can run on an RTOS like FreeRTOS. It provides valuable design patterns and methodologies for creating complex embedded software.
Focuses on applying design patterns to embedded systems development using C. Design patterns are essential for creating well-structured and maintainable embedded software, including applications running on FreeRTOS. It's a useful resource for improving code quality and architectural design in embedded projects.
Offers a broader, more abstract perspective on embedded systems as cyber-physical systems. It explores modeling, design, and analysis from a higher level. While not focused on RTOS implementation, it provides valuable context for the role of FreeRTOS within larger embedded and IoT systems. The second edition relevant resource for graduate-level study.
The ESP32 very popular microcontroller for IoT projects, and FreeRTOS is often used in its development framework (ESP-IDF). provides practical guidance on building IoT applications on the ESP32, offering context for where FreeRTOS is applied in this domain. It's valuable for those interested in the intersection of FreeRTOS and IoT.
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