Learning FreeRTOS

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More by Leon S. Falk : Learning FreeRTOS

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Real-time systems don’t fail because developers are careless. They fail because timing, concurrency, and memory are unforgiving. Learning FreeRTOS is a practical, hands-on guide for developers who need to build reliable, deterministic, production-grade embedded systems—not demos that “mostly work.” This book teaches FreeRTOS the way it is actually used in real products: sensors streaming data, interrupts firing at the wrong time, tasks competing for CPU, memory running out quietly, and bugs that only appear after days of uptime. Instead of abstract theory or API lists, you will learn how real-time behavior is designed, measured, debugged, and verified—step by step. What makes this book different Most FreeRTOS books explain what the APIs do. This book teaches why systems fail, how to prevent it, and how to recover when they do. You won’t just create tasks—you’ll learn how to size stacks correctly, choose priorities that don’t collapse under load, and design communication paths that stay safe under pressure. You won’t just use queues and semaphores—you’ll understand when each primitive is appropriate and when it becomes a liability. From bare-metal limitations to ISR-safe APIs, from heap selection to priority inversion, every concept is grounded in real engineering trade-offs and backed by runnable, production-style examples. Inside this book, you will learn how to: Understand what “real-time” truly means in embedded systems—and when it matters Design deterministic task scheduling with FreeRTOS Choose the correct heap model and avoid silent memory corruption Build safe inter-task communication using queues, semaphores, mutexes, and event groups Communicate correctly between interrupts and tasks using FromISR APIs Diagnose stack overflows, hard faults, deadlocks, and race conditions Measure task timing, latency, and jitter with confidence Build event-driven and low-power FreeRTOS systems Structure large FreeRTOS projects for long-term maintainability Test and validate real-time behavior before shipping Know when FreeRTOS is no longer the right tool—and what to consider next Who this book is for This book is written for: Embedded developers moving from bare-metal to RTOS-based systems Engineers already using FreeRTOS who want predictability, stability, and confidence Firmware developers shipping products on microcontrollers (ARM Cortex-M and similar) Professionals preparing for embedded or real-time systems interviews This book is not for readers looking for surface-level tutorials or copy-paste examples without understanding. How this book is structured Each chapter builds practical understanding through: Clear explanations written in plain, professional language Complete, runnable code examples Real-world failure scenarios and how to debug them Design patterns used in production systems Checklists, troubleshooting playbooks, and practical exercises By the end of this book, you won’t just “know FreeRTOS.” You’ll understand how to design, reason about, debug, and ship real-time systems with confidence.

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