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Getting Started with ESP32 FreeRTOS: A Hands-On Guide to Real-Time Embedded Programming, Multitasking, and IoT Development
Paperback
General ComputersIndustrial Design
Publisher: Independently Published
Published: Apr 12 2026
Pages: 476
Weight: 2.41
Height: 0.96 Width: 8.50 Depth: 11.00
Language: English
What separates a blinking LED from a deployed IoT device that runs reliably for years? The answer is almost always the same: a real-time operating system, used correctly.
Most embedded developers hit a wall. They can write code that works on a bench - reading a sensor, toggling a pin, connecting to Wi-Fi. But when they try to combine three things at once, everything breaks. The Wi-Fi stack starves the sensor task. The button handler blocks everything else. The device crashes after six hours for no obvious reason. They patch it, and something else breaks. The problem isn't their code. It's the architecture. They're building concurrent systems with single-threaded thinking.
Getting Started with ESP32 FreeRTOS is the book that closes that gap. Written specifically for the ESP32 and ESP-IDF v5.x, it teaches you to think in tasks, design with queues and semaphores, and build firmware that handles real-world complexity without falling apart. From your first xTaskCreate() call to a fully deployed multi-sensor IoT dashboard with Wi-Fi telemetry, BLE connectivity, and over-the-air updates - this book takes you the entire distance.
Inside, you will learn how to:
- Design multi-task firmware from scratch - understand task states, priorities, the dual-core scheduler, and how to pin tasks to the right core for maximum performance
- Master every synchronisation primitive - queues, binary and counting semaphores, mutexes with priority inheritance, event groups, and task notifications, with clear guidance on when to use each one
- Integrate hardware peripherals the right way - UART, SPI, and I2C communication with thread-safe driver patterns, GPIO interrupts with proper ISR-to-task deferred processing, and high-resolution timers
- Build rock-solid wireless connectivity - connect to Wi-Fi with exponential backoff reconnection, expose sensor data over BLE using a GATT server, and POST telemetry to cloud dashboards over HTTPS
- Debug and profile running firmware - decode panic backtraces with the IDF monitor, use GDB over JTAG to inspect every task simultaneously, measure CPU load with runtime statistics, and track stack usage before it causes crashes
- Ship production-quality devices - implement OTA firmware updates with automatic rollback, harden your device with flash encryption and secure boot, and apply the field testing protocol that separates a reliable product from an expensive paperweight
The book culminates in a complete capstone project: a multi-sensor IoT dashboard that combines everything - BME280 and UV sensors over I2C, ADC-sampled light readings, a BLE GATT server, Wi-Fi HTTP telemetry, GPIO button handling, and a system health monitor - built using the same task architecture and design patterns used in professional IoT firmware today.
Every chapter builds on the last. Every concept is grounded in working, production-quality code. No hand-waving, no oversimplified toy examples - just the real patterns that real embedded engineers use.
Whether you are a hobbyist who has outgrown Arduino, a software developer making your first move into embedded systems, or a hardware engineer who wants to write firmware that scales, this book gives you the mental models, the tools, and the confidence to build things that actually work in the field.
Stop hacking around concurrency bugs and start engineering firmware that runs forever - pick up your copy today and write your first production-ready IoT application.
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