Complete Guide to C for Embedded Systems: From Code to Hardware Control: Second Edition — Learn, Build, and Deploy Embedded C

Code doesn’t just run — it resonates with the physical world.
— Allien Moody

Whether you're just starting in embedded systems or you're an engineer ready to level up, this Second Edition of Complete Guide to C for Embedded Systems offers the knowledge, tools, and confidence to build real applications using C — from the first line of code to full system integration.

What’s Inside
This hands-on guide walks you through everything you need to become fluent in embedded C:

• C Programming Fundamentals – Data types, memory models, control flow, and pointers.
• Microcontroller Programming – GPIOs, timers, interrupts, and direct hardware access.
• Peripheral Integration – Sensors, actuators, displays, SD cards, UART, I2C, and SPI.
• Real-Time System Design – State machines, watchdogs, multitasking, and FreeRTOS.
• Connectivity & Cloud – Wi-Fi integration and MQTT for IoT applications.
• Debugging & Testing – GDB, logic analyzers, UART logs, and systematic troubleshooting.
• Capstone Project – Build a complete sensor-to-cloud system using platform-agnostic C.
What’s New in This Second Edition
Built upon real reader feedback from the first edition, this version has been extensively revised:

Reorganized structure with clearer learning flow
Removed repetitive content and enhanced chapter transitions
Added chapters on FreeRTOS, debugging tools, and code portability
New diagrams, real-world examples, and code walkthroughs
More advanced projects with cloud connectivity and data logging
Plus: scattered throughout the book, you'll find poetic interludes and reflections by Allien Moody, the author’s heteronym — reminding you that engineering is also art, and that real systems have soul.
Who This Book Is For
Students and self-learners entering embedded development
Engineers transitioning from application-level to low-level firmware
Developers who want a complete and practical guide to embedded C
If you want to build firmware that doesn’t just run — but responds, senses, logs, and connects — this is your book.