FreeRTOS Mastery Path¶

Mastery Path

BOOTCAMP

VINOD BHANUJA

A structured, module-wise FreeRTOS training program that takes you from "what is a real-time operating system?" to master-level real-time firmware design — tasks, queues, semaphores, timers, interrupts, kernel internals, and production RTOS architecture, with real compilable C/C++ code in every module and a hands-on project at the end of each level.

No hardware required to start. Level 1 uses the ESP32 Arduino framework, which ships with FreeRTOS built in, so every example runs in the free Wokwi online simulator — a browser-based ESP32 simulator with virtual LEDs, buttons, and sensors — and works unchanged on a real board. Prefer pure C on your PC? The FreeRTOS POSIX/Linux simulation port and QEMU are covered as alternatives too.

How the program is organized¶

Level	Focus	Modules
Level 1 · Entry	Why an RTOS, tasks, the scheduler, queues, semaphores & mutexes, software timers, notifications, ISRs, memory & debugging	9 topics + 1 capstone
Level 2 · Intermediate	Stream/message buffers, static allocation, tickless idle & low power, ESP-IDF specifics, POSIX port, design patterns	9 topics + 1 project
Level 3 · Advanced	Kernel internals, context switching, SMP scheduling, MPU support, tracing, porting, performance tuning	9 topics + 1 project
Level 4 · Master	Safety-certified FreeRTOS, formal timing analysis, production architecture, certification workflows, fault tolerance	9 topics + 1 capstone

How to use this site¶

Work through each level in order — later modules assume earlier ones.
Every topic page has real, compilable C/C++ code using genuine FreeRTOS APIs (xTaskCreate, vTaskDelay, xQueueSend, ...) — paste the sketches into the Wokwi simulator as an ESP32 project and run them as you read.
New to Arduino or the ESP32 itself? The sibling Embedded Systems Mastery Path covers boards, GPIO, serial, and sensors from scratch — this site focuses on the RTOS layer.
Each level ends with a project that combines everything learned in that level.
Use the search bar (top of the page) to jump straight to a topic.

Start here → Level 1 · Entry

🎥 Prefer video? Watch the Mastery Path video series on YouTube — Shorts and full walkthroughs of these lessons.