Hard vs soft real-time, FreeRTOS task scheduling, queues, semaphores, mutexes, interrupt service routines, and meeting timing guarantees. The embedded systems course for engineers who need determinism.
This is a text-first course that links out to the best supporting material on the internet instead of trying to replace it. The goal is to make this the best course on rtos you can find — even without producing a single minute of custom video.
This course is built by engineers who ship rtos systems in production. It reflects how these tools actually behave at scale — not how the documentation describes them.
Every day includes working code examples you can copy, run, and modify right now. The goal is understanding through doing.
Instead of re-explaining existing documentation, this course links to the definitive open-source implementations and the best reference material on rtos available on the internet.
Each day is designed for about an hour of focused reading plus hands-on work. Do the whole course over a week of lunch breaks. No calendar commitment, no live classes, no quizzes.
Each day stands alone. Read them in order for the full picture, or jump straight to the day that answers the question you have today.
Hard vs soft real-time, determinism, worst-case execution time (WCET), the difference between a bare-metal super-loop and an RTOS, and when you actually need an RTOS vs when you don't.
Task creation, stack allocation, priority assignment, preemptive vs cooperative scheduling, the FreeRTOS tick, time slicing, and debugging priority inversion with the vTaskList() diagnostic.
xQueueCreate for inter-task communication, binary and counting semaphores for synchronization, mutexes with priority inheritance to prevent priority inversion, and the producer/consumer pattern in embedded C.
ISR vs task communication with FromISR functions, DMA for memory transfers without CPU involvement, NVIC priority configuration, the rules for what you can and cannot do inside an ISR.
vTaskDelay vs vTaskDelayUntil for precise timing, hardware watchdog configuration, stack overflow detection, heap fragmentation in embedded systems, and deploying FreeRTOS to STM32 or ESP32.
Instead of shooting our own videos, we link to the best deep-dives already on YouTube. Watch them alongside the course. All external, all free, all from builders who ship this stuff.
Complete introductions to FreeRTOS — task creation, scheduler concepts, and running your first multi-task embedded program.
Hard vs soft real-time, scheduling algorithms, and why determinism matters in embedded systems.
Inter-task communication and synchronization — the primitives that make multi-task embedded programs safe and deterministic.
Writing safe ISRs, ISR-to-task communication, and the strict rules about what operations are permitted inside interrupt context.
Complete project walkthroughs running FreeRTOS on STM32 hardware with STM32CubeIDE — the most common target for RTOS development.
The best way to deepen understanding is to read the canonical open-source implementations. Clone them, trace the code, understand how the concepts in this course get applied in production.
The official FreeRTOS source. The /FreeRTOS/Source directory is the entire kernel — surprisingly readable C, especially queue.c and tasks.c.
Community-maintained collection of FreeRTOS examples targeting STM32 microcontrollers — covering tasks, queues, timers, and low-power modes.
Espressif IoT Development Framework for ESP32. Includes FreeRTOS integration with ESP32-specific additions — the production RTOS SDK for one of the most popular embedded platforms.
ARM's CMSIS-RTOS2 wrapper around FreeRTOS — the standardized RTOS API used across Cortex-M MCUs from different vendors.
You've written bare-metal C. This course explains when and how to add an RTOS — and more importantly, whether you actually need one.
FreeRTOS concepts map closely to OS concepts you already know. This course bridges the gap between high-level concurrency and embedded-systems constraints.
ESP32 and STM32 products that handle sensor data, communication, and actuators benefit enormously from an RTOS. This course covers the production-grade patterns.
The 2-day in-person Precision AI Academy bootcamp covers embedded systems and real-time programming in depth — hands-on, with practitioners who build AI systems for a living. 5 U.S. cities. $1,490. 40 seats max. June–October 2026 (Thu–Fri).
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