Book Image

Hands-On RTOS with Microcontrollers

By : Brian Amos
Book Image

Hands-On RTOS with Microcontrollers

By: Brian Amos

Overview of this book

A real-time operating system (RTOS) is used to develop systems that respond to events within strict timelines. Real-time embedded systems have applications in various industries, from automotive and aerospace through to laboratory test equipment and consumer electronics. These systems provide consistent and reliable timing and are designed to run without intervention for years. This microcontrollers book starts by introducing you to the concept of RTOS and compares some other alternative methods for achieving real-time performance. Once you've understood the fundamentals, such as tasks, queues, mutexes, and semaphores, you'll learn what to look for when selecting a microcontroller and development environment. By working through examples that use an STM32F7 Nucleo board, the STM32CubeIDE, and SEGGER debug tools, including SEGGER J-Link, Ozone, and SystemView, you'll gain an understanding of preemptive scheduling policies and task communication. The book will then help you develop highly efficient low-level drivers and analyze their real-time performance and CPU utilization. Finally, you'll cover tips for troubleshooting and be able to take your new-found skills to the next level. By the end of this book, you'll have built on your embedded system skills and will be able to create real-time systems using microcontrollers and FreeRTOS.
Table of Contents (24 chapters)
Section 1: Introduction and RTOS Concepts
Section 2: Toolchain Setup
Section 3: RTOS Application Examples
Section 4: Advanced RTOS Techniques

Chapter 16

  1. Multi-core means multiple cores on the same IC while multi-processor means multiple processors (ICs) in the same design.
  2. True. Asymmetric architectures don't require the various processing cores to be treated in the same way, so any combination of operating systems and bare-metal programming languages can be used (within the restrictions of the hardware).
  3. False. There are many aspects to consider when selecting the best bus for a given application since each application will have its own set of unique circumstances and requirements.
  4. The additional complexity needs to be weighed against the possibility of not performing the same work twice. When reusable subsystems are developed, they can create considerable cost savings under the right circumstances. They have little to no nonrecurring engineering (NRE) costs associated with them when re-used.