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

Debugging Tools for Real-Time Systems

Serious debugging tools are incredibly important in serious embedded systems development. Complex RTOS-based systems can have many tasks and dozens of ISRs that need to be completed in a timely manner. Figuring out whether everything is working properly (or why it isn't) is way easier with the right tools. If you've been troubleshooting with the occasional print statement or blinking LEDs, you're in for a treat!

We'll be making heavy use of Ozone and SystemView throughout the remainder of this book but first, we'll need to get them set up and look at a quick introduction. Toward the end of this chapter, we'll take a look at other debugging tools, as well as techniques for reducing the number of bugs that get written in the first place.

In a nutshell, we will be covering the following in this chapter:

  • The importance...