Book Image

The Insider's Guide to Arm Cortex-M Development

By : Zachary Lasiuk, Pareena Verma, Jason Andrews
Book Image

The Insider's Guide to Arm Cortex-M Development

By: Zachary Lasiuk, Pareena Verma, Jason Andrews

Overview of this book

Cortex-M has been around since 2004, so why a new book now? With new microcontrollers based on the Cortex-M55 and Cortex-M85 being introduced this year, Cortex-M continues to expand. New software concepts, such as standardized software reuse, have emerged alongside new topics including security and machine learning. Development methodologies have also significantly advanced, with more embedded development taking place in the cloud and increased levels of automation. Due to these advances, a single engineer can no longer understand an entire project and requires new skills to be successful. This book provides a unique view of how to navigate and apply the latest concepts in microcontroller development. The book is split into two parts. First, you’ll be guided through how to select the ideal set of hardware, software, and tools for your specific project. Next, you’ll explore how to implement essential topics for modern embedded developers. Throughout the book, there are examples for you to learn by working with real Cortex-M devices with all software available on GitHub. You will gain experience with the small Cortex-M0+, the powerful Cortex-M55, and more Cortex-M processors. By the end of this book, you’ll be able to practically apply modern Cortex-M software development concepts.
Table of Contents (15 chapters)
Part 1: Get Set Up
Part 2: Sharpen Your Skills

Overview of RTOSs

RTOSs were created as embedded devices matured to simplify software development—like OS-based software—while retaining the reliability and deterministic behavior of bare-metal software. The more sophisticated microcontroller-based products with their variety of peripherals benefit from the multitasking, deterministic behavior and services of an RTOS. RTOSs come with a scheduler that makes it easier to manage a large variety of tasks. The main difference between an OS and an RTOS is that an RTOS responds to external events in deterministic and minimal time—hence the name real time. Middleware stacks are often available with RTOSs and can be easily integrated.

There is a wide variety of RTOSs available in the ecosystem for Arm Cortex-M-based devices. Some of these are available for free and are open sourced, while others are available at cost for commercial use and often packaged with an integrated development environment (IDE) from the vendor...