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

Breaking down PSA

The PSA framework was introduced by Arm in 2017. It was created to reconcile the growing number of intelligent connected devices around the world with the fractured and varied approach to securing them. Cortex-M-based products are as numerous as they are different; any one device has hundreds of unique hardware or software products from dozens of companies inside it. If even one of these products has a security gap, the entire device has a security vulnerability. By 2017, the need was clear for an industry-wide framework to holistically address the security problem in a cost-effective manner. The PSA framework fills that need.

We briefly covered PSA in Chapter 2, Selecting the Right Software. There is a white paper available at with an in-depth explanation of the three parts of PSA, as listed here:

  1. Threat models and security analyses, derived from a range of typical IoT use cases
  2. ...