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)
1
Part 1: Get Set Up
5
Part 2: Sharpen Your Skills

Optimizing Performance

Optimizing software for performance is an important topic for Cortex-M software development. Obtaining ample application performance from a particular Cortex-M device is essential to avoid selecting a processor with a higher cost, larger silicon area, or more power than needed. Optimizing performance can be used to select the correct processor for a given use case and can also be used after selecting a processor to optimize system performance in general.

In Chapter 1, Selecting the Right Hardware, we looked at the wide range of Cortex-M processors and reviewed use cases and hardware characteristics to help determine the right processor for an application. Processor selection, however, is only one variable contributing to building a system with optimal performance. There are two other key factors: compiler settings and algorithm implementation. Measuring performance and making informed changes to these three variables will lead to a solid design with excellent...