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Mastering Embedded Linux Programming

You're reading from Mastering Embedded Linux Programming Unleash the full potential of Embedded Linux

Product type Paperback

Published in Jun 2017

Publisher Packt

ISBN-13 9781787283282

Length 478 pages

Edition 2nd Edition

Tools

Linux

Concepts

System Programming

Author (1):

Chris Simmonds

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Table of Contents (23) Chapters

Title Page

Credits

About the Author

About the Reviewers

www.PacktPub.com

Customer Feedback

Preface

1. Starting Out FREE CHAPTER

2. Learning About Toolchains

3. All About Bootloaders

4. Configuring and Building the Kernel

5. Building a Root Filesystem

6. Selecting a Build System

7. Creating a Storage Strategy

8. Updating Software in the Field

9. Interfacing with Device Drivers

10. Starting Up – The init Program

11. Managing Power

12. Learning About Processes and Threads

13. Managing Memory

14. Debugging with GDB

15. Profiling and Tracing

16. Real-Time Programming

Using Mender for local updates

So much for the theory. In the last two sections of this chapter I want to demonstrate the principles I have talked about so far with examples of software update working in practice. As the basis of the example I will be using Mender. Mender uses a symmetric A/B image update mechanism, with fall-back in the case of a failed update. It can operate in a standalone mode for local updates, or in managed mode for OTA updates. I will begin with the standalone mode.

Mender is written and supported by mender.io (https://mender.io). There is much more information about the software in the documentation section of the web site. I will not delve deeply into the configuration of the software here, since my aim is to illustrate the principles of software update.

Building the Mender client

The Mender client is available as a Yocto Project meta layer. These examples use the Morty release of the Yocto Project, which is the same one that we used in Chapter 6, Selecting a Build...

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Authors (1)

Chris Simmonds

Chris Simmonds

Chris Simmonds is a software consultant and trainer living in southern England. He has almost two decades of experience in designing and building open-source embedded systems. He is the founder and chief consultant at 2net Ltd, which provides professional training and mentoring services in embedded Linux, Linux device drivers, and Android platform development. He has trained engineers at many of the biggest companies in the embedded world, including ARM, Qualcomm, Intel, Ericsson, and General Dynamics. He is a frequent presenter at open source and embedded conferences, including the Embedded Linux Conference and Embedded World.

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