You're reading from Mastering Embedded Linux Development Craft fast and reliable embedded solutions with Linux 6.6 and The Yocto Project 5.0 (Scarthgap)

Product type Paperback

Published in May 2025

Publisher Packt

ISBN-13 9781803232591

Length 710 pages

Edition 4th Edition

Tools

Linux

Concepts

Embedded Systems

Authors (2):

Frank Vasquez

Chris Simmonds

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Table of Contents (28) Chapters

Preface

1. Part 1: Elements of Embedded Linux

2. Starting Out FREE CHAPTER

3. Learning about Toolchains

4. All about Bootloaders

5. Configuring and Building the Kernel

6. Building a Root Filesystem

7. Part 2: Building Embedded Linux Images

8. Selecting a Build System

9. Developing with Yocto

10. Yocto under the Hood

11. Part 3: System Architecture and Design Decisions

12. Creating a Storage Strategy

13. Updating Software in the Field

14. Interfacing with Device Drivers

15. Prototyping with Add-On Boards

16. Starting Up – The init Program

17. Managing Power

18. Part 4: Developing Applications

19. Packaging Python

20. Deploying Container Images

21. Learning about Processes and Threads

22. Managing Memory

23. Part 5: Debugging and Optimizing Performance

24. Debugging with GDB

25. Profiling and Tracing

26. Real-Time Programming

27. Index

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Measuring power usage

For the examples in this chapter, we need to use real hardware rather than virtual. This means that we need a BeaglePlay with working power management. The necessary firmware for BeaglePlay’s Power Management Integrated Circuit (PMIC) might exist in the meta-ti layer but I did not investigate that. We will use a pre-built Debian image instead.

The procedure for installing Debian on BeaglePlay is the same as in Chapter 12. Revisit the Installing Debian on BeaglePlay section and flash the eMMC with Debian Bookworm if you have not already. Remove any microSD from your BeaglePlay and boot from the eMMC. SSH to beaglebone.local and log in as the debian user.

Verify that the correct version of Debian is running:

debian@BeagleBone:~$ cat /etc/os-release
PRETTY_NAME="Debian GNU/Linux 12 (bookworm)"
NAME="Debian GNU/Linux"
VERSION_ID="12"
VERSION="12 (bookworm)"
VERSION_CODENAME=bookworm
ID=debian
HOME_URL=&quot...

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You're reading from Mastering Embedded Linux Development Craft fast and reliable embedded solutions with Linux 6.6 and The Yocto Project 5.0 (Scarthgap)

Table of Contents (28) Chapters

Measuring power usage

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Authors (2)

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