You're reading from Mastering Embedded Linux Programming - Third Edition

Product typeBook

Published inMay 2021

PublisherPackt

ISBN-139781789530384

Edition3rd Edition

Concepts

Embedded Systems

Authors (2):

Frank Vasquez

Chris Simmonds

View More author details

Measuring power usage

For the examples in this chapter, we need to use real hardware rather than virtual. This means that we need a BeagleBone Black with working power management. Unfortunately, the BSP for the BeagleBone that comes with the meta-yocto-bsp layer does not include the necessary firmware for the Power Management IC (PMIC), so we will use
a pre-built Debian image instead. The missing firmware might exist in the meta-ti layer, but I did not investigate that. The procedure for installing Debian on the BeagleBone Black is the same as what we covered in Chapter 12, Prototyping with Breakout Boards, except for the Debian version.

To download the Debian Stretch IoT microSD card image for the BeagleBone Black, issue the following command:

$ wget https://debian.beagleboard.org/images/bone-debian-9.9-iot-armhf-2019-08-03-4gb.img.xz

10.3 (aka Buster) was the latest Debian image for AM335x-based BeagleBones at the time of writing. We will use Debian 9.9 for the exercises...

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Mastering Embedded Linux Programming - Third Edition

Published in: May 2021Publisher: PacktISBN-13: 9781789530384

Authors (2)

Frank Vasquez

Frank Vasquez is an independent software consultant specializing in consumer electronics. He has over a decade of experience designing and building embedded Linux systems. During that time, he has shipped numerous devices including a rackmount DSP audio server, a diver-held sonar camcorder, and a consumer IoT hotspot. Before his career as an embedded Linux engineer, Frank was a database kernel developer at IBM where he worked on DB2. He lives in Silicon Valley.
Read more about Frank Vasquez

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.
Read more about Chris Simmonds

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