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Yocto for Raspberry Pi
Yocto for Raspberry Pi

Yocto for Raspberry Pi: Create unique and amazing projects by using the powerful combination of Yocto and Raspberry Pi

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Yocto for Raspberry Pi

Chapter 2.  Building our First Poky Image for the Raspberry Pi

In this chapter, we will try to understand the basic concepts of the Poky workflow. Using the Linux command line, we will proceed with the different steps required to download, configure, and prepare the Poky Raspberry Pi environment and generate an image that can be used by the target.

Installing the required packages for the host system

The steps necessary for the configuration of the host system depend on the Linux distribution used. Indeed, it is advisable to use one of the Linux distributions maintained and supported by Poky. This is to avoid wasting time and energy in setting up the host system. Currently, the Yocto Project is supported on the following distributions:

  • Ubuntu 12.04 (LTS)
  • Ubuntu 13.10
  • Ubuntu 14.04 (LTS)
  • Fedora release 19 (Schrödinger's Cat)
  • Fedora release 21
  • CentOS release 6.4
  • CentOS release 7.0
  • Debian GNU/Linux 7.0 (Wheezy)
  • Debian GNU/Linux 7.1 (Wheezy)
  • Debian GNU/Linux 7.2 (Wheezy)
  • Debian GNU/Linux 7.3 (Wheezy)
  • Debian GNU/Linux 7.4 (Wheezy)
  • Debian GNU/Linux 7.5 (Wheezy)
  • Debian GNU/Linux 7.6 (Wheezy)
  • openSUSE 12.2
  • openSUSE 12.3
  • openSUSE 13.1

Note

Even if your distribution is not listed here, it does not mean that Poky will not work, but the outcome is not guaranteed. Throughout this book, you will be presented with instructions for using Poky with...

Building the Poky image

At this stage of development, let's have a look at the available images and certified compatible for our platform (.bb files).

Choice of image

Poky provides several pre-designed image recipes that we can use to build our own binary image. We can check the list of available images by running the following command from the poky directory:

$ ls meta*/recipes*/images/*.bb

All the recipes provide images that are, in essence, sets of unpacked and configured packages, generating a filesystem that we can use on actual hardware (for further information about different images, you can visit ( http://www.yoctoproject.org/docs/latest/mega-manual/mega-manual.html#ref-images ).

Next, here's a brief representation of available images:

Choice of image

We can add the layers proposed by meta-raspberry to all of these layers:

$ ls meta-raspberrypi/recipes-core/images/*.bb
rpi-basic-image.bb
rpi-hwup-image.bb
rpi-test-image.bb
  • rpi-hwup-image.bb: This is an image based on core-image-minimal.
  • rpi...

Booting the image on the Raspberry Pi

We now come to what is surely the most anticipated moment of this chapter: the moment where we boot our Raspberry Pi with a fresh Poky image.

You just have to insert your SD card into a slot, connect the HDMI cable to your monitor, and connect the power supply (it is also recommended to used a mouse and keyboard to shut down the device, unless you plan on just pulling the power and possibly corrupting the boot partition).

After connecting the power supply, you should see the Raspberry Pi splash screen:

Booting the image on the Raspberry Pi

Note

The login for the Yocto/Poky distribution is root.

Summary

In this chapter, we learned the steps required to set up Poky and get our first image built. We ran that image on the Raspberry Pi, which gave us a good overview of the available capabilities.

In the next chapter, you will be introduced to Hob, which provides a human-friendly interface for Bitbake. We will use it to build an image and customize it further. After that, you will be introduced to another tool, Toaster, which is a web interface for Bitbake.

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Key benefits

  • *Set up and configure the Yocto Project efficiently with Raspberry Pi
  • *Deploy multimedia applications from existing Yocto/OE layers
  • *An easy-to-follow guide to utilize your custom recipes on your Raspberry Pi

Description

The Yocto Project is a Linux Foundation workgroup, which produces tools (SDK) and processes (configuration, compilation, installation) that will enable the creation of Linux distributions for embedded software, independent of the architecture of embedded software (Raspberry Pi, i.MX6, and so on). It is a powerful build system that allows you to master your personal or professional development. This book presents you with the configuration of the Yocto Framework for the Raspberry Pi, allowing you to create amazing and innovative projects using the Yocto/ OpenEmbedded eco-system. It starts with the basic introduction of Yocto's build system, and takes you through the setup and deployment steps for Yocto. It then helps you to develop an understanding of Bitbake (the task scheduler), and learn how to create a basic recipe through a GPIO application example. You can then explore the different types of Yocto recipe elements (LICENSE, FILES, SRC_URI, and so on). Next, you will learn how to customize existing recipes in Yocto/OE layers and add layers to your custom environment (qt5 for example).

Who is this book for?

If you are a student or a developer of embedded software, embedded Linux engineer or embedded systems in competence with Raspberry Pi and want to discover the Yocto Project, then this book is for you. Experience with Yocto is not needed.

What you will learn

  • * Explore the basic concept of Yocto s build
  • system and how it is organized in order to
  • use it efficiently with Raspberry Pi
  • * Generate your first image with Yocto for
  • the Raspberry Pi
  • * Understand how to customize your Linux
  • kernel within the Yocto Project
  • * Customize your image in order to integrate
  • your own applications
  • * Write your own recipes for your graphical
  • applications
  • * Integrate a custom layer for the Raspberry Pi
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Publication date, Length, Edition, Language, ISBN-13
Last updated date : Feb 11, 2025
Publication date : Jun 29, 2016
Length: 214 pages
Edition : 1st
Language : English
ISBN-13 : 9781785281952
Vendor :
Raspberry Pi
Category :
Concepts :

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Publication date : Jun 29, 2016
Length: 214 pages
Edition : 1st
Language : English
ISBN-13 : 9781785281952
Vendor :
Raspberry Pi
Category :
Concepts :

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Table of Contents

12 Chapters
1. Meeting the Yocto Project Chevron down icon Chevron up icon
2. Building our First Poky Image for the Raspberry Pi Chevron down icon Chevron up icon
3. Mastering Baking with Hob and Toaster Chevron down icon Chevron up icon
4. Understanding BitBake Chevron down icon Chevron up icon
5. Creating, Developing, and Deploying on the Raspberry Pi Chevron down icon Chevron up icon
6. Working with External Layers Chevron down icon Chevron up icon
7. Deploying a Custom Layer on the Raspberry Pi Chevron down icon Chevron up icon
8. Diving into the Raspberry Pi's Peripherals and Yocto Recipes Chevron down icon Chevron up icon
9. Making a Media Hub on the Raspberry Pi Chevron down icon Chevron up icon
10. Playing with an LCD Touchscreen and the Linux Kernel Chevron down icon Chevron up icon
11. Contributing to the Raspberry Pi BSP Layer Chevron down icon Chevron up icon
12. Home Automation Project - Booting a Custom Image Chevron down icon Chevron up icon

Customer reviews

Rating distribution
Full star icon Full star icon Empty star icon Empty star icon Empty star icon 2
(4 Ratings)
5 star 25%
4 star 0%
3 star 0%
2 star 0%
1 star 75%
M. Salamon Feb 20, 2017
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Perfect book for beginners. Very recommended!
Amazon Verified review Amazon
Jonathan_Costa_Rica May 08, 2017
Full star icon Empty star icon Empty star icon Empty star icon Empty star icon 1
For the price is too basic... as an engineer is too poor for yocto, it is for beginners or for hobbies
Amazon Verified review Amazon
pj Nov 08, 2017
Full star icon Empty star icon Empty star icon Empty star icon Empty star icon 1
Most of the code samples are broken or unformatted, please see the attached pictures. The text is well written, but within the many code mistakes you cannot easily reproduce the examples.
Amazon Verified review Amazon
Adam A. Feb 14, 2023
Full star icon Empty star icon Empty star icon Empty star icon Empty star icon 1
I bought this book for 49$ dollars , and picked it based on the Index. The index promised a wide range of topics, which made the book worth the money. When the book arrived, I was shocked to find that it was very thin, so I thought maybe its condensed material. When I opened it, I found huge fonts used for headings, and lots of over-sized pictures and lots of unnecessary space, and paragraphs that were 2 or 3 lines. The content is extremely minimal and very rough and presented poorly and with 0 depth. This should not be called a book, or even a set of notes. Absolutely disappointing, and provides no value to the customer. Its a set of notes, and not a great one too, which leaves a lot of things out. This is borderline unethical, and the publisher is to blame, making a quick buck. I will never again buy a book from a publisher that tricks me into buying an almost empty book by using monster fonts and extra space and oversized pictures.
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