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Yocto for Raspberry Pi

Yocto for Raspberry Pi

By : Pierre-Jean, Mabäcker
2 (4)
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Yocto for Raspberry Pi

Yocto for Raspberry Pi

2 (4)
By: Pierre-Jean, Mabäcker

Overview of this book

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).
Table of Contents (13 chapters)
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3
3. Mastering Baking with Hob and Toaster

Creating the Yocto/OE environment


Now that we have developed the main application, what remains for us is to integrate it with our Yocto RPI environment.

Modifying the image

The first step consists of integrating the nodejs package (located at meta-openembedded/meta-oe/recipes-devtools/nodejs) with the Raspberry Pi environment. For this, we have to add the following line to raspberry-pack-image:

# Base this image on core-image-minimal 
include recipes-core/images/core-image-minimal.bb 
DESCRIPTION = "Image for raspberry-pi" 
IMAGE_FEATURES += "ssh-server-dropbear splash" 
# Include modules in rootfs 
IMAGE_INSTALL += " \ 
    kernel-modules \ 
    gpio-packt    \ 
    i2c-tools    \ 
    spitools    \ 
    nunchuck    \ 
    v4l-utils    \ 
    nodejs    \     
"

We have now integrated nodejs with our Poky distro.

Creating the recipe file

The second step consists of creating the recipe file; let's call this recipe webserver-packt_01.bb.

The idea is to have the following architecture inside the...

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