At this point, we have an image based on the Yocto Project with PiTFT display support up and running on our Raspberry Pi. In this section, we will develop a graphical application that we can use with our fancy touchscreen. When developing graphical applications, a couple of different frameworks exist. Qt is one of the most famous graphical frameworks for embedded devices and exists in a free software version. In this section, we will go through how to set up and develop a graphical application for embedded Linux environments using Qt and EGLFS. Qt is a cross-platform application framework, so besides being able to run on various types of hardware, it can also be used in many different software platforms (such as X11, OS X, Windows, and EGLFS). EGLFS, which we will be using in our example, is basically a platform plugin used for running Qt applications on top of EGL and OpenGL ES. In fact, it will not even require a window system (such...
Yocto for Raspberry Pi
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Yocto for Raspberry Pi
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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).
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Table of Contents (18 chapters)
Yocto for Raspberry Pi
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Free Chapter
Meeting the Yocto Project
Building our First Poky Image for the Raspberry Pi
Mastering Baking with Hob and Toaster
Understanding BitBake
Creating, Developing, and Deploying on the Raspberry Pi
Working with External Layers
Deploying a Custom Layer on the Raspberry Pi
Diving into the Raspberry Pi's Peripherals and Yocto Recipes
Making a Media Hub on the Raspberry Pi
Playing with an LCD Touchscreen and the Linux Kernel
Contributing to the Raspberry Pi BSP Layer
Home Automation Project - Booting a Custom Image
Customer Reviews