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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

Developing applications and using them on an LCD display

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 ...

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