Book Image

Yocto for Raspberry Pi

By : TEXIER Pierre-Jean, Petter Mabäcker
Book Image

Yocto for Raspberry Pi

By: TEXIER Pierre-Jean, Petter 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 (18 chapters)
Yocto for Raspberry Pi
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
3
Mastering Baking with Hob and Toaster

Chapter 10.  Playing with an LCD Touchscreen and the Linux Kernel

When setting up an LCD touchscreen using an embedded Linux system, it's recommended to have basic knowledge of the Linux kernel and how to configure it. In this chapter, we will learn some basics about the Linux kernel and how to download, configure, and compile it using a cross compiler. The current recommendation when running a Linux-based system on the Raspberry Pi is to use the Raspberry Pi Linux kernel instead of the the mainline Linux kernel; we will learn why in this chapter.

Later in the chapter, we will go through how to boot an image based on the Yocto Project with a windowing system using a Raspberry Pi 7 touchscreen and a PiTFT 2.8 touchscreen. The chapter will end with a walkthrough of how to use the Qt application framework to develop graphical applications for the Raspberry Pi that are possible to play using a touchscreen.