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

Setting up an LCD display for the Raspberry Pi using the Yocto Project


There exist a number of different LCD displays for the Raspberry Pi. Among the most popular are the official Raspberry Pi 7 touchscreen and the PiTFT displays (often called PiTFT Hats, since they are suitable to mount on top of the Raspberry Pi). For now, we will focus on the Raspberry Pi 7 touchscreen and the PiTFT models.

In this section, we will go through how to boot a standard Yocto Project image, containing a window system and a working touchscreen.

The Raspberry Pi 7 touchscreen

Getting started with the Raspberry Pi 7 touchscreen using an image based on the Yocto Project requires quite a few configurations. First, we need to ensure we are using a 4.1+ kernel. Starting from the jethro release of meta-raspberrypi, 4.1 is the default version. Currently, meta-raspberrypi lacks full support for the Raspberry Pi 7 touchscreen, so we need to perform some small modifications before booting our image.

Note

Build instructions...