Browse Library
Sign In Start Free Trial
Close icon Search icon
Account
Browse Library Advanced Search Sign In Start Free Trial

Add to playlist

Create a Playlist

Modal Close icon
You need to login to use this feature.
  • Yocto for Raspberry Pi
  • Toc
  • feedback
Yocto for Raspberry Pi

Yocto for Raspberry Pi

By : Pierre-Jean, Mabäcker
2 (4)
close
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)
close
close
Preface
Preface
What this book covers
What you need for this book
Who this book is for
Conventions
Reader feedback
Customer support
Free Chapter
1
1. Meeting the Yocto Project
1. Meeting the Yocto Project
The Yocto Project
The core components
Yocto Project - workflow
Summary
2
2. Building our First Poky Image for the Raspberry Pi
2. Building our First Poky Image for the Raspberry Pi
Installing the required packages for the host system
Building the Poky image
Booting the image on the Raspberry Pi
Summary
3
3. Mastering Baking with Hob and Toaster
3. Mastering Baking with Hob and Toaster
Hob
Exploring Toaster
Summary
4
4. Understanding BitBake
4. Understanding BitBake
BitBake
Metadata
Parsing metadata
Preferences and providers
Dependencies
Fetching
Understanding BitBake's tasks
Summary
5
5. Creating, Developing, and Deploying on the Raspberry Pi
5. Creating, Developing, and Deploying on the Raspberry Pi
Software development kits (SDKs)
Raspberry Pi and a package manager
IPK packages
Our application - an introduction
Our application - creating the recipe
Summary
6
6. Working with External Layers
6. Working with External Layers
Introducing layers
The basic concepts of layers
Adding external layers to the Raspberry Pi
Summary
7
7. Deploying a Custom Layer on the Raspberry Pi
7. Deploying a Custom Layer on the Raspberry Pi
Creating the meta-packt_rpi layer with the yocto-layer script
Adding gpio-packt to meta-packt_rpi
Patching gpio-packt
Creating the raspberry-packt-image.bb image
Deploying the raspberry-packt-image.bb image
Summary
8
8. Diving into the Raspberry Pi's Peripherals and Yocto Recipes
8. Diving into the Raspberry Pi's Peripherals and Yocto Recipes
The SPI bus
The i2c bus
The Wii Nunchuck
The Raspberry Pi connection
Summary
9
9. Making a Media Hub on the Raspberry Pi
9. Making a Media Hub on the Raspberry Pi
Project description – CPU temperature monitoring
Creating the main application
Creating the Yocto/OE environment
Deploying raspberry-packt-image
Testing the application
The future of this project
Summary
10
10. Playing with an LCD Touchscreen and the Linux Kernel
10. Playing with an LCD Touchscreen and the Linux Kernel
The Linux kernel
Setting up an LCD display for the Raspberry Pi using the Yocto Project
Developing applications and using them on an LCD display
Summary
11
11. Contributing to the Raspberry Pi BSP Layer
11. Contributing to the Raspberry Pi BSP Layer
Open source
Contributing to open source projects
Exploring Git
Contributing to the Yocto Project
Summary
12
12. Home Automation Project - Booting a Custom Image
chevron up
12. Home Automation Project - Booting a Custom Image
Home automation using a Raspberry Pi
Setting up the base for the project
Creating the server side
Creating a packet list for your image
Putting it all together
Controlling the relay using the Raspberry Pi
Controlling the lamp using the Raspberry Pi
Turning on/off the lamp from a smartphone
Extra - using a Raspberry Pi with an LCD as the client
Summary

Turning on/off the lamp from a smartphone

Our home automation project is nearly finished, but one important thing remains: we need to ensure that it's possible to control the light using a remote device, such as a smartphone. First of all, we need to check on the board whether the web server is present:

$ ps | grep server
295 root 2732 server.init

If the server for some reason hasn't auto-started, we can try to manually start it using this command:

$ /etc/init.d/server-packt-init start
starting Nodejs app: server.init... done.
root@raspberrypi2:~#    info  - socket.io started
listening on *:3344

If we manually perform some changes to the web server directly on the Raspberry Pi, we can restart the web server by using this command:

$ /etc/init.d/packt-server restart
stopping Nodejs app: server.init... stopped node (pid 295)
done.
starting Nodejs app: server.init... done.

Now, we can start the web browser on our smartphone and go to http://my_rpi_ipaddress:3344. You will see the same...

End of Section 9
Next Section
bookmark search playlist download
font-size

Change the font size

margin-width

Change margin width

day-mode

Change background colour

Close icon Search
Country selected
Close icon Your notes and bookmarks

Delete Bookmark

Modal Close icon
Are you sure you want to delete it?
Cancel
Yes, Delete