Book Image

Hands-On Embedded Programming with Qt

By : John Werner
Book Image

Hands-On Embedded Programming with Qt

By: John Werner

Overview of this book

Qt is an open source toolkit suitable for cross-platform and embedded application development. This book uses inductive teaching to help you learn how to create applications for embedded and Internet of Things (IoT) devices with Qt 5. You’ll start by learning to develop your very first application with Qt. Next, you’ll build on the first application by understanding new concepts through hands-on projects and written text. Each project will introduce new features that will help you transform your basic first project into a connected IoT application running on embedded hardware. In addition to gaining practical experience in developing an embedded Qt project, you will also gain valuable insights into best practices for Qt development and explore advanced techniques for testing, debugging, and monitoring the performance of Qt applications. The examples and projects covered throughout the book can be run both locally and on an embedded platform. By the end of this book, you will have the skills you need to use Qt 5 to confidently develop modern embedded applications.
Table of Contents (22 chapters)
Free Chapter
1
Section 1: Getting Started with Embedded Qt
5
Section 2: Working with Embedded Qt
10
Section 3: Deep Dive into Embedded Qt
14
Section 4: Advanced Techniques and Best Practices
Appendix A: BigProject Requirements

Publishing our status using MQTT

The following new requirement has come in: Req 22: The product must integrate with an IoT protocol such as MQTT or KNX.

In Chapter 7, Adding More Features, we looked at how easily Qt makes working with WebSockets; now we are going to take a look at a couple of more specific IoT protocols—MQTT and KNX. Both of these protocols are supported directly in Qt's commercial product, Qt for Automation (see Chapter 8, Qt in the Embedded World), and are made available as a source code extension under the (L)GPL license. Since we are using the (L)GPL version of Qt, we will be building them ourselves.

Building IoT extensions

If you can build Qt for the Raspberry Pi, you can build a couple of...