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
Section 1: Getting Started with Embedded Qt
Section 2: Working with Embedded Qt
Section 3: Deep Dive into Embedded Qt
Section 4: Advanced Techniques and Best Practices
Appendix A: BigProject Requirements

Examining Qt's different threading models

Before we start exploring how we can use Qt's thread support, we should understand the support Qt has for threads. Most of Qt's thread support is on the C++ side, but there is also support in QML.

In this section, we will learn about the following Qt thread models:

  • Simple Threads
  • Thread pools
  • Qt Concurrent (run, map, filter, and reduce)
  • QML WorkerScript

We will start with simple threading using QThreads.

Simple threads

As Qt has evolved over almost 30 years, its thread support has also evolved. One of the earliest and most simplistic support methods for threading is QThread. QThread encapsulates the idea of a thread and it provides its own event loop. The event loop...