Hands-On Embedded Programming with Qt

Develop high performance applications for embedded systems with C++ and Qt 5

John Werner 지음

Packt(GCO Science) 2019년 07월 12일 출간

작품소개

책소개

▶Book Description
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 practical experience in developing an embedded Qt project, you will also gain valuable insights into best practices for Qt development, along with exploring advanced techniques for testing, debugging, and monitoring the performance of Qt applications. Through the course of the book, the examples and projects are demonstrated in a way so that they 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.

▶What You Will Learn
- Understand how to develop Qt applications using Qt Creator under Linux
- Explore various Qt GUI technologies to build resourceful and interactive applications
- Understand Qt's threading model to maintain a responsive UI
- Get to grips with remote target load and debug under Qt Creator
- Become adept at writing IoT code using Qt
- Learn a variety of software best practices to ensure that your code is efficient

▶Key Features
- Learn to create fluid, cross-platform applications for embedded devices
- Achieve optimum performance in your applications with QT Lite project
- Explore the implementation of Qt with IoT using QtMqtt, QtKNX, and QtWebSockets

▶Who This Book Is For
This book is for software and hardware professionals with experience in different domains who are seeking new career opportunities in embedded systems and IoT. Working knowledge of the C++ Linux command line will be useful to get the most out of this book.

목차

▶TABLE of CONTENTS
1. Setting Up the Environment
2. Writing Your First Qt Application
3. Running Your First Application on the Target
4. Important Qt Concepts
5. Managing the Overall Workflow
6. Exploring GUI Technologies
7. Adding More Features
8. Qt in the Embedded World
9. Exploring the IoT with Qt
10. Using More Qt-Related Technologies
11. Debugging, Logging, and Monitoring Qt Applications
12. Responsive Application Programming - Threads
13. Qt Best Practices

책 속으로

▶What this book covers
- Chapter 1, Setting Up the Environment, covers the setup of the host and target environments we will be using for the rest of the book. It starts by specifying the host hardware we will be using for learning purposes. From there, it moves on to covering how to set up the host development environment with Qt and other tools. Cross-compiling Qt for the target environment and preparing the target operating system are also covered. Parts of this chapter can be completed without the need for the host.

- Chapter 2, Writing Your First Qt Application, has been written so that you can continue learning without the target system. In this chapter, we'll write our first Qt program and execute it on the host. In the process, you will learn how to start Qt Creator; build a widgets-based Qt application; compile it for the host, run it, and even debug it; all from within the Qt Creator IDE.

- Chapter 3, Running Your First Application on the Target, takes the application we wrote and ran on the host in Chapter 2, Writing Your First Qt Application, and focuses on running that application on the target. You will learn how to set up a Qt Creator kit that will allow you to simply select all the proper tools and settings to cross-compile, deploy, run, and debug on an embedded target. You will also be introduced to the problem of differing screen resolutions and sizes and how to easily solve it in Qt.

- Chapter 4, Important Qt Concepts, starts laying the groundwork for the remainder of the book by exploring some of the basic, underlying concepts that are found throughout Qt. We will look at signals and slots, Qt's introspection system, the model/view architecture, and how Qt abstracts hardware and software platforms so that we can easily write code once and run it on many different systems.

- Chapter 5, Managing the Overall Workflow, starts by looking at how we develop safe software systems with the highest possibility of success, both in terms of quality and time to market. From there, we start BigProject. We will work on this as we learn how to develop embedded software with Qt. As we move through the book, the mythical marketing and management teams reveal the new requirements of BigProject, just like they have done in real-world projects I have worked on. To overcome one of the first changes they make, we will learn about mocking.

- Chapter 6, Exploring GUI Technologies, starts by examining the two different GUI technologies, widgets and Qt Quick/QML, which are available in Qt. As we finish up exploring the differences between them and the different ways in which they are developed, there are new requirements given to us for BigProject , leading us to learn how we can combine the two GUI technologies in a single application.

- Chapter 7, Adding More Features, introduces a number of new requirements. In order to satisfy these requirements, we will learn how to interact with SQL databases using Qt, design state machines graphically in Qt Creator and have them automatically converted to C++ code, deploy a virtual keyboard, and use Qt's WebSocket support. Throughout this journey, we will be adding to BigProject. We will also look at the often overlooked world of IoT security, learning why it is important, and how we can find out more about it.

- Chapter 8, Qt in the Embedded World, takes a step back and looks at Qt's place in the embedded world. We will learn how the computer and embedded markets have changed since Qt was first written. We will then examine how Qt is licensed and learn what we need to be careful of in terms of which license we develop and release our product under. We will then look at some of the commercial products Qt offers to make embedded development even easier, and even see some of the specific packages Qt has developed for targeted markets, such as medical, automotive, and safety-critical systems.
...

출판사 서평

▶ Preface
Welcome to Hands-On Embedded Programming with Qt!

By means of the pages, examples, and projects in this book, you will get hands-on experience of developing a Qt application on an embedded target. Through the development of an overarching project, BigProject, you will learn about and gain experience with the many technologies that the Qt framework has to offer the embedded developer.

You will also be exposed to safe programming practices that will help you save time and prevent bugs in the field.

작가정보

저자(글) John Werner

John Werner is an internationally published author, engineer, consultant, and conference speaker with more than 15 years' experience. He has earned patents for inventions ranging from Inkjet printers to automotive ignition systems. John was one of the early users of Qt on QNX and contributed to the early knowledge of how to make it work. He is a contributor to the Qt-related information on Stack Exchange. He is currently a senior software engineer, specializing in Qt development, for Caliber Imaging & Diagnostics.