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Hands-On Embedded Programming with Qt

You're reading from   Hands-On Embedded Programming with Qt Develop high performance applications for embedded systems with C++ and Qt 5

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Product type Paperback
Published in Jul 2019
Publisher Packt
ISBN-13 9781789952063
Length 416 pages
Edition 1st Edition
Languages
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Author (1):
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John Werner John Werner
Author Profile Icon John Werner
John Werner
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Table of Contents (22) Chapters Close

Preface 1. Section 1: Getting Started with Embedded Qt FREE CHAPTER
2. Setting Up the Environment 3. Writing Your First Qt Application 4. Running Your First Application on the Target 5. Section 2: Working with Embedded Qt
6. Important Qt Concepts 7. Managing the Overall Workflow 8. Exploring GUI Technologies 9. Adding More Features 10. Section 3: Deep Dive into Embedded Qt
11. Qt in the Embedded World 12. Exploring the IoT with Qt 13. Using More Qt-Related Technologies 14. Section 4: Advanced Techniques and Best Practices
15. Debugging, Logging, and Monitoring Qt Applications 16. Responsive Application Programming - Threads 17. Qt Best Practices 18. Assessments 19. Other Books You May Enjoy Appendix A: BigProject Requirements
1. Appendix B: Bonus Code - Simplifying Q_PROPERTY

Weaving a web of sockets

Never quite happy with what we give them, marketing has decided we need to add yet another feature to the BigProject:

  • Requirement 20: It should be possible to remotely monitor the temperature reading

To implement this requirement, we will use WebSocket. A WebSocket is a bi-directional connection over TCP (the first part of TCP/IP) that is commonly used with web applications. Because we are learning about Qt, we will use Qt's WebSocket support.

Websockets require two halves—a server that provides data and a client that consumes the data. Every time new data is available, the server will send the data down the WebSocket to the client using JSON. The client will then determine how it wants to handle the data.

The more I work with Qt, the more I enjoy it. It feels like the Qt Framework was developed by real engineers who wanted to solve real...

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