Xiao - Designing embedded systems and the internet of things (IoT) with the ARM Mbed

1. Chapter 1
2. Chapter 3
3. Chapter 4
4. Chapter 11

1. Chapter 1
2. Chapter 2
3. Chapter 3
4. Chapter 1
5. Chapter 2
6. Chapter 3
7. Chapter 4
8. Chapter 5
9. Chapter 6
10. Chapter 7
11. Chapter 8
12. Chapter 9
13. Chapter 10
14. Chapter 11
15. Chapter 12

Perry Xiao

London South Bank University
UK

This edition first published 2018

2018 John Wiley & Sons Ltd

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Library of Congress Cataloging-in-Publication Data

Names: Xiao, Perry, author.

Title: Designing embedded systems and the internet of things (IoT) with the ARM Mbed / by Perry Xiao.

Description: First edition. | Hoboken, NJ : John Wiley & Sons, Inc., [2018] |

Includes bibliographical references and index. |

Identifiers: LCCN 2018008687 (print) | LCCN 2018015034 (ebook) | ISBN 9781119364016 (pdf) | ISBN 9781119364047 (epub) | ISBN 9781119363996 (cloth)

Subjects: LCSH: Embedded computer systems-Design and construction | Internet of things-Equipment and supplies. | Microcontrollers.

Classification: LCC TK7895.E42 (ebook) | LCC TK7895.E42 X56 2018 (print) | DDC 006.2/2-dc23

LC record available at https://lccn.loc.gov/2018008687

Cover design by Wiley

Cover image: matejmo/Getty Images; Raimundas/Shutterstock

This book is dedicated to my family. To my wife, May, my son, Zieger, and my daughter, Jessica, who make my life complete-without them, life would be meaningless. To my parents and my brother, who have shared their life and love with me that ultimately made me what I am today. To my friends and colleagues, who supported me throughout my career.

Dr. Perry Xiao is an associate professor and course director at the School of Engineering, London South Bank University, London, United Kingdom. He got his BEng degree in OptoElectronics, MSc degree in Solid State Physics, and PhD degree in Photophysics. He is a chartered engineer (CEng), a Fellow (FIET) from Institution of Engineering and Technology (IET) and a Senior Fellow (SFHEA) from Higher Education Academy (HEA). He has been teaching electronics, software, computer networks, and telecommunication subjects at both undergraduate level and postgraduate level for nearly two decades. He is also supervising BEng final project students and MSc project students every year. His main research interest is to develop novel infrared and electronic sensing technologies for skin bioengineering applications and industrial nondestructive testing (NDT). To date, he has finished seven PhD student supervisions, obtained two UK patent applications, published more than 100 scientific papers, been editorial reviewer for nine journals, and generated nearly 1 million in research grants.

He is also a director and cofounder of Biox Systems Ltd., UKa university spinoff company that designs and manufactures stateoftheart skin measurement instruments, AquaFlux and Epsilon, which have been used in more than 70 organizations worldwide, including leading cosmetic companies, universities, research institutes, and hospitals.

When I first got the Arm Mbed LabinaBox (LiB) kits from a colleague a few years ago, I could not hide my excitement. It was a box of mbed NXP LPC1768 development boards donated through the ARM University Program. One of the key features of the Arm Mbed system is that you can write and compile your code online through a web browser. This was completely new to me. I have been using various microcontrollers throughout my life. I did my BEng final year project on laser energy control using Intels 8051 singlechip microcontroller back in the 1980s. The concept was very simple: read the voltage value from the laser power monitor, compare it with a desired value, and calculate the required adjustment to feed back to the laser to increase or decrease the laser output. But we had to design and make our own printed circuit boards (PCB) and to write our own code that would run on 8051. At that time, programming microcontrollers was not a trivial task. You needed to write the program in assembly language and punch in the corresponding hexadecimal code into the microcontroller. We spent many sleepless nights in the lab, mainly for debugging the code. I have since worked with many other microcontrollerbased embedded systems, and the experiences were very mixed. Some of the embedded systems were so difficult to use that you would need to download this software, download that toolchain, etc. Using my students words, you needed a PhD just to get the compiler software running. The code was also sophisticatedyou would need to configure this register, and configure that port. You could produce lines of lines of code, which did not even do much!