Getting Started With the Internet of Things

by Pfister, Cuno

• ISBN13: 9781449393571
• ISBN10: 1449393578
• Format: Paperback
• Copyright: 2011-06-01
• Publisher: Maker Media Inc

Summary

The Internet of Things is the new generation of devices that serve as the Internet's interface to the physical world. Today's tiny microcontrollers, sensors, and actuators are powerful, inexpensive, and simple enough to code that anyone with basic programming skills can create a variety of fun, useful, and even profitable systems -- such as devices that detect and extinguish fires or automatically water plants when the soil becomes too dry. This hands-on introductory guide will quickly show you how it's done. You'll learn how to program embedded devices using the .NET Micro Framework and the Netduino Plus board, and then connect these devices to the Internet using Pachube, a cloud platform for sharing real-time sensor data. Getting Started with the Internet of Things briefly introduces the tools and then walks you though several techniques for using them, using a series of C# examples: Develop programs that demonstrate the use of simple outputs (actuators) and inputs (sensors) Build client programs that show how measurements can be pushed to an existing Web service Create server programs that provide Web services to clients on the Web Develop a program that is both client and server and runs in the cloud Get .NET classes and methods needed to implement all of the book's examples

Author Biography

Dr. Cuno Pfister, founder of Oberon microsystems, has been involved in a variety of industry projects, from building a power-plant monitoring system to creating a real-time Java operating system. He's interested in the very small meeting the very large, such as microcontrollers that talk to compute clouds in Web of Things applications.

Table of Contents

Preface	p. v
Introduction	p. 1
Hello World	p. 3
Setting Up the Development Environment	p. 3
Hello World	p. 4
Building the Program in Visual Studio	p. 5
Deploying to the Device	p. 6
Writing to Actuators	p. 11
Blinking Led	p. 11
Reading from Sensors	p. 15
Light Switch	p. 15
Voltage Reader	p. 20
Device as HTTP Client	p. 27
The Internet of Things	p. 29
HTTP	p. 30
Push Versus Pull	p. 34
Pachube	p. 37
Hello Pachube	p. 43
Setting Up the Network Configuration	p. 43
Hello Pachube	p. 48
What Netduino Said to Pachube	p. 55
What Pachube Said to Netduino	p. 57
Sending HTTP Requests-The Simple Way	p. 61
Simple Put Request	p. 61
Making Web Requests	p. 64
Sending HTTP Requests-The Efficient Way	p. 71
Efficient Put Request	p. 71
Hello Pachube (Sockets Version)	p. 77
Pachube Client	p. 77
Device as HTTP Server	p. 83
Hello Web	p. 85
Relaying Messages to and from the Netduino	p. 85
Hello Web	p. 87
Request Handlers	p. 92
Hello Web Html	p. 93
What You Should Know About Ports	p. 94
Handling Sensor Requests	p. 97
From Sensor Readings to HTTP Resources	p. 98
URIs of Measured Variables	p. 98
Voltage Monitor	p. 99
What You Should Know About HTTP GET	p. 103
Handling Actuator Requests	p. 105
From HTTP Resources to Controlling Things	p. 106
URIs of Manipulated Variables	p. 106
Led Controller	p. 107
Test Client in C#	p. 111
Embed a Java Script Test Client on the Netduino	p. 114
What You Should Know About HTTP PUT	p. 118
Going Parallel	p. 121
Multithreading	p. 122
Parallel Blinker	p. 132
What You Should Know About Multithreading	p. 136
Where Can I Go from Here?	p. 137
Recipes for Modifying a Server	p. 137
Server Versus Client? When to Push, When to Pull?	p. 143
Taking a REST	p. 144
Communities	p. 145
Other Hardware	p. 145
The Sky Is the Limit	p. 148
Test Server	p. 149
NET Classes Used in the Examples	p. 153
Gsiot.Server Library	p. 155
Index	p. 169
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