Programming the Internet of Things

Foreword
Preface
Who Is This Book For?
To the Programmer
To the Instructor
To the Technology Manager or Executive
What Do I Need to Know?
How Is This Book Arranged?
Part I, Getting Started
Part II, Connecting to the Physical World
Part III, Connecting to Other Things
Part IV, Connecting to the Cloud
Some Background on the IoT
Complexity Redefined
Creating Value
Living on the Edge
Conclusion
Conventions Used in This Book
Using Code Examples
O’Reilly Online Learning
How to Contact Us
Acknowledgments

I. Getting Started
1. Getting Started
What You’ll Learn in This Chapter
Defining Your System
Breaking Down the Problem
Defining Relevant Outcomes
Architecting a Solution
Setting Up Your Development and Test Environment
Step I: Prepare Your Development Environment
Step II: Define Your Testing Strategy
Step III: Manage Your Design and Development Workflow
Thoughts on Automation
Programming Exercises
Testing the Constrained Device App
Testing the Gateway Device App
Conclusion

2. Initial Edge Tier Applications
What You’ll Learn in This Chapter
Design Concepts
Tracking Your Requirements
Programming Exercises
Add System Performance Tasks to the Constrained Device Application
Add System Performance Tasks to the Gateway Device Application
Additional Exercises
Conclusion

II. Connecting to the Physical World
3. Data Simulation
What You’ll Learn in This Chapter
Simulating Sensors and Actuators
Generating Simulated Data Using a Sensor Data Generator Class
Programming Exercises
Integrating Sensing and Actuation Simulation Within Your Application Design
Representing Sensor and Actuator Data Within the Application
Create Data Containers to Support Data Collection and Actuation
Simulating Sensors
Simulating Actuators
Connecting Simulated Sensors with the Sensor Adapter Manager
Connecting Simulated Actuators with the Actuator Adapter Manager
Create and Integrate the Device Data Manager
Additional Exercises
Hysteresis Management
Conclusion

4. Data Emulation
What You’ll Learn in This Chapter
Emulating Sensors and Actuators
Setting Up and Configuring an Emulator
The Sense-Emu Sense HAT Emulator
Programming Exercises
Integrating Sensing and Actuation Emulation Within Your Application Design
Emulating Sensors
Emulating Actuators
Connecting Emulated Sensors with the Sensor Adapter Manager
Connecting Emulated Actuators with the Actuator Adapter Manager
Additional Exercises
Threshold Management
Conclusion

5. Data Management
What You’ll Learn in This Chapter
Data Translation and Management Concepts
Programming Exercises
Data Translation in the Constrained Device App
Data Translation in the Gateway Device App
Additional Exercises
Proactive Disk Utilization Management
Conclusion

III. Connecting to Other Things
6. MQTT Integration–Overview and Python Client
What You’ll Learn in This Chapter
About MQTT
Connecting to a Broker
Message Passing
Control Packets and the Structure of an MQTT Message
Adding MQTT to Your Applications
Installing and Configuring an MQTT Broker
Programming Exercises
Create the MQTT Connector Abstraction Module
Add Callbacks to Support MQTT Events
Add Publish, Subscribe, and Unsubscribe Functionality
Integrate the MQTT Connector into Your CDA
What About Security?
Additional Exercises
Conclusion

7. MQTT Integration–Java Client
What You’ll Learn in This Chapter
Programming Exercises
Create the MQTT Connector Abstraction Module
Add Callbacks to Support MQTT Events
Add Publish, Subscribe, and Unsubscribe Functionality
Integrate the MQTT Connector into Your GDA
What About Security and Overall System Performance?
Additional Exercises
Subscriber Callbacks
CDA to GDA Integration
Conclusion

8. CoAP Server Implementation
What You’ll Learn in This Chapter
About CoAP
Client to Server Connections
Request Methods
Message Passing
Datagram Packets and the Structure of a CoAP Message
Putting It All Together
Programming Exercises
Add CoAP Server Functionality to the Gateway Device Application
Add CoAP Server Functionality to the Constrained Device Application (Optional)
Additional Exercises
Add More Resource Handlers
Add a Custom Discovery Service
Add Dynamic Resource Creation
Conclusion

9. CoAP Client Integration
What You’ll Learn in This Chapter
Concepts
Programming Exercises
Add CoAP Client Functionality to the Constrained Device Application
Add CoAP Client Functionality to the Gateway Device App (Optional)
Additional Exercises
Add a Robust OBSERVE Cancel Feature
Add Support for DELETE and POST
Conclusion

10. Edge Integration
What You’ll Learn in This Chapter
Concepts
Security Exercises
Adding TLS Support to Your MQTT Broker
Add Security Features to Your Gateway Device App MQTT Client Connector
Add Security Features to Your Constrained Device App MQTT Client Connector
Functional Exercises
Adding Business Logic to the Gateway Device App
Adding Business Logic to the Constrained Device App
Performance Testing Exercises
Additional Exercises
Add DTLS Support to Your CoAP Client and Server
Conclusion

IV. Connecting to the Cloud
11. Integrating with Various Cloud Services
What You’ll Learn in This Chapter
Concepts
Programming Exercises
Add the Cloud Client and Other Related Components
Integrating with an IoT Cloud Service Provider (CSP)
Ubidots Connectivity Overview Using MQTT
AWS IoT Core Connectivity Overview Using MQTT
Additional Exercises
Analyzing and Acting on Time-Series Performance Data
Conclusion

12. Taming the IoT
What You’ll Learn in This Chapter
IoT Ecosystem Enablers
Sample IoT Use Cases
Shared Enablers and a Common Notional Design
Use Case 1: Home Environment Monitoring and Temperature Adjustment
Use Case 2: Garden Monitoring and Water Adjustment
Use Case 3: Pond Quality Monitoring
Conclusion

A. Design Road Maps
Part I, Getting Started—Design Road Maps
Chapter 1 Designs
Chapter 2 Designs

Part II, Connecting to the Physical World—Design Road Maps
Chapter 3 Design
Chapter 4 Design
Chapter 5 Designs

Part III, Connecting to Other Things—Design Road Maps
Chapter 6 Design
Chapter 7 Design
Chapter 8 Designs
Chapter 9 Designs
Chapter 10 Designs

Part IV, Connecting to the Cloud—Design Road Maps
Chapter 11 Designs

Bibliography
Index