Eclipse IoT provides a complete Java stack to build IoT gateway applications, including support for MQTT, CoAP, LWM2M, and remote configuration and management via Kura and OSGI. With the programming tool Reactive Blocks you can connect these Eclipse technologies by plugging together Java-based building blocks graphically. This makes it much easier to build new applications, or understand and adapt existing ones. This talk shows you how we implemented the software for the Eclipse IoT Car. The demo takes advantage of MQTT, CoAP and Kura so you can experience these technologies in action.

1. March 2012 - Business Confidential - Bitreactive AS
Building Applications with
Eclipse IoT, Block by Block
Anne Nevin
Bitreactive AS, Trondheim
Eclipse DemoCamp Trondheim
August 27th. 2015

2. Bitreactive
■ Founded June 2011, spinoff from NTNU
■ Delivers the software development tool Reactive Blocks which provides
specific solutions to the programming challenges of the IoT industry.
Jone S. Rasmussen
General Manager
M: +47 957 26 339
E: jone@bitreactive.com
www.bitreactive.com
Frank Alexander Kraemer
Technology Manager
M: +47 959 28 555
E: frank@bitreactive.com
www.bitreactive.com
Anne Nevin
Sales
M: +47 930 07
E: anne@bitre
www.bitreactive
Kathrin Winkler
System Architect
M: +4747914350
E: kathrin@bitreactive.com
www.bitreactive.com
Ole Budde
System Architect
M: +47 406 32 522
E: ole@bitreactive.com
www.bitreactive.com
Linda Ariani Gunawan
System Architect
M: +47 463 92 572
E: linda@bitreactive.com
www.bitreactive.com
Alina Isaksen
System Architect
M: +47 980 28 536
E: alina@bitreactive.com
www.bitreactive.com

3. Cloud
Gateway
Make data smart with intelligent gateways

4. Cloud
Gateway
It is difficult to implement IoT gateway solutions
• Tie together hardware and network resources
• Different standards and legacy systems
• Manage connectivity and network issues
• Device management
• Autonomous operation
• Integrate data with existing enterprise systems and databases

6. Reactive Blocks
6
CoAP Resource
ok
getResponse
init
failed
get
post
Config Listener
initConfig
start
updatedConfig
Kura CloudClient
readypublish
start
stop
waiting
stopped
failed
msgArrived
MQTT Core
initOksubscribe
init
initFailed
publishOk
message
error
stopped
disconnected
unsubscribe
publish
stop
RPi GPIO Digital In
valuestop
init
initError
initOk
isLow
isHigh
stopped
read
initPS
Config Listener
initConfig
start
updatedConfig
playing
Modbus
initOkexecutedReadIn
init
initFailed
readDone
writeDone
readFailed
stopped
writeFailed
deviceId
executedWrite
stop
executeReadHold
registerId
1 2 3
Config Listener
initConfig
start
updatedConfig
Makes it easy to combine Eclipse technologies to make new applications

7. Cloud
Gateway
JVM
A 1 A 2 A 3

8. Cloud
Gateway
JVM
A 1 A 2 A 3
App App

9. Kura is a Java/OSGi-based container for remote
management and control
MQTT is a lightweight messaging protocol based
on the publish/subscribe model. PAHO provides
the MQTT client implementation.
CoAP (constrained application protocol) is a RESTful
protocol, like HTTP over UDP. Californium
implements the CoAP standard in Java

10. The Raspberry Pi Eclipse IoT Car
Use a remote console to move the car
around in different directions
Publish pictures to an MQTT server
for remote viewing
Configure the proximity limit at
runtime
Kura
MQTT
CoAP

11. 11
Air VentilationMotor
Control
Battery
WiFi
dongle
Distance
sensor
Camera

12. 12
This is the top level of
the application

13. 13
Inside the MQTT
interface block. It is
composed of 5 blocks
from the library of
block

14. 14
The CoAP interface
block interacts wih the
front-end application
via CoAP server

15. 15
Server Client
The front end
application used to vie
and interact with the
data was also
implemented with
Reactive Blocks. We
used Java Swing.

16. 16
Inside the CoAP
interface block which
is composed of 6 block
from the library of
blocks

17. 17

18. 18
The motor control is
composed of 4 blocks
from the library of
blocks

19. 19

20. 20
proximity limit
The proximity detector
is composed of 3
blocks from the library
of blocks

21. 21
Config listener: Listens
to changes in the
configuration property
Proximity limit.
At runtime this
property can be seen
and set via the Kura´s
web-console

22. 22

23. Manually written code
Reusable code
Generated code
~98%
~2%
+ Runtime

24. 24
Generic Functionality
■ Buffering
■ Counters
■ Flow Logic
■ Session Utilities
■ Iterator
Timers
■ Timers
■ Periodic Timers
■ Watchdogs
Application Prototyping
■ Java Swing
■ Java FX
■ Speech (Free TTS)
■ Properties
Hardware Connections
■ Modbus
■ Serial I/O
■ Raspberry Pi GPIO
■ Berryclip for Raspberry Pi
■ Gertboard for Raspberry Pi
■ USB Camera
Files
■ Files Utilities
■ File I/O
■ Properties
End-User Communication
■ SMS: Twilio, Keyteq, Clickatell
■ Email
■ CMPP Client (Smack)
Communication
■ HTTP/HTTPS
■ MQTT
■ CoAP
■ JSON-RPC
■ AMQP
■ Network Monitoring
■ OPC-UA
Data Collection Services
■ Sierra Wireless AirVantage
■ IBM IoT Foundation
■ Eurotech ESF
■ Xively
■ Solair
Security
■ Cryptography
■ OAuth 2.0
Transformation of Data
■ GSON
■ XML Parsing (DOM4J)
■ XSL Transformation
Eclipse Kura and OSGi
■ Configuration Listener
■ Cloud Client Handler
■ Event Admin
■ Service Tracker
■ Termination
■ Service Register
Location
■ Geofence
■ KML
Data Processing
■ Video Recording
■ Image Processing
Not just a tool but also a growing library of ready-to-use
building blocks