End-to-end IoT solutions with Java and the Eclipse IoT stack

End-to-end IoT solutions

with Java and the

End-to-end IoT?

1. Sensors/Actuators

➔ Sense the physical environment ➔ Act on it

1. Sensors/Actuators

➔ Sense the physical environment ➔ Act on it

That was

easy, eh?

1. Sensors/Actuators

➔ Manipulate sysfs directly

➔ Use Pi4J to have full support of GPIO/I2C/SPI

Sensors/Actuators

➔ Pi4J – http://pi4j.com

✓ Complete access to GPIOs/I2C/SPI

✓ Very mature codebase, based on WiringPi ✓ Support for popular shields (PiFace,

Gertboard, …)

Pi4J in action

Gp o on o e p o Gp oFa o . e Ins an e();

Gp oP nD a Ou pu p n p o.p o s onD a Ou pu P n(

Rasp P n.GPIO_01, "M LED", P nS a e.HIGH);

Th ead.s eep(5000);

p n. ow();

Th ead.s eep(5000);

p n. o e();

Gateway

Connect

sensors to the world and software running at Manage the hardware the edge

Connect?

➔ CoAP

✓ « HTTP over UDP »

✓ Expose your device as a resource to the Internet of Things

➔ MQTT

✓ Publish/Subscribe model

CoAP: The web-of-things

Eclipse Californium

➔ Focus on scalability and usability ➔ To be used in IoT cloud servers or

M2M/IoT devices running Java ➔ Includes DTLS implementation

(Scandium),

Californium 101

oapSe e , oapResou e, oapEx han e

1. Implement custom resources (extend oapResou e)

2. Add resources to the CoAP server 3. Start the server

Californium 101

mpo s a o .e pse. a o n um. o e. oap. oAP.Response ode.*; // sho u s pub ass M Resou e ex ends oapResou e {

@O e de

pub o d hand eGET( oapEx han e ex han e) {

ex han e. espond("he o wo d"); // ep w h 2.05 pa oad ( ex /p a n)

}

@O e de

pub o d hand ePOST( oapEx han e ex han e) {

ex han e.a ep (); // ma e a sepa a e esponse

(ex han e. e Reques Op ons() ...) {

// do some h n spe o he eques op ons

}

ex han e. espond( REATED); // ep w h esponse ode on (sho u )

} }

MQTT: Publish & Subscribe

Eclipse Paho

➔ Open-source MQTT clients ➔ Pick your language!

✓ Java

✓ JavaScript

✓ C/C++, Objective C

Paho 101 (Java)

Mq en new Mq en (" p:// o .e pse.o :1883",

Mq en . ene a e en Id()); mq en .se a ba (new Mq a ba () {

@O e de

pub o d messa eA ed(S n op , Mq Messa e messa e) h ows Ex ep on { // p o ess e e ed messa e // ... } }); mq en . onne ();

MQTT brokers

➔ Eclipse Mosquitto

✓ C implementation

✓ Scalable (1000 clients == 3MB RAM)

➔ Eclipse Moquette

✓ Java implementation

Manage?

➔ Gateway itself

✓ wireless modem, firewall, …

➔ Applications

✓ Install/Uninstall software packages ✓ Start/Stop applications

➔ Sensors

Java VM

OSGi Application Container

Device Abstraction Gateway Basic Services

Network Configuration

Network Management Field Protocols Connectivity and Delivery

Administration GUI

Operation & Management

Linux Hardware

App 1 App 2 _{. . . .} App n

Applications

Installing Kura

d ~

sudo ap - e upda e

w e h ps://s3.amazonaws. om/ u a_down oads/ aspb an/ e ease/1.1.0/ \

u a_1.1.0_ aspbe -p _a m 6.deb

sudo dp - u a_1.1.0_ aspbe -p _a m 6.deb

sudo ap - e ns a

First steps with Kura

➔ Network management

✓ Cellular Modem, WiFi ✓ Firewall

✓ NAT

➔ OSGi and system administration

Kura API

➔ OSGi services that you can re-use in your own components

✓ _{o Se e}

✓ Da aSe e, oudSe e

✓ _{p oSe e (AES, base64, SHA-1)} ✓ Pos onSe e (geolocation)

Practical example: Greenhouse

➔ A Senso Se e implementation leveraging Pi4J

for GPIO/I2C

➔ A configurable G eenhousePub she component that:

✓ consumes a Senso Se e (GPIO manipulation)

✓ consumes a Da aSe e (MQTT communication)

✓ exposes a Senso han edL s ene (be notified of external GPIO updates)

Talk is cheap…

And how about CoAP?

➔ Californium can easily be embedded in a Kura bundle

➔ Another OSGi component can:

✓ consume the Senso Se e ✓ expose CoAP resources

End-user interaction

➔ JavaFX Charts ➔ Eclipse BIRT

➔ Smartphone app (e.g Android)

✓ https://www.eclipse.org/paho/clients/android

➔ MQTT + WebSockets = ♡

If you had to remember only 3 things...

Kura is awesome! Go download it now! http://eclipse.org/kura

If you had to remember only 3 things...

Build your own greenhouse & follow the tutorial

http://iot.eclipse.org/java/tutorial

If you had to remember only 3 things...

Eclipse Open IoT Stack for Java is much more than Kura

http://iot.eclipse.org/java

Thank you! Questions?

[email protected]

@kartben