Embedded Software Lab. @ SKKU 17 1 IoTivity. Embedded Software Lab. @ SKKU 17 2 An open source reference implementation of the OIC standard specifications.

Embedded Software Lab. @ SKKU

17

1

IoTivity


17

2

• An open source reference implementation of the OIC standard specifications– Linux Foundation Collaborative Project– Supported by Open Interconnect

Consortium(OIC)

• Goal– A new standard by which billions of wired and

wireless devices connect to each other and to the Internet

IoTivity


17

3

• Base– Discovery & Connectivity– Resource Management

• Services– Soft(Virtual) Sensor Manager– Protocol Plugin Manager– Things Manager– Notification Manager(Resource Offloading)– Control Manager(Smart Home Protocol)

• Target: Generic Linux, Tizen, Yocto, Android• Source code is managed in Gerrit review

server

IoTivity Features


17

4

• IoTivity Services– Soft Sensor, Protocol Plugin, Things,

Notification, Control Managers

• Resource API– based on OIC Resource Model– Interface between IoTivity service and base

• IoTivity Base– Abstract connectivity methods to Resource API– IoTivity base is included in service process and

application process as a library

IoTivity SW Stack


17

5

• Interface between service/app and base• Support for constrained devices

– Provide only C SDK, use only CoAP-UDP/IP protocol– ex. Arduino

IoTivity SW Stack: Resource API


17

6

• Collection – Resource – Property/Attribute

OIC Resource Model


17

7

• Behaviors on Resource Model– Finding a resource– Querying, setting and observing resource state

OIC Resource Model


17

8

• Registering a Resource– Given a service running on port 5683 in a device at IP address

192.168.1.1, – If the application registers a resource with a URI path

"/light/1", – The resulting fully qualified URI "oc://192.168.1.1:5683/light/1"

IoTivity Base Flow


17

9

• Finding a resource– returns all resources of given type on the network service

IoTivity Base Flow


17

10

• Querying resource state (GET)

IoTivity Base Flow


17

11

• Setting resource state (PUT)

IoTivity Base Flow


17

12

• Observing resource state

IoTivity Base Flow


17

13

• Provides mechanism to represent non-OIC protocols within the OIC framework

• MQTT is supported as a protocol plug-in

Service: Protocol Plug-in Manager


17

14

• Receive data from various sensors• Query-based sensor data request

Service: Soft Sensor Manager


17

15

• Group creation and finding appropriate resources in network

Service: Things Manager


17

16

• Discover controlee devices• Control controlee with Resource API• Subscription/notification functionality

– for monitoring the device operations or state changes• Runs both as client and server

Control Manager


17

17

• IoTivity is now ported on Tizen 2.3• IoTivity will be merged to Tizen– Tizen Communications Core API will provide

IoTivitiy functions.• As a part of Tizen Communications Core API

– Some IoTivity services have already been integrated:• SoftSensor Manager IoTivitiy Service

– Soft sensor functionality

• Notification Manager IoTivity Service– Notification functionality

IoTivity and Tizen

Embedded Software Lab. @ SKKU 17 1 IoTivity. Embedded Software Lab. @ SKKU 17 2 An open source reference implementation of the OIC standard specifications.

Documents