IoTivity Core Framework: Features & Opportunities Kishen Maloor - - PowerPoint PPT Presentation

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IoTivity Core Framework: Features & Opportunities Kishen Maloor - - PowerPoint PPT Presentation

Feb 12, 2023 45 likes •309 views

IoTivity Core Framework: Features & Opportunities Kishen Maloor Intel Open Source Technology Center iCDG - Intel Communication and Devices Group Outline What is IoTivity and why is it useful? IoTivity stack architecture IoTivity

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iCDG - Intel Communication and Devices Group

Kishen Maloor Intel Open Source Technology Center

IoTivity Core Framework: Features & Opportunities

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iCDG - Intel Communication and Devices Group

Outline

  • What is IoTivity and why is it useful?
  • IoTivity stack architecture
  • IoTivity resource model and request-response

flow

  • Role in the IoT ecosystem
  • Cross-platform support
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iCDG - Intel Communication and Devices Group

What is IoTivity?

  • Open source framework and

SDK for building IoT applications

  • Independently governed
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iCDG - Intel Communication and Devices Group

Why is it useful?

Turn Lights ON Light bulbs with BLE radios

75F

75F

Smart TV Digital Thermostat Regulate Temperature Tablet Smartphone Notify Current Setting

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iCDG - Intel Communication and Devices Group

Why is it useful?

  • Cross-platform support
  • Uniform and easy-to-use APIs
  • Based on open standards
  • Support for multiple connectivity types
  • Extensible to support proprietary protocols
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iCDG - Intel Communication and Devices Group

IoTivity stack architecture

Connectivity Abstraction Secure Resource Manager Resource Model Base Functionality (C API)

Services Layer

Object Model (C++ API) JNI Glue Layer (Java API)

Smart Home Health Automotive Industrial Enterprise

…..

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iCDG - Intel Communication and Devices Group

OIC protocol & connectivity types

  • Messaging protocol
  • Currently based on CoAP (RFC 7252)
  • OIC payloads encoded using CBOR (RFC 7049)
  • Adapter abstraction
  • Handle multiple connectivity types
  • Dual-stack IPv4 / IPv6
  • Bluetooth Low Energy using GATT
  • Bluetooth EDR using RFCOMM
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iCDG - Intel Communication and Devices Group

IoTivity resource model

OIC Client OIC Server OIC Server OIC Client OIC Intermediary

Model 1 Model 2

  • RESTful design -> Things modeled as resources
  • Server role: Exposes hosted resources
  • Client role: Accesses resources on a server
  • Intermediary role: Bridges messaging between client

and server

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iCDG - Intel Communication and Devices Group

Resource URI rt: Resource Type if: Resource Interface prop: Policy n: Resource Name … …

Common Properties Resource Specific

Identifies the type of resource List of interfaces associated with the resource Policy associated with resource: discoverable,

  • bservable, secure, etc

Friendly name Resource URI :/a/light1 rt: oic.ex.light if: oic.if.rw prop: discoverable,

  • bservable

n: myHallWayLight State: 0 (OFF) Dim Level: 0 Resource URI :/a/fan1 rt: oic.ex.fan if: oic.if.rw prop: discoverable n: myKitchenFan State: 1 (ON) Speed: 10

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iCDG - Intel Communication and Devices Group

“Well-Known” resources

Functionality Fixed URI Discovery /oic/res Device /oic/d Platform /oic/p Presence /oic/ad Security …

Examples of OIC devices are thermostats or AC /oic/p /oic/res /oic/d /oic/ad /oic/res /oic/d /oic/ad OIC Device 1 OIC Device 2

  • Resources are associated with “Entity Handlers”
  • Execute OIC methods on resources
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iCDG - Intel Communication and Devices Group

Resource collections

  • Links to other resources (RFC 5988)
  • Express hierarchy, groups, indexes

Room /a/room Light /a/light/1 Light /a/light/2 Light /a/light/3

Collection URI rt: Resource Type if: Resource Interface

prop: Resource Properties

n: Resource Name links: [Other resource URI]

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iCDG - Intel Communication and Devices Group

IoTivity request-response flow

Application Resource Model CoAP over UDP L2 Connectivity + IP Application Resource Model CoAP over UDP L2 Connectivity + IP Server Client

EH

URI: /a/light; rt = ‘oic.ex.light’, if = ‘oic.ex.rw’, prop = discoverable,

  • bservable
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iCDG - Intel Communication and Devices Group

Resource discovery

Application Resource Model CoAP over UDP L2 Connectivity + IP Application Resource Model CoAP over UDP L2 Connectivity + IP Server 192.168.1.1 Client 192.168.1.2

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IPv4 224.0.1.187: 5683 IPv6 FF0X::FD: 5683

Multicast GET coap://224.0.1.187:5683/oic/res Unicast response [URI: /a/light; rt = ‘oic.ex.light’, if = ‘oic.ex.rw’, prop = discoverable, observable]

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iCDG - Intel Communication and Devices Group

GET operation

Application Resource Model CoAP over UDP L2 Connectivity + IP Application Resource Model CoAP over UDP L2 Connectivity + IP Server 192.168.1.1 Client 192.168.1.2

EH

Unicast GET coap://192.168.1.1:9000/a/light Unicast response [URI: /a/light; state = 0, dim = 0]

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iCDG - Intel Communication and Devices Group

PUT operation

Application Resource Model CoAP over UDP L2 Connectivity + IP Application Resource Model CoAP over UDP L2 Connectivity + IP Server 192.168.1.1 Client 192.168.1.2

EH

Unicast PUT coap://192.168.1.1:9000/a/light PayLoad: [state=1;dim=50] Unicast response Status = Success

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iCDG - Intel Communication and Devices Group

OBSERVE operation

Application Resource Model CoAP over UDP L2 Connectivity + IP Application Resource Model CoAP over UDP L2 Connectivity + IP Server 192.168.1.1 Client 192.168.1.2

EH

Unicast GET coap://192.168.1.1:9000/a/light; ObserveFlag = 1 Unicast response [URI: /a/light; state = 1, dim = 50]

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iCDG - Intel Communication and Devices Group

OBSERVE notification

Application Resource Model CoAP over UDP L2 Connectivity + IP Application Resource Model CoAP over UDP L2 Connectivity + IP Server 192.168.1.1 Client 192.168.1.2

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Notify Observers [URI: /a/light; state = 0, dim = 0, sequence #: 1]

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iCDG - Intel Communication and Devices Group

PRESENCE: “Active discovery”

  • Servers can advertise themselves to clients
  • Clients can request unicast or multicast notifications
  • Server coming online
  • Server going off-line
  • Changes to resources
  • Clients may indicate interest in specific resource

types

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iCDG - Intel Communication and Devices Group

Notable IoTivity features

  • Discovery
  • Messaging and data model
  • Message switching
  • Remote access
  • Services
  • Protocol plug-ins
  • Group management
  • Security
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iCDG - Intel Communication and Devices Group

Role in the IoT ecosystem

service #2 domain service #1 domain

Local Control Remote Control Server to Server

Industrial Smart Home Healthcare

…

Vertical Profiles IoTivity Framework Connectivity

Controller Controller Cloud Servers Cloud Servers Things LE

Connectivity Abstraction IoTivity Base & Services

IoT Application

IoTivity Application

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iCDG - Intel Communication and Devices Group

Cross-platform support

  • Linux (Ubuntu 12.04)
  • Arduino: Due, ATMega 2560
  • Android
  • Tizen
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iCDG - Intel Communication and Devices Group

Embedded support: Yocto Project

  • http://www.yoctoproject.org/
  • Hosted at the Linux Foundation
  • Create customized OS images for embedded targets
  • Ready-to-use BSPs for multiple platforms
  • Supports major CPU architectures
  • Layers and recipes
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iCDG - Intel Communication and Devices Group

meta-oic software layer for Yocto

  • git://git.yoctoproject.org/meta-oic

Samples

  • Resource and Service layer samples

IoTivity

  • APIs
  • Service layer
  • Resource Model
  • Base Framework

Dependencies

  • Kernel Configuration
  • Protocols
  • Middleware
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iCDG - Intel Communication and Devices Group

Constrained peripherals

  • Storage and memory constraints
  • Lightweight IoTivity server stack
  • Base framework, resource model, messaging
  • Work in progress…
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iCDG - Intel Communication and Devices Group

How can you participate?

  • Adopt IoTivity as the framework of choice for IoT

projects

  • Contribute to the IoTivity project: www.iotivity.org
  • IoTivity mailing list: iotivity-dev@lists.iotivity.org
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iCDG - Intel Communication and Devices Group

Thanks for your time! Q&A