OMA LwM2M Workshop - Matthias Kovatsch, OMA LwM2M DevKit

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The OMA LWM2M DevKit Client Simulator and CoAP Implementations 1|Matthias Kovatsch

http://people.inf.ethz.ch/mkovatsc

Matthias Kovatsch

kovatsch@inf.ethz.ch

The OMA LWM2M DevKit Client Simulator

and CoAP Implementations

Wednesday, 29 Jan 2015OMA LWM2M Workshop

Düsseldorf, Germany

The OMA LWM2M DevKit

LWM2M Protocol Handling in the Web Browser

Interactive LWM2M Client in the Web Browser

OMA LWM2M DevKit Live LWM2M Server

LWM2M Client support

8 OMA-label Objects with descriptions

Registration Interface

Device Management and Service Enablement Interface

Information Reporting Interface

Visualization of LWM2M operations and CoAP messages

Interactive guide

Status of Version 0.5.x

Getting Started

Launcher button Browser addressbar

URI scheme: coap+lwm2m

Organization of the GUI

Interactive Guide

https://addons.mozilla.org/firefox/addon/oma-lwm2m-devkit/

https://github.com/OpenMobileAlliance/OMA-LWM2M-DevKit

Installing the Source Code

chrome/

content/

copper/

lwm2m/

main.xul

main.js

clients/

components/

defaults/

objects/

chrome.manifest

install.rdf

“chrome you put on the bare metal”

GUI and scripts (“active parts”)

CoAP implementation scripts

LWM2M implementation scripts

GUI layout (also loads scripts)

start script (onload)

CSS and images

loadable LWM2M Clients (JSON)

protocol handler (registered for coap+lwm2m)

initial registry values (about:config)

LWM2M Object definitions (JSON)

manifest

metadata (name, version, icon, …)

Extending the Source Code

chrome/content/lwm2m/

CoapHandlers.js

ClientHandler.js

EncodingJSON.js

EncodingTLV.js

Helpers.js

InterfaceDeviceManagement.js

InterfaceInformationReporting.js

InterfaceRegistration.js

Launcher.js

Logger.js

Tooltips.js

message callbacks

LWM2M Client functions

LWM2M JSON

LWM2M TLV

helper functions

Device Management

Information Reporting

Registration

launcher button functions

logging and debugging

interactive guide

Extending the Source Code

E-mail

kovatsch@inf.ethz.ch

Github issueshttps://github.com/OpenMobileAlliance/OMA-LWM2M-DevKit/issues

Feedback, please

Custom LWM2M Clients and Objects

Integration with the LWM2M Editor

Common JSON format?

Leshan Ddf2json converter, ARM server configuration, …

LWM2M Server support

For DevKit Client when offline or no sandbox available

For other LWM2M Clients through Server Initiated Bootstrap

Outlook for Version 1.0

CoAP Implementations

http://coap.technology/

Copper (Cu) CoAP user-agent

CoAP protocol handler

for Mozilla Firefox

Browsing and bookmarking

of CoAP URIs

Interaction with resource like

RESTClient or Poster

3-Clause BSD

Copper (Cu) CoAP user-agent

https://addons.mozilla.org/firefox/addon/copper-270430/

Embedded CoAP Web server

for Contiki OS

Memory footprint

ROM < 10 KiB (… 3 – 4 KiB)

RAM < 1.5 KiB

POSIX ports exist

(e.g., Wakaama)

3-Clause BSD

Erbium (Er) REST Engine

https://github.com/contiki-os/contiki

CoAP library (no framework)

POSIX compatible

Port for TinyOS (CoapBlip)

Larger memory footprint

than Erbium

2-Clause BSD + GPLv2

libcoap

http://libcoap.sourceforge.net/

CoAP for Node.js

Modeled after the html module

MIT license

node-coap

https://github.com/mcollina/node-coap

Java CoAP framework

at the Eclipse Foundation

For the service backend

Very high throughput

DTLS 1.2 implementation

Basis for Leshan

EPL + EDL

Californium (Cf) CoAP framework

http://www.eclipse.org/californium/

Questions?

Matthias Kovatsch https://github.com/mkovatsc/

kovatsch@inf.ethz.ch http://people.inf.ethz.ch/mkovatsc/

OMA LwM2M Workshop - Matthias Kovatsch, OMA LwM2M DevKit

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