Workshop07cooja Intro

Using COOJA for Contiki development Fredrik Österlind Swedish Institute of Computer Science

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Using COOJA for Contiki development Fredrik Österlind

Contiki OS Java Simulator

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Simulator for the Contiki OS

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Java-based, but simulates Contiki applications

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Support cross-level simulation

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Today’s focus: using COOJA

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Questions/interruptions/feedback appreciated

Using COOJA for Contiki development Fredrik Österlind

”CoOJa” Cooya = ”Look at me!” (Jamaican broken english) ●

Included with Contiki

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Active development for 1½ years

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Compared to Contiki Netsim:

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Heavier

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More powerful

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(More installation problems)

Uses external programs such as make, gcc, grep... Using COOJA for Contiki development Fredrik Österlind

Cross-level simulation Simulating motes at different abstraction levels. OS level

Application (Java): ●

Effective

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Easier to implement

HW level

OS: ●

Deployable code

Emulated: ●

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Enables low-level driver development Using COOJA for Contiki development Fredrik Österlind

App. level

Workshop COOJA objectives Monday: Using COOJA

Tuesday: Extending COOJA

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Using COOJA for Contiki development Fredrik Österlind

TODO (before lunch) ●

Installation/Startup ●

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Compiling code from within COOJA

Create simulations ●

Basic concepts in COOJA

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Using plugins to interact with motes

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Adding project directories

Using COOJA for Contiki development Fredrik Österlind

Getting started... ●

Need Java and Ant ●

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Start COOJA

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Compilation problems ●

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contiki-2.x/tools/cooja> ant run

Use JNI tests to configure COOJA

Using COOJA for Contiki development Fredrik Österlind

Design ●

Mote type represents the simulated software (and hardware) Mote Mote

Mote type GUI

Mote Simulation

Mote type

Mote type

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Mote

Mote

Using COOJA for Contiki development Fredrik Österlind

Contiki applications ●

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Scans for applications to simulate

A few test applications available in contiki-2.x/platform/cooja

Applications are compiled the usual way > make testcooja TARGET=cooja .....

Create a Contiki mote type

Using COOJA for Contiki development Fredrik Österlind

Simulating what? ●

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COOJA uses glue drivers to communicate with Contik Corresponding parts in Java and Contiki COOJA platform Poll interfaces

Switch node

Get memory

Poll interfaces Handle Contiki event

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Set memory Using COOJA for Contiki development Fredrik Österlind

Plugins and project directories ●

Main way to interact with simulations and motes

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Plugin argument is:

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Simulator

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Simulation

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Mote

COOJA needs more plugins ;)

Using COOJA for Contiki development Fredrik Österlind

A few plugins Mote Interface Viewer

Event Breaker

Log Listener

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Using COOJA for Contiki development Fredrik Österlind

Interacting with the motes

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Test simulated applications

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Via plugins (and interfaces) ●

Click the button

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Reload simulation

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Break on (radio) events

Using COOJA for Contiki development Fredrik Österlind

Project directories

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Previously called ’user platforms’

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Adds functionality to COOJA

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A directory with a configuration file

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Import a simple project directory

Using COOJA for Contiki development Fredrik Österlind

More on project directories ●

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Can be used for much more than adding applications to simulate! Interfaces, plugins, applications, mote types, radio mediums...

Examples available in: contiki-2.x/tools/cooja/examples

Preview of emulated mote

Using COOJA for Contiki development Fredrik Österlind

COOJA’s Radio Mediums

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Currently two different alternatives (+ one silent)

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Unit Disk Graph Medium (UDGM)

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Multi-path Ray-tracer Medium (MRM)

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Using MRM

Using COOJA for Contiki development Fredrik Österlind

Quick-starting COOJA The usual way is via: contiki-2.x/tools/cooja/> ant run

Shortcut that fits nicely into Contiki development: yourapp/> make myapp TARGET=cooja

Creates a typical simulation and starts a few plugins

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Hello-World Using COOJA for Contiki development Fredrik Österlind

Questions?

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Using COOJA for Contiki development Fredrik Österlind

Cross-Level simulations

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Using COOJA for Contiki development Fredrik Österlind