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Using COOJA for Contiki development

Fredrik Österlind Swedish Institute of Computer Science. Using COOJA for Contiki development. Co ntiki O S Ja va Simulator. Simulator for the Contiki OS Java-based, but simulates Contiki applications Support cross-level simulation Today’s focus: using COOJA

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Using COOJA for Contiki development

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

  2. Contiki OS Java Simulator • Simulator for the Contiki OS • Java-based, but simulates Contiki applications • Support cross-level simulation • Today’s focus: using COOJA • Questions/interruptions/feedback appreciated

  3. ”CoOJa” Cooya = ”Look at me!” (Jamaican broken english) • Included with Contiki • Active development for 1½ years • Compared to Contiki Netsim: • Heavier • More powerful • (More installation problems) • Uses external programs such as make, gcc, grep...

  4. OS level HW level App. level Cross-level simulation • Simulating motes at different abstraction levels. • Application (Java): • Effective • Easier to implement • OS: • Deployable code • Emulated: • Enables low-level driver development

  5. Workshop COOJA objectives • Monday: • Using COOJA • Tuesday: • Extending COOJA

  6. TODO (before lunch) • Installation/Startup • Compiling code from within COOJA • Create simulations • Basic concepts in COOJA • Using plugins to interact with motes • Adding project directories

  7. Getting started... • Need Java and Ant • contiki-2.x/tools/cooja> ant run • Start COOJA • Compilation problems • Use JNI tests to configure COOJA

  8. Design • Mote type represents the simulated software(and hardware) Mote Mote Mote type GUI Mote Mote type Simulation Mote Mote type Mote

  9. Contiki applications • Scans for applications to simulate • A few test applications available incontiki-2.x/platform/cooja • Applications are compiled the usual way> make testcooja TARGET=cooja ..... • Create a Contiki mote type

  10. Pollinterfaces Switchnode Getmemory Pollinterfaces HandleContiki event Setmemory Simulating what? • COOJA uses glue drivers to communicate with Contik • Corresponding parts in Java and Contiki COOJA platform

  11. Plugins and project directories • Main way to interact with simulations and motes • Plugin argument is: • Simulator • Simulation • Mote • COOJA needs more plugins ;)

  12. A few plugins Mote Interface Viewer Event Breaker Log Listener

  13. Interacting with the motes • Test simulated applications • Via plugins (and interfaces) • Click the button • Reload simulation • Break on (radio) events

  14. Project directories • Previously called ’user platforms’ • Adds functionality to COOJA • A directory with a configuration file • Import a simple project directory

  15. More on project directories • 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

  16. COOJA’s Radio Mediums • Currently two different alternatives (+ one silent) • Unit Disk Graph Medium (UDGM) • Multi-path Ray-tracer Medium (MRM) • Using MRM

  17. 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 • Hello-World

  18. Questions?

  19. Cross-Level simulations

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