1. A Graphical Development and Simulation Environment for TinyOS-based Wireless Sensor Networks Elaine Cheong February 13, 2007 Seventh Biennial Ptolemy Miniconference Berkeley, California

2. February 13, 2007 Elaine Cheong, UC Berkeley, Ptolemy Miniconference 2 Wireless Sensor Networks

3. February 13, 2007 Elaine Cheong, UC Berkeley, Ptolemy Miniconference 3 TinyOS and nesC configuration SenseToLeds { } implementation { components Main, SenseToInt, IntToLeds, TimerC, DemoSensorC as Sensor; Main.StdControl -> SenseToInt; Main.StdControl -> IntToLeds; SenseToInt.Timer -> TimerC.Timer[unique("Timer")]; SenseToInt.TimerControl -> TimerC; SenseToInt.ADC -> Sensor; SenseToInt.ADCControl -> Sensor; SenseToInt.IntOutput -> IntToLeds; } module SenseToInt { provides { interface StdControl; } uses { interface Timer; interface StdControl as TimerControl; interface ADC; interface StdControl as ADCControl; interface IntOutput; } } implementation {... } configuration TimerC { provides interface Timer[uint8_t id]; provides interface StdControl; } implementation { components TimerM, ClockC, NoLeds, HPLPowerManagementM; TimerM.Leds -> NoLeds; TimerM.Clock -> ClockC; TimerM.PowerManagement -> HPLPowerManagementM; StdControl = TimerM; Timer = TimerM; }

4. February 13, 2007 Elaine Cheong, UC Berkeley, Ptolemy Miniconference 4 SenseToLeds in Viptos

5. February 13, 2007 Elaine Cheong, UC Berkeley, Ptolemy Miniconference 5 Converting between nesC and MoML nc2moml  nesC component code  MoML class (Ptolemy actor) ncapp2moml  nesC application code  MoML entity (Ptolemy model)

6. February 13, 2007 Elaine Cheong, UC Berkeley, Ptolemy Miniconference 6 Generating MoML for TimerC.nc – nc2moml <!DOCTYPE plot PUBLIC "-//UC Berkeley//DTD MoML 1//EN" "http://ptolemy.eecs.berkeley.edu/xml/dtd/MoML_1.dtd">

7. February 13, 2007 Elaine Cheong, UC Berkeley, Ptolemy Miniconference 7 Generating MoML for SenseToLeds.nc – ncapp2moml... <entity name="MicaCompositeActor" class="ptolemy.domains.ptinyos.lib.MicaCompositeActor">.........

8. February 13, 2007 Elaine Cheong, UC Berkeley, Ptolemy Miniconference 8 SenseToLeds – Physical Environment

9. February 13, 2007 Elaine Cheong, UC Berkeley, Ptolemy Miniconference 9 SenseToLeds – Hardware

10. February 13, 2007 Elaine Cheong, UC Berkeley, Ptolemy Miniconference 10 SenseToLeds – Software

11. February 13, 2007 Elaine Cheong, UC Berkeley, Ptolemy Miniconference 11 PtinyOSDirector

12. February 13, 2007 Elaine Cheong, UC Berkeley, Ptolemy Miniconference 12 SenseToLeds – PhotoSource

13. February 13, 2007 Elaine Cheong, UC Berkeley, Ptolemy Miniconference 13 SenseToLeds – PhotoChannel

14. February 13, 2007 Elaine Cheong, UC Berkeley, Ptolemy Miniconference 14 SenseToLeds – WirelessDirector

15. February 13, 2007 Elaine Cheong, UC Berkeley, Ptolemy Miniconference 15 SenseToLeds – Simulation

16. February 13, 2007 Elaine Cheong, UC Berkeley, Ptolemy Miniconference 16 How it works Java (PtinyOSDirector)Java (PtinyOSLoader)C (TOSSIM) PtinyOSDirector.preinitialize() Generate nesC code, makefile, and PtinyOSLoader Java file. Run ‘make’. Compile nesC code to a TOSSIM shared object, and PtinyOSLoader Java file to a Java class file. PtinyOSDirector.initialize() Load PtinyOSLoader Java class into memory. Create instance of PtinyOSLoader class (_loader). Call Java _loader.load(). _loader.load() Load the TOSSIM shared object into memory.

17. February 13, 2007 Elaine Cheong, UC Berkeley, Ptolemy Miniconference 17 How it works (cont.) Java (PtinyOSDirector)Java (PtinyOSLoader)C (TOSSIM) PtinyOSDirector.initialize(), continued Call Java _loader.main(). _loader.main() Call JNI main_unique_name() native method. JNI main_unique_name() Call TOSSIM main(), which contains an initialization routine:  Call TOSSIM initializeSockets() Call TOSSIM ptII_startThreads()  Call JNI _loader.startThreads(). _loader.startThreads() Create Java threads. Call Java Thread.start() on each thread.

18. February 13, 2007 Elaine Cheong, UC Berkeley, Ptolemy Miniconference 18 How it works (cont.) Java (PtinyOSDirector)Java (PtinyOSLoader)C (TOSSIM) TOSSIM main() initialization routine, continued Create bootup event. Call TOSSIM ptII_queue_insert_event().  Call JNI _loader.enqueueEvent(). _loader.enqueueEvent() Call Java PtinyOSDirector.enqueueEvent(). PtinyOSDirector.enqueueEvent() Call Java Ptolemy II fireAt() on the executive director.

19. February 13, 2007 Elaine Cheong, UC Berkeley, Ptolemy Miniconference 19 SendAndReceiveCnt

20. February 13, 2007 Elaine Cheong, UC Berkeley, Ptolemy Miniconference 20 SendAndReceiveCnt

21. February 13, 2007 Elaine Cheong, UC Berkeley, Ptolemy Miniconference 21 SendAndReceiveCnt

22. February 13, 2007 Elaine Cheong, UC Berkeley, Ptolemy Miniconference 22 SendAndReceiveCnt – Simulation

23. February 13, 2007 Elaine Cheong, UC Berkeley, Ptolemy Miniconference 23 Multihop Routing – Surge

24. February 13, 2007 Elaine Cheong, UC Berkeley, Ptolemy Miniconference 24 Performance Evaluation – SenseToLeds

25. February 13, 2007 Elaine Cheong, UC Berkeley, Ptolemy Miniconference 25 Performance Evaluation – SendAndReceiveCnt

26. February 13, 2007 Elaine Cheong, UC Berkeley, Ptolemy Miniconference 26 Related Work ns-2 OPNET Modeler, OPNET Wireless Module OMNeT++, NesCT J-Sim Prowler Em*, EmTOS TOSSIM, TinyViz

27. February 13, 2007 Elaine Cheong, UC Berkeley, Ptolemy Miniconference 27 Conclusion http://ptolemy.eecs.berkeley.edu/viptos Elaine Cheong, Edward A. Lee and Yang Zhao. “Joint Modeling and Design of Wireless Networks and Sensor Node Software”, EECS Department, University of California, Berkeley, Technical Report No. UCB/EECS-2006-150, November 17, 2006.