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4 th SDL and MSC Workshop SAM’04 Ottawa 1st-4th June 2004

4 th SDL and MSC Workshop SAM’04 Ottawa 1st-4th June 2004. Alkiviadis Yiannakoulias NTUA ayian@telecom.ece.ntua.gr. Presentation Layout. Design issues Top level system design Use of tool chain (SAFIRE) Implementation Testing / Validation Documentation Demonstration Summary.

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4 th SDL and MSC Workshop SAM’04 Ottawa 1st-4th June 2004

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  1. 4th SDL and MSC Workshop SAM’04 Ottawa1st-4th June 2004 Alkiviadis Yiannakoulias NTUA ayian@telecom.ece.ntua.gr

  2. Presentation Layout • Design issues • Top level system design • Use of tool chain (SAFIRE) • Implementation • Testing / Validation • Documentation • Demonstration • Summary

  3. Design issues

  4. Design issues (Contd.) • The door is allowed to be open for a maximum period, once the correct code is entered (Max_Open_Duration_Tmr). • An alarm is generated when the door is not closed within the allowed time. • Time to open or close the door has a maximum value (Transition_Tmr). • Solenoid aborts releasing of lock procedure if door is not moving within the allowed time (Guard_Tmr).

  5. Design issues (Contd.) • Time is always displayed in the console. • ACS Commands: • Stay Open: Allow door to be open for longer. Information needed: • Time (HH:MM), • Access Code • Close Now: 15 seconds to close door • Supervisor mode

  6. Supervisor Mode Commands • Double-check safety procedure, • Change supervisor code, • Statistics for: • #Times door open outside, • #Times door open inside, • When was last opened and how long • Set time, • Exit.

  7. Design issues (Contd.) • Use of query mechanism to get door state, for controller state transitions • Reduce number of states • Data Hiding • Reset procedure initializes configuration parameters and ACK completion • Improve testability

  8. Top-Level Design DOOR_BT

  9. Top-Level Design

  10. Solenoid Process

  11. ACS Process

  12. ACS Process (Contd.)

  13. Door Process

  14. Design summary • Clear organization • Hierarchical structure • Data hiding • Use of types • Reuse of design information • Simple language elements

  15. Documentation of Test Harness

  16. Test harness (UI)

  17. Test harness (SIM)

  18. Documentation of Test Suite / Test Purposes

  19. Test Case Sample (Door_Opening_TC)

  20. Test Case Sample (Contd.)

  21. Test Report

  22. Test Report

  23. System Execution Trace

  24. Summary of results • All test scenarios executed (PASS) • Test coverage • All main transitions: timeouts and normal behavior • Each transition has been tested independently • Assumes no interaction between transitions (reasonable as no global variables)

  25. Conclusions • Maximum usage of tool chain has minimized the effort for: • Design, Testing, Documentation • Interesting challenge on how to keep design simple and use all the tool features to maximize automation

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