1. TE-MPE-TM meeting 09/10/2014, Jaromir Ludwin, IFJ-PAN, Kraków The ELQA LabVIEW Application Framework or how to become a successful test system developer

2. TE-MPE-TM meeting 09/10/2014, Jaromir Ludwin, IFJ-PAN, Kraków Outline Quick LabVIEW introduction Typical design patterns and application architectures ELQA Application Framework Examples Nothing about Actor Framework in this presentation

3. TE-MPE-TM meeting 09/10/2014, Jaromir Ludwin, IFJ-PAN, Kraków What is LabVIEW from ni.com: LabVIEW System Design Software LabVIEW software is ideal for any measurement or control system. (…) LabVIEW is a development environment (…) The most important thing: Graphical, data driven programming

4. TE-MPE-TM meeting 09/10/2014, Jaromir Ludwin, IFJ-PAN, Kraków 2 minute LabVIEW course

5. TE-MPE-TM meeting 09/10/2014, Jaromir Ludwin, IFJ-PAN, Kraków 2 minute LabVIEW course

6. TE-MPE-TM meeting 09/10/2014, Jaromir Ludwin, IFJ-PAN, Kraków 2 minute LabVIEW course

7. TE-MPE-TM meeting 09/10/2014, Jaromir Ludwin, IFJ-PAN, Kraków LabVIEW state machine

8. TE-MPE-TM meeting 09/10/2014, Jaromir Ludwin, IFJ-PAN, Kraków LabVIEW queued message handler

9. TE-MPE-TM meeting 09/10/2014, Jaromir Ludwin, IFJ-PAN, Kraków JKI - String-Based Queued State Machine

10. TE-MPE-TM meeting 09/10/2014, Jaromir Ludwin, IFJ-PAN, Kraków JKI - String-Based Queued State Machine What’s nice about it? Structure of cases Macros Error handling Closing of the front panel on exit

11. TE-MPE-TM meeting 09/10/2014, Jaromir Ludwin, IFJ-PAN, Kraków JKI - String-Based Queued State Machine What’s not so nice about it? Error handling – where did the error come from? User interface handling is done only when the queue is empty – in the idle state What if we want few loops in parallel? – no way to add states to the queue from outside the loop It’s parsing this huge string with the state list on every iteration – we have fast computers we could live with it

12. TE-MPE-TM meeting 09/10/2014, Jaromir Ludwin, IFJ-PAN, Kraków Back to LabVIEW course pass by value vs. pass by reference

13. TE-MPE-TM meeting 09/10/2014, Jaromir Ludwin, IFJ-PAN, Kraków Back to LabVIEW course– Queues

14. TE-MPE-TM meeting 09/10/2014, Jaromir Ludwin, IFJ-PAN, Kraków ELQA Application Framework

15. TE-MPE-TM meeting 09/10/2014, Jaromir Ludwin, IFJ-PAN, Kraków ELQA Application Framework Create queues (one or many) Add states to the selected queue or to all of them De-queue the states from the selected queue or return ‘meta states’ Release the queues

16. TE-MPE-TM meeting 09/10/2014, Jaromir Ludwin, IFJ-PAN, Kraków Create Queues Each state added to the queue has a state name and can have an argument Each queue has a semaphore associated with it

17. TE-MPE-TM meeting 09/10/2014, Jaromir Ludwin, IFJ-PAN, Kraków Enqueue States (polymorphic VI)

18. TE-MPE-TM meeting 09/10/2014, Jaromir Ludwin, IFJ-PAN, Kraków Adding multiple states to the queue

19. TE-MPE-TM meeting 09/10/2014, Jaromir Ludwin, IFJ-PAN, Kraków Enqueue States (polymorphic VI) Acquire semaphore (de-queueing is stopped) Release semaphore (de-queueing is re- started)

20. TE-MPE-TM meeting 09/10/2014, Jaromir Ludwin, IFJ-PAN, Kraków Enqueue States (polymorphic VI)

21. TE-MPE-TM meeting 09/10/2014, Jaromir Ludwin, IFJ-PAN, Kraków Parse Queue

22. TE-MPE-TM meeting 09/10/2014, Jaromir Ludwin, IFJ-PAN, Kraków Release Queues

23. TE-MPE-TM meeting 09/10/2014, Jaromir Ludwin, IFJ-PAN, Kraków Examples – 600 A EE Switch Test

24. TE-MPE-TM meeting 09/10/2014, Jaromir Ludwin, IFJ-PAN, Kraków Examples – 600 A EE Switch Test

25. TE-MPE-TM meeting 09/10/2014, Jaromir Ludwin, IFJ-PAN, Kraków Examples TP4/C50 connector check

26. TE-MPE-TM meeting 09/10/2014, Jaromir Ludwin, IFJ-PAN, Kraków Examples – CT tester more parallel loops User interface Main data acquisition and data handling Trigger signal generation Secondary data acquisition Stimulus generation System monitoring and software interlock Speech synthesis

27. TE-MPE-TM meeting 09/10/2014, Jaromir Ludwin, IFJ-PAN, Kraków The framework can be downloaded from my web page: http://cern.ch/jludwin/ Thank you for your attention