PACS OBSW Simulation/Test

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PACS OBSW Simulation/Test

• A.Mazy (CSL), S.Pezzuto (IFSI), A.N.Belbachir
  (TUVIE),
• H. Feuchtgruber (MPE)

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Virtuoso Emulator under Windows

• Virtuoso kernel services are mapped onto windows
  services
• Services currently implemented
• Tasks
• Semaphores
• Resources
• Events
• FIFOs
• Timers
• Link 1355 (mapped onto TCP/IP connection or using
  PCI-Spacewire board)

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OBS Simulators on Virtuoso Emulator

• Pros
• 95 of OBS code is reused for simulator
• Powerful Windows tools available for debug
• Run on any desktop PC
• Can be connected to real HW

• Cons
• Scheduling behavior is different from Virtuoso
• Assembly code can not be simulated

• Perfect tool to test the functionality of the
  OBSW,
• but not the performance.

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PACS OBSW Tests (1)

• Test Day at CSL 6-Feb-2002
• Simulators of DPU, DMC, SPU-SWL and SPU-LWL OBSW
  running on 3 PCs
• Certain bypasses are implemented due to the
  simulator environment (1553 interface to DPU)
• Visualization of results is implemented as
  printf statements to screens or files
• Major parts of the different individual OBSW
  pieces of DPU, DMC, SPU-SWL and SPU-LWL are
  already implemented. No compression/reduction
  running at this point yet.

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Test Set-up
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PACS OBSW Test (2)

• Major debugging on sub-system protocol issues
  done ? online updates
• Emulator debugging ? online update
• Inspection of error handling between sub-systems
• ? online updates
• HK packet transfer from sub-units to DPU verified
• TCAcknowledge path DPU - DMC verified
• TCAcknowledge path DPU - SPU-SWL and DPU
  SPU-LWL verified

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PACS OBSW Test (3)

• Science packet transmission from DMC SPU
  verified (blue and red, photometry and
  spectroscopy)
• 1 OBCP has been executed including a DMC sequence
  (staring photometry)
• Science packets of SPU-simulated data have been
  received by DPU but still some communication
  problems left, but identified.
• Diagnostic data collection not yet verified due
  to failures ? debugging done after the test
• Entire Science TM path from DMC-SPU-DPU not yet
  tested due to lack of time.

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Conclusion

• The emulatorsimulator exercise has demonstrated
  its usefulness and value for PACS OBSW
  development and debugging
• Continue efforts on the simulators
• Update software to resolve identified problems
• Update involved documentation
• Next Test day at CSL 6/7-Mar-2002