PACS IBDR 27/28 Feb 2002 OBSW Simulation1 PACS OBSW Simulation/Test A.Mazy (CSL), S.Pezzuto (IFSI), A.N.Belbachir (TUVIE), H. Feuchtgruber (MPE)

PACS IBDR 27/28 Feb 2002 OBSW Simulation2 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)

PACS IBDR 27/28 Feb 2002 OBSW Simulation3 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.

PACS IBDR 27/28 Feb 2002 OBSW Simulation4 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.

PACS IBDR 27/28 Feb 2002 OBSW Simulation5 Test Set-up

PACS IBDR 27/28 Feb 2002 OBSW Simulation6

PACS IBDR 27/28 Feb 2002 OBSW Simulation7 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 TC+Acknowledge path DPU - DMC verified TC+Acknowledge path DPU - SPU-SWL and DPU – SPU-LWL verified

PACS IBDR 27/28 Feb 2002 OBSW Simulation8 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.

PACS IBDR 27/28 Feb 2002 OBSW Simulation9 Conclusion The emulator+simulator 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