1. Slide : 1 6/11-2008SpaceWire Conference SpaceWire Test and Demonstration using the Integrated Payload Processing Module J.Ilstad, D.Jameux European Space Research Technology Centre (ESTEC) SpaceWire Conference 2008 Nara, Japan

2. Slide : 2 SpaceWire Test & Demonstration Platform 06/11/2008SpaceWire Conference 2008 Outline Motivation TDP Overview TDP Architecture –Integrated Payload Processing Module –RTEMS –Packet Utilization Standard SpaceWire Demonstration Scenarios Future Outlook Conclusion

3. Slide : 3 SpaceWire Test & Demonstration Platform 06/11/2008SpaceWire Conference 2008 Motivation Establish and demonstrate best practices towards…. –Network Topologies with respect to reference architectures. –Redundancy Schemes and FDIR –SpW Networking Protocols together with use of SpW- enabled equipment General purpose processing nodes Dedicated processing modules Nodes with no processing capability

4. Slide : 4 SpaceWire Test & Demonstration Platform 06/11/2008SpaceWire Conference 2008 TDP overview Basic setup: TT&C, SMU, PDHU, 1 instrument, no redundancy A mix between RMAP and subset of PUS is used in TDP 1.0

5. Slide : 5 SpaceWire Test & Demonstration Platform 06/11/2008SpaceWire Conference 2008 TDP 1.0 Architecture RTEMS PUS packets SpaceWire Demonstration Activity with Aurelia Microelettronica (IT) T0 Q3 2008, end Q2 2009. 3 IPPM boards is used as basis for an onboard DHS RMAP

6. Slide : 6 SpaceWire Test & Demonstration Platform 06/11/2008SpaceWire Conference 2008 Integrated Payload Processing Module AT697E CPU 262 Mbyte memory SpW Router 10X 2 CAN links MIL1553 Bus DSU Connector UARTs (GPIO) PCI connector GPIO pins ICCU (control FPGA)

7. Slide : 7 SpaceWire Test & Demonstration Platform 06/11/2008SpaceWire Conference 2008 IPPM Control and Communication Unit Remote Control SW Application upload Bridge traffic between other bus interfaces Direct memory access RMAP CoDec PCIDSU Other Protocols will be processed by SW

8. Slide : 8 SpaceWire Test & Demonstration Platform 06/11/2008SpaceWire Conference 2008 RTEMS Primary Motivation –Open Source –Real Time multitasking kernel with modular architecture –Availability of development and support tools E.g. Eclipse with plug-ins, RTEMS configuration tools –Great potential for critical onboard SW Secondary Motivation –Availability of support Gaisler Resarch, EDI soft (RTEMS Centre Europe) –Mission heritage (e.g. Hercel Planck) –In-house developments (e.g. RASTA)

9. Slide : 9 SpaceWire Test & Demonstration Platform 06/11/2008SpaceWire Conference 2008 RTEMS Objectives –To utilize RTEMS with SpaceWire equipment and protocol related development activities Identify requirements and constraints at both SW and HW level Identify recommendations or best practices for implementation.

10. Slide : 10 SpaceWire Test & Demonstration Platform 06/11/2008SpaceWire Conference 2008 Packet Utilization Standard (ECSS-E-70-41a) Background –The PUS complements the CCSDS packet TM&TC standards by defining the application-level interface between ground and space –It provides the operational concepts and a set of on- board Services meeting them. –It defines TM&TC packets and structures to exploit the onboard services. Motivation –Study interaction between PUS and SpW protocols.

11. Slide : 11 SpaceWire Test & Demonstration Platform 06/11/2008SpaceWire Conference 2008 SpaceWire demonstration scenarios Test and validate SpW network topologies and SpW- enabled devices Investigate SpW-based time distribution as opposed to legacy time distribution (PPS) Prototyping and validating SpW-based protocols coupled with use of PUS Evaluate FDIR concepts in this context Introduce SOIS in future development steps of TDP

12. Slide : 12 SpaceWire Test & Demonstration Platform 06/11/2008SpaceWire Conference 2008 Future Outlook Inst. 2 PDHU Satellite Management Unit S-Band TM/TC Payload Platform X-Band TM MM Inst. 3 Inst. 1 AOCS Subsystem Mock-up Power Subsystem Mock-up Propulsion Subsystem Mock-up P/F MIL 1553 P/L MIL 1553 P/F MIL 1553 SpaceWire Discrete I/O P/L MIL 1553 Discrete IO CAN RTU Sensor Cluster ASSP w/ SpW IF SpW-RT SpW PnP SpW-RT SpW PnP IPPM Unit

13. Slide : 13 SpaceWire Test & Demonstration Platform 06/11/2008SpaceWire Conference 2008 Conclusion SpaceWire Test & Demonstration Platform –view towards current and future SpaceWire related development activities. The features of the IPPM make it an ideal candidate for; –experimentation and validation of SpaceWire ‑ enabled equipment; –SpaceWire network topology and protocols; –Hosting RTEMS based applications conforming to ECSS-E-70-41a (PUS) and SW based protocol handlers. Future development steps of the TDP will introduce; –SpaceWire equipment based on the next generation of ASSPs such as the SpW-RTC. –CCSDS SOIS

14. Slide : 14 SpaceWire Test & Demonstration Platform 06/11/2008SpaceWire Conference 2008 Thank You