SciSys SOIS Prototyping Activities

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Presentation transcript:

SciSys SOIS Prototyping Activities CCSDS Spring 2008 Meeting, Washington D.C, USA

Overview SOIS Reference Implementation GenFAS for MARC ASSERT & DisCo Complete SOIS architecture for evaluation & feedback GenFAS for MARC SOIS used as basis of Avionics ASSERT & DisCo SOIS used as basis of Distributed Computing Middlewares Future Opportunities Flights? 11th March 2008 SciSys SOIS Prototyping Activities - CCSDS Spring 2008

SOIS Reference Implementation SciSys (UK) and Astrium SAS (FR) Customer: ESA Jan – Oct 2008 Objectives: Prototype SOIS architecture over SpaceWire and MIL-STD-1553B Investigate SOIS Plug-and-Play architecture on SpaceWire Deploy on ESA’s RASTA Test Facility for future use Provide feedback on SOIS Red Books Provide draft Device Enumeration and Virtualisation Red Books 11th March 2008 SciSys SOIS Prototyping Activities - CCSDS Spring 2008

SOIS Reference Implementation Application Support Services: Asynchronous Messaging Service (subset) Command and Data Acquisition Services Device Virtualisation Service (first prototype) Device Data Pooling Service Device Access Service Device Enumeration Service (first prototype) File Services File Access Service File Management Service (File Transfer Service not addressed) Time Access Service (Packet Store Service not addressed) 11th March 2008 SciSys SOIS Prototyping Activities - CCSDS Spring 2008

SOIS Reference Implementation MIL-STD-1553B Subnetwork Services: Derived from ECSS 1553 Extensions WG Packet Service (Best Effort & Reserved QoS only) Memory Access Service Synchronisation Service (TIME primitives only) Device Discovery Service Test Service SpaceWire Subnetwork Services: Derived from ECSS SpaceWire WG Packet Service (Best Effort & Assured QoS only) Memory Access Service (RMAP) Synchronisation Service (Simulation of SpaceWire TimeCodes, TIME primitives only) (Test Service not addressed) 11th March 2008 SciSys SOIS Prototyping Activities - CCSDS Spring 2008

SOIS Reference Implementation Reference Mission on ESA’s RASTA Test Facility LEON2 CPU, RTEMS RTOS, ANSI C 11th March 2008 SciSys SOIS Prototyping Activities - CCSDS Spring 2008

MARC – Modular Architecture for Robust Computing Astrium Ltd (System, UK), SciSys (Software, UK), SEA (Hardware, UK) Customer: ESA Oct 2007 – Mid 2009 Objective: Develop scalable decentralised Avionics and Payload Control based on SpaceWire Network and SOIS QoS Real-Time Command distribution using Reserved QoS Payload Data distribution using Best Effort/Assured QoS CCSDS Packet distributed between software using AMS and Packet Service AOCS Transducers accessed and controlled using CDAS and Packet/Memory Access Service Onboard Time distributed and synchronised includes use of Synchronisation Service (SpaceWire TimeCodes insufficient to be soley used) 11th March 2008 SciSys SOIS Prototyping Activities - CCSDS Spring 2008

MARC – UNIONICS System Architecture Copyright SEA Ltd. 11th March 2008 SciSys SOIS Prototyping Activities - CCSDS Spring 2008

MARC – GenFAS Software Architecture 11th March 2008 SciSys SOIS Prototyping Activities - CCSDS Spring 2008

MARC – Demonstrator Architecture Copyright SEA Ltd. 11th March 2008 SciSys SOIS Prototyping Activities - CCSDS Spring 2008

ASSERT Many European companies and academic institutes Customer: EC 50:50 funded under Framework 6 Sept 2004 – Oct 2007 Objective: Automated proof based System and Software Engineering for Real-Time Applications Distributed, Dependable, Hard Real-Time Virtual Machine Middleware, RTOS, Communications Developed by ENST, UPM, UPD, SciSys and others… Platforms Ada 2005, ANSI C, GNAT for LEON2, TSIM LEON2 Simulator, SpaceWire packet tunnelling over UDP/IP SOIS Prototypes: Message Transfer Service over SpaceWire Packet Service (Best Effort and Assured QoS) 11th March 2008 SciSys SOIS Prototyping Activities - CCSDS Spring 2008

DisCo - Overview Astrium SAS (System & Dem SW, FR), SciSys (Middleware SW, UK), consultancy from University of York and LAAS Customer: ESA Jan 2005 – Jan 2008 Objective: Develop Distributed Computing Middleware for Payload Control Platforms: SpaceWire LEON2 (Pender Electronics), DSP (Dundee), PC ANSI C and RTEMS, VDP and Linux RTOS SOIS prototypes – shared with GenFAS for MARC Message Transfer Service, Device Access Service, Device Data Pooling Service , File Services, Time Access Service SpaceWire Packet (Best Effort and Assured QoS), Memory Access, and Time Distribution Services 11th March 2008 SciSys SOIS Prototyping Activities - CCSDS Spring 2008

DisCo – Software Architecture 11th March 2008 SciSys SOIS Prototyping Activities - CCSDS Spring 2008

DisCo – Demonstrator Architecture Copyright Astrium SAS 11th March 2008 SciSys SOIS Prototyping Activities - CCSDS Spring 2008

Future Opportunities Follow-on to SOIS Reference Implementation Implementation of any missing services E.g. EVENT.indication of Synchronisation Service Integration into wider communications scenario simulation, inc. Space Link Port to CAN? Fault tolerance? AOB ExoMars Rover ESA Aurora Programme mission Phase B2 SOIS baselined for Rover Avionics by EADS Astrium Ltd 11th March 2008 SciSys SOIS Prototyping Activities - CCSDS Spring 2008