Inputs to SOIS EDS Schema

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Presentation transcript:

Inputs to SOIS EDS Schema F. Torelli CCSDS SOIS WG, Darmstadt 17/04/2012

Objectives of SEDS Schema Main sections of SEDS Outline Objectives of SEDS Schema Main sections of SEDS XML technology and SEDS Schema Open points Status of ESA activities

Objectives of SEDS Schema One CCSDS book  What target color? One XML Schema  As part of the same book? The XML Schema shall be the template for all the SOIS EDS instances. The XML Schema shall be “modular”, to allow different entities to fill different sections if necessary. The XML Schema shall be built using SOIS DoT and SOIS C&DA Services Primitives.

Main sections of SEDS DVS (functional) I/F Mapping (bidirectional) between DVS I/F and DAS I/F DAS I/F Mapping (bidirectional) between DAS I/F and Subnetwork I/F Subnetwork I/F SOIS Subnetwork SOIS Subnetwork Service Primitives (API, arguments, configuration parameters) SOIS DAS SOIS DAS Service Primitives SOIS DVS SOIS DVS Service Primitives

XML and SEDS Schema - Technology Interface sections  XSD Mapping sections  SCXML + MathML XSD describes in XML the static interfaces. http://www.w3.org/XML/Schema SCXML describes in XML state machines, allowing to represent protocols and operations sequences. http://www.w3.org/TR/scxml/ MathML describes in XML mathematical functions, allowing to represent transfer and calibration functions. http://www.w3.org/Math/

SCXML Example 1/2 Source: http://commons. apache

SCXML Example 2/2 Source: http://svn. apache <?xml version="1.0" ?> - <!-- [...] --> - <scxml xmlns="http://www.w3.org/2005/07/scxml" version="1.0" initialstate="reset"> - <state id="reset"> <transition event="watch.start" target="running" /> </state> - <state id="running"> <transition event="watch.split" target="paused" /> <transition event="watch.stop" target="stopped" /> - <state id="paused"> <transition event="watch.unsplit" target="running" /> - <state id="stopped"> <transition event="watch.reset" target="reset" /> </scxml>

XML and SEDS Schema - Sections Service I/F sections should describe the service primitives and the related parameters. The mapping I/F sections should use as inputs the service interface of one layer and as output the service interface of the layer above (or below). The types and terms used inside the schema should belong to the SOIS DoT. The actual device SOIS EDS shall contain multiple instantiations of the sections above if multiple (syntactic or semantic) types are supported as input parameters.

SOIS Primitives Recap 1/2 Device Virtualisation Service: ACQUIRE_FROM_DEVICE.request (DVSAP Address, Transaction Identifier, Virtual Device Identifier, Value Identifier) ACQUIRE_FROM_DEVICE.indication (DVSAP Address, Transaction Identifier, Value, Result Metadata, Timestamp (optional)) COMMAND_DEVICE.request (DVSAP Address, Transaction Identifier, Virtual Device Identifier, Value Identifier, Value) COMMAND_DEVICE.indication (DVSAP Address, Transaction Identifier, Result Metadata) Device Access Service:

SOIS Primitives Recap 2/2 SubNetwork Memory Access Service: READ.request (MASAP Address, Destination Address, Transaction ID, Memory ID, Start Memory Address, Size, Priority, Channel, Authorisation (optional)) READ.indication (MASAP Address, Destination Address, Transaction ID, Memory ID, Start Memory Address, Size, Priority, Channel, Data, Result Metadata) WRITE.request (MASAP Address, Destination Address, Transaction ID, Memory ID, Start Memory Address, Size, Priority, Channel, Data, Acknowledge (optional), Authorisation (optional), Verification (optional)) READ/MODIFY/WRITE.request (MASAP Address, Destination Address, Transaction ID, Memory ID, Memory Address, Size, Mask, Priority, Channel, Data, Acknowledge (optional), Authentication (optional), Verification (optional)) MEMORY_ACCESS_RESULT.indication (MASAP Address, Destination Address, Transaction ID, Memory ID, Start Memory Address, Size, Result Metadata) Packet Service: PACKET_SEND.request (PSSAP Address, PDSAP Address, Service Class, Priority, Channel, Data) PACKET_RECEIVE.indication (PSSAP Address, PDSAP Address, Service Class, Channel, Data) PACKET_FAILURE.indication (PSSAP Address, PDSAP Address, Failure Metadata)

Open points DoT starting point SPA Ontology Mapping between SOIS service 1-to-1? 1-to-N? N-to-1? N-to-N? Constrains/rules for state machines and math functions Framework/template? Open?

Status of ESA activities EDS TRP “Adoption of Electronic Data Sheets and Device Virtualisation for onboard devices” at TEC-ED proposal from Scisys under evaluation. (Stuart knows the status better) Young Graduate Trainee at TEC-SW has been selected for 1 year of research on the SOIS EDS topics. Starting date September 2012. Both activities should feedback the results in the next SOIS WG meeting.