Workshop - November Toulouse Absolute scalar magnetometer controller design Jean BERTRAND, Jérémie POULY – CNES Axel BONESS, François BERTRAND – CEA LETI

Workshop - November 2011 CNES interest in SoCKET project Constat / Lessons learned : Embedded software functions are more and more complex (autonomy, onboard data processing) Increasing capacity of FPGA and ASIC suitable for space applications implies design complexity (soft IP µP core) Nevertheless, current HW and SW processes are independent and show little collaboration  Need for a mixed (HW/SW) design environment  Fast prototyping tools / architecture exploration  Model based validation early in the development cycle  Strong needs for HW/SW optimization for payload digital processing unit. Often scientific DPU are very “mission specific” and use all (and more) available computing resources.

Workshop - November 2011 CNES goals in SoCKET project Critical Embedded System design is our daily concern : Support to scientific payloads under laboratories responsibility. Small Satellites platform developed by CNES itself. CNES wants to offer a “ready to use” design environment (process, toolbox, architecture and building blocks) And also : Work together with space industry towards innovation Transfer SoCKET learning to our scientific partners

Workshop - November 2011 CNES case study In SoCKET, CNES wants to carry the needs of scientific laboratories involved in space projects Case study based on existing system : ASM SWARM, developed by CEA LETI.

Workshop - November 2011 ASM SWARM Helium 4 optical pumping magnetometer Goal : absolute measurement of magnetic field (scalar & vector) Gérard Cottet

Workshop - November 2011 ASM SWARM : complexity

Workshop - November 2011 ASM SWARM : specificities Low frequency : 10 kHz in HW 1 kHz in SW But large HW datapath : 32 bits at endpoint 96 bits at largest point Calculus in HW Management & some computing in SW

Workshop - November 2011 Evaluation Mission : Evaluate as a small entity our capacity to integrate SoCKET flow to deliver a spatial ASIC 3 stages: 1) Modelize SWARM to master SoCKET tools 2) Cosimulate HW and SW 3) Alternative HW architecture exploration and optimisation

Workshop - November 2011 Relevance Full adoption of SoCKET flow Specification Modelisation Cosimulation Architecture exploration Development Constrained environment Limited human resources Definite application Spatial constraints

Workshop - November 2011 Questions