08-Nov-2022

Attendees

  1. @David Burnett

  2. @Daniel Lovell

  3. @Kristofer PISTER

  4. @Austin Patel

  5. @Fil Maksimovic

  6. @Mališa Vučinić

  7. @Sara Faour

  8. @Thomas Watteyne

Minutes

  • @Mališa Vučinić Introducing @Sara Faour, new PhD student working on SCuM

    • Get SCuM working over a wide range of temperatures then introduce security aspects

    • @Kristofer PISTER suggests testing over a huge temperature range to demonstrate successful operation outside of usual crystal temperature ranges

    • 256 kB SRAM available in new 16 nm class-developed SoC. January starting again with RISC-V, better LDOs, ADC

  • @David Burnett cf email to scum mailing list Nov 2, early promising results in firmware workaround to VDDD Tap necessities.

    • Results replicated by @Fil Maksimovic, calibration routine still needs to be worked out

  • @Daniel Lovell

    • SCuM-V (2022) specs:
      Single Rocket Core
      5-stage in-order processor supporting RV32IMAC RISC-V instruction set
      200 MHz CPU clock
      32 MHz ADC/RTC clock for radio
      On-chip SRAM
      256kB scratchpad (“L2”)
      8kB 2 way I$ & D$
      JTAG, UART, QPSI Flash
      Interrupt controller
      PLIC (platform level)
      CLINT (core level)
      RTC capture and compare

    • Will share spec document and final presentation: https://drive.google.com/file/d/1gL19oxfopl0KOVEGzD7GkR1MheeGA0c_/view

  • @Thomas Watteyne target dates week of Sept 11 for SCuM conference

    • Worked on “Happy Serial,” a library to help with the serial port on the programmer. Available in OpenWSN github repo.

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