2022-01-17

MCU situation

• Looking at chinese knockoffs

• Notes of change from switching:

  • Bootloader - hardware layer would have to change

  • ms-common would need some pretty major rewrites

    • In future, maybe keep hardware layer as thin as possible

FreeRTOS Design

• ms-common relies on callbacks for interrupt-dependent behaviour

  • Not a good way to go about this

• Subscribe model for events

• Read, process, post

  • Project runs through a cycle, blocks for predetermined interval after work is complete

  • Calls read data, executes functionality, txes any require data

  • Peripherals all run in separate tasks, so can execute concurrently

  • Reads of peripheral data happen regardless of whether new data has arrived

  • ISR stores data in shared memory, read task responsible for copying to fsm task

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• Pick your favourite project, design it using your favourite method.