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investigate persistent memory: eeprom emulation, backup registers, RTC #35

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celery6 opened this issue Nov 26, 2024 · 0 comments

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celery6 commented Nov 26, 2024 •

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having some kind of memory that persists between boots (when no power) could be quite useful.

Use cases include:

logger would like to have a unique identifier upon each bootup for file naming. this is also generally useful for debugging logs to be able to confirm the order they happened
important: in case the board hardfaults or hits some other unrecoverable state, a lastditch effort could be to write some important data to persistent memory so we can debug what happened even after the board loses power

things we should find out:

how much data can be stored
how would this be incorporated into the project? stm32 hal? external library? how complicated is it
for preserving state during hardfaults: is the persistent memory simple enough to be used in a last-ditch effort if the board is hardfaulted in some unknown way?

celery6 added the could do label

celery6 added this to the misc milestone

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