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Add a NOR trait to encode that word clearing is supported #57

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@korken89 korken89 commented Aug 4, 2024

This is to encode MCU flashes that have ECC, where it is common that only a complete clear of the word is allowed. This is a more restrictive version of MultiwriteNorFlash as it cannot encode flashes with ECC support.

Example use-case of this trait: tweedegolf/sequential-storage#63

This is to encode MCU flashes that have ECC, where
it is common that only a complete clear of the
word is allowed. This is a more restrictive
version of `MultiwriteNorFlash` as it cannot
encode flashes with ECC support.
@diondokter
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While obvious to add the trait like this, I'm not sure this is the best way to do it...

In Sequential-Storage I'd like to be able to switch behaviour depending on whether a true multiwrite can be done, or only a clear to 0. I'm not sure on how to do this.

However, say we change the MultiWriteNorFlash trait to have an associated const bool that declares the ability, then we could make a meaningful selection so it can use the pessimistic algo for clear-only.
But I'm still not sure that's the best API

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