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RamStorage

Struct RamStorage 

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pub struct RamStorage { /* private fields */ }
Expand description

In-memory block device for testing and examples.

Simulates flash: erased blocks are 0xFF, writes overwrite bytes, and erase resets a block to 0xFF. Use with Config and Filesystem.

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impl RamStorage

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pub fn new(block_size: u32, block_count: u32) -> Self

Create a new RAM-backed storage with the given block geometry.

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pub fn data(&self) -> &[u8]

Return the raw storage bytes (for inspection or persistence).

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pub fn block_size(&self) -> u32

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pub fn block_count(&self) -> u32

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impl Storage for RamStorage

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fn read(&mut self, block: u32, offset: u32, buf: &mut [u8]) -> Result<(), Error>

Read buf.len() bytes starting at offset within block.
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fn write(&mut self, block: u32, offset: u32, data: &[u8]) -> Result<(), Error>

Write data starting at offset within block. Read more
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fn erase(&mut self, block: u32) -> Result<(), Error>

Erase block, resetting all bytes to the erased state (typically 0xFF).
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fn sync(&mut self) -> Result<(), Error>

Flush pending writes. The default implementation is a no-op.

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.