Struct Flash 

pub struct Flash { /* private fields */ }

Simulated NOR Flash storage

Implementations

impl Flash

pub fn new() -> Self

Create new flash simulation with default config (64KB)

pub fn with_config(config: FlashConfig) -> Self

Create with custom configuration

pub fn capacity(&self) -> usize

Get total capacity

pub fn page_size(&self) -> usize

Get page size

pub fn erase_page(&mut self, page: PageId) -> Result<()>

Erase a page (sets all bytes to 0xFF)

Errors

Returns error if page index is out of range or max erase cycles exceeded

pub fn write(&mut self, offset: usize, data: &[u8]) -> Result<()>

Write data to flash

Flash can only change bits from 1 to 0, not 0 to 1. Attempting to set a bit from 0 to 1 returns an error.

pub fn read(&self, offset: usize, len: usize) -> Result<&[u8]>

Read data from flash

pub fn get_erase_count(&self, page: PageId) -> Option<u32>

Get erase count for a page

pub fn is_erased(&self, page: PageId) -> bool

Check if page is in erased state

pub fn find_wear_leveled_pages(&self, count: usize) -> Vec<PageId>

Find pages with lowest erase counts (for wear leveling)

pub fn total_erase_cycles(&self) -> u64

Get total erase cycles across all pages

pub fn dump(&self, start: usize, len: usize) -> String

Dump flash contents as hex (for debugging)

Trait Implementations

impl Debug for Flash

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Flash

fn default() -> Self

Returns the “default value” for a type.