Struct nrf_softdevice::Flash

pub struct Flash { /* private fields */ }

Singleton instance of the Flash softdevice functionality.

Implementations

impl Flash

pub fn take(_sd: &Softdevice) -> Flash

Takes the Flash instance from the softdevice.

Panics

Panics if called more than once.

Trait Implementations

impl ErrorType for Flash

type Error = FlashError

Errors returned by this NOR flash.

impl NorFlash for Flash

const WRITE_SIZE: usize = 4usize

The minumum number of bytes the storage peripheral can write

const ERASE_SIZE: usize = 4_096usize

The minumum number of bytes the storage peripheral can erase

async fn write(&mut self, offset: u32, data: &[u8]) -> Result<(), FlashError>

If power is lost during write, the contents of the written words are undefined, but the rest of the page is guaranteed to be unchanged. It is not allowed to write to the same word twice.

async fn erase(&mut self, from: u32, to: u32) -> Result<(), FlashError>

Erase the given storage range, clearing all data within [from..to]. The given range will contain all 1s afterwards.

impl ReadNorFlash for Flash

const READ_SIZE: usize = 1usize

The minumum number of bytes the storage peripheral can read

fn read(&mut self, address: u32, data: &mut [u8]) -> Result<(), Self::Error>

Read a slice of data from the storage peripheral, starting the read operation at the given address offset, and reading bytes.len() bytes.

fn capacity(&self) -> usize

The capacity of the peripheral in bytes.

impl ReadNorFlash for Flash

const READ_SIZE: usize = 1usize

The minumum number of bytes the storage peripheral can read

async fn read( &mut self, address: u32, data: &mut [u8] ) -> Result<(), FlashError>

Read a slice of data from the storage peripheral, starting the read operation at the given address offset, and reading bytes.len() bytes.

fn capacity(&self) -> usize

The capacity of the peripheral in bytes.

impl MultiwriteNorFlash for Flash

According to Nordic, it is possible to perform multiple writes but only changing a bit from 1 -> 0, which is what MultiwriteNorFlash is for.

“The NVMC is only able to write 0 to bits in flash memory that are erased (set to 1). It cannot rewrite a bit back to 1. Only full 32-bit words can be written to flash memory using the NVMC interface. To write less than 32 bits, write the data as a full 32-bit word and set all the bits that should remain unchanged in the word to 1.”