Struct OptionBytes 

pub struct OptionBytes { /* private fields */ }

The option byte block as a whole, read with Fmc::read_option_bytes and written back with UnlockedFmc::write_option_bytes.

Writing goes through the whole block because erasing does: option bytes lose every byte at once, so a single field cannot be changed on its own. Read the block, change what you need, write it back.

Implementations

impl OptionBytes

pub const fn no_protection(self) -> Self

Leaves the flash readable by a debugger.

pub const fn protection_low(self) -> Self

Refuses debugger access. Going back to no_protection later mass-erases the main flash.

pub const fn protection_high_forever(self) -> Self

Refuses debugger access for good: after this the option bytes themselves can no longer be erased or reprogrammed, so no later call can undo it and the part keeps this setting for the rest of its life.

pub const fn free_watchdog(self, watchdog: FreeWatchdog) -> Self

Picks which free watchdog the part starts with.

pub const fn deep_sleep(self, entry: LowPowerEntry) -> Self

Says what entering deep-sleep does.

pub const fn standby(self, entry: LowPowerEntry) -> Self

Says what entering standby does.

pub const fn boot1(self, boot1: Boot1) -> Self

Sets the level BOOT1 is taken to have.

pub const fn vdda_monitor(self, monitor: VddaMonitor) -> Self

Turns the VDDA monitor on or off.

pub const fn sram_parity(self, parity: SramParity) -> Self

Turns the SRAM parity check on or off.

pub const fn data(self, data: u16) -> Self

Sets the two user data bytes, which the silicon never reads itself.

pub const fn protect(self, page: Page) -> Self

Closes page to erasing and programming.

One OB_WP bit covers four pages, so this closes the three neighbours of page along with it.

pub const fn unprotect(self, page: Page) -> Self

Opens page, and with it the three pages sharing its OB_WP bit.

pub const fn protection(&self) -> ProtectionLevel

The protection level this block asks for.

pub const fn get_free_watchdog(&self) -> FreeWatchdog

Which free watchdog the part starts with.

pub const fn get_deep_sleep(&self) -> LowPowerEntry

What entering deep-sleep does.

pub const fn get_standby(&self) -> LowPowerEntry

What entering standby does.

pub const fn get_boot1(&self) -> Boot1

The level BOOT1 is taken to have.

pub const fn get_vdda_monitor(&self) -> VddaMonitor

Whether the VDDA monitor is on.

pub const fn get_sram_parity(&self) -> SramParity

Whether the SRAM parity check is on.

pub const fn data_bytes(&self) -> u16

The two user data bytes.

pub const fn is_protected(&self, page: Page) -> bool

Whether this block closes page to erasing and programming.

Trait Implementations

impl Clone for OptionBytes

fn clone(&self) -> OptionBytes

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for OptionBytes

impl Default for OptionBytes

fn default() -> Self

The state the part leaves the factory in: no protection, and every other byte erased.

impl Eq for OptionBytes

impl Format for OptionBytes

where ProtectionLevel: Format,

fn format(&self, f: Formatter<'_>)

Writes the defmt representation of self to fmt.

impl PartialEq for OptionBytes

fn eq(&self, other: &OptionBytes) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for OptionBytes