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//! Flash memory
use crate::pac::{flash, FLASH};
/// Extension trait to constrain the FLASH peripheral
pub trait FlashExt {
/// Constrains the FLASH peripheral to play nicely with the other
/// abstractions
fn constrain(self) -> Parts;
}
impl FlashExt for FLASH {
fn constrain(self) -> Parts {
Parts { acr: ACR { _0: () } }
}
}
/// Constrained FLASH peripheral
pub struct Parts {
/// Opaque ACR register
pub acr: ACR,
}
/// Opaque ACR register
pub struct ACR {
_0: (),
}
impl ACR {
pub(crate) fn acr(&mut self) -> &flash::ACR {
// NOTE(unsafe) this proxy grants exclusive access to this register
unsafe { &(*FLASH::ptr()).acr }
}
}