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add methods to borrow resources within interrupt::free

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Jorge Aparicio 2017-03-22 14:33:52 -05:00
parent 441a822780
commit 85c628c2af
1 changed files with 21 additions and 0 deletions
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21
src/lib.rs
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@ -11,6 +11,7 @@
extern crate cortex_m; extern crate cortex_m;
use cortex_m::ctxt::Context; use cortex_m::ctxt::Context;
use cortex_m::interrupt::CriticalSection;
use cortex_m::peripheral::Peripheral; use cortex_m::peripheral::Peripheral;
use cortex_m::register::{basepri, basepri_max}; use cortex_m::register::{basepri, basepri_max};
@ -76,6 +77,16 @@ where
peripheral: p, peripheral: p,
} }
} }
/// Borrows the resource for the duration of `interrupt::free`
pub fn cs_borrow<'cs>(&self, _ctxt: &'cs CriticalSection) -> &'cs P {
unsafe { &*self.peripheral.get() }
}
/// Mutably borrows the resource for the duration of `interrupt::free`
pub fn cs_borrow_mut<'cs>(&self, _ctxt: &'cs mut CriticalSection) -> &'cs mut P {
unsafe { &mut *self.peripheral.get() }
}
} }
impl<P, C> ResourceP<P, C> impl<P, C> ResourceP<P, C>
@ -171,6 +182,16 @@ impl<T, C> Resource<T, C> {
data: UnsafeCell::new(data), data: UnsafeCell::new(data),
} }
} }
/// Borrows the resource for the duration of `interrupt::free`
pub fn cs_borrow<'cs>(&self, _ctxt: &'cs CriticalSection) -> &'cs T {
unsafe { &*self.data.get() }
}
/// Mutably borrows the resource for the duration of `interrupt::free`
pub fn cs_borrow_mut<'cs>(&self, _ctxt: &'cs mut CriticalSection) -> &'cs mut T {
unsafe { &mut *self.data.get() }
}
} }
impl<T, C> Resource<T, C> impl<T, C> Resource<T, C>