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Replace regular memory read/writes with volatile memory read/writes 

Fixes #21.
This commit is contained in:
Dylan McKay 2020-07-31 22:00:33 +12:00
parent c7dfee4617
commit 3868326bca
1 changed files with 6 additions and 6 deletions
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12
src/register.rs
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@ -31,14 +31,14 @@ pub trait Register : Sized {
#[inline(always)] #[inline(always)]
fn write<V>(value: V) where V: Into<Self::T> { fn write<V>(value: V) where V: Into<Self::T> {
unsafe { unsafe {
*Self::ADDRESS = value.into(); core::ptr::write_volatile(Self::ADDRESS, value.into());
} }
} }
/// Reads the value of the register. /// Reads the value of the register.
#[inline(always)] #[inline(always)]
fn read() -> Self::T { fn read() -> Self::T {
unsafe { *Self::ADDRESS } unsafe { core::ptr::read_volatile(Self::ADDRESS) }
} }
/// Sets a set of bits to `1` in the register. /// Sets a set of bits to `1` in the register.
@ -69,7 +69,7 @@ pub trait Register : Sized {
#[inline(always)] #[inline(always)]
fn unset_mask_raw(mask: Self::T) { fn unset_mask_raw(mask: Self::T) {
unsafe { unsafe {
*Self::ADDRESS &= !mask; core::ptr::write_volatile(Self::ADDRESS, core::ptr::read_volatile(Self::ADDRESS) & !mask)
} }
} }
@ -88,7 +88,7 @@ pub trait Register : Sized {
#[inline(always)] #[inline(always)]
fn toggle_raw(mask: Self::T) { fn toggle_raw(mask: Self::T) {
unsafe { unsafe {
*Self::ADDRESS ^= mask; core::ptr::write_volatile(Self::ADDRESS, core::ptr::read_volatile(Self::ADDRESS) ^ mask)
} }
} }
@ -106,7 +106,7 @@ pub trait Register : Sized {
#[inline(always)] #[inline(always)]
fn is_mask_set_raw(mask: Self::T) -> bool { fn is_mask_set_raw(mask: Self::T) -> bool {
unsafe { unsafe {
(*Self::ADDRESS & mask) == mask (core::ptr::read_volatile(Self::ADDRESS) & mask) == mask
} }
} }
@ -124,7 +124,7 @@ pub trait Register : Sized {
#[inline(always)] #[inline(always)]
fn is_clear_raw(mask: Self::T) -> bool { fn is_clear_raw(mask: Self::T) -> bool {
unsafe { unsafe {
(*Self::ADDRESS & mask) == Self::T::from(0) (core::ptr::read_volatile(Self::ADDRESS) & mask) == Self::T::from(0)
} }
} }