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|
#[macro_export]
macro_rules! peripherals {
($($(#[$cfg:meta])? $name:ident),*$(,)?) => {
pub mod peripherals {
$(
$(#[$cfg])?
#[allow(non_camel_case_types)]
pub struct $name { _private: () }
$(#[$cfg])?
impl $name {
/// Unsafely create an instance of this peripheral out of thin air.
///
/// # Safety
///
/// You must ensure that you're only using one instance of this type at a time.
#[inline]
pub unsafe fn steal() -> Self {
Self{ _private: ()}
}
}
$(#[$cfg])?
unsafe impl $crate::Unborrow for $name {
type Target = $name;
#[inline]
unsafe fn unborrow(self) -> $name {
self
}
}
)*
}
#[allow(non_snake_case)]
pub struct Peripherals {
$(
$(#[$cfg])?
pub $name: peripherals::$name,
)*
}
impl Peripherals {
///Returns all the peripherals *once*
#[inline]
pub(crate) fn take() -> Self {
#[no_mangle]
static mut _EMBASSY_DEVICE_PERIPHERALS: bool = false;
critical_section::with(|_| unsafe {
if _EMBASSY_DEVICE_PERIPHERALS {
panic!("init called more than once!")
}
_EMBASSY_DEVICE_PERIPHERALS = true;
Self::steal()
})
}
}
impl Peripherals {
/// Unsafely create an instance of this peripheral out of thin air.
///
/// # Safety
///
/// You must ensure that you're only using one instance of this type at a time.
#[inline]
pub unsafe fn steal() -> Self {
Self {
$(
$(#[$cfg])?
$name: peripherals::$name::steal(),
)*
}
}
}
};
}
#[macro_export]
macro_rules! unborrow {
($($name:ident),*) => {
$(
let mut $name = unsafe { $name.unborrow() };
)*
}
}
#[macro_export]
macro_rules! unsafe_impl_unborrow {
($type:ident) => {
unsafe impl $crate::Unborrow for $type {
type Target = $type;
#[inline]
unsafe fn unborrow(self) -> Self::Target {
self
}
}
};
}
|
