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stm32/low-power: refactor refcount

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xoviat
2023-10-25 19:07:31 -05:00
parent 0cc3e18db6
commit e8a3cfaed6
6 changed files with 29 additions and 35 deletions
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24
embassy-stm32/src/rcc/mod.rs
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@ -23,8 +23,6 @@ pub use mco::*;
#[cfg_attr(rcc_u5, path = "u5.rs")]
#[cfg_attr(rcc_wba, path = "wba.rs")]
mod _version;
#[cfg(feature = "low-power")]
use core::sync::atomic::{AtomicU32, Ordering};
pub use _version::*;
@ -183,27 +181,7 @@ pub struct Clocks {
}
#[cfg(feature = "low-power")]
static CLOCK_REFCOUNT: AtomicU32 = AtomicU32::new(0);
#[cfg(feature = "low-power")]
pub fn low_power_ready() -> bool {
// trace!("clock refcount: {}", CLOCK_REFCOUNT.load(Ordering::SeqCst));
CLOCK_REFCOUNT.load(Ordering::SeqCst) == 0
}
#[cfg(feature = "low-power")]
pub(crate) fn clock_refcount_add(_cs: critical_section::CriticalSection) {
// We don't check for overflow because constructing more than u32 peripherals is unlikely
let n = CLOCK_REFCOUNT.load(Ordering::Relaxed);
CLOCK_REFCOUNT.store(n + 1, Ordering::Relaxed);
}
#[cfg(feature = "low-power")]
pub(crate) fn clock_refcount_sub(_cs: critical_section::CriticalSection) {
let n = CLOCK_REFCOUNT.load(Ordering::Relaxed);
assert!(n != 0);
CLOCK_REFCOUNT.store(n - 1, Ordering::Relaxed);
}
pub(crate) static mut REFCOUNT_STOP2: u32 = 0;
/// Frozen clock frequencies
///