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Add public function to get current clock configuration

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This commit is contained in:
David Lawrence 2025-06-06 13:01:11 -04:00
parent 141c170db4
commit c10688cd40
1 changed files with 10 additions and 1 deletions
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11
embassy-stm32/src/rcc/mod.rs
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@ -95,6 +95,15 @@ pub(crate) unsafe fn get_freqs() -> &'static Clocks {
unwrap!(CLOCK_FREQS_PTR.load(core::sync::atomic::Ordering::SeqCst).as_ref()).assume_init_ref()
}
/// Get the current clock configuration of the chip.
pub fn clocks<'a>(_rcc: &'a crate::Peri<'a, crate::peripherals::RCC>) -> &'a Clocks {
// Safety: the existence of a `Peri<RCC>` means that `rcc::init()`
// has already been called, so `CLOCK_FREQS` must be initialized.
// The clocks could be modified again by `reinit()`, but reinit
// (for this reason) requires an exclusive reference to `Peri<RCC>`.
unsafe { get_freqs() }
}
pub(crate) trait SealedRccPeripheral {
fn frequency() -> Hertz;
#[allow(dead_code)]
@ -381,7 +390,7 @@ pub fn disable<T: RccPeripheral>() {
///
/// This should only be called after `init`.
#[cfg(not(feature = "_dual-core"))]
pub fn reinit(config: Config) {
pub fn reinit<'a>(config: Config, _rcc: &'a mut crate::Peri<'a, crate::peripherals::RCC>) {
critical_section::with(|cs| init_rcc(cs, config))
}