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Merge pull request #4358 from skoe/opamp_rcc

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Use proper RCC clock enable for opamps
This commit is contained in:
Dario Nieuwenhuis 2025-07-06 18:49:17 +00:00 committed by GitHub
commit 78af9ae8af
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1 changed files with 27 additions and 0 deletions
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27
embassy-stm32/src/opamp.rs
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@ -4,6 +4,8 @@
use embassy_hal_internal::PeripheralType;
use crate::pac::opamp::vals::*;
#[cfg(not(any(stm32g4, stm32f3)))]
use crate::rcc::RccInfo;
use crate::Peri;
/// Performs a busy-wait delay for a specified number of microseconds.
@ -68,6 +70,8 @@ impl<'d, T: Instance> OpAmp<'d, T> {
///
/// Does not enable the opamp, but does set the speed mode on some families.
pub fn new(opamp: Peri<'d, T>, #[cfg(opamp_v5)] speed: OpAmpSpeed) -> Self {
#[cfg(not(any(stm32g4, stm32f3)))]
T::info().rcc.enable_and_reset();
#[cfg(opamp_v5)]
T::regs().csr().modify(|w| {
w.set_opahsm(speed == OpAmpSpeed::HighSpeed);
@ -452,6 +456,13 @@ impl<'d, T: Instance> OpAmp<'d, T> {
}
}
#[cfg(not(any(stm32g4, stm32f3)))]
impl<'d, T: Instance> Drop for OpAmp<'d, T> {
fn drop(&mut self) {
T::info().rcc.disable();
}
}
impl<'d, T: Instance> Drop for OpAmpOutput<'d, T> {
fn drop(&mut self) {
T::regs().csr().modify(|w| {
@ -469,7 +480,14 @@ impl<'d, T: Instance> Drop for OpAmpInternalOutput<'d, T> {
}
}
#[cfg(not(any(stm32g4, stm32f3)))]
pub(crate) struct Info {
rcc: RccInfo,
}
pub(crate) trait SealedInstance {
#[cfg(not(any(stm32g4, stm32f3)))]
fn info() -> &'static Info;
fn regs() -> crate::pac::opamp::Opamp;
}
@ -600,6 +618,15 @@ foreach_peripheral!(
foreach_peripheral! {
(opamp, $inst:ident) => {
impl SealedInstance for crate::peripherals::$inst {
// G4 and F3 use SYSCFGEN, which is always enabled
#[cfg(not(any(stm32g4, stm32f3)))]
fn info() -> &'static Info {
use crate::rcc::SealedRccPeripheral;
static INFO: Info = Info {
rcc: crate::peripherals::$inst::RCC_INFO,
};
&INFO
}
fn regs() -> crate::pac::opamp::Opamp {
crate::pac::$inst
}