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stm32/dac: Ensure that clock is enabled

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This commit is contained in:
Ben Gamari 2021-09-28 20:56:19 -04:00
parent 0b9961584b
commit 5a38cc2140
1 changed files with 15 additions and 0 deletions
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15
embassy-stm32/src/dac/v2.rs
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@ -5,6 +5,17 @@ use core::marker::PhantomData;
use embassy::util::Unborrow; use embassy::util::Unborrow;
use embassy_hal_common::unborrow; use embassy_hal_common::unborrow;
/// Sadly we cannot use `RccPeripheral::enable` since devices are quite inconsistent DAC clock
/// configuration.
unsafe fn enable() {
#[cfg(rcc_h7)]
crate::pac::RCC.apb1lenr().modify(|w| w.set_dac12en(true));
#[cfg(rcc_g0)]
crate::pac::RCC.apbenr1().modify(|w| w.set_dac1en(true));
#[cfg(rcc_l4)]
crate::pac::RCC.apb1enr1().modify(|w| w.set_dac1en(true));
}
#[derive(Debug)] #[derive(Debug)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))] #[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub enum Error { pub enum Error {
@ -91,6 +102,10 @@ impl<'d, T: Instance> Dac<'d, T> {
) -> Self { ) -> Self {
unborrow!(ch1, ch2); unborrow!(ch1, ch2);
unsafe {
enable();
}
let ch1 = ch1.degrade_optional(); let ch1 = ch1.degrade_optional();
if ch1.is_some() { if ch1.is_some() {
unsafe { unsafe {