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fix: stm32/usb: Fixed STM32H5 build requiring time feature

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A busy loop has been added for when the "time" feature is not enabled.
This commit is contained in:
Gabriel Smith 2025-08-29 10:46:33 -04:00
parent f86cf87f2f
commit fb8757c690
2 changed files with 12 additions and 1 deletions
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2
embassy-stm32/CHANGELOG.md
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@ -8,6 +8,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
<!-- next-header --> <!-- next-header -->
## Unreleased - ReleaseDate ## Unreleased - ReleaseDate
- fix: Fixed STM32H5 builds requiring time feature
## 0.4.0 - 2025-08-26 ## 0.4.0 - 2025-08-26
- feat: stm32/sai: make NODIV independent of MCKDIV - feat: stm32/sai: make NODIV independent of MCKDIV

11
embassy-stm32/src/usb/usb.rs
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@ -912,7 +912,16 @@ impl<'d, T: Instance> driver::EndpointOut for Endpoint<'d, T, Out> {
// Software should ensure that a small delay is included before accessing the SRAM contents. This delay should be // Software should ensure that a small delay is included before accessing the SRAM contents. This delay should be
// 800 ns in Full Speed mode and 6.4 μs in Low Speed mode. // 800 ns in Full Speed mode and 6.4 μs in Low Speed mode.
#[cfg(stm32h5)] #[cfg(stm32h5)]
embassy_time::block_for(embassy_time::Duration::from_nanos(800)); {
#[cfg(feature = "time")]
embassy_time::block_for(embassy_time::Duration::from_nanos(800));
#[cfg(not(feature = "time"))]
{
let freq = unsafe { crate::rcc::get_freqs() }.sys.to_hertz().unwrap().0 as u64;
let cycles = freq * 800 / 1_000_000;
cortex_m::asm::delay(cycles as u32);
}
}
RX_COMPLETE[index].store(false, Ordering::Relaxed); RX_COMPLETE[index].store(false, Ordering::Relaxed);