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stm32: add low-power mod

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This commit is contained in:
xoviat 2023-08-22 17:00:00 -05:00
parent 7d6edd7b15
commit 6d35bcc3d9
3 changed files with 19 additions and 1 deletions
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3
embassy-stm32/Cargo.toml
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@ -8,7 +8,7 @@ license = "MIT OR Apache-2.0"
src_base = "https://github.com/embassy-rs/embassy/blob/embassy-stm32-v$VERSION/embassy-stm32/src/"
src_base_git = "https://github.com/embassy-rs/embassy/blob/$COMMIT/embassy-stm32/src/"
features = ["nightly", "defmt", "unstable-pac", "unstable-traits", "exti", "time-driver-any", "time"]
features = ["nightly", "defmt", "unstable-pac", "unstable-traits", "exti", "time-driver-any", "time", "low-power"]
flavors = [
{ regex_feature = "stm32f0.*", target = "thumbv6m-none-eabi" },
{ regex_feature = "stm32f1.*", target = "thumbv7m-none-eabi" },
@ -88,6 +88,7 @@ rt = ["stm32-metapac/rt"]
defmt = ["dep:defmt", "bxcan/unstable-defmt", "embassy-sync/defmt", "embassy-embedded-hal/defmt", "embassy-hal-internal/defmt", "embedded-io-async?/defmt-03", "embassy-usb-driver?/defmt", "embassy-net-driver/defmt", "embassy-time?/defmt"]
exti = []
low-power = []
## Automatically generate `memory.x` file using [`stm32-metapac`](https://docs.rs/stm32-metapac/)
memory-x = ["stm32-metapac/memory-x"]

2
embassy-stm32/src/lib.rs
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@ -47,6 +47,8 @@ pub mod i2c;
pub mod i2s;
#[cfg(stm32wb)]
pub mod ipcc;
#[cfg(feature = "low-power")]
pub mod low_power;
#[cfg(quadspi)]
pub mod qspi;
#[cfg(rng)]

15
embassy-stm32/src/low_power.rs Normal file
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@ -0,0 +1,15 @@
use crate::rtc::{Rtc, RtcInstant};
static mut RTC: Option<&'static Rtc> = None;
pub fn stop_with_rtc(rtc: &'static Rtc) {
unsafe { RTC = Some(rtc) };
}
pub fn start_wakeup_alarm(requested_duration: embassy_time::Duration) -> RtcInstant {
unsafe { RTC }.unwrap().start_wakeup_alarm(requested_duration)
}
pub fn stop_wakeup_alarm() -> RtcInstant {
unsafe { RTC }.unwrap().stop_wakeup_alarm()
}