Merge pull request #1822 from xoviat/rtc-lp
stm32: get stop mode working
This commit is contained in:
xoviat
GitHub
commit
13f0501673
8 changed files with 361 additions and 131 deletions
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@ -197,6 +197,11 @@ pub fn init(config: Config) -> Peripherals {
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// must be after rcc init
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#[cfg(feature = "_time-driver")]
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time_driver::init();
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#[cfg(feature = "low-power")]
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while !crate::rcc::low_power_ready() {
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crate::rcc::clock_refcount_sub();
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}
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}
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p
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@ -3,46 +3,52 @@ use core::marker::PhantomData;
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use cortex_m::peripheral::SCB;
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use embassy_executor::*;
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use embassy_time::Duration;
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use crate::interrupt;
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use crate::interrupt::typelevel::Interrupt;
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use crate::pac::EXTI;
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use crate::rcc::low_power_ready;
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use crate::time_driver::{get_driver, RtcDriver};
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const THREAD_PENDER: usize = usize::MAX;
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const THRESHOLD: Duration = Duration::from_millis(500);
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use crate::rtc::{Rtc, RtcInstant};
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use crate::rtc::Rtc;
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static mut RTC: Option<&'static Rtc> = None;
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static mut EXECUTOR: Option<Executor> = None;
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foreach_interrupt! {
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(RTC, rtc, $block:ident, WKUP, $irq:ident) => {
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#[interrupt]
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unsafe fn $irq() {
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Executor::on_wakeup_irq();
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unsafe { EXECUTOR.as_mut().unwrap() }.on_wakeup_irq();
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}
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};
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}
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// pub fn timer_driver_pause_time() {
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// pause_time();
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// }
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pub fn stop_with_rtc(rtc: &'static Rtc) {
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crate::interrupt::typelevel::RTC_WKUP::unpend();
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unsafe { crate::interrupt::typelevel::RTC_WKUP::enable() };
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EXTI.rtsr(0).modify(|w| w.set_line(22, true));
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EXTI.imr(0).modify(|w| w.set_line(22, true));
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unsafe { RTC = Some(rtc) };
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unsafe { EXECUTOR.as_mut().unwrap() }.stop_with_rtc(rtc)
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}
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pub fn start_wakeup_alarm(requested_duration: embassy_time::Duration) -> RtcInstant {
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unsafe { RTC }.unwrap().start_wakeup_alarm(requested_duration)
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}
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pub fn stop_wakeup_alarm() -> RtcInstant {
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unsafe { RTC }.unwrap().stop_wakeup_alarm()
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}
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// pub fn start_wakeup_alarm(requested_duration: embassy_time::Duration) {
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// let rtc_instant = unsafe { EXECUTOR.as_mut().unwrap() }
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// .rtc
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// .unwrap()
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// .start_wakeup_alarm(requested_duration);
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//
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// unsafe { EXECUTOR.as_mut().unwrap() }.last_stop = Some(rtc_instant);
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// }
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//
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// pub fn set_sleepdeep() {
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// unsafe { EXECUTOR.as_mut().unwrap() }.scb.set_sleepdeep();
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// }
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//
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// pub fn stop_wakeup_alarm() -> RtcInstant {
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// unsafe { EXECUTOR.as_mut().unwrap() }.rtc.unwrap().stop_wakeup_alarm()
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// }
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/// Thread mode executor, using WFE/SEV.
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///
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@ -57,54 +63,62 @@ pub fn stop_wakeup_alarm() -> RtcInstant {
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pub struct Executor {
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inner: raw::Executor,
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not_send: PhantomData<*mut ()>,
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scb: SCB,
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time_driver: &'static RtcDriver,
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}
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impl Executor {
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/// Create a new Executor.
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pub fn new() -> Self {
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Self {
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inner: raw::Executor::new(THREAD_PENDER as *mut ()),
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not_send: PhantomData,
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pub fn take() -> &'static mut Self {
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unsafe {
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assert!(EXECUTOR.is_none());
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EXECUTOR = Some(Self {
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inner: raw::Executor::new(THREAD_PENDER as *mut ()),
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not_send: PhantomData,
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scb: cortex_m::Peripherals::steal().SCB,
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time_driver: get_driver(),
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});
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EXECUTOR.as_mut().unwrap()
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}
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}
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unsafe fn on_wakeup_irq() {
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info!("on wakeup irq");
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unsafe fn on_wakeup_irq(&mut self) {
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trace!("low power: on wakeup irq");
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cortex_m::asm::bkpt();
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self.time_driver.resume_time();
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trace!("low power: resume time");
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}
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fn time_until_next_alarm(&self) -> Duration {
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Duration::from_secs(3)
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pub(self) fn stop_with_rtc(&mut self, rtc: &'static Rtc) {
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trace!("low power: stop with rtc configured");
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self.time_driver.set_rtc(rtc);
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crate::interrupt::typelevel::RTC_WKUP::unpend();
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unsafe { crate::interrupt::typelevel::RTC_WKUP::enable() };
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EXTI.rtsr(0).modify(|w| w.set_line(22, true));
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EXTI.imr(0).modify(|w| w.set_line(22, true));
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}
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fn get_scb() -> SCB {
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unsafe { cortex_m::Peripherals::steal() }.SCB
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}
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fn configure_pwr(&self) {
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trace!("configure_pwr");
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fn configure_pwr(&mut self) {
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trace!("low power: configure_pwr");
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self.scb.clear_sleepdeep();
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if !low_power_ready() {
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trace!("low power: configure_pwr: low power not ready");
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return;
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}
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let time_until_next_alarm = self.time_until_next_alarm();
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if time_until_next_alarm < THRESHOLD {
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if self.time_driver.pause_time().is_err() {
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trace!("low power: configure_pwr: time driver failed to pause");
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return;
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}
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trace!("low power stop required");
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critical_section::with(|_| {
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trace!("executor: set wakeup alarm...");
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start_wakeup_alarm(time_until_next_alarm);
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trace!("low power wait for rtc ready...");
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Self::get_scb().set_sleepdeep();
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});
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trace!("low power: enter stop...");
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self.scb.set_sleepdeep();
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}
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/// Run the executor.
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@ -126,11 +140,11 @@ impl Executor {
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///
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/// This function never returns.
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pub fn run(&'static mut self, init: impl FnOnce(Spawner)) -> ! {
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init(self.inner.spawner());
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init(unsafe { EXECUTOR.as_mut().unwrap() }.inner.spawner());
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loop {
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unsafe {
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self.inner.poll();
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EXECUTOR.as_mut().unwrap().inner.poll();
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self.configure_pwr();
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asm!("wfe");
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};
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@ -86,6 +86,8 @@ static CLOCK_REFCOUNT: AtomicU32 = AtomicU32::new(0);
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#[cfg(feature = "low-power")]
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pub fn low_power_ready() -> bool {
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trace!("clock refcount: {}", CLOCK_REFCOUNT.load(Ordering::SeqCst));
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CLOCK_REFCOUNT.load(Ordering::SeqCst) == 0
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}
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@ -1,6 +1,14 @@
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//! RTC peripheral abstraction
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mod datetime;
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#[cfg(feature = "low-power")]
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use core::cell::Cell;
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#[cfg(feature = "low-power")]
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use embassy_sync::blocking_mutex::raw::CriticalSectionRawMutex;
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#[cfg(feature = "low-power")]
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use embassy_sync::blocking_mutex::Mutex;
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pub use self::datetime::{DateTime, DayOfWeek, Error as DateTimeError};
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/// refer to AN4759 to compare features of RTC2 and RTC3
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@ -30,9 +38,73 @@ pub enum RtcError {
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NotRunning,
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}
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#[cfg(feature = "low-power")]
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/// Represents an instant in time that can be substracted to compute a duration
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struct RtcInstant {
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second: u8,
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subsecond: u16,
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}
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#[cfg(feature = "low-power")]
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impl RtcInstant {
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pub fn now() -> Self {
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let tr = RTC::regs().tr().read();
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let tr2 = RTC::regs().tr().read();
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let ssr = RTC::regs().ssr().read().ss();
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let ssr2 = RTC::regs().ssr().read().ss();
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let st = bcd2_to_byte((tr.st(), tr.su()));
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let st2 = bcd2_to_byte((tr2.st(), tr2.su()));
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assert!(st == st2);
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assert!(ssr == ssr2);
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let _ = RTC::regs().dr().read();
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let subsecond = ssr;
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let second = st;
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// trace!("rtc: instant now: st, ssr: {}, {}", st, ssr);
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Self { second, subsecond }
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}
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}
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#[cfg(feature = "low-power")]
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impl core::ops::Sub for RtcInstant {
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type Output = embassy_time::Duration;
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fn sub(self, rhs: Self) -> Self::Output {
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use embassy_time::{Duration, TICK_HZ};
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let second = if self.second < rhs.second {
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self.second + 60
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} else {
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self.second
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};
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// TODO: read prescaler
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let self_ticks = second as u32 * 256 + (255 - self.subsecond as u32);
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let other_ticks = rhs.second as u32 * 256 + (255 - rhs.subsecond as u32);
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let rtc_ticks = self_ticks - other_ticks;
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// trace!(
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// "rtc: instant sub: self, other, rtc ticks: {}, {}, {}",
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// self_ticks,
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// other_ticks,
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// rtc_ticks
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// );
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Duration::from_ticks(((rtc_ticks * TICK_HZ as u32) / 256u32) as u64)
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}
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}
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/// RTC Abstraction
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pub struct Rtc {
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rtc_config: RtcConfig,
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#[cfg(feature = "low-power")]
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stop_time: Mutex<CriticalSectionRawMutex, Cell<Option<RtcInstant>>>,
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}
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#[derive(Copy, Clone, Debug, PartialEq)]
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@ -108,8 +180,15 @@ impl Rtc {
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pub fn new(_rtc: impl Peripheral<P = RTC>, rtc_config: RtcConfig) -> Self {
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RTC::enable_peripheral_clk();
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#[cfg(not(feature = "low-power"))]
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let mut rtc_struct = Self { rtc_config };
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#[cfg(feature = "low-power")]
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let mut rtc_struct = Self {
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rtc_config,
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stop_time: Mutex::const_new(CriticalSectionRawMutex::new(), Cell::new(None)),
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};
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Self::enable();
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rtc_struct.configure(rtc_config);
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@ -1,67 +1,12 @@
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use stm32_metapac::rtc::vals::{Init, Osel, Pol};
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#[cfg(feature = "low-power")]
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use super::RtcInstant;
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use super::{sealed, RtcClockSource, RtcConfig};
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use crate::pac::rtc::Rtc;
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use crate::peripherals::RTC;
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use crate::rtc::sealed::Instance;
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#[cfg(all(feature = "time", any(stm32wb, stm32f4)))]
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pub struct RtcInstant {
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ssr: u16,
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st: u8,
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}
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#[cfg(all(feature = "time", any(stm32wb, stm32f4)))]
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impl RtcInstant {
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pub fn now() -> Self {
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// TODO: read value twice
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use crate::rtc::bcd2_to_byte;
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let tr = RTC::regs().tr().read();
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let tr2 = RTC::regs().tr().read();
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let ssr = RTC::regs().ssr().read().ss();
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let ssr2 = RTC::regs().ssr().read().ss();
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let st = bcd2_to_byte((tr.st(), tr.su()));
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let st2 = bcd2_to_byte((tr2.st(), tr2.su()));
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assert!(st == st2);
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assert!(ssr == ssr2);
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let _ = RTC::regs().dr().read();
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trace!("ssr: {}", ssr);
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trace!("st: {}", st);
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Self { ssr, st }
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}
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}
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#[cfg(all(feature = "time", any(stm32wb, stm32f4)))]
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impl core::ops::Sub for RtcInstant {
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type Output = embassy_time::Duration;
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fn sub(self, rhs: Self) -> Self::Output {
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use embassy_time::{Duration, TICK_HZ};
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let st = if self.st < rhs.st { self.st + 60 } else { self.st };
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// TODO: read prescaler
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let self_ticks = st as u32 * 256 + (255 - self.ssr as u32);
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let other_ticks = rhs.st as u32 * 256 + (255 - rhs.ssr as u32);
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let rtc_ticks = self_ticks - other_ticks;
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trace!("self, other, rtc ticks: {}, {}, {}", self_ticks, other_ticks, rtc_ticks);
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Duration::from_ticks(
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((((st as u32 * 256 + (255u32 - self.ssr as u32)) - (rhs.st as u32 * 256 + (255u32 - rhs.ssr as u32)))
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* TICK_HZ as u32) as u32
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/ 256u32) as u64,
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)
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}
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}
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#[allow(dead_code)]
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#[derive(Clone, Copy, Debug)]
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pub(crate) enum WakeupPrescaler {
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@ -144,15 +89,10 @@ impl super::Rtc {
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}
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}
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#[allow(dead_code)]
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#[cfg(all(feature = "time", any(stm32wb, stm32f4)))]
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/// start the wakeup alarm and return the actual duration of the alarm
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/// the actual duration will be the closest value possible that is less
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/// than the requested duration.
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///
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/// note: this api is exposed for testing purposes until low power is implemented.
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/// it is not intended to be public
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pub(crate) fn start_wakeup_alarm(&self, requested_duration: embassy_time::Duration) -> RtcInstant {
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#[cfg(feature = "low-power")]
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/// start the wakeup alarm and wtih a duration that is as close to but less than
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/// the requested duration, and record the instant the wakeup alarm was started
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pub(crate) fn start_wakeup_alarm(&self, requested_duration: embassy_time::Duration) {
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use embassy_time::{Duration, TICK_HZ};
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use crate::rcc::get_freqs;
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@ -174,37 +114,45 @@ impl super::Rtc {
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rtc_ticks as u64 * TICK_HZ * (<WakeupPrescaler as Into<u32>>::into(prescaler) as u64) / rtc_hz,
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);
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trace!("set wakeup timer for {} ms", duration.as_millis());
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self.write(false, |regs| {
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regs.cr().modify(|w| w.set_wutie(true));
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regs.cr().modify(|w| w.set_wute(false));
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regs.isr().modify(|w| w.set_wutf(false));
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while !regs.isr().read().wutwf() {}
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regs.cr().modify(|w| w.set_wucksel(prescaler.into()));
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regs.cr().modify(|w| w.set_wute(true));
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regs.cr().modify(|w| w.set_wutie(true));
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});
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RtcInstant::now()
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trace!("rtc: start wakeup alarm for {} ms", duration.as_millis());
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critical_section::with(|cs| assert!(self.stop_time.borrow(cs).replace(Some(RtcInstant::now())).is_none()))
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}
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#[allow(dead_code)]
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#[cfg(all(feature = "time", any(stm32wb, stm32f4)))]
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/// stop the wakeup alarm and return the time remaining
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///
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/// note: this api is exposed for testing purposes until low power is implemented.
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/// it is not intended to be public
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pub(crate) fn stop_wakeup_alarm(&self) -> RtcInstant {
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trace!("disable wakeup timer...");
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#[cfg(feature = "low-power")]
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/// stop the wakeup alarm and return the time elapsed since `start_wakeup_alarm`
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/// was called, otherwise none
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pub(crate) fn stop_wakeup_alarm(&self) -> Option<embassy_time::Duration> {
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use crate::interrupt::typelevel::Interrupt;
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trace!("rtc: stop wakeup alarm...");
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self.write(false, |regs| {
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regs.cr().modify(|w| w.set_wutie(false));
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regs.cr().modify(|w| w.set_wute(false));
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regs.isr().modify(|w| w.set_wutf(false));
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crate::pac::EXTI.pr(0).modify(|w| w.set_line(22, true));
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crate::interrupt::typelevel::RTC_WKUP::unpend();
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});
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RtcInstant::now()
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critical_section::with(|cs| {
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if let Some(stop_time) = self.stop_time.borrow(cs).take() {
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Some(RtcInstant::now() - stop_time)
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} else {
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None
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}
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})
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}
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#[allow(dead_code)]
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|
|
@ -14,6 +14,8 @@ use stm32_metapac::timer::regs;
|
|||
use crate::interrupt::typelevel::Interrupt;
|
||||
use crate::pac::timer::vals;
|
||||
use crate::rcc::sealed::RccPeripheral;
|
||||
#[cfg(feature = "low-power")]
|
||||
use crate::rtc::Rtc;
|
||||
use crate::timer::sealed::{Basic16bitInstance as BasicInstance, GeneralPurpose16bitInstance as Instance};
|
||||
use crate::{interrupt, peripherals};
|
||||
|
||||
|
|
@ -130,12 +132,14 @@ impl AlarmState {
|
|||
}
|
||||
}
|
||||
|
||||
struct RtcDriver {
|
||||
pub(crate) struct RtcDriver {
|
||||
/// Number of 2^15 periods elapsed since boot.
|
||||
period: AtomicU32,
|
||||
alarm_count: AtomicU8,
|
||||
/// Timestamp at which to fire alarm. u64::MAX if no alarm is scheduled.
|
||||
alarms: Mutex<CriticalSectionRawMutex, [AlarmState; ALARM_COUNT]>,
|
||||
#[cfg(feature = "low-power")]
|
||||
rtc: Mutex<CriticalSectionRawMutex, Cell<Option<&'static Rtc>>>,
|
||||
}
|
||||
|
||||
const ALARM_STATE_NEW: AlarmState = AlarmState::new();
|
||||
|
|
@ -144,6 +148,8 @@ embassy_time::time_driver_impl!(static DRIVER: RtcDriver = RtcDriver {
|
|||
period: AtomicU32::new(0),
|
||||
alarm_count: AtomicU8::new(0),
|
||||
alarms: Mutex::const_new(CriticalSectionRawMutex::new(), [ALARM_STATE_NEW; ALARM_COUNT]),
|
||||
#[cfg(feature = "low-power")]
|
||||
rtc: Mutex::const_new(CriticalSectionRawMutex::new(), Cell::new(None)),
|
||||
});
|
||||
|
||||
impl RtcDriver {
|
||||
|
|
@ -259,6 +265,117 @@ impl RtcDriver {
|
|||
let f: fn(*mut ()) = unsafe { mem::transmute(alarm.callback.get()) };
|
||||
f(alarm.ctx.get());
|
||||
}
|
||||
|
||||
#[cfg(feature = "low-power")]
|
||||
/// Set the rtc but panic if it's already been set
|
||||
pub(crate) fn set_rtc(&self, rtc: &'static Rtc) {
|
||||
critical_section::with(|cs| assert!(self.rtc.borrow(cs).replace(Some(rtc)).is_none()));
|
||||
}
|
||||
|
||||
#[cfg(feature = "low-power")]
|
||||
/// Compute the approximate amount of time until the next alarm
|
||||
fn time_until_next_alarm(&self) -> embassy_time::Duration {
|
||||
critical_section::with(|cs| {
|
||||
let now = self.now() + 32;
|
||||
|
||||
embassy_time::Duration::from_ticks(
|
||||
self.alarms
|
||||
.borrow(cs)
|
||||
.iter()
|
||||
.map(|alarm: &AlarmState| alarm.timestamp.get().saturating_sub(now))
|
||||
.min()
|
||||
.unwrap_or(u64::MAX),
|
||||
)
|
||||
})
|
||||
}
|
||||
|
||||
#[cfg(feature = "low-power")]
|
||||
/// Add the given offset to the current time
|
||||
fn add_time(&self, offset: embassy_time::Duration) {
|
||||
let offset = offset.as_ticks();
|
||||
let cnt = T::regs_gp16().cnt().read().cnt() as u32;
|
||||
let period = self.period.load(Ordering::SeqCst);
|
||||
|
||||
// Correct the race, if it exists
|
||||
let period = if period & 1 == 1 && cnt < u16::MAX as u32 / 2 {
|
||||
period + 1
|
||||
} else {
|
||||
period
|
||||
};
|
||||
|
||||
// Normalize to the full overflow
|
||||
let period = (period / 2) * 2;
|
||||
|
||||
// Add the offset
|
||||
let period = period + 2 * (offset / u16::MAX as u64) as u32;
|
||||
let cnt = cnt + (offset % u16::MAX as u64) as u32;
|
||||
|
||||
let (cnt, period) = if cnt > u16::MAX as u32 {
|
||||
(cnt - u16::MAX as u32, period + 2)
|
||||
} else {
|
||||
(cnt, period)
|
||||
};
|
||||
|
||||
let period = if cnt > u16::MAX as u32 / 2 { period + 1 } else { period };
|
||||
|
||||
self.period.store(period, Ordering::SeqCst);
|
||||
T::regs_gp16().cnt().write(|w| w.set_cnt(cnt as u16));
|
||||
|
||||
// Now, recompute all alarms
|
||||
critical_section::with(|cs| {
|
||||
for i in 0..ALARM_COUNT {
|
||||
let alarm_handle = unsafe { AlarmHandle::new(i as u8) };
|
||||
let alarm = self.get_alarm(cs, alarm_handle);
|
||||
|
||||
self.set_alarm(alarm_handle, alarm.timestamp.get());
|
||||
}
|
||||
})
|
||||
}
|
||||
|
||||
#[cfg(feature = "low-power")]
|
||||
/// Stop the wakeup alarm, if enabled, and add the appropriate offset
|
||||
fn stop_wakeup_alarm(&self) {
|
||||
critical_section::with(|cs| {
|
||||
if let Some(offset) = self.rtc.borrow(cs).get().unwrap().stop_wakeup_alarm() {
|
||||
self.add_time(offset);
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
#[cfg(feature = "low-power")]
|
||||
/// Pause the timer if ready; return err if not
|
||||
pub(crate) fn pause_time(&self) -> Result<(), ()> {
|
||||
/*
|
||||
If the wakeup timer is currently running, then we need to stop it and
|
||||
add the elapsed time to the current time
|
||||
*/
|
||||
self.stop_wakeup_alarm();
|
||||
|
||||
let time_until_next_alarm = self.time_until_next_alarm();
|
||||
if time_until_next_alarm < embassy_time::Duration::from_millis(250) {
|
||||
Err(())
|
||||
} else {
|
||||
critical_section::with(|cs| {
|
||||
self.rtc
|
||||
.borrow(cs)
|
||||
.get()
|
||||
.unwrap()
|
||||
.start_wakeup_alarm(time_until_next_alarm);
|
||||
});
|
||||
|
||||
T::regs_gp16().cr1().modify(|w| w.set_cen(false));
|
||||
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(feature = "low-power")]
|
||||
/// Resume the timer with the given offset
|
||||
pub(crate) fn resume_time(&self) {
|
||||
self.stop_wakeup_alarm();
|
||||
|
||||
T::regs_gp16().cr1().modify(|w| w.set_cen(true));
|
||||
}
|
||||
}
|
||||
|
||||
impl Driver for RtcDriver {
|
||||
|
|
@ -329,6 +446,11 @@ impl Driver for RtcDriver {
|
|||
}
|
||||
}
|
||||
|
||||
#[cfg(feature = "low-power")]
|
||||
pub(crate) fn get_driver() -> &'static RtcDriver {
|
||||
&DRIVER
|
||||
}
|
||||
|
||||
pub(crate) fn init() {
|
||||
DRIVER.init()
|
||||
}
|
||||
|
|
|
|||
|
|
@ -7,7 +7,7 @@ autobins = false
|
|||
|
||||
[features]
|
||||
stm32f103c8 = ["embassy-stm32/stm32f103c8", "not-gpdma"] # Blue Pill
|
||||
stm32f429zi = ["embassy-stm32/stm32f429zi", "chrono", "can", "not-gpdma", "dac-adc-pin"] # Nucleo "sdmmc"
|
||||
stm32f429zi = ["embassy-stm32/stm32f429zi", "chrono", "stop", "can", "not-gpdma", "dac-adc-pin"] # Nucleo "sdmmc"
|
||||
stm32g071rb = ["embassy-stm32/stm32g071rb", "not-gpdma", "dac-adc-pin"] # Nucleo
|
||||
stm32c031c6 = ["embassy-stm32/stm32c031c6", "not-gpdma"] # Nucleo
|
||||
stm32g491re = ["embassy-stm32/stm32g491re", "not-gpdma"] # Nucleo
|
||||
|
|
@ -17,6 +17,7 @@ stm32h563zi = ["embassy-stm32/stm32h563zi"] # Nucleo
|
|||
stm32u585ai = ["embassy-stm32/stm32u585ai"] # IoT board
|
||||
|
||||
sdmmc = []
|
||||
stop = ["embassy-stm32/low-power"]
|
||||
chrono = ["embassy-stm32/chrono", "dep:chrono"]
|
||||
can = []
|
||||
ble = ["dep:embassy-stm32-wpan", "embassy-stm32-wpan/ble"]
|
||||
|
|
@ -47,6 +48,7 @@ micromath = "2.0.0"
|
|||
panic-probe = { version = "0.3.0", features = ["print-defmt"] }
|
||||
rand_core = { version = "0.6", default-features = false }
|
||||
rand_chacha = { version = "0.3", default-features = false }
|
||||
static_cell = {version = "1.1", features = ["nightly"] }
|
||||
|
||||
chrono = { version = "^0.4", default-features = false, optional = true}
|
||||
|
||||
|
|
@ -87,6 +89,11 @@ name = "spi_dma"
|
|||
path = "src/bin/spi_dma.rs"
|
||||
required-features = []
|
||||
|
||||
[[bin]]
|
||||
name = "stop"
|
||||
path = "src/bin/stop.rs"
|
||||
required-features = [ "stop", "chrono",]
|
||||
|
||||
[[bin]]
|
||||
name = "timer"
|
||||
path = "src/bin/timer.rs"
|
||||
|
|
|
|||
53
tests/stm32/src/bin/stop.rs
Normal file
53
tests/stm32/src/bin/stop.rs
Normal file
|
|
@ -0,0 +1,53 @@
|
|||
// required-features: stop,chrono
|
||||
|
||||
#![no_std]
|
||||
#![no_main]
|
||||
#![feature(type_alias_impl_trait)]
|
||||
#[path = "../common.rs"]
|
||||
mod common;
|
||||
|
||||
use chrono::NaiveDate;
|
||||
use common::*;
|
||||
use cortex_m_rt::entry;
|
||||
use embassy_executor::Spawner;
|
||||
use embassy_stm32::low_power::{stop_with_rtc, Executor};
|
||||
use embassy_stm32::rtc::{Rtc, RtcClockSource, RtcConfig};
|
||||
use embassy_time::{Duration, Timer};
|
||||
use static_cell::make_static;
|
||||
|
||||
#[entry]
|
||||
fn main() -> ! {
|
||||
let executor = Executor::take();
|
||||
executor.run(|spawner| {
|
||||
unwrap!(spawner.spawn(async_main(spawner)));
|
||||
});
|
||||
}
|
||||
|
||||
#[embassy_executor::task]
|
||||
async fn async_main(_spawner: Spawner) {
|
||||
let mut config = config();
|
||||
|
||||
config.rcc.rtc = Some(RtcClockSource::LSI);
|
||||
|
||||
let p = embassy_stm32::init(config);
|
||||
info!("Hello World!");
|
||||
|
||||
let now = NaiveDate::from_ymd_opt(2020, 5, 15)
|
||||
.unwrap()
|
||||
.and_hms_opt(10, 30, 15)
|
||||
.unwrap();
|
||||
|
||||
let mut rtc = Rtc::new(p.RTC, RtcConfig::default());
|
||||
|
||||
rtc.set_datetime(now.into()).expect("datetime not set");
|
||||
|
||||
let rtc = make_static!(rtc);
|
||||
|
||||
stop_with_rtc(rtc);
|
||||
|
||||
info!("Waiting 5 seconds");
|
||||
Timer::after(Duration::from_secs(5)).await;
|
||||
|
||||
info!("Test OK");
|
||||
cortex_m::asm::bkpt();
|
||||
}
|
||||
Loading…
Reference in a new issue