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stm32: flesh out lp executor

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This commit is contained in:
xoviat
2023-08-24 19:29:11 -05:00
parent ecc305bbfe
commit cda4047310
5 changed files with 133 additions and 20 deletions
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25
embassy-stm32/src/rtc/v2.rs
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@ -30,9 +30,6 @@ impl RtcInstant {
let _ = RTC::regs().dr().read();
trace!("ssr: {}", ssr);
trace!("st: {}", st);
Self { ssr, st }
}
}
@ -52,7 +49,12 @@ impl core::ops::Sub for RtcInstant {
let other_ticks = rhs.st as u32 * 256 + (255 - rhs.ssr as u32);
let rtc_ticks = self_ticks - other_ticks;
trace!("self, other, rtc ticks: {}, {}, {}", self_ticks, other_ticks, rtc_ticks);
trace!(
"rtc: instant sub: self, other, rtc ticks: {}, {}, {}",
self_ticks,
other_ticks,
rtc_ticks
);
Duration::from_ticks(
((((st as u32 * 256 + (255u32 - self.ssr as u32)) - (rhs.st as u32 * 256 + (255u32 - rhs.ssr as u32)))
@ -174,10 +176,10 @@ impl super::Rtc {
rtc_ticks as u64 * TICK_HZ * (<WakeupPrescaler as Into<u32>>::into(prescaler) as u64) / rtc_hz,
);
trace!("set wakeup timer for {} ms", duration.as_millis());
trace!("rtc: set wakeup timer for {} ms", duration.as_millis());
self.write(false, |regs| {
regs.cr().modify(|w| w.set_wutie(true));
// regs.cr().modify(|w| w.set_wutie(true));
regs.cr().modify(|w| w.set_wute(false));
regs.isr().modify(|w| w.set_wutf(false));
@ -187,6 +189,15 @@ impl super::Rtc {
regs.cr().modify(|w| w.set_wute(true));
});
self.write(false, |regs| {
regs.cr().modify(|w| w.set_wutie(false));
regs.isr().modify(|w| w.set_wutf(false));
crate::pac::PWR.cr1().modify(|w| w.set_cwuf(false));
regs.cr().modify(|w| w.set_wutie(true));
});
RtcInstant::now()
}
@ -197,7 +208,7 @@ impl super::Rtc {
/// note: this api is exposed for testing purposes until low power is implemented.
/// it is not intended to be public
pub(crate) fn stop_wakeup_alarm(&self) -> RtcInstant {
trace!("disable wakeup timer...");
trace!("rtc: stop wakeup alarm...");
self.write(false, |regs| {
regs.cr().modify(|w| w.set_wute(false));