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This commit is contained in:
ivmarkov
2022-10-24 11:10:59 +03:00
parent 4d5550070f
commit f78c706b89
3 changed files with 34 additions and 22 deletions
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20
embassy-rp/src/timer.rs
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@ -71,13 +71,6 @@ impl Driver for TimerDriver {
fn set_alarm(&self, alarm: AlarmHandle, timestamp: u64) -> bool {
let n = alarm.id() as usize;
critical_section::with(|cs| {
let now = self.now();
// If alarm timestamp has passed don't set the alarm and return `false` to indicate that.
if timestamp <= now {
return false;
}
let alarm = &self.alarms.borrow(cs)[n];
alarm.timestamp.set(timestamp);
@ -87,7 +80,18 @@ impl Driver for TimerDriver {
// it is checked if the alarm time has passed.
unsafe { pac::TIMER.alarm(n).write_value(timestamp as u32) };
true
let now = self.now();
if timestamp <= now {
// If alarm timestamp has passed the alarm will not fire.
// Disarm the alarm and return `false` to indicate that.
unsafe { pac::TIMER.armed().write(|w| w.set_armed(1 << n)) }
alarm.timestamp.set(u64::MAX);
false
} else {
true
}
})
}
}