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sched: Don't shutdown on a "timer in the past" if already shutdown

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A shutdown will not help if the mcu is already in a shutdown state.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2017-10-11 22:01:45 -04:00
parent 3b9b4e4d6f
commit 744c6d114e
4 changed files with 5 additions and 6 deletions
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2
src/avr/timer.c
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@ -195,7 +195,7 @@ ISR(TIMER1_COMPA_vect)
irq_disable();
uint16_t now = timer_get();
if ((int16_t)(next - now) < (int16_t)(-timer_from_us(1000)))
shutdown("Rescheduled timer in the past");
try_shutdown("Rescheduled timer in the past");
if (sched_tasks_busy()) {
timer_repeat_set(now + TIMER_REPEAT_TICKS);
next = now + TIMER_DEFER_REPEAT_TICKS;