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-rw-r--r--src/attiny/ao_clock.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/src/attiny/ao_clock.c b/src/attiny/ao_clock.c
index b40f59d4..22de8e99 100644
--- a/src/attiny/ao_clock.c
+++ b/src/attiny/ao_clock.c
@@ -22,7 +22,6 @@ static volatile AO_TICK_TYPE ao_wakeup_count;
ISR(TIMER1_COMPA_vect)
{
- PORTB ^= 2;
++ao_tick_count;
if ((int16_t) (ao_tick_count - ao_wakeup_count) >= 0)
ao_wakeup((void *) &ao_tick_count);