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authorScott Shawcroft <scott@adafruit.com>2020-10-14 11:12:26 -0700
committerGitHub <noreply@github.com>2020-10-14 11:12:26 -0700
commitcc8f8d860457db3dad0f186629eeeab7913e0a36 (patch)
treecec8cc11c7e5508631d07e9279c41f55dd264bd6
parent579e508769b5cd753a8dfee2d8c685b9fd2a1266 (diff)
parent56427d9abe7d905da7c11a3d935481bea23a78ff (diff)
Merge pull request #3549 from tannewt/stm_alarm_tweak
Fix stm sleep too long
-rw-r--r--ports/stm/supervisor/port.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/ports/stm/supervisor/port.c b/ports/stm/supervisor/port.c
index 79e4584b0..a8aab00ff 100644
--- a/ports/stm/supervisor/port.c
+++ b/ports/stm/supervisor/port.c
@@ -423,7 +423,7 @@ void port_interrupt_after_ticks(uint32_t ticks) {
alarm.AlarmMask = RTC_ALARMMASK_ALL;
}
- alarm.AlarmTime.SubSeconds = rtc_clock_frequency -
+ alarm.AlarmTime.SubSeconds = rtc_clock_frequency - 1 -
((raw_ticks % 1024) * 32);
alarm.AlarmTime.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
alarm.AlarmTime.StoreOperation = RTC_STOREOPERATION_SET;