Files
OpenCellular/chip/stm32
Alec Berg 3dffafac68 stm32f0: fix handling of RTC alarm 24 hour rollover
Fix bug in RTC module for stm32f0 in which it doesn't handle the
24 hour rollover appropriately and can cause a watchdog reset
if in deep sleep during rollover.

BUG=chrome-os-partner:36920
BRANCH=samus
TEST=add line to rtc_init()
STM32_RTC_TR = 0x00235952
This initializes RTC clock to 8 seconds before rollover. Using samus
make sure unit is allowed to go to deep sleep (S3/S5 and not charging)
and see that without this CL we watchdog most of the time, and with
this CL we don't watchdog ever.

Change-Id: I3f4b4b1ab7b2be1d4e344477d5eaaa0dc916773a
Signed-off-by: Alec Berg <alecaberg@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/251852
Reviewed-by: Alexandru Stan <amstan@chromium.org>
2015-02-22 01:45:29 +00:00
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