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3 Commits

Author SHA1 Message Date
Damien George 80883a82c0 stm32/adc: Deselect VBAT after reading to prevent battery drain. 
Signed-off-by: Damien George <damien@micropython.org>
 2020-12-18 13:32:02 +11:00
Damien George cc2a35b7b2 stm32/rtc: Validate the RTC prescaler on boot and change if incorrect. 
Devices with RTC backup-batteries have been shown (very rarely) to have
incorrect RTC prescaler values.  Such incorrect values mean the RTC counts
fast or slow, and will be wrong forever if the power/backup-battery is
always present.

This commit detects such a state at start up (hard reset) and corrects it
by reconfiguring the RTC prescaler values.

Signed-off-by: Damien George <damien@micropython.org>
 2020-11-13 11:23:52 +11:00
Damien George f96f53cd97 stm32/boards: Add stm32??xx_hal_conf_base.h files with common settings. 
These are intended to be used by all boards, to reduce the size of a
board's configuration.
 2019-06-25 14:18:24 +10:00