[riot-notifications] [RIOT-OS/RIOT] drivers/lis2dh12: clean up API (#16328)

benpicco notifications at github.com
Thu Jun 3 12:28:37 CEST 2021


Ok, this is due to the stale event reporting - the CPU is faster than the sensor at updating the register.
I've added an option to ignore the stale events.

The stale events are needed if the interrupt is used to wake the CPU from Deep Sleep - here we *want* to read the old event that caused the wake-up. 

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