[riot-notifications] [RIOT-OS/RIOT] drivers/periph: define rtc_mem and implement it for sam0_common (#16758)

benpicco notifications at github.com
Thu Sep 2 20:19:42 CEST 2021


Ah SAM L1x has the same RTC peripheral as SAM D5x (GP and Alarm registers are shared), but there is no second set of GP/Alarm registers. The RTC only supports a single alarm.

Since we use that alarm already, we can't use the GP register to store data.

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