PWER_RTC
mask = PWER_RTC;
mask = PWER_RTC;
PWER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET) | PWER_RTC;
if (resume_on_alarm && (PEDR & PWER_RTC))
is_resume |= PWER_RTC;
PWER |= PWER_RTC;
PWER &= ~PWER_RTC;