Enum AlarmWakeMode 

pub enum AlarmWakeMode {
    WfiOnly,
    DormantOnly,
    Both,
    Disabled,
}

Alarm wake mode configuration

Controls which low-power wake mechanisms are enabled for the alarm.

Variants

WfiOnly

Wake from WFI/WFE only (interrupt-based via POWMAN_IRQ_TIMER)

This is the default and most common mode. The alarm triggers an interrupt that wakes the CPU from light sleep (WFI/WFE). Works with both XOSC and LPOSC.

DormantOnly

Wake from DORMANT mode only (hardware power-up via PWRUP_ON_ALARM)

The alarm wakes the chip from deep sleep (DORMANT) by triggering a hardware power-up event. No interrupt is used since the CPU clock is stopped in DORMANT.

Requirements:

• Must use LPOSC clock source (XOSC is powered down in DORMANT)
• Requires Secure privilege level (TIMER register is Secure-only)
• May fail silently in Non-secure contexts

Both

Wake from both WFI/WFE and DORMANT modes

Enables both interrupt-based wake (WFI/WFE) and hardware power-up wake (DORMANT). Subject to the same requirements as DormantOnly for DORMANT wake support.

Disabled

Alarm fires but doesn’t wake (manual polling only)

The alarm flag is set in hardware but no wake mechanisms are enabled. Use alarm_fired() to manually poll the alarm status.

Trait Implementations

impl Clone for AlarmWakeMode

fn clone(&self) -> AlarmWakeMode

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for AlarmWakeMode

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Format for AlarmWakeMode

fn format(&self, f: Formatter<'_>)

Writes the defmt representation of self to fmt.

impl PartialEq for AlarmWakeMode

fn eq(&self, other: &AlarmWakeMode) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for AlarmWakeMode

impl Eq for AlarmWakeMode

impl StructuralPartialEq for AlarmWakeMode