Function configure 

pub fn configure(lpwr: LPWR<'static>) -> Sleep

Available on sleep_light_sleep only.

Creates resources for managing light/deep sleep with esp-rtos.

The returned Sleep struct contains the idle hook and a deep sleep handle, if deep sleep is supported.

Pass the idle hook to start_with_idle_hook to enable automatic light sleep.

Each time the scheduler runs out of ready tasks, the hook (with interrupts disabled) checks that:

• no WakeLock is held,
• all cores are idle,
• the next wakeup is at least ESP_RTOS_CONFIG_LIGHT_SLEEP_MIN_US microseconds away.

If all hold, it calls LowPower::sleep_light for the next wakeup; otherwise it falls back to WFI. The minimum-residency threshold is configurable via the ESP_RTOS_CONFIG_LIGHT_SLEEP_MIN_US build-time option (default 1000).

On multi-core chips, the core that commits to sleep hardware-stalls the other core(s) for the duration of the sleep so their CPU state is frozen and restored coherently, then thaws them on wakeup.

See WakeLock for the wake-lock contract that governs when sleeping is safe.