pub const SPINEL_PROP_BASE_EXT__BEGIN: _bindgen_ty_24 = 4096;
Expand description
NCP’s MCU Power State ** Format: ’C`
- Required capability: CAP_MCU_POWER_SAVE
- This property specifies the desired power state of NCP’s micro-controller
- (MCU) when the underlying platform’s operating system enters idle mode (i.e.,
- all active tasks/events are processed and the MCU can potentially enter a
- energy-saving power state).
- The power state primarily determines how the host should interact with the NCP
- and whether the host needs an external trigger (a “poke”) to NCP before it can
- communicate with the NCP or not. After a reset, the MCU power state MUST be
- SPINEL_MCU_POWER_STATE_ON.
- Enumeration
spinel_mcu_power_state_t
defines the valid values - (
SPINEL_MCU_POWER_STATE_*
constants): SPINEL_MCU_POWER_STATE_ON
: NCP’s MCU stays on and active all the time.- When the NCP’s desired power state is set to this value, host can send
- messages to NCP without requiring any “poke” or external triggers. MCU is
- expected to stay on and active. Note that the
ON
power state only - determines the MCU’s power mode and is not related to radio’s state.
SPINEL_MCU_POWER_STATE_LOW_POWER
: NCP’s MCU can enter low-power- (energy-saving) state. When the NCP’s desired power state is set to
LOW_POWER
, host is expected to “poke” the NCP (e.g., an external trigger- like an interrupt) before it can communicate with the NCP (send a message
- to the NCP). The “poke” mechanism is determined by the platform code (based
- on NCP’s interface to the host).
- While power state is set to
LOW_POWER
, NCP can still (at any time) send - messages to host. Note that receiving a message from the NCP does NOT
- indicate that the NCP’s power state has changed, i.e., host is expected to
- continue to “poke” NCP when it wants to talk to the NCP until the power
- state is explicitly changed (by setting this property to
ON
). - Note that the
LOW_POWER
power state only determines the MCU’s power mode - and is not related to radio’s state.
SPINEL_MCU_POWER_STATE_OFF
: NCP is fully powered off.- An NCP hardware reset (via a RESET pin) is required to bring the NCP back
- to
SPINEL_MCU_POWER_STATE_ON
. RAM is not retained after reset.
*/