Struct Characteristic 

pub struct Characteristic { /* private fields */ }

A Bluetooth GATT characteristic.

Implementations

impl Characteristic

pub fn uuid(&self) -> Uuid

The Uuid identifying the type of this GATT characteristic.

pub async fn uuid_async(&self) -> Result<Uuid>

This method is kept for compatibility with bluest.

pub async fn properties(&self) -> Result<CharacteristicProperties>

The properties of this this GATT characteristic.

Characteristic properties indicate which operations (e.g. read, write, notify, etc) may be performed on this characteristic.

pub async fn value(&self) -> Result<Vec<u8>>

The cached value of this characteristic. Returns an error if the value has not yet been read.

pub async fn read(&self) -> Result<Vec<u8>>

Read the value of this characteristic from the device.

pub async fn write(&self, value: &[u8]) -> Result<()>

Write value to this characteristic on the device and request the device to return a response indicating a successful write.

pub async fn write_without_response(&self, value: &[u8]) -> Result<()>

Write value to this characteristic on the device without requesting a response.

pub fn max_write_len(&self) -> Result<usize>

Get the maximum amount of data that can be written in a single packet for this characteristic.

The Android API does not provide a method to query the current MTU value directly; instead, BluetoothGatt.requestMtu() may be called in Adapter::connect_device to have a possible maximum MTU in the callback. This can be configured with crate::AdapterConfig::request_mtu_on_connect.

pub async fn max_write_len_async(&self) -> Result<usize>

This method is kept for compatibility with bluest.

pub async fn notify( &self, ) -> Result<impl Stream<Item = Result<Vec<u8>>> + Send + Unpin + '_>

Enables notification of value changes for this GATT characteristic.

Returns a stream of values for the characteristic sent from the device.

pub async fn is_notifying(&self) -> Result<bool>

Is the device currently sending notifications for this characteristic?

pub async fn discover_descriptors(&self) -> Result<Vec<Descriptor>>

This method is kept for compatibility with bluest.

pub async fn descriptors(&self) -> Result<Vec<Descriptor>>

Get previously discovered descriptors.

Trait Implementations

impl Clone for Characteristic

fn clone(&self) -> Characteristic

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Characteristic

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

Formats the value using the given formatter.

impl Hash for Characteristic

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Characteristic

fn eq(&self, other: &Self) -> 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 Eq for Characteristic