GATT

Bluetooth Generic Attribute Profile (GATT) for Swift

Installation

GATT is available as a Swift Package Manager package. To use it, add the following dependency in your Package.swift:

.package(url: "https://github.com/PureSwift/GATT.git", branch: "master"),

and to your target, add GATT to your dependencies. You can then import GATT to get access to GATT functionality.

Platforms

Platform	Roles	Backend	Library
macOS, iOS, watchOS, tvOS, visionOS	Central, Peripheral	CoreBluetooth	DarwinGATT
Linux	Central, Peripheral	BlueZ	BluetoothLinux, GATT
Android	Central	Java Native Interface	AndroidBluetooth
WebAssembly	Central	Bluetooth Web API	BluetoothWeb
Pi Pico W	Peripheral	BlueKitchen BTStack	BTStack
ESP32	Peripheral	Apache NimBLE	NimBLE
nRF52840	Peripheral	Zephyr SDK	Zephyr

Usage

Peripheral

import Bluetooth
#if canImport(Darwin)
import DarwinGATT
#elseif os(Linux)
import BluetoothLinux
#endif

#if os(Linux)
typealias LinuxPeripheral = GATTPeripheral<BluetoothLinux.HostController, BluetoothLinux.L2CAPSocket>
guard let hostController = await HostController.default else {
    fatalError("No Bluetooth hardware connected")
}
let serverOptions = GATTPeripheralOptions(
    maximumTransmissionUnit: .max,
    maximumPreparedWrites: 1000
)
let peripheral = LinuxPeripheral(
    hostController: hostController,
    options: serverOptions,
    socket: BluetoothLinux.L2CAPSocket.self
)
#elseif canImport(Darwin)
let peripheral = DarwinPeripheral()
#else
#error("Unsupported platform")
#endif

// start advertising
try await peripheral.start()

Central

import Bluetooth
#if canImport(Darwin)
import DarwinGATT
#elseif os(Linux)
import BluetoothLinux
#endif

#if os(Linux)
typealias LinuxCentral = GATTCentral<BluetoothLinux.HostController, BluetoothLinux.L2CAPSocket>
let hostController = await HostController.default
let central = LinuxCentral(
    hostController: hostController,
    socket: BluetoothLinux.L2CAPSocket.self
)
#elseif canImport(Darwin)
let central = DarwinCentral()
#else
#error("Unsupported platform")
#endif

// start scanning
let stream = try await central.scan(filterDuplicates: true)
for try await scanData in stream {
    print(scanData)
    stream.stop()
}

Documentation

Read the documentation here. Documentation can be generated with DocC.

License

GATT is released under the MIT license. See LICENSE for details.