bleak 0.4.0

Bluetooth Low Energy platform Agnostic Klient

bleak

Bleak is an acronym for Bluetooth Low Energy platform Agnostic Klient.

• Free software: MIT license

• Documentation: https://bleak.readthedocs.io.

Bleak is a GATT client software, capable of connecting to BLE devices acting as GATT servers. It is designed to provide a asynchronous, cross-platform Python API to connect and communicate with e.g. sensors.

Be warned: Bleak is still in an early state of implementation.

Installation

$ pip install bleak

Features

• Supports Windows 10, version 16299 (Fall Creators Update) or greater

• Supports Linux distributions with BlueZ >= 5.43

• Plans on macOS support via Core Bluetooth API (see develop branch for progress)

Bleak supports reading, writing and getting notifications from GATT servers, as well as a function for discovering BLE devices.

Usage

To discover Bluetooth devices that can be connected to:

import asyncio
from bleak import discover

async def run():
    devices = await discover()
    for d in devices:
        print(d)

loop = asyncio.get_event_loop()
loop.run_until_complete(run())

Connect to a Bluetooth device and read its model number:

import asyncio
from bleak import BleakClient

address = "24:71:89:cc:09:05"
MODEL_NBR_UUID = "00002a24-0000-1000-8000-00805f9b34fb"

async def run(address, loop):
    async with BleakClient(address, loop=loop) as client:
        model_number = await client.read_gatt_char(MODEL_NBR_UUID)
        print("Model Number: {0}".format("".join(map(chr, model_number))))

loop = asyncio.get_event_loop()
loop.run_until_complete(run(address, loop))

See examples folder for more code, among other example code for connecting to a TI SensorTag CC2650

History

0.3.0 (2019-03-18)

• Fix for issue #53: Windows and Python 3.7 error

• Azure Pipelines used for CI

0.2.4 (2018-11-30)

• Fix for issue #52: Timing issue getting characteristics

• Additional fix for issue #51.

• Bugfix for string method for BLEDevice.

0.2.3 (2018-11-28)

• Fix for issue #51: dpkg-query not found on all Linux systems

0.2.2 (2018-11-08)

• Made it compliant with Python 3.5 by removing f-strings

0.2.1 (2018-06-28)

• Improved logging on .NET discover method

• Some type annotation fixes in .NET code

0.2.0 (2018-04-26)

• Project added to Github

• First version on PyPI.

• Working Linux (BlueZ DBus API) backend.

• Working Windows (UWP Bluetooth API) backend.

0.1.0 (2017-10-23)

• Bleak created.