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Bluetooth Low Energy platform Agnostic Klient

Project description

bleak

Bleak Logo

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

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

0.4.2 (2019-05-17)

  • Fix for missed part of PR #61.

0.4.1 (2019-05-17)

  • Merging of PR #61, improvements and fixes for multiple issues for BlueZ backend
  • Implementation of issue #57
  • Fixing issue #59
  • Documentation fixes.

0.4.0 (2019-04-10)

  • Transferred code from the BleakUWPBridge C# support project to pythonnet code
  • Fixed BlueZ >= 5.48 issues regarding Battery Service
  • Fix for issue #55

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.

Project details


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