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Bluetooth Low Energy (BLE) Library for Python

Project Description

# bleep

A BLE abstraction layer for Python inspired by [bleat]( Currently only supports Linux, with experimental support for Mac OS X.

## Current Support

  • Discovering devices
  • Reading advertising data
  • Connecting to devices
  • Discovering services, characteristics and descriptors
  • Read from characteristics

## Installation

### Linux

First, install my fork of pygattlib and its dependencies:

`bash sudo apt-get install libboost-python-dev libboost-thread-dev libbluetooth-dev libglib2.0-dev python-dev `

You should also make sure that your version of libbluetooth is at least 4.101:

`bash apt-cache policy libbluetooth-dev | grep Installed `

Then, clone the repository, and install the python package.

`bash git clone cd pygattlib sudo python install `

This will build the dynamic library, and install the python package.

You can then install bleep easily:

`bash sudo pip install bleep `

If you want to develop bleep, instead of the last line, run:

` sudo python develop `

This will cause any changes you make to bleep to be reflected when you import the library.

> NOTE: You may need to run all BLE code with sudo, even when using the Python interactive shell.

### Mac OS X

Installation on Mac OS X is very simple:

`bash git clone cd bleep sudo python install `

Likewise, if you would like to develop bleep, run this instead of the last line:

`bash sudo python develop `

## Examples


You can run to see all of the services, characteristics and descriptors attached to a device with a specific mac address. In order to find the device’s mac address, you could use hcitool lescan, or use BLEDevice.discoverDevices().

` usage: [-h] mac `

## Usage

### Include bleep

`python >>> from bleep import BLEDevice `

### Scan for devices

`python >>> devices = BLEDevice.discoverDevices() >>> devices [Device Name:  (5A:79:8E:91:83:1C), Device Name:  (C1:20:68:1B:00:26), Device Name: BLE Keyboard (C9:E8:56:3B:4D:B1), Device Name:  (4C:25:F5:C2:E6:61), Device Name:  (60:03:08:B2:47:F1), Device Name:  (C1:62:3A:1D:00:14)] `

This will return a list of Device objects, however you won’t be connected to any of them, so pick one you like, and connect to it:

`python >>> device = devices[2] >>> device.connect() `

You can then access the device’s services:

`python >>> [Generic Access, Generic Attribute, Device Information, Battery Service, Human Interface Device] `

each service’s characteristics

`python >>> service =[4] >>> service Human Interface Device >>> service.characteristics [HID Information, Report Map, Protocol Mode, HID Control Point, Report, Report] `

and each characteristic’s descriptors

`python >>> char = service.characteristics[4] >>> char Report >>> char.descriptors [Client Characteristic Configuration, Report Reference] `

### Useful Functionality

BLEDevice.discoverDevices supports parameters which allow you to specify which BLE device to connect to (ignored on OSes other than Linux), how long to sample for, as well as a function which returns a boolean value, allowing you to cherry-pick your devices.

`python def discoverDevices(device='hci0', timeout=5, filter=lambda x: True) `

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