Bluetooth uses the BLOB structure to pass or receive transport-specific data to the WSAQUERYSET structure during calls to the WSASetService or WSALookupService. functions. Bluetooth and connect: Bluetooth uses the connect function to connect to a target Bluetooth device, using a previously created Bluetooth socket. Bluetooth and getaddrinfo. May 05, 2016  Python Bluetooth Stack. The goal of this library is to be a pure-Python implementation of a Bluetooth LE host stack, geared towards, but not limited to, automated testing of Bluetooth devices such as Pebble smartwatches. Focussed on Bluetooth Low Energy (4.x) for now. Uses PyUSB to communicate with standard Bluetooth USB dongles. Tested on Mac. # Adafruit Python BluefruitLE. Python library to simplify access to Bluefruit LE (Bluetooth low energy) devices and services on Linux and Mac OSX. Hides all the platform-specific BLE code (using BlueZ on Linux and CoreBluetooth on Mac OSX) and provides a simpler syncronous BLE API which is great for scripts and other automated tasks using BLE.

Python library to simplify access to Bluefruit LE (Bluetooth low energy) devices and services on Linux and Mac OSX. Hides all the platform-specific BLE code (using BlueZ on Linux and CoreBluetooth on Mac OSX) and provides a simpler syncronous BLE API which is great for scripts and other automated tasks using BLE. For example you can create a program to read and write data (like sensor readings) with a Bluefruit LE device in UART mode.

See more details from the guide here: https://learn.adafruit.com/bluefruit-le-python-library/overview

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Note this library provides a Python wrapper for BLE Central Mode, meaning it can initiate connections and data exchanges with other BLE Peripherals. It does not allow you to emulate a BLE Peripheral via Python, or provide Python-based access to BLE peripherals connected to your system.

Be aware that this library is early in development! The examples show how to detect and interact with BLE UART devices which are the primary target of the library. More advanced features like getting advertisement data or interacting with other BLE services might not work or be currently supported. In particular BLE support for desktop operating systems is still somewhat buggy and spotty with support. The library has been developed and primarily tested on Python 2.7.x, but if there are issues with Python 3 please raise them so support can be added.

Supported Platforms

The library supports the following platforms:

• Linux, using the latest BlueZ 5.33 release. The library is implemented using BlueZ's experimental DBus bindings for access from languages such as Python.
• Mac OSX, using Apple's CoreBluetooth library. The library depends on PyObjC which Apple includes with their Python version on OSX. Note that if you're using a different Python, like the one provided by Homebrew, be sure to install PyObjC for that version of Python.

What about Windows support?

The library currently does not support Windows since BLE support is limited on that platform. Windows 7 does not support BLE at all. Windows 8 does not have BLE device search and pairing APIs.Windows 10 appears to have a more capable BLE API but it has not yet been invesigated to see if it can be supported by this library yet.

Linux & Raspberry Pi Requirements

On Linux (like with a Raspberry Pi) you'll need to compile and install the latest version of BlueZ, currently version 5.33,to gain access to the Bluetooth LE API it exposes. It's important to use this more recent version of BlueZ as the BLE APIs are still in development and a bit experimental.

Warning: Be careful compiling and installing a later version of BlueZ on top of an existing version if you usea Linux desktop OS like Ubuntu, Debian, etc. You might cause an issue with the new BlueZ version conflicting withthe distribution's older BlueZ installation and wreaking havoc with package dependencies. Ubuntu in particularcan get into a very bad state since core components depend on BlueZ. Look for a properly packaged BlueZ 5.33release for your distribution, or install into a virtual machine that can protect your desktop machine from conflicts.

The steps below describe how to install BlueZ 5.33 on a Raspberry Pi running its Raspbian operating system. In a terminal on the Raspberry Pi run:

Finally you'll need to make sure the bluetoothd daemon runs at boot and is run with the --experimental flag to enable all the BLE APIs. To do this edit the /etc/rc.local file and add the following line before the exit 0 at the end:

Save the changed file and reboot the Pi. Then verify using the command ps aux | grep bluetoothd that the bluetoothd daemon is running.

Mac OSX Requirements

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On Mac OSX you do not need to install any dependencies to start using the library (the PyObjC library should beinstalled already by Apple).

Installation

Once the requirements above have been met the library can be installed by running the following command inside its root directory:

or if you are behind a proxy and want the setup to use your environment variables:

This will install the library so it can be used by any script on your system.

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Alternatively you can run sudo python setup.py develop to have the library installed in develop mode where changes to the code (like doing a git pull) will immediately take effect without a reinstall.

After the library is installed examine the examples folder to see some examples of usage:

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• list_uarts.py - This example will print out any BLE UART devices that can be found and is a simple example of searching for devices.
• uart_service.py - This example will connect to the first BLE UART device it finds, send the string 'Hello World!' and then wait 60 seconds to receive a reply back. The example uses a simple syncronous BLE UART service implementation to send and receive data with the UART device.
• device_info.py - This example will connect to the first BLE UART device it finds and print out details from its device info service. Note this example only works on Mac OSX! Unfortunately a bug / design issue in the current BlueZ API prevents access to the device information service.
• low_level.py - This is a lower-level example that interacts with the services and characteristics of a BLE device directly. Just like the uart_service.py example this will connect to the first found UART device, send a string, and then print out messages that are received for one minute.

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To run an example be sure to run as the root user on Linux using sudo, for example to run the uart_service.py example:

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On Mac OSX the sudo prefix to run as root is not necessary.