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Elementary Bluetooth using PyObjC

Bluetooth connectivity to devices is supported on Mac OS X using Cocoa APIs, so is possible to access from Python. Bluetooth itself opens up a large body of knowledge that I am only starting to investigate.

This article outlines some basics for using Bluetooth in Python.

Bluetooth access is achieved through two frameworks, IOBluetooth and IOBluetoothUI. Neither of these are included in PyObjC by default, so a basic wrapper class makes life easier. (see the PyObjC docs)

Add the following to

import objc as _objc

_objc.loadBundle('IOBluetooth', globals(),\

The loadBundle pattern is very useful, and allows the classes from any Objective C framework to be loaded into the PyObjC bridge. By putting it into a separate Python module, usage becomes less painful.

For example, the most recent device is:

>>> from IOBluetooth import *
>>> devs = IOBluetoothDevice.recentDevices_(1)
>>> devs[0].getNameOrAddress()
u'gmwils 6600'
>>> devs[0].isConnected()

In this case, my Nokia 6600 is still connected in AddressBook.

To create a new connection to a device, Apple provides access to their user interface for Bluetooth management. It is strongly recommended that these controls are used to provide consistency for the user and detailed error handling.

For example, selecting a service from a device with a dialog:

>>> from IOBluetoothUI import *
>>> browser = IOBluetoothServiceBrowserController.serviceBrowserController_(0)
>>> browser.runModal()
>>> results = browser.getResults()
>>> results[0].getServiceName()
u'Bluetooth Serial Port'

Note: you will need a IOBluetoothUI wrapper, similar to the IOBluetooth wrapper from earlier.

Useful documentation links: