knx 0.2.1

KNX / EIB library

A minimalistic KNX / EIB python library.

Sending telegrams

This library can be used to send data telegrams to actuators in the bus system.

For example in order to turn on a light the following code could be used:

>>> from knx import connect
>>> with connect() as c:
...     c.write('0/1/14', 1)

Where 0/1/14 is the address of the light and 1 is the payload of the data telegram which indicates that the light should be turned on.

Listening to telegrams

This KNX library can also be used to listen to telegrams that are sent onto the bus system. For example if you simply want to log an entry each time a light is turned off or on:

>>> import knx
>>> import asyncio

>>> @knx.coroutine
... def logger():
...     while True:
...         telegram = (yield)
...         print('Telegram from {0} sent to {1} with value: {2}'.format(
...               telegram.src, telegram.dst, telegram.value))

>>> loop = asyncio.get_event_loop()
>>> k = knx.AsyncKnx(host='localhost', port=6720)
>>> loop.run_until_complete(k.listen(logger()))

Install & Requirements

• Python >= 3.4

Install using pip:

$ pip install knx

Disclaimer

I’ve only tested this with eibd 0.0.5 as a gateway.

Alternatives

If you’re looking for complete home automation solutions you might want to take a look at home-assistant or smarthome.

Development

In order to setup a sandboxed development environment use buildout:

1. Create a virtual environment to have a python without any third-party packages in it’s sys.path: (Kinda Optional):

   python -m venv .venv

2. Run bootstrap.py:

   .venv/bin/python bootstrap.py

3. Run bin/buildout:

   bin/buildout

Once these steps are done you’ll be able to run tests using bin/test.