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Python API for Homematic. Easy to use.
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README.rst

pmatic

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Python API for Homematic. Easy to use.

NOTICE: Project is no longer maintained. Please feel free to take over anything you like from this project. In case you'd like to continue developing pmatic here, please drop me a note.

The pmatic module provides access to the Homematic CCU which operates as the central unit in Homematic based home automation setups. You can use pmatic directly on the CCU or another system having Python installed. With pmatic you can write your own Python scripts to communicate with your CCU device.

What to do with pmatic?

  • Create even small (one line) scripts to read info or trigger actions.
  • Execute scripts on any linux system or directly on the CCU.
  • Edit scripts in your favorite editor, test on your workstation, deploy on another device, for example the CCU, later.
  • Code in a very beginner friendly language: Python.
  • Organize and control your scripts on the CCU using the pmatic manager

Why pmatic?

Before I built this API I tried to create a small script to just check all my window sensors, record the time they are opened and then alarm me to close the window if it was open for too long. No problem I thought. Lesson learned: It is possible. But only while having a huuuuge pain. The scripting language is crapy, the web GUI editor misses basic things like syntax highlighting, undo/redo, auto saving and so on which make programming comfortable. Last but not least the debugging was a pain or not possible at all.

Should be possible to make this a lot easier.

I found several other middlewares and libraries for accessing the CCU2 APIs, but most of them required to be executed in somehow specific environments, were not platform independet or implemented in other crapy programming languages.

I know sure there is still much room for improvement and cleaner APIs, but for the moment I think even this small API wrapper is an improvement.

So how does it work?

pmatic has been implemented in Python. What? Python is not available on the CCU2, do I need to run it remotely on a separate device now? Yes, you can. But it is also possible to use it on the CCU2 by installing a python interpreter with the necessary modules on the device. We'll get back to it later.

So you have the option to run your pmatic scripts remotely and on the CCU2. The code stays the same. This means you can develop your scripts on your workstation, test and debug it using a remote connection to your CCU2.

You can use all the API methods provided by the CCU2. The data is parsed and available as python lists or dicts. You can then process the data in your Python code and use the editor of your choice, use all possible debugging and profiling features you can imagine with Python.

It's so much fun :-).

Even if you write pmatic in Python, you can also execute custom ReGa (Homematic Script) through pmatic and also process the output of these scripts, if you like.

The pmatic manager provides you with a web GUI on your CCU which you can use to manage (upload, delete, test) your pmatic scripts with. You can also create scheduling plans in which situations your scripts should be executed automatically. This can currently be on manager startup, based on time or based on device events reported by the CCU. Take a look at the documentation for screenshots and more details.

Requirements

Pmatic is currently not expecting any special Python modules. pmatic is supported with Python 2.7, 3.4 and newer. Older versions of Python are not supported.

The pmatic package can be installed and used on the Homematic CCU2 device without any other requirements. The package ships whole Python installation and pmatic with it. Please note that pmatic will not work on the CCU1, because the ressources on the CCU1 are too limited.

There are some which are already use pmatic on Windows systems which have a Python interpreter installed. But I did not test it and I am pretty sure there are some changes needed to make it completely work. At least the pmatic Manager will not work without some changes.

At least the basic functionality of Pmatic has also been tested on OS X using Python 2.7 and 3.4 from MacPorts. But as for Windows the pmatic Manager has not been tested on OS X yet.

I am always open to support more platforms. So if one likes to add support for more, please let me know.

Installation

Take a look at the installation documentation.

Documentation

The current documentation can be found on the official web site of pmatic.

Usage

You can find several usage examples in the examples. I'll try to add more in the near future. Some more examples can be found in the documentation.

Just a short example:

#!/usr/bin/python

import pmatic
ccu = pmatic.CCU()

for device in ccu.devices.query(device_type="HM-Sec-SC"):
    print("%-20s %6s" % (device.name, device.is_open and "open" or "closed"))

What is planned?

Please take a look at the issue tracker and the TODO file.

What really is needed is specific support for the different Homematic devices. I added some specific classes for devices I have to the pmatic/devices.py but have not added properties and methods to reflect their individual features. And there are also a lot of devices I don't own. It would be really helpful if you could help out adding more devices to pmatic.

This will make it a lot easier to use pmatic. Because, for example calling device.is_battery_low is a lot more comfortable than digging into the details of a device and find out you have to call self.channels[4].values["FAULT_REPORTING"].formated() == "LOWBAT".

So please help adding more devices!

Changes

Please take a look at the changelog for a detailed list of changes.

Reporting Bugs, Feature Requests

Please use the issue tracker on the pmatic GitHub page.

Licensing

Copyright © 2016 Lars Michelsen lm@larsmichelsen.com. All rights reserved.

All outcome of the project is licensed under the terms of the GNU GPL v2. Take a look at the LICENSE file for details.

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