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OLA Python API: Difference between revisions
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== Building the Python Bindings == | == Building the Python Bindings == | ||
You should install readline if you haven't already: | |||
<pre> | |||
sudo easy_install readline | |||
</pre> | |||
You need the python version of protocol buffers installed. | You need the python version of protocol buffers installed. | ||
Revision as of 00:45, 20 January 2011
Building the Python Bindings
You should install readline if you haven't already:
sudo easy_install readline
You need the python version of protocol buffers installed.
See Building OLA but run
$ ./configure --enable-python-libs
Check where the modules are going to be installed:
$ grep ^pythondir config.log pythondir='/Library/Python/2.5/site-packages'
Run the usual: make, make check, make install.
Check that the modules have been installed correctly in the $pythondir above.
Check that $pythondir appears in sys.path:
$ python -c "import sys; print sys.path"
If it doesn't add it to $PYTHONPATH:
$ export PYTHONPATH=$PYTHONPATH:/path/to/your/install/dir
You probably want to put this line in your shell .rc file.
Interesting Classes
- ClientWrapper
- A helper class that connects to the server and creates a new OlaClient
- OlaClient
- The main API
The best documentation is the set of example programs in the python/examples directory.
Sending DMX
A simple example to send DMX:
import array
from ola.ClientWrapper import ClientWrapper
def DmxSent(state):
wrapper.Stop()
universe = 1
data = array.array('B')
data.append(10)
data.append(50)
data.append(255)
wrapper = ClientWrapper()
client = wrapper.Client()
client.SendDmx(universe, data, DmxSent)
wrapper.Run()
Receiving DMX
Here is some code to receive DMX on universe 1.
from ola.ClientWrapper import ClientWrapper def NewData(data): print data universe = 1 wrapper = ClientWrapper() client = wrapper.Client() client.RegisterUniverse(universe, client.REGISTER, NewData) wrapper.Run()
