These are the devices that receive key commands from some external source and route them to your applications.
At the input system core, there's
InputListener. It receives key events from drivers you use and routes them to currently active application.
Available input drivers:
i variable you have supplied by
load_app() in your applications is an
InputProxy instance. It's operating on key names, such as "KEY_ENTER" or "KEY_UP". You can assign callback once a keypress with a matching keyname is received, which is as simple as
You can also set a dictionary of
"keyname":callback_function mappings, this would be called a keymap.
.. automodule:: input.input
.. autoclass:: InputProxy :members: :special-members:
Sample usage - it should rarely be necessary for you to set callbacks directly, as this is mostly taken care of by the UI elements.
i.stop_listen() i.clear_keymap() #Useful because there might be callbacks left from whatever your function was called by #... Set your callbacks i.set_callback("KEY_ENTER", my_function) i.listen()
.. toctree:: :maxdepth: 2 input/hid.rst input/pcf8574.rst input/pifacecad.rst input/adafruit.rst input/pi_gpio.rst