[Zamoth_bg]

Hello

I wish to use the n95 accelerator for a interface I am developing. The problem that the built-in filters that come with Python do not suffice for me and I want to fine tune myself the input. So I want to extend EventFilter and embed all the logic needed for filtering there. Problem is I am not that good with Python, neither with developing on n95. So I read the Python documentation but I do not understand it.

class EventFilter
The EventFilter class provides a generic interface for event filters. The default implementation
only passes events on, i.e. events are not filtered. Classes deriving from EventFilter can decide
if an event should be delivered at all as well as they can alter the data that is passed on to the
So far so good. I understand it so far.
callback.
callback
This is where the event filter's callback is stored. In case the EventFilter object is used
together with a Sensor object, the Sensor object will handle correct setting of this variable.
I do not understand the second sentence. What is suppose to be that object? A function?
init ()
Initialises the event filter object. The callback member is initialised to None.
del ()
Destructs the event filter object. This method calls cleanup, which can be overridden by
deriving classes to clean up resources.
event(data)
This method is the place where event filtering takes place, and hence this method should be
overridden by deriving classes.ok Overridden event methods can deliver their own data to the
callback; the data delivered may be data Is that "data" some specific kind of object? or any other set of data. In case the event is decided
to be delivered, overriding instances should call self.callback, which by default takes one
argument. Ok if we have true call the callback, if not no. But what kind of input do I get? Is "data" the input? What is it? Is it x,y,z also?
cleanup()
Cleans up any resources needed by the event lter. The default implementation does not need
this feature. This method is called by the destructor del .Ok I understand.


Ok... If someone can help me with the previous question in bold that will be great. Also if someone can write me a small simple code how the event method should work that would be very helpful.