1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
.. currentmodule:: pyb
.. _pyb.Switch:
class Switch -- switch object
=============================
A Switch object is used to control a push-button switch.
Usage::
sw = pyb.Switch() # create a switch object
sw.value() # get state (True if pressed, False otherwise)
sw() # shorthand notation to get the switch state
sw.callback(f) # register a callback to be called when the
# switch is pressed down
sw.callback(None) # remove the callback
Example::
pyb.Switch().callback(lambda: pyb.LED(1).toggle())
Constructors
------------
.. class:: pyb.Switch()
Create and return a switch object.
Methods
-------
.. method:: Switch.__call__()
Call switch object directly to get its state: ``True`` if pressed down,
``False`` otherwise.
.. method:: Switch.value()
Get the switch state. Returns ``True`` if pressed down, otherwise ``False``.
.. method:: Switch.callback(fun)
Register the given function to be called when the switch is pressed down.
If ``fun`` is ``None``, then it disables the callback.
|
