类 Switch – 开关对象¶
Switch 对象用于控制按钮开关。
用法:
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
例子:
pyb.Switch().callback(lambda: pyb.LED(1).toggle())