Buttons¶

There are two buttons on the board, called button_a and button_b.

Attributes¶

button_a¶: A Button instance (see below) representing the left button.

button_b¶: Represents the right button.

Classes¶

class Button¶

Represents a button.

注解

This class is not actually available to the user, it is only used by the two button instances, which are provided already initialized.

is_pressed()¶: Returns True if the specified button button is pressed, and False otherwise.

was_pressed()¶: Returns True or False to indicate if the button was pressed since the device started or the last time this method was called.

get_presses()¶: Returns the running total of button presses, and resets this total to zero before returning.

Example¶

import microbit

while True:
    if microbit.button_a.is_pressed() and microbit.button_b.is_pressed():
        microbit.display.scroll("AB")
        break
    elif microbit.button_a.is_pressed():
        microbit.display.scroll("A")
    elif microbit.button_b.is_pressed():
        microbit.display.scroll("B")
    microbit.sleep(100)