66 lines
1.9 KiB
Python
66 lines
1.9 KiB
Python
# CircuitPlaygroundExpress_HIDKeyboard
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import time
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import board
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from adafruit_hid.keyboard import Keyboard
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from adafruit_hid.keyboard_layout_us import KeyboardLayoutUS
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from adafruit_hid.keycode import Keycode
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from digitalio import DigitalInOut, Direction, Pull
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# A simple neat keyboard demo in circuitpython
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# The button pins we'll use, each will have an internal pulldown
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buttonpins = [board.BUTTON_A, board.BUTTON_B]
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# our array of button objects
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buttons = []
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# The keycode sent for each button, will be paired with a control key
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buttonkeys = [Keycode.A, "Hello World!\n"]
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controlkey = Keycode.SHIFT
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# the keyboard object!
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# sleep for a bit to avoid a race condition on some systems
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time.sleep(1)
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kbd = Keyboard()
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# we're americans :)
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layout = KeyboardLayoutUS(kbd)
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# make all pin objects, make them inputs w/pulldowns
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for pin in buttonpins:
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button = DigitalInOut(pin)
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button.direction = Direction.INPUT
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button.pull = Pull.DOWN
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buttons.append(button)
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led = DigitalInOut(board.D13)
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led.direction = Direction.OUTPUT
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print("Waiting for button presses")
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while True:
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# check each button
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# when pressed, the LED will light up,
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# when released, the keycode or string will be sent
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# this prevents rapid-fire repeats!
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for button in buttons:
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if button.value: # pressed?
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i = buttons.index(button)
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print("Button #%d Pressed" % i)
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# turn on the LED
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led.value = True
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while button.value:
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pass # wait for it to be released!
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# type the keycode or string
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k = buttonkeys[i] # get the corresp. keycode/str
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if isinstance(k, str):
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layout.write(k)
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else:
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kbd.press(controlkey, k) # press...
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kbd.release_all() # release!
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# turn off the LED
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led.value = False
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time.sleep(0.01)
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