61 lines
No EOL
1.5 KiB
Python
Executable file
61 lines
No EOL
1.5 KiB
Python
Executable file
import board
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from digitalio import DigitalInOut, Direction, Pull
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import usb_hid
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from adafruit_hid.keyboard import Keyboard
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from adafruit_hid.keycode import Keycode
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from adafruit_hid.keyboard_layout_us import KeyboardLayoutUS
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kbd = Keyboard(usb_hid.devices)
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kbdLayout = KeyboardLayoutUS(kbd)
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state = []
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pins = {}
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buttonMap = [
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dict(row="D4", col="D0", id=1),
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dict(row="D4", col="D1", id=2),
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dict(row="D4", col="D2", id=3),
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dict(row="D3", col="D2", id=4),
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dict(row="D3", col="D0", id=5),
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dict(row="D3", col="D1", id=6)]
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# Set up row pins
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for pin in ["D4", "D3"]:
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p = DigitalInOut(getattr(board, pin))
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p.direction = Direction.OUTPUT
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pins[pin] = p
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# Set up column pins
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for pin in ["D0", "D1", "D2"]:
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p = DigitalInOut(getattr(board, pin))
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p.direction = Direction.INPUT
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p.pull = Pull.DOWN
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pins[pin] = p
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buttonIDtoKeycode = {
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1: Keycode.V,
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2: Keycode.O,
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3: Keycode.T,
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4: Keycode.E,
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5: Keycode.SPACE,
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6: Keycode.ENTER}
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while True:
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# Compare old and new state
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oldState = state
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newState = []
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newBtn = None
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for button in buttonMap:
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r = pins[button["row"]]
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r.value = True
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if pins[button["col"]].value:
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newState += [button["id"]]
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if not button["id"] in oldState:
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newBtn = button["id"]
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r.value = False
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# Press & release keys
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for oldID in oldState:
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if not oldID in newState:
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kbd.release(buttonIDtoKeycode[oldID])
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if newBtn:
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kbd.press(buttonIDtoKeycode[newBtn])
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state = newState
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