69 lines
1.8 KiB
Python
69 lines
1.8 KiB
Python
# SPDX-FileCopyrightText: 2021 Sandy Macdonald
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#
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# SPDX-License-Identifier: MIT
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# A simple example of how to set up a keymap and HID keyboard on Keybow 2040.
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# You'll need to connect Keybow 2040 to a computer, as you would with a regular
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# USB keyboard.
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# Drop the keybow2040.py file into your `lib` folder on your `CIRCUITPY` drive.
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# NOTE! Requires the adafruit_hid CircuitPython library also!
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import board
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from keybow2040 import Keybow2040
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import usb_hid
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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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# Set up Keybow
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i2c = board.I2C()
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keybow = Keybow2040(i2c)
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keys = keybow.keys
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# Set up the keyboard and layout
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keyboard = Keyboard(usb_hid.devices)
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layout = KeyboardLayoutUS(keyboard)
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# A map of keycodes that will be mapped sequentially to each of the keys, 0-15
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keymap = [Keycode.ZERO,
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Keycode.ONE,
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Keycode.TWO,
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Keycode.THREE,
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Keycode.FOUR,
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Keycode.FIVE,
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Keycode.SIX,
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Keycode.SEVEN,
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Keycode.EIGHT,
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Keycode.NINE,
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Keycode.A,
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Keycode.B,
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Keycode.C,
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Keycode.D,
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Keycode.E,
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Keycode.F]
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# The colour to set the keys when pressed, yellow.
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rgb = (255, 255, 0)
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# Attach handler functions to all of the keys
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for key in keys:
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# A press handler that sends the keycode and turns on the LED
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@keybow.on_press(key)
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def press_handler(key):
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keycode = keymap[key.number]
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keyboard.send(keycode)
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key.set_led(*rgb)
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# A release handler that turns off the LED
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@keybow.on_release(key)
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def release_handler(key):
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key.led_off()
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while True:
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# Always remember to call keybow.update()!
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keybow.update()
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