FootSwitch.py for Raspberry Pi Pico with CircuitPython

FootSwitch.py

# FootSwitch.py for RaspBerry Pi Pico with CircuitPython
# Copyright 2024 (c) Koichi OKADA. All right reserved.
# This script is distributed under the MIT license.

import usb_hid
from adafruit_hid.keyboard import Keyboard
from adafruit_hid.keycode import Keycode
import time
import board
import digitalio

KeyMap = [
    Keycode.LEFT_CONTROL,
    Keycode.LEFT_SHIFT,
    Keycode.SPACE,
    Keycode.B,
    Keycode.E,
    Keycode.F,
    Keycode.G,
    Keycode.ONE,
    Keycode.TWO,
    Keycode.THREE,
    Keycode.FOUR,
    Keycode.FIVE,
]
KeyStat = [False] * len(KeyMap)

IO = [
    board.GP0,
    board.GP1,
    board.GP2,
    board.GP3,
    board.GP4,
    board.GP5,
    board.GP6,
    board.GP7,
    board.GP8,
    board.GP9,
    board.GP10,
    board.GP11,
    board.GP12,
    board.GP13,
    board.GP14,
    board.GP15,
    board.GP16,
    board.GP17,
    board.GP18,
    board.GP19,
    board.GP20,
    board.GP21,
    board.GP22,
    board.GP23,
    board.GP24,
    board.GP25,
    board.GP26,
    board.GP27,
    board.GP28,
]

gp = [None] * len(KeyMap)

kbd = Keyboard(usb_hid.devices)

for i in range(len(KeyMap)):
    gp[i] = digitalio.DigitalInOut(IO[i])
    gp[i].switch_to_input(pull=digitalio.Pull.UP)

led = digitalio.DigitalInOut(board.LED)
led.direction = digitalio.Direction.OUTPUT

while True:
    for i, io in enumerate(gp):
        if not io.value:
            if not KeyStat[i]:
                kbd.press(KeyMap[i])
                KeyStat[i] = not KeyStat[i]
        else:
            if KeyStat[i]:
                kbd.release(KeyMap[i])
                KeyStat[i] = not KeyStat[i]
    led.value = not led.value
    time.sleep(0.001)