Force a kiosk into BIOS to boot from a USB drive + offer ⊞ key after boot, Adafruit Neo Trinkey, CircuitPython 8.x

boot.py

import board
import touchio
import storage
import usb_cdc
import usb_midi
import usb_hid

# Neo Trinkey
touch1 = touchio.TouchIn(board.TOUCH1)
touch2 = touchio.TouchIn(board.TOUCH2)

# If the capacitive terminals ARE NOT pinched between your fingers, set up the BIOS keyboard
# via todbot @ https://gist.github.com/todbot/707e4e3d393313cf31cdab56bf9d4255
if touch1.raw_value > 1500 or touch2.raw_value > 1500:
    pass
else:
    storage.disable_usb_drive()
    storage.remount("/", False)
    usb_cdc.disable()
    usb_midi.disable()
    usb_hid.enable((usb_hid.Device.KEYBOARD), boot_device=1)

main.py

import time
import board
import touchio
import usb_hid
import supervisor
import neopixel
import os
import microcontroller
from rainbowio import colorwheel
from adafruit_hid.keyboard import Keyboard
from adafruit_hid.keycode import Keycode
# Remember to use the MPY versions or you'll get a MemoryError
from adafruit_debouncer import Debouncer

touch1 = touchio.TouchIn(board.TOUCH1)
touch2 = touchio.TouchIn(board.TOUCH2)
pixels = neopixel.NeoPixel(board.NEOPIXEL, 4, auto_write=False)
pixels.brightness = 0.025

# Don't autoreload, since we have to hold the capacitive terminals to boot normally
supervisor.runtime.autoreload = False

def rainbow(color_index):
    for led in range(4):
        pixel_index = (led * 256 // 4) + color_index
        pixels[led] = colorwheel(pixel_index & 255)
    pixels.show()

color = 0

# If the capacitive terminals ARE NOT pinched between your fingers, set up the BIOS keyboard
# via todbot @ https://gist.github.com/todbot/707e4e3d393313cf31cdab56bf9d4255
if touch1.raw_value > 1500 or touch2.raw_value > 1500:
    pass
else:
    pixels.fill((255, 255, 0))
    pixels.show()

    # Wait for USB to come up
    while not supervisor.runtime.usb_connected:
        pass

    pixels.fill((0, 255, 0))
    pixels.show()

    kbd = Keyboard(usb_hid.devices)

    BIOSKEYB = True
    if 'boottime.txt' in os.listdir():
        if os.stat('boottime.txt')[6] < 90:
            BIOSKEYB = False

    with open('boottime.txt', 'w') as bt:
        bt.write('')
        bt.flush()

    if BIOSKEYB:
        # Mash DELETE 20 times to get into BIOS
        for a in range(20):
            kbd.send(Keycode.DELETE)
            time.sleep(0.25)

        time.sleep(5)

        # F6 is Advanced Settings
        kbd.send(Keycode.F6)

        time.sleep(1)

        # Left Arrow moves us to the exit screen
        kbd.send(Keycode.LEFT_ARROW)

        time.sleep(1)

        # End moves us to the flash drive
        kbd.send(Keycode.END)

        time.sleep(1)

        # Enter boots
        kbd.send(Keycode.ENTER)

    touch1db = Debouncer(touch1)
    touch2db = Debouncer(touch2)

    sec = 0
    tick = time.monotonic()
    TIMECHECK = True

    while True:
        touch1db.update()
        touch2db.update()

        if touch1db.fell:
            kbd.send(Keycode.WINDOWS)
        elif touch2db.fell:
            kbd.send(Keycode.WINDOWS)

        color = color + 1
        if color > 255:
            color = 0

        rainbow(color)

        if TIMECHECK:
            if sec <= 90:
                if time.monotonic() - tick >= 5.0:
                    with open('boottime.txt', 'a') as bt:
                        bt.write('     ')
                        bt.flush()
                    tick = time.monotonic()
                    sec = sec + 5
            else:
                os.remove('boottime.txt')
                TIMECHECK = False

        if not supervisor.runtime.usb_connected:
            microcontroller.reset()

        time.sleep(0.01)