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CircuitPython_Tandy1000Keyboard_QTPy_RP2040/code.py
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143
CircuitPython_Tandy1000Keyboard_QTPy_RP2040/code.py
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import time
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import digitalio
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import array
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import board
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import rp2pio
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import adafruit_pioasm
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from adafruit_hid.keyboard import Keyboard
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import usb_hid
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from adafruit_hid.keycode import Keycode as K
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tandy1000_keycodes = [
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None, K.ESCAPE, K.ONE, K.TWO, K.THREE, K.FOUR, K.FIVE, K.SIX, K.SEVEN, K.EIGHT, K.NINE, K.ZERO, K.MINUS, K.EQUALS, K.BACKSPACE, K.TAB, K.Q, K.W, K.E, K.R, K.T, K.Y, K.U, K.I, K.O, K.P, K.LEFT_BRACKET, K.RIGHT_BRACKET, K.ENTER, K.LEFT_CONTROL, K.A, K.S, K.D, K.F, K.G, K.H, K.J, K.K, K.L, K.SEMICOLON, K.QUOTE, K.UP_ARROW, K.LEFT_SHIFT, K.LEFT_ARROW, K.Z, K.X, K.C, K.V, K.B, K.N, K.M, K.COMMA, K.PERIOD, K.FORWARD_SLASH, K.RIGHT_SHIFT, K.PRINT_SCREEN, K.LEFT_ALT, K.SPACE, K.CAPS_LOCK, K.F1, K.F2, K.F3, K.F4, K.F5, K.F6, K.F7, K.F8, K.F9, K.F10, K.KEYPAD_NUMLOCK, K.PAUSE, K.KEYPAD_SEVEN, K.KEYPAD_EIGHT, K.KEYPAD_NINE, K.DOWN_ARROW, K.KEYPAD_FOUR, K.KEYPAD_FIVE, K.KEYPAD_SIX, K.RIGHT_ARROW, K.KEYPAD_ONE, K.KEYPAD_TWO, K.KEYPAD_THREE, K.KEYPAD_ZERO, K.KEYPAD_MINUS, (K.LEFT_CONTROL, K.PAUSE), K.KEYPAD_PLUS, K.KEYPAD_PERIOD, K.KEYPAD_ENTER, K.HOME, K.F11, K.F12
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]
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LOCK_KEYS = (K.CAPS_LOCK, K.KEYPAD_NUMLOCK)
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LOCK_STATE = {
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K.CAPS_LOCK: False,
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K.KEYPAD_NUMLOCK: False,
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}
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KEYPAD_NUMLOCK_LOOKUP = [
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{
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K.KEYPAD_PLUS: K.INSERT,
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K.KEYPAD_MINUS: K.DELETE,
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K.KEYPAD_SEVEN: K.BACKSLASH,
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K.KEYPAD_EIGHT: (K.LEFT_SHIFT, K.GRAVE_ACCENT),
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K.KEYPAD_NINE: K.PAGE_UP,
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K.KEYPAD_FOUR: (K.LEFT_SHIFT, K.BACKSLASH),
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#K.KEYPAD_FIVE:
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#K.KEYPAD_SIX:
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K.KEYPAD_ONE: K.END,
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K.KEYPAD_TWO: K.GRAVE_ACCENT,
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K.KEYPAD_THREE: K.PAGE_DOWN,
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K.KEYPAD_ZERO: K.ZERO,
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K.KEYPAD_PERIOD: K.PERIOD,
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},
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{
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K.KEYPAD_PLUS: (K.LEFT_SHIFT, K.EQUALS),
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K.KEYPAD_MINUS: K.MINUS,
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K.KEYPAD_SEVEN: K.SEVEN,
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K.KEYPAD_EIGHT: K.EIGHT,
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K.KEYPAD_NINE: K.NINE,
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K.KEYPAD_FOUR: K.FOUR,
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K.KEYPAD_FIVE: K.FIVE,
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K.KEYPAD_SIX: K.SIX,
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K.KEYPAD_ONE: K.ONE,
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K.KEYPAD_TWO: K.TWO,
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K.KEYPAD_THREE: K.THREE,
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K.KEYPAD_ZERO: K.ZERO,
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K.KEYPAD_PERIOD: K.PERIOD,
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}
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]
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# D10 = blue = CN2 = RESET
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# D11 = white = CN1 = DATA
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# D12 = green = CN3 = CLOCK
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# D13 = yellow = CN4 = /BUSY
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KBD_NRESET = board.D10
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KBD_DATA = board.D11
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KBD_CLOCK = board.D12
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KBD_NBUSY = board.D13
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# Assert busy
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busy_out = digitalio.DigitalInOut(KBD_NBUSY)
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busy_out.switch_to_output(False, digitalio.DriveMode.OPEN_DRAIN)
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# Reset the keyboard
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reset_out = digitalio.DigitalInOut(KBD_NRESET)
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reset_out.switch_to_output(False, digitalio.DriveMode.OPEN_DRAIN)
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time.sleep(.1)
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reset_out.value = True
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program = adafruit_pioasm.Program("""
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wait 1 pin 1
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in pins, 1
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wait 0 pin 1
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""")
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sm = rp2pio.StateMachine(program.assembled,
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first_in_pin = KBD_DATA,
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in_pin_count = 2,
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pull_in_pin_up = 0b11,
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auto_push=True,
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push_threshold=8,
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in_shift_right=True,
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frequency=8_000_000,
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**program.pio_kwargs)
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buf = array.array('B', [0])
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MASK_LEFT_SHIFT = K.modifier_bit(K.LEFT_SHIFT)
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MASK_RIGHT_SHIFT = K.modifier_bit(K.RIGHT_SHIFT)
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MASK_ANY_SHIFT = (MASK_LEFT_SHIFT | MASK_RIGHT_SHIFT)
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# Now ready to get keystrokes
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kbd = Keyboard(usb_hid.devices)
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busy_out.value = True
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while True:
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sm.readinto(buf, swap=False)
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val = buf[0]
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pressed = not (val & 0x80)
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key_number = val & 0x7f
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keycode = tandy1000_keycodes[key_number]
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if keycode is None:
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continue
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keycode = KEYPAD_NUMLOCK_LOOKUP[LOCK_STATE[K.KEYPAD_NUMLOCK]].get(keycode, keycode)
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if pressed:
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if keycode in LOCK_KEYS:
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LOCK_STATE[keycode] = True
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elif LOCK_STATE[K.CAPS_LOCK] and K.A <= keycode <= K.Z:
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old_report_modifier = kbd.report_modifier[0]
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kbd.report_modifier[0] = (old_report_modifier & ~MASK_RIGHT_SHIFT) ^ MASK_LEFT_SHIFT
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kbd.press(keycode)
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kbd.release_all()
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kbd.report_modifier[0] = old_report_modifier
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continue
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elif isinstance(keycode, tuple):
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old_report_modifier = kbd.report_modifier[0]
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kbd.report_modifier[0] = 0
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kbd.press(*keycode)
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kbd.release_all()
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kbd.report_modifier[0] = old_report_modifier
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else:
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kbd.press(keycode)
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else:
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if keycode in LOCK_KEYS:
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LOCK_STATE[keycode] = False
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elif isinstance(keycode, tuple):
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pass
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else:
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kbd.release(keycode)
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print(kbd.report)
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