# # ZX Raspberry Keyboard Scanner v5 # @mrpjevans mrpjevans.com 2019 # MIT License (https://opensource.org/licenses/MIT) see LICENSE # import time, sys, os, uinput from gpiozero import DigitalInputDevice, DigitalOutputDevice, PWMLED # KB1 (BCOM GPIO pins) dataLines = [6,24,26,12,20,21] # KB1 (BCOM GPIO pins) addressLines = [17,13,22,4,23,5] # The ZX Spectrum Keyboard Matrix (Mapped to modern keyboard) keys = [ ['SPACE', 'DOT', 'M', 'N', 'B','LEFT'], ['ENTER', 'L', 'K', 'J', 'H','UP'], ['P', 'O', 'I', 'U', 'Y','DOWN'], ['BACKSPACE', 'Z', 'X', 'C', 'V','RIGHT'], ['A', 'S', 'D', 'F', 'G','RESERVED'], ['Q', 'W', 'E', 'R', 'T','ESC'] ] # Function key mode funcKeys = [ ['LEFTCTRL', 'COMMA', 'M', 'N', 'B','LEFT'], ['ENTER', 'MINUS', 'SLASH', 'BACKSLASH', 'H','UP'], ['0', '9', '8', '7', '6','DOWN'], ['DELETE', 'Z', 'X', 'C', 'V','RIGHT'], ['CAPSLOCK', 'LEFTBRACE', 'RIGHTBRACE', 'DOLLAR', 'G','RESERVED'], ['1', '2', '3', '4', '5','TAB'] ] ShiftKeys = [ ['SPACE', 'SEMICOLON', 'DOT', 'COMMA', 'B','LEFT'], ['ENTER', 'MINUS', 'SLASH', 'BACKSLASH', 'KPPLUS','UP'], ['0', '9', '8', '7', '6','DOWN'], ['DELETE', 'Z', 'X', 'C', 'V','RIGHT'], ['CAPSLOCK', 'LEFTBRACE', 'RIGHTBRACE', 'DOLLAR', 'G','RESERVED'], ['1', '2', '3', '4', '5','TAB'] ] FnKeys = [ ['SPACE', 'SEMICOLON', 'DOT', 'COMMA', 'B','LEFT'], ['ENTER', 'MINUS', 'SLASH', 'BACKSLASH', 'KPPLUS','UP'], ['F10', 'F9', 'F8', 'F7', 'F6','DOWN'], ['DELETE', 'Z', 'X', 'C', 'V','RIGHT'], ['CAPSLOCK', 'LEFTBRACE', 'RIGHTBRACE', 'DOLLAR', 'G','RESERVED'], ['F1', 'F2', 'F3', 'F4', 'F5','TAB'] ] # Track keypresses so we can support multiple keys keyTrack = [ [False, False, False, False, False, False], [False, False, False, False, False, False], [False, False, False, False, False, False], [False, False, False, False, False, False], [False, False, False, False, False, False], [False, False, False, False, False, False] ] # Well this is annoying device = uinput.Device([ uinput.KEY_A, uinput.KEY_B, uinput.KEY_C, uinput.KEY_D, uinput.KEY_E, uinput.KEY_F, uinput.KEY_G, uinput.KEY_H, uinput.KEY_I, uinput.KEY_J, uinput.KEY_K, uinput.KEY_L, uinput.KEY_M, uinput.KEY_N, uinput.KEY_O, uinput.KEY_P, uinput.KEY_Q, uinput.KEY_R, uinput.KEY_S, uinput.KEY_T, uinput.KEY_U, uinput.KEY_V, uinput.KEY_W, uinput.KEY_X, uinput.KEY_Y, uinput.KEY_Z, uinput.KEY_0, uinput.KEY_1, uinput.KEY_2, uinput.KEY_3, uinput.KEY_4, uinput.KEY_5, uinput.KEY_6, uinput.KEY_7, uinput.KEY_8, uinput.KEY_9, uinput.KEY_TAB, uinput.KEY_MINUS, uinput.KEY_DOLLAR, uinput.KEY_LEFTSHIFT, uinput.KEY_ENTER, uinput.KEY_SPACE, uinput.KEY_LEFTCTRL, uinput.KEY_KPPLUS, uinput.KEY_DASHBOARD, uinput.KEY_QUESTION, uinput.KEY_LEFTBRACE, uinput.KEY_RIGHTBRACE, uinput.KEY_SLASH, uinput.KEY_BACKSLASH, uinput.KEY_F10, uinput.KEY_F3, uinput.KEY_F4, uinput.KEY_F5, uinput.KEY_FN, uinput.KEY_SEMICOLON, uinput.KEY_UP, uinput.KEY_DOWN, uinput.KEY_LEFT, uinput.KEY_RIGHT, uinput.KEY_RESERVED, uinput.KEY_DELETE, uinput.KEY_ESC, uinput.KEY_BACKSPACE, uinput.KEY_COMMA, uinput.KEY_DOT, uinput.KEY_CAPSLOCK, uinput.KEY_KPASTERISK ]) # KB1 (BCOM GPIO pins) dataLineIds = [6,24,26,12,20,21] dataLines = []; # KB2 (BCOM GPIO pins) addressLineIds = [17,13,22,4,23,5] addressLines = [] # Set all data lines to input for dataLineId in dataLineIds: dataLines.append(DigitalInputDevice(dataLineId, True)) # Set all address lines for output for addressLineId in addressLineIds: addressLines.append(DigitalOutputDevice(addressLineId, True, True)) # Keyboard mode and reset button mode_led = PWMLED(16) mode_handler = 0 # 0 = Spectrum, 1 = Function Keys keyboardMode = 0 # Announce print("Running") try: # Loop forever while True: # Individually set each address line low for addressLine in range(6): # Set low addressLines[addressLine].off() # Scan data lines for dataLine in range(6): # Get state and details for this button isPressed = dataLines[dataLine].value == 1 # print('isPressed ' + str(isPressed)) if(keyboardMode == 0): keyPressed = keys[addressLine][dataLine] elif(keyboardMode == 1): keyPressed = funcKeys[addressLine][dataLine] elif(keyboardMode == 2): keyPressed = ShiftKeys[addressLine][dataLine] keyCode = getattr(uinput, 'KEY_' + keyPressed) # print('keyCode ' + str(keyCode)) # If pressed for the first time if(isPressed and keyTrack[addressLine][dataLine] == False): # Press the key and make a note #print('Pressing keyPressed' + keyPressed) device.emit(keyCode, 1) keyTrack[addressLine][dataLine] = True if(keyTrack[4][5] == True and keyPressed == 'RESERVED' and keyboardMode == 0): keyboardMode = 1 mode_led.value = 1 elif(keyTrack[4][5] == True and keyPressed == 'RESERVED' and keyboardMode == 1): keyboardMode = 2 mode_led.pulse() device.emit(getattr(uinput, 'KEY_LEFTSHIFT'), 1) elif(keyTrack[4][5] == True and keyPressed == 'RESERVED' and keyboardMode == 2): keyboardMode = 0 device.emit(getattr(uinput, 'KEY_LEFTSHIFT'), 0) mode_led.value = 0 # If not pressed now but was pressed on last check elif(not isPressed and keyTrack[addressLine][dataLine] == True): # Release the key and make a note #print('Releasing ' + keyPressed) device.emit(keyCode, 0) keyTrack[addressLine][dataLine] = False # Set high addressLines[addressLine].on() # Allow the CPU to breathe time.sleep(0.01) except KeyboardInterrupt: sys.exit(0)