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Added Lenovo G550 laptop keyboard code for Teensy 4.0
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Example_Keyboards/Lenovo_G550/IMG_20220803_155037375_2.jpg
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Example_Keyboards/Lenovo_G550/IMG_20220803_155138292_2.jpg
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/* Copyright 2022 José María Ferri
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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// This software implements a Lenovo G550 Laptop Keyboard Controller using a Teensy 4.0 on
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// a daughterboard with a 24 pin FPC connector. The keyboard part number is V-105120AK1-XX (where XX is language code, ie. US, SP, FR...).
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// This routine uses the Teensyduino "Micro-Manager Method" to send Normal and Modifier
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// keys over USB. Multi-media keys are sent with keyboard press and release functions.
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// Description of Teensyduino keyboard functions is at www.pjrc.com/teensy/td_keyboard.html
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//
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// Revision History
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// Initial Release Aug 2, 2022
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//
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#define MODIFIERKEY_FN 0x8f // give Fn key a HID code
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#define CAPS_LED 13 // Teensy LED shows Caps-Lock
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//
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const byte rows_max = 16; // sets the number of rows in the matrix
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const byte cols_max = 8; // sets the number of columns in the matrix
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//
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// Load the normal key matrix with the Teensyduino key names described at www.pjrc.com/teensy/td_keyboard.html
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// A zero indicates no normal key at that location.
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//
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int normal[rows_max][cols_max] = {
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{0,0,0,KEY_NUM_LOCK,0,0,0,0},
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{KEY_TAB,0,KEY_Z,KEY_A,KEY_1,KEY_Q,KEY_TILDE,KEY_ESC},
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{KEY_Y,KEY_N,KEY_M,KEY_J,KEY_7,KEY_U,KEY_6,KEY_H},
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{KEY_F3,KEYPAD_PERIOD,KEY_C,KEY_D,KEY_3,KEY_E,KEY_F2,KEY_F4},
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{KEY_CAPS_LOCK,KEYPAD_MINUS,KEY_X,KEY_S,KEY_2,KEY_W,KEY_F1,KEY_BACKSLASH},
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{KEY_T,KEY_B,KEY_V,KEY_F,KEY_4,KEY_R,KEY_5,KEY_G},
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{KEY_LEFT_BRACE,KEY_SLASH,0,KEY_SEMICOLON,KEY_0,KEY_P,KEY_MINUS,KEY_QUOTE},
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{0,0,0,0,0,0,0,0},
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{KEYPAD_5,0,KEYPAD_9,KEYPAD_7,0,0,KEYPAD_4,0},
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{KEYPAD_2,KEY_RIGHT,KEYPAD_6,KEYPAD_1,KEY_F12,KEYPAD_3,KEY_INSERT,KEYPAD_PLUS},
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{0,KEY_DOWN,KEYPAD_ASTERIX,0,KEY_F11,0,KEY_DELETE,0},
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{KEYPAD_8,0,0,KEY_MENU,KEY_PAGE_DOWN,0,KEY_PAGE_UP,KEYPAD_SLASH},
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{KEY_BACKSPACE,KEY_SPACE,KEY_ENTER,0,KEY_F10,0,KEY_F9,KEY_F5},
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{KEYPAD_0,KEY_LEFT,0,0,0,KEYPAD_ENTER,0,KEY_UP},
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{KEY_RIGHT_BRACE,0,KEY_COMMA,KEY_K,KEY_8,KEY_I,KEY_EQUAL,KEY_F6},
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{KEY_F7,0,KEY_PERIOD,KEY_L,KEY_9,KEY_O,KEY_F8,0}
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};
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// Load the modifier key matrix with key names at the correct row-column location.
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// A zero indicates no modifier key at that location.
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int modifier[rows_max][cols_max] = {
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{MODIFIERKEY_LEFT_SHIFT,0,MODIFIERKEY_RIGHT_SHIFT,0,0,0,0,0},
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{0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0},
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{0,0,MODIFIERKEY_RIGHT_CTRL,0,0,0,MODIFIERKEY_LEFT_CTRL,0},
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{0,MODIFIERKEY_RIGHT_ALT,0,0,0,0,0,MODIFIERKEY_LEFT_ALT},
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{0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0},
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{0,0,0,0,0,MODIFIERKEY_GUI,0,0},
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{0,0,0,0,0,0,0,0},
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{0,0,0,MODIFIERKEY_FN,0,0,0,0},
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{0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0}
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};
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// Load the media key matrix with Fn key names at the correct row-column location.
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// A zero indicates no media key at that location.
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int media[rows_max][cols_max] = {
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{0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0},
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{0,KEY_MEDIA_VOLUME_INC,0,0,KEY_MEDIA_FAST_FORWARD,0,0,0},
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{0,0,0,0,KEY_MEDIA_REWIND,0,0,0},
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{0,0,0,0,KEY_END,0,KEY_HOME,0},
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{0,0,0,0,KEY_MEDIA_STOP,0,KEY_MEDIA_PLAY_PAUSE,0},
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{0,KEY_MEDIA_VOLUME_DEC,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0}
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};
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// Initialize the old_key matrix with one's.
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// 1 = key not pressed, 0 = key is pressed
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boolean old_key[rows_max][cols_max] = {
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{1,1,1,1,1,1,1,1},
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{1,1,1,1,1,1,1,1},
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{1,1,1,1,1,1,1,1},
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{1,1,1,1,1,1,1,1},
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{1,1,1,1,1,1,1,1},
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{1,1,1,1,1,1,1,1},
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{1,1,1,1,1,1,1,1},
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{1,1,1,1,1,1,1,1},
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{1,1,1,1,1,1,1,1},
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{1,1,1,1,1,1,1,1},
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{1,1,1,1,1,1,1,1},
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{1,1,1,1,1,1,1,1},
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{1,1,1,1,1,1,1,1},
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{1,1,1,1,1,1,1,1},
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{1,1,1,1,1,1,1,1},
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{1,1,1,1,1,1,1,1}
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};
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//
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// Define the Teensy 4.0 I/O numbers (translated from the FPC pin #)
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// Row FPC pin # 02,03,04,05,06,07,08,09,10,11,12,13,14,15,16,17,18
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// Teensy I/O # 00,22,01,21,02,20,03,19,04,18,05,17,06,29,07,31,08
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int Row_IO[rows_max] = {1, 20, 4, 18, 17, 6, 7, 8, 33, 9, 10, 11, 27, 26, 25, 24}; // Teensy 4.0 I/O numbers for rows
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//
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// Column FPC pin # 19,20,21,22,23,24,25,26
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// Teensy I/O # 33,09,32,10,30,11,28,12
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int Col_IO[cols_max] = {23, 0, 22, 21, 2, 3, 19, 5}; // Teensy 4.0 I/O numbers for columns
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// Declare variables that will be used by functions
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boolean slots_full = LOW; // Goes high when slots 1 thru 6 contain normal keys
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// slot 1 thru slot 6 hold the normal key values to be sent over USB.
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int slot1 = 0; //value of 0 means the slot is empty and can be used.
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int slot2 = 0;
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int slot3 = 0;
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int slot4 = 0;
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int slot5 = 0;
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int slot6 = 0;
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//
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int mod_shift_l = 0; // These variables are sent over USB as modifier keys.
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int mod_shift_r = 0; // Each is either set to 0 or MODIFIER_ ...
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int mod_ctrl_l = 0;
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int mod_ctrl_r = 0;
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int mod_alt_l = 0;
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int mod_alt_r = 0;
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int mod_gui = 0;
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//
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// Function to load the key name into the first available slot
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void load_slot(int key) {
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if (!slot1) {
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slot1 = key;
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}
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else if (!slot2) {
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slot2 = key;
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}
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else if (!slot3) {
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slot3 = key;
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}
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else if (!slot4) {
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slot4 = key;
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}
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else if (!slot5) {
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slot5 = key;
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}
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else if (!slot6) {
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slot6 = key;
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}
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if (!slot1 || !slot2 || !slot3 || !slot4 || !slot5 || !slot6) {
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slots_full = LOW; // slots are not full
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}
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else {
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slots_full = HIGH; // slots are full
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}
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}
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//
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// Function to clear the slot that contains the key name
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void clear_slot(int key) {
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if (slot1 == key) {
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slot1 = 0;
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}
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else if (slot2 == key) {
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slot2 = 0;
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}
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else if (slot3 == key) {
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slot3 = 0;
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}
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else if (slot4 == key) {
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slot4 = 0;
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}
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else if (slot5 == key) {
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slot5 = 0;
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}
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else if (slot6 == key) {
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slot6 = 0;
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}
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if (!slot1 || !slot2 || !slot3 || !slot4 || !slot5 || !slot6) {
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slots_full = LOW; // slots are not full
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}
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else {
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slots_full = HIGH; // slots are full
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}
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}
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//
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// Function to load the modifier key name into the appropriate mod variable
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void load_mod(int m_key) {
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if (m_key == MODIFIERKEY_LEFT_SHIFT) {
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mod_shift_l = m_key;
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}
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else if (m_key == MODIFIERKEY_RIGHT_SHIFT) {
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mod_shift_r = m_key;
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}
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else if (m_key == MODIFIERKEY_LEFT_CTRL) {
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mod_ctrl_l = m_key;
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}
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else if (m_key == MODIFIERKEY_RIGHT_CTRL) {
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mod_ctrl_r = m_key;
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}
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else if (m_key == MODIFIERKEY_LEFT_ALT) {
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mod_alt_l = m_key;
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}
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else if (m_key == MODIFIERKEY_RIGHT_ALT) {
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mod_alt_r = m_key;
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}
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else if (m_key == MODIFIERKEY_GUI) {
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mod_gui = m_key;
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}
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}
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//
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// Function to load 0 into the appropriate mod variable
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void clear_mod(int m_key) {
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if (m_key == MODIFIERKEY_LEFT_SHIFT) {
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mod_shift_l = 0;
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}
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else if (m_key == MODIFIERKEY_RIGHT_SHIFT) {
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mod_shift_r = 0;
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}
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else if (m_key == MODIFIERKEY_LEFT_CTRL) {
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mod_ctrl_l = 0;
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}
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else if (m_key == MODIFIERKEY_RIGHT_CTRL) {
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mod_ctrl_r = 0;
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}
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else if (m_key == MODIFIERKEY_LEFT_ALT) {
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mod_alt_l = 0;
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}
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else if (m_key == MODIFIERKEY_RIGHT_ALT) {
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mod_alt_r = 0;
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}
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else if (m_key == MODIFIERKEY_GUI) {
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mod_gui = 0;
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}
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}
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//
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// Function to send the modifier keys over usb
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void send_mod() {
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Keyboard.set_modifier(mod_shift_l | mod_shift_r | mod_ctrl_l | mod_ctrl_r | mod_alt_l | mod_alt_r | mod_gui);
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Keyboard.send_now();
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}
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//
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// Function to send the normal keys in the 6 slots over usb
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void send_normals() {
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Keyboard.set_key1(slot1);
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Keyboard.set_key2(slot2);
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Keyboard.set_key3(slot3);
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Keyboard.set_key4(slot4);
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Keyboard.set_key5(slot5);
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Keyboard.set_key6(slot6);
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Keyboard.send_now();
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}
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//
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// Function to set a pin to high impedance (acts like open drain output)
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void go_z(int pin)
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{
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pinMode(pin, INPUT);
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digitalWrite(pin, HIGH);
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}
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//
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// Function to set a pin as an input with a pullup
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void go_pu(int pin)
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{
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pinMode(pin, INPUT_PULLUP);
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digitalWrite(pin, HIGH);
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}
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//
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// Function to send a pin to a logic low
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void go_0(int pin)
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{
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pinMode(pin, OUTPUT);
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digitalWrite(pin, LOW);
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}
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//
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// Function to send a pin to a logic high
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void go_1(int pin)
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{
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pinMode(pin, OUTPUT);
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digitalWrite(pin, HIGH);
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}
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//
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//----------------------------------Setup-------------------------------------------
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void setup() {
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for (int a = 0; a < cols_max; a++) { // loop thru all column pins
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go_pu(Col_IO[a]); // set each column pin as an input with a pullup
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}
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//
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for (int b = 0; b < rows_max; b++) { // loop thru all row pins
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go_z(Row_IO[b]); // set each row pin as a floating output
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}
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}
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//
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boolean Fn_pressed = HIGH; // Initialize Fn key to HIGH = "not pressed"
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extern volatile uint8_t keyboard_leds; // 8 bits sent from Host to Teensy that give keyboard LED status. Caps lock is bit D1.
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//
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//---------------------------------Main Loop---------------------------------------------
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//
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void loop() {
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// Scan keyboard matrix with an outer loop that drives each row low and an inner loop that reads every column (with pull ups).
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// The routine looks at each key's present state (by reading the column input pin) and also the previous state from the last scan
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// that was 30msec ago. The status of a key that was just pressed or just released is sent over USB and the state is saved in the old_key matrix.
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// The keyboard keys will read as logic low if they are pressed (negative logic).
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// The old_key matrix also uses negative logic (low=pressed).
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//
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for (int x = 0; x < rows_max; x++) { // loop thru the rows
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go_0(Row_IO[x]); // Activate Row (send it low)
|
||||||
|
delayMicroseconds(10); // give the row time to go low and settle out
|
||||||
|
for (int y = 0; y < cols_max; y++) { // loop thru the columns
|
||||||
|
// **********Modifier keys including the Fn special case
|
||||||
|
if (modifier[x][y] != 0) { // check if modifier key exists at this location in the array (a non-zero value)
|
||||||
|
if (!digitalRead(Col_IO[y]) && (old_key[x][y])) { // Read column to see if key is low (pressed) and was previously not pressed
|
||||||
|
if (modifier[x][y] != MODIFIERKEY_FN) { // Exclude Fn modifier key
|
||||||
|
load_mod(modifier[x][y]); // function reads which modifier key is pressed and loads it into the appropriate mod_... variable
|
||||||
|
send_mod(); // function sends the state of all modifier keys over usb including the one that just got pressed
|
||||||
|
old_key[x][y] = LOW; // Save state of key as "pressed"
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
Fn_pressed = LOW; // Fn status variable is active low
|
||||||
|
old_key[x][y] = LOW; // old_key state is "pressed" (active low)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else if (digitalRead(Col_IO[y]) && (!old_key[x][y])) { //check if key is not pressed and was previously pressed
|
||||||
|
if (modifier[x][y] != MODIFIERKEY_FN) { // Exclude Fn modifier key
|
||||||
|
clear_mod(modifier[x][y]); // function reads which modifier key was released and loads 0 into the appropriate mod_... variable
|
||||||
|
send_mod(); // function sends all mod's over usb including the one that just released
|
||||||
|
old_key[x][y] = HIGH; // Save state of key as "not pressed"
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
Fn_pressed = HIGH; // Fn is no longer active
|
||||||
|
old_key[x][y] = HIGH; // old_key state is "not pressed"
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
// ***********end of modifier section
|
||||||
|
//
|
||||||
|
// ***********Normal keys and media keys in this section
|
||||||
|
else if ((normal[x][y] != 0) || (media[x][y] != 0)) { // check if normal or media key exists at this location in the array
|
||||||
|
if (!digitalRead(Col_IO[y]) && (old_key[x][y]) && (!slots_full)) { // check if key is pressed and was not previously pressed and slots not full
|
||||||
|
old_key[x][y] = LOW; // Save state of key as "pressed"
|
||||||
|
if (Fn_pressed) { // Fn_pressed is active low so it is not pressed and normal key needs to be sent
|
||||||
|
load_slot(normal[x][y]); //update first available slot with normal key name
|
||||||
|
send_normals(); // send all slots over USB including the key that just got pressed
|
||||||
|
}
|
||||||
|
else if (media[x][y] != 0) { // Fn is pressed so send media if a key exists in the matrix
|
||||||
|
Keyboard.press(media[x][y]); // media key is sent using keyboard press function per PJRC
|
||||||
|
delay(5); // delay 5 milliseconds before releasing to make sure it gets sent over USB
|
||||||
|
Keyboard.release(media[x][y]); // send media key release
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else if (digitalRead(Col_IO[y]) && (!old_key[x][y])) { //check if key is not pressed, but was previously pressed
|
||||||
|
old_key[x][y] = HIGH; // Save state of key as "not pressed"
|
||||||
|
if (Fn_pressed) { // Fn is not pressed
|
||||||
|
clear_slot(normal[x][y]); //clear the slot that contains the normal key name
|
||||||
|
send_normals(); // send all slots over USB including the key that was just released
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
// **************end of normal and media key section
|
||||||
|
//
|
||||||
|
}
|
||||||
|
go_z(Row_IO[x]); // De-activate Row (send it to hi-z)
|
||||||
|
}
|
||||||
|
//
|
||||||
|
// **********keyboard scan complete
|
||||||
|
//
|
||||||
|
// Turn on the LED on the Teensy for Caps Lock based on bit 1 in the keyboard_leds variable controlled by the USB host computer
|
||||||
|
//
|
||||||
|
if (keyboard_leds & 1<<1) { // mask off all bits but D1 and test if set
|
||||||
|
go_1(CAPS_LED); // turn on the LED
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
go_0(CAPS_LED); // turn off the LED
|
||||||
|
}
|
||||||
|
//
|
||||||
|
delay(25); // The overall keyboard scanning rate is about 30ms
|
||||||
|
}
|
8
Example_Keyboards/Lenovo_G550/README.md
Normal file
8
Example_Keyboards/Lenovo_G550/README.md
Normal file
|
@ -0,0 +1,8 @@
|
||||||
|
The driver works perfect for this keyboard but I have a problem.
|
||||||
|
The problem is when using non english keyboard layout.
|
||||||
|
Whe I use **Marcel's Python matrix generator program** I must press keys as I were using english layout keyboard (mine is spanish layout) and then in Windows, selecting my language layout (spanish) everything is ok (locale symbols shows ok, i.e. 'ñ', '¿', '¡') but:
|
||||||
|
Spanish keyboard layout (phisical layout) is different from EN layout (there is a key between left shift key and 'Z' key, but there is only two keys between 'P' key and 'Enter' key.
|
||||||
|
This has some negative consequences:
|
||||||
|
- The most right key between 'L' key and 'Enter' key, marked in my keyboard whith symbos 'ç', 'Ç' and '}' doesn't work, when pressed, nothing happens.
|
||||||
|
- The key between left shift and 'Z' key is marked with '<' and '>' symbols but when pressed, it shows symbos for key described above, the key that doesn't work.
|
||||||
|
- '<' and '>' symbols can't be entered with any key (only using ALT+60 and ALT+62, of course)
|
Loading…
Reference in a new issue