/* PS2Keyboard.cpp - PS2Keyboard library Copyright (c) 2007 Free Software Foundation. All right reserved. Written by Christian Weichel ** Mostly rewritten Paul Stoffregen 2010, 2011 ** Modified for use beginning with Arduino 13 by L. Abraham Smith, * ** Modified for easy interrup pin assignement on method begin(datapin,irq_pin). Cuningan ** for more information you can read the original wiki in arduino.cc at http://www.arduino.cc/playground/Main/PS2Keyboard or http://www.pjrc.com/teensy/td_libs_PS2Keyboard.html Version 2.4 (March 2013) - Support Teensy 3.0, Arduino Due, Arduino Leonardo & other boards - French keyboard layout, David Chochoi, tchoyyfr at yahoo dot fr Version 2.3 (October 2011) - Minor bugs fixed Version 2.2 (August 2011) - Support non-US keyboards - thanks to Rainer Bruch for a German keyboard :) Version 2.1 (May 2011) - timeout to recover from misaligned input - compatibility with Arduino "new-extension" branch - TODO: send function, proposed by Scott Penrose, scooterda at me dot com Version 2.0 (June 2010) - Buffering added, many scan codes can be captured without data loss if your sketch is busy doing other work - Shift keys supported, completely rewritten scan code to ascii - Slow linear search replaced with fast indexed table lookups - Support for Teensy, Arduino Mega, and Sanguino added This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include "PS2Keyboard.h" #define BUFFER_SIZE 45 static volatile uint8_t buffer[BUFFER_SIZE]; static volatile uint8_t head, tail; static uint8_t DataPin; static uint8_t CharBuffer=0; static uint8_t UTF8next=0; static const PS2Keymap_t *keymap=NULL; // The ISR for the external interrupt void ps2interrupt(void) { static uint8_t bitcount=0; static uint8_t incoming=0; static uint32_t prev_ms=0; uint32_t now_ms; uint8_t n, val; val = digitalRead(DataPin); now_ms = millis(); if (now_ms - prev_ms > 250) { bitcount = 0; incoming = 0; } prev_ms = now_ms; n = bitcount - 1; if (n <= 7) { incoming |= (val << n); } bitcount++; if (bitcount == 11) { uint8_t i = head + 1; if (i >= BUFFER_SIZE) i = 0; if (i != tail) { buffer[i] = incoming; head = i; } bitcount = 0; incoming = 0; } } static inline uint8_t get_scan_code(void) { uint8_t c, i; i = tail; if (i == head) return 0; i++; if (i >= BUFFER_SIZE) i = 0; c = buffer[i]; tail = i; return c; } // http://www.quadibloc.com/comp/scan.htm // http://www.computer-engineering.org/ps2keyboard/scancodes2.html // These arrays provide a simple key map, to turn scan codes into ISO8859 // output. If a non-US keyboard is used, these may need to be modified // for the desired output. // const PROGMEM PS2Keymap_t PS2Keymap_US = { // without shift {0, PS2_F9, 0, PS2_F5, PS2_F3, PS2_F1, PS2_F2, PS2_F12, 0, PS2_F10, PS2_F8, PS2_F6, PS2_F4, PS2_TAB, '`', 0, 0, 0 /*Lalt*/, 0 /*Lshift*/, 0, 0 /*Lctrl*/, 'q', '1', 0, 0, 0, 'z', 's', 'a', 'w', '2', 0, 0, 'c', 'x', 'd', 'e', '4', '3', 0, 0, ' ', 'v', 'f', 't', 'r', '5', 0, 0, 'n', 'b', 'h', 'g', 'y', '6', 0, 0, 0, 'm', 'j', 'u', '7', '8', 0, 0, ',', 'k', 'i', 'o', '0', '9', 0, 0, '.', '/', 'l', ';', 'p', '-', 0, 0, 0, '\'', 0, '[', '=', 0, 0, 0 /*CapsLock*/, 0 /*Rshift*/, PS2_ENTER /*Enter*/, ']', 0, '\\', 0, 0, 0, 0, 0, 0, 0, 0, PS2_BACKSPACE, 0, 0, '1', 0, '4', '7', 0, 0, 0, '0', '.', '2', '5', '6', '8', PS2_ESC, 0 /*NumLock*/, PS2_F11, '+', '3', '-', '*', '9', PS2_SCROLL, 0, 0, 0, 0, PS2_F7 }, // with shift {0, PS2_F9, 0, PS2_F5, PS2_F3, PS2_F1, PS2_F2, PS2_F12, 0, PS2_F10, PS2_F8, PS2_F6, PS2_F4, PS2_TAB, '~', 0, 0, 0 /*Lalt*/, 0 /*Lshift*/, 0, 0 /*Lctrl*/, 'Q', '!', 0, 0, 0, 'Z', 'S', 'A', 'W', '@', 0, 0, 'C', 'X', 'D', 'E', '$', '#', 0, 0, ' ', 'V', 'F', 'T', 'R', '%', 0, 0, 'N', 'B', 'H', 'G', 'Y', '^', 0, 0, 0, 'M', 'J', 'U', '&', '*', 0, 0, '<', 'K', 'I', 'O', ')', '(', 0, 0, '>', '?', 'L', ':', 'P', '_', 0, 0, 0, '"', 0, '{', '+', 0, 0, 0 /*CapsLock*/, 0 /*Rshift*/, PS2_ENTER /*Enter*/, '}', 0, '|', 0, 0, 0, 0, 0, 0, 0, 0, PS2_BACKSPACE, 0, 0, '1', 0, '4', '7', 0, 0, 0, '0', '.', '2', '5', '6', '8', PS2_ESC, 0 /*NumLock*/, PS2_F11, '+', '3', '-', '*', '9', PS2_SCROLL, 0, 0, 0, 0, PS2_F7 }, 0 }; const PROGMEM PS2Keymap_t PS2Keymap_German = { // without shift {0, PS2_F9, 0, PS2_F5, PS2_F3, PS2_F1, PS2_F2, PS2_F12, 0, PS2_F10, PS2_F8, PS2_F6, PS2_F4, PS2_TAB, '^', 0, 0, 0 /*Lalt*/, 0 /*Lshift*/, 0, 0 /*Lctrl*/, 'q', '1', 0, 0, 0, 'y', 's', 'a', 'w', '2', 0, 0, 'c', 'x', 'd', 'e', '4', '3', 0, 0, ' ', 'v', 'f', 't', 'r', '5', 0, 0, 'n', 'b', 'h', 'g', 'z', '6', 0, 0, 0, 'm', 'j', 'u', '7', '8', 0, 0, ',', 'k', 'i', 'o', '0', '9', 0, 0, '.', '-', 'l', PS2_o_DIAERESIS, 'p', PS2_SHARP_S, 0, 0, 0, PS2_a_DIAERESIS, 0, PS2_u_DIAERESIS, '\'', 0, 0, 0 /*CapsLock*/, 0 /*Rshift*/, PS2_ENTER /*Enter*/, '+', 0, '#', 0, 0, 0, '<', 0, 0, 0, 0, PS2_BACKSPACE, 0, 0, '1', 0, '4', '7', 0, 0, 0, '0', '.', '2', '5', '6', '8', PS2_ESC, 0 /*NumLock*/, PS2_F11, '+', '3', '-', '*', '9', PS2_SCROLL, 0, 0, 0, 0, PS2_F7 }, // with shift {0, PS2_F9, 0, PS2_F5, PS2_F3, PS2_F1, PS2_F2, PS2_F12, 0, PS2_F10, PS2_F8, PS2_F6, PS2_F4, PS2_TAB, PS2_DEGREE_SIGN, 0, 0, 0 /*Lalt*/, 0 /*Lshift*/, 0, 0 /*Lctrl*/, 'Q', '!', 0, 0, 0, 'Y', 'S', 'A', 'W', '"', 0, 0, 'C', 'X', 'D', 'E', '$', PS2_SECTION_SIGN, 0, 0, ' ', 'V', 'F', 'T', 'R', '%', 0, 0, 'N', 'B', 'H', 'G', 'Z', '&', 0, 0, 0, 'M', 'J', 'U', '/', '(', 0, 0, ';', 'K', 'I', 'O', '=', ')', 0, 0, ':', '_', 'L', PS2_O_DIAERESIS, 'P', '?', 0, 0, 0, PS2_A_DIAERESIS, 0, PS2_U_DIAERESIS, '`', 0, 0, 0 /*CapsLock*/, 0 /*Rshift*/, PS2_ENTER /*Enter*/, '*', 0, '\'', 0, 0, 0, '>', 0, 0, 0, 0, PS2_BACKSPACE, 0, 0, '1', 0, '4', '7', 0, 0, 0, '0', '.', '2', '5', '6', '8', PS2_ESC, 0 /*NumLock*/, PS2_F11, '+', '3', '-', '*', '9', PS2_SCROLL, 0, 0, 0, 0, PS2_F7 }, 1, // with altgr {0, PS2_F9, 0, PS2_F5, PS2_F3, PS2_F1, PS2_F2, PS2_F12, 0, PS2_F10, PS2_F8, PS2_F6, PS2_F4, PS2_TAB, 0, 0, 0, 0 /*Lalt*/, 0 /*Lshift*/, 0, 0 /*Lctrl*/, '@', 0, 0, 0, 0, 0, 0, 0, 0, PS2_SUPERSCRIPT_TWO, 0, 0, 0, 0, 0, PS2_CURRENCY_SIGN, 0, PS2_SUPERSCRIPT_THREE, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, PS2_MICRO_SIGN, 0, 0, '{', '[', 0, 0, 0, 0, 0, 0, '}', ']', 0, 0, 0, 0, 0, 0, 0, '\\', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /*CapsLock*/, 0 /*Rshift*/, PS2_ENTER /*Enter*/, '~', 0, '#', 0, 0, 0, '|', 0, 0, 0, 0, PS2_BACKSPACE, 0, 0, '1', 0, '4', '7', 0, 0, 0, '0', '.', '2', '5', '6', '8', PS2_ESC, 0 /*NumLock*/, PS2_F11, '+', '3', '-', '*', '9', PS2_SCROLL, 0, 0, 0, 0, PS2_F7 } }; const PROGMEM PS2Keymap_t PS2Keymap_French = { // without shift {0, PS2_F9, 0, PS2_F5, PS2_F3, PS2_F1, PS2_F2, PS2_F12, 0, PS2_F10, PS2_F8, PS2_F6, PS2_F4, PS2_TAB, PS2_SUPERSCRIPT_TWO, 0, 0, 0 /*Lalt*/, 0 /*Lshift*/, 0, 0 /*Lctrl*/, 'a', '&', 0, 0, 0, 'w', 's', 'q', 'z', PS2_e_ACUTE, 0, 0, 'c', 'x', 'd', 'e', '\'', '"', 0, 0, ' ', 'v', 'f', 't', 'r', '(', 0, 0, 'n', 'b', 'h', 'g', 'y', '-', 0, 0, 0, ',', 'j', 'u', PS2_e_GRAVE, '_', 0, 0, ';', 'k', 'i', 'o', PS2_a_GRAVE, PS2_c_CEDILLA, 0, 0, ':', '!', 'l', 'm', 'p', ')', 0, 0, 0, PS2_u_GRAVE, 0, '^', '=', 0, 0, 0 /*CapsLock*/, 0 /*Rshift*/, PS2_ENTER /*Enter*/, '$', 0, '*', 0, 0, 0, '<', 0, 0, 0, 0, PS2_BACKSPACE, 0, 0, '1', 0, '4', '7', 0, 0, 0, '0', '.', '2', '5', '6', '8', PS2_ESC, 0 /*NumLock*/, PS2_F11, '+', '3', '-', '*', '9', PS2_SCROLL, 0, 0, 0, 0, PS2_F7 }, // with shift {0, PS2_F9, 0, PS2_F5, PS2_F3, PS2_F1, PS2_F2, PS2_F12, 0, PS2_F10, PS2_F8, PS2_F6, PS2_F4, PS2_TAB, 0, 0, 0, 0 /*Lalt*/, 0 /*Lshift*/, 0, 0 /*Lctrl*/, 'A', '1', 0, 0, 0, 'W', 'S', 'Q', 'Z', '2', 0, 0, 'C', 'X', 'D', 'E', '4', '3', 0, 0, ' ', 'V', 'F', 'T', 'R', '5', 0, 0, 'N', 'B', 'H', 'G', 'Y', '6', 0, 0, 0, '?', 'J', 'U', '7', '8', 0, 0, '.', 'K', 'I', 'O', '0', '9', 0, 0, '/', PS2_SECTION_SIGN, 'L', 'M', 'P', PS2_DEGREE_SIGN, 0, 0, 0, '%', 0, PS2_DIAERESIS, '+', 0, 0, 0 /*CapsLock*/, 0 /*Rshift*/, PS2_ENTER /*Enter*/, PS2_POUND_SIGN, 0, PS2_MICRO_SIGN, 0, 0, 0, '>', 0, 0, 0, 0, PS2_BACKSPACE, 0, 0, '1', 0, '4', '7', 0, 0, 0, '0', '.', '2', '5', '6', '8', PS2_ESC, 0 /*NumLock*/, PS2_F11, '+', '3', '-', '*', '9', PS2_SCROLL, 0, 0, 0, 0, PS2_F7 }, 1, // with altgr {0, PS2_F9, 0, PS2_F5, PS2_F3, PS2_F1, PS2_F2, PS2_F12, 0, PS2_F10, PS2_F8, PS2_F6, PS2_F4, PS2_TAB, 0, 0, 0, 0 /*Lalt*/, 0 /*Lshift*/, 0, 0 /*Lctrl*/, '@', 0, 0, 0, 0, 0, 0, 0, 0, '~', 0, 0, 0, 0, 0, 0 /*PS2_EURO_SIGN*/, '{', '#', 0, 0, 0, 0, 0, 0, 0, '[', 0, 0, 0, 0, 0, 0, 0, '|', 0, 0, 0, 0, 0, 0, '`', '\\', 0, 0, 0, 0, 0, 0, '@', '^', 0, 0, 0, 0, 0, 0, 0, ']', 0, 0, 0, 0, 0, 0, 0, '}', 0, 0 /*CapsLock*/, 0 /*Rshift*/, PS2_ENTER /*Enter*/, PS2_CURRENCY_SIGN, 0, '#', 0, 0, 0, '|', 0, 0, 0, 0, PS2_BACKSPACE, 0, 0, '1', 0, '4', '7', 0, 0, 0, '0', '.', '2', '5', '6', '8', PS2_ESC, 0 /*NumLock*/, PS2_F11, '+', '3', '-', '*', '9', PS2_SCROLL, 0, 0, 0, 0, PS2_F7 } }; const PROGMEM PS2Keymap_t PS2Keymap_Spanish = { // without shift {0, PS2_F9, 0, PS2_F5, PS2_F3, PS2_F1, PS2_F2, PS2_F12, 0, PS2_F10, PS2_F8, PS2_F6, PS2_F4, PS2_TAB, PS2_MASCULINE_ORDINAL, 0, 0, 0 /*Lalt*/, 0 /*Lshift*/, 0, 0 /*Lctrl*/, 'q', '1', 0, 0, 0, 'z', 's', 'a', 'w', '2', 0, 0, 'c', 'x', 'd', 'e', '4', '3', 0, 0, ' ', 'v', 'f', 't', 'r', '5', 0, 0, 'n', 'b', 'h', 'g', 'y', '6', 0, 0, 0, 'm', 'j', 'u', '7', '8', 0, 0, ',', 'k', 'i', 'o', '0', '9', 0, 0, '.', '-', 'l', 'n', 'p', '\'', 0, 0, 0, PS2_ACUTE_ACCENT, 0, '`', PS2_INVERTED_EXCLAMATION, 0, 0, 0 /*CapsLock*/, 0 /*Rshift*/, PS2_ENTER /*Enter*/, '+', 0, PS2_c_CEDILLA, 0, 0, 0, '<', 0, 0, 0, 0, PS2_BACKSPACE, 0, 0, '1', 0, '4', '7', 0, 0, 0, '0', '.', '2', '5', '6', '8', PS2_ESC, 0 /*NumLock*/, PS2_F11, '+', '3', '-', '*', '9', PS2_SCROLL, 0, 0, 0, 0, PS2_F7 }, // with shift {0, PS2_F9, 0, PS2_F5, PS2_F3, PS2_F1, PS2_F2, PS2_F12, 0, PS2_F10, PS2_F8, PS2_F6, PS2_F4, PS2_TAB, PS2_FEMININE_ORDINAL, 0, 0, 0 /*Lalt*/, 0 /*Lshift*/, 0, 0 /*Lctrl*/, 'Q', '!', 0, 0, 0, 'Z', 'S', 'A', 'W', '\"', 0, 0, 'C', 'X', 'D', 'E', '$', PS2_MIDDLE_DOT, 0, 0, ' ', 'V', 'F', 'T', 'R', '%', 0, 0, 'N', 'B', 'H', 'G', 'Y', '&', 0, 0, 0, 'M', 'J', 'U', '/', '(', 0, 0, ';', 'K', 'I', 'O', '=', ')', 0, 0, ':', '_', 'L', 'N', 'P', '?', 0, 0, 0, PS2_DIAERESIS, 0, '^', PS2_INVERTED_QUESTION_MARK, 0, 0, 0 /*CapsLock*/, 0 /*Rshift*/, PS2_ENTER /*Enter*/, '*', 0, PS2_C_CEDILLA, 0, 0, 0, '>', 0, 0, 0, 0, PS2_BACKSPACE, 0, 0, '1', 0, '4', '7', 0, 0, 0, '0', '.', '2', '5', '6', '8', PS2_ESC, 0 /*NumLock*/, PS2_F11, '+', '3', '-', '*', '9', PS2_SCROLL, 0, 0, 0, 0, PS2_F7 }, 1, // with altgr {0, PS2_F9, 0, PS2_F5, PS2_F3, PS2_F1, PS2_F2, PS2_F12, 0, PS2_F10, PS2_F8, PS2_F6, PS2_F4, PS2_TAB, '\\', 0, 0, 0 /*Lalt*/, 0 /*Lshift*/, 0, 0 /*Lctrl*/, 'q', '|', 0, 0, 0, 'z', 's', 'a', 'w', '@', 0, 0, 'c', 'x', 'd', PS2_EURO_SIGN, '~', '#', 0, 0, ' ', 'v', 'f', 't', 'r', '5', 0, 0, 'n', 'b', 'h', 'g', 'y', PS2_NOT_SIGN, 0, 0, 0, 'm', 'j', 'u', '7', '8', 0, 0, ',', 'k', 'i', 'o', '0', '9', 0, 0, '.', '-', 'l', 'n', 'p', '\'', 0, 0, 0, '{', 0, '[', PS2_INVERTED_EXCLAMATION, 0, 0, 0 /*CapsLock*/, 0 /*Rshift*/, PS2_ENTER /*Enter*/, ']', 0, '}', 0, 0, 0, '|', 0, 0, 0, 0, PS2_BACKSPACE, 0, 0, '1', 0, '4', '7', 0, 0, 0, '0', '.', '2', '5', '6', '8', PS2_ESC, 0 /*NumLock*/, PS2_F11, '+', '3', '-', '*', '9', PS2_SCROLL, 0, 0, 0, 0, PS2_F7 } }; const PROGMEM PS2Keymap_t PS2Keymap_Italian = { // without shift {0, PS2_F9, 0, PS2_F5, PS2_F3, PS2_F1, PS2_F2, PS2_F12, 0, PS2_F10, PS2_F8, PS2_F6, PS2_F4, PS2_TAB, '\\', 0, 0, 0 /*Lalt*/, 0 /*Lshift*/, 0, 0 /*Lctrl*/, 'q', '1', 0, 0, 0, 'z', 's', 'a', 'w', '2', 0, 0, 'c', 'x', 'd', 'e', '4', '3', 0, 0, ' ', 'v', 'f', 't', 'r', '5', 0, 0, 'n', 'b', 'h', 'g', 'y', '6', 0, 0, 0, 'm', 'j', 'u', '7', '8', 0, 0, ',', 'k', 'i', 'o', '0', '9', 0, 0, '.', '-', 'l', PS2_o_GRAVE, 'p', '\'', 0, 0, 0, PS2_a_GRAVE, 0, PS2_e_GRAVE, PS2_i_GRAVE, 0, 0, 0 /*CapsLock*/, 0 /*Rshift*/, PS2_ENTER /*Enter*/, '+', 0, PS2_u_GRAVE, 0, 0, 0, '<', 0, 0, 0, 0, PS2_BACKSPACE, 0, 0, '1', 0, '4', '7', 0, 0, 0, '0', '.', '2', '5', '6', '8', PS2_ESC, 0 /*NumLock*/, PS2_F11, '+', '3', '-', '*', '9', PS2_SCROLL, 0, 0, 0, 0, PS2_F7 }, // with shift {0, PS2_F9, 0, PS2_F5, PS2_F3, PS2_F1, PS2_F2, PS2_F12, 0, PS2_F10, PS2_F8, PS2_F6, PS2_F4, PS2_TAB, '|', 0, 0, 0 /*Lalt*/, 0 /*Lshift*/, 0, 0 /*Lctrl*/, 'Q', '!', 0, 0, 0, 'Z', 'S', 'A', 'W', '\"', 0, 0, 'C', 'X', 'D', 'E', '$', PS2_POUND_SIGN, 0, 0, ' ', 'V', 'F', 'T', 'R', '%', 0, 0, 'N', 'B', 'H', 'G', 'Y', '&', 0, 0, 0, 'M', 'J', 'U', '/', '(', 0, 0, ';', 'K', 'I', 'O', '=', ')', 0, 0, ':', '_', 'L', PS2_c_CEDILLA, 0, '?', 0, 0, 0, PS2_DEGREE_SIGN, 0, PS2_e_ACUTE, '^', 0, 0, 0 /*CapsLock*/, 0 /*Rshift*/, PS2_ENTER /*Enter*/, '*', 0, PS2_SECTION_SIGN, 0, 0, 0, '>', 0, 0, 0, 0, PS2_BACKSPACE, 0, 0, '1', 0, '4', '7', 0, 0, 0, '0', '.', '2', '5', '6', '8', PS2_ESC, 0 /*NumLock*/, PS2_F11, '+', '3', '-', '*', '9', PS2_SCROLL, 0, 0, 0, 0, PS2_F7 }, 1, // with altgr {0, PS2_F9, 0, PS2_F5, PS2_F3, PS2_F1, PS2_F2, PS2_F12, 0, PS2_F10, PS2_F8, PS2_F6, PS2_F4, PS2_TAB, PS2_NOT_SIGN, 0, 0, 0 /*Lalt*/, 0 /*Lshift*/, 0, 0 /*Lctrl*/, 'q', PS2_SUPERSCRIPT_ONE, 0, 0, 0, 'z', 's', 'a', 'w', PS2_SUPERSCRIPT_TWO, 0, 0, 'c', 'x', 'd', PS2_EURO_SIGN, PS2_FRACTION_ONE_QUARTER, PS2_SUPERSCRIPT_THREE, 0, 0, ' ', 'v', 'f', 't', 'r', PS2_FRACTION_ONE_HALF, 0, 0, 'n', 'b', 'h', 'g', 'y', PS2_NOT_SIGN, 0, 0, 0, 'm', 'j', 'u', '{', '[', 0, 0, ',', 'k', 'i', 'o', '}', ']', 0, 0, '.', '-', 'l', '@', 'p', '\'', 0, 0, 0, '#', 0, '[', '~', 0, 0, 0 /*CapsLock*/, 0 /*Rshift*/, PS2_ENTER /*Enter*/, ']', 0, 0, 0, 0, 0, PS2_LEFT_DOUBLE_ANGLE_QUOTE, 0, 0, 0, 0, PS2_BACKSPACE, 0, 0, '1', 0, '4', '7', 0, 0, 0, '0', '.', '2', '5', '6', '8', PS2_ESC, 0 /*NumLock*/, PS2_F11, '+', '3', '-', '*', '9', PS2_SCROLL, 0, 0, 0, 0, PS2_F7 } }; const PROGMEM PS2Keymap_t PS2Keymap_UK = { // https://github.com/PaulStoffregen/PS2Keyboard/issues/15 // without shift {0, PS2_F9, 0, PS2_F5, PS2_F3, PS2_F1, PS2_F2, PS2_F12, 0, PS2_F10, PS2_F8, PS2_F6, PS2_F4, PS2_TAB, '`', 0, 0, 0 /*Lalt*/, 0 /*Lshift*/, 0, 0 /*Lctrl*/, 'q', '1', 0, 0, 0, 'z', 's', 'a', 'w', '2', 0, 0, 'c', 'x', 'd', 'e', '4', '3', 0, 0, ' ', 'v', 'f', 't', 'r', '5', 0, 0, 'n', 'b', 'h', 'g', 'y', '6', 0, 0, 0, 'm', 'j', 'u', '7', '8', 0, 0, ',', 'k', 'i', 'o', '0', '9', 0, 0, '.', '/', 'l', ';', 'p', '-', 0, 0, 0, '\'', 0, '[', '=', 0, 0, 0 /*CapsLock*/, 0 /*Rshift*/, PS2_ENTER /*Enter*/, ']', 0, '#', 0, 0, 0, '\\', 0, 0, 0, 0, PS2_BACKSPACE, 0, 0, '1', 0, '4', '7', 0, 0, 0, '0', '.', '2', '5', '6', '8', PS2_ESC, 0 /*NumLock*/, PS2_F11, '+', '3', '-', '*', '9', PS2_SCROLL, 0, 0, 0, 0, PS2_F7 }, // with shift {0, PS2_F9, 0, PS2_F5, PS2_F3, PS2_F1, PS2_F2, PS2_F12, 0, PS2_F10, PS2_F8, PS2_F6, PS2_F4, PS2_TAB, 172 /* ¬ */, 0, 0, 0 /*Lalt*/, 0 /*Lshift*/, 0, 0 /*Lctrl*/, 'Q', '!', 0, 0, 0, 'Z', 'S', 'A', 'W', '"', 0, 0, 'C', 'X', 'D', 'E', '$', 163 /* £ */, 0, 0, ' ', 'V', 'F', 'T', 'R', '%', 0, 0, 'N', 'B', 'H', 'G', 'Y', '^', 0, 0, 0, 'M', 'J', 'U', '&', '*', 0, 0, '<', 'K', 'I', 'O', ')', '(', 0, 0, '>', '?', 'L', ':', 'P', '_', 0, 0, 0, '@', 0, '{', '+', 0, 0, 0 /*CapsLock*/, 0 /*Rshift*/, PS2_ENTER /*Enter*/, '}', 0, '~', 0, 0, 0, '|', 0, 0, 0, 0, PS2_BACKSPACE, 0, 0, '1', 0, '4', '7', 0, 0, 0, '0', '.', '2', '5', '6', '8', PS2_ESC, 0 /*NumLock*/, PS2_F11, '+', '3', '-', '*', '9', PS2_SCROLL, 0, 0, 0, 0, PS2_F7 }, 0 }; #define BREAK 0x01 #define MODIFIER 0x02 #define SHIFT_L 0x04 #define SHIFT_R 0x08 #define ALTGR 0x10 static char get_iso8859_code(void) { static uint8_t state=0; uint8_t s; char c; while (1) { s = get_scan_code(); if (!s) return 0; if (s == 0xF0) { state |= BREAK; } else if (s == 0xE0) { state |= MODIFIER; } else { if (state & BREAK) { if (s == 0x12) { state &= ~SHIFT_L; } else if (s == 0x59) { state &= ~SHIFT_R; } else if (s == 0x11 && (state & MODIFIER)) { state &= ~ALTGR; } // CTRL, ALT & WIN keys could be added // but is that really worth the overhead? state &= ~(BREAK | MODIFIER); continue; } if (s == 0x12) { state |= SHIFT_L; continue; } else if (s == 0x59) { state |= SHIFT_R; continue; } else if (s == 0x11 && (state & MODIFIER)) { state |= ALTGR; } c = 0; if (state & MODIFIER) { switch (s) { case 0x70: c = PS2_INSERT; break; case 0x6C: c = PS2_HOME; break; case 0x7D: c = PS2_PAGEUP; break; case 0x71: c = PS2_DELETE; break; case 0x69: c = PS2_END; break; case 0x7A: c = PS2_PAGEDOWN; break; case 0x75: c = PS2_UPARROW; break; case 0x6B: c = PS2_LEFTARROW; break; case 0x72: c = PS2_DOWNARROW; break; case 0x74: c = PS2_RIGHTARROW; break; case 0x4A: c = '/'; break; case 0x5A: c = PS2_ENTER; break; default: break; } } else if ((state & ALTGR) && keymap->uses_altgr) { if (s < PS2_KEYMAP_SIZE) c = pgm_read_byte(keymap->altgr + s); } else if (state & (SHIFT_L | SHIFT_R)) { if (s < PS2_KEYMAP_SIZE) c = pgm_read_byte(keymap->shift + s); } else { if (s < PS2_KEYMAP_SIZE) c = pgm_read_byte(keymap->noshift + s); } state &= ~(BREAK | MODIFIER); if (c) return c; } } } bool PS2Keyboard::available() { if (CharBuffer || UTF8next) return true; CharBuffer = get_iso8859_code(); if (CharBuffer) return true; return false; } void PS2Keyboard::clear() { CharBuffer = 0; UTF8next = 0; } uint8_t PS2Keyboard::readScanCode(void) { return get_scan_code(); } int PS2Keyboard::read() { uint8_t result; result = UTF8next; if (result) { UTF8next = 0; } else { result = CharBuffer; if (result) { CharBuffer = 0; } else { result = get_iso8859_code(); } if (result >= 128) { UTF8next = (result & 0x3F) | 0x80; result = ((result >> 6) & 0x1F) | 0xC0; } } if (!result) return -1; return result; } int PS2Keyboard::readUnicode() { int result; result = CharBuffer; if (!result) result = get_iso8859_code(); if (!result) return -1; UTF8next = 0; CharBuffer = 0; return result; } PS2Keyboard::PS2Keyboard() { // nothing to do here, begin() does it all } void PS2Keyboard::begin(uint8_t data_pin, uint8_t irq_pin, const PS2Keymap_t &map) { uint8_t irq_num=255; DataPin = data_pin; keymap = ↦ // initialize the pins #ifdef INPUT_PULLUP pinMode(irq_pin, INPUT_PULLUP); pinMode(data_pin, INPUT_PULLUP); #else pinMode(irq_pin, INPUT); digitalWrite(irq_pin, HIGH); pinMode(data_pin, INPUT); digitalWrite(data_pin, HIGH); #endif #ifdef CORE_INT_EVERY_PIN irq_num = irq_pin; #else switch(irq_pin) { #ifdef CORE_INT0_PIN case CORE_INT0_PIN: irq_num = 0; break; #endif #ifdef CORE_INT1_PIN case CORE_INT1_PIN: irq_num = 1; break; #endif #ifdef CORE_INT2_PIN case CORE_INT2_PIN: irq_num = 2; break; #endif #ifdef CORE_INT3_PIN case CORE_INT3_PIN: irq_num = 3; break; #endif #ifdef CORE_INT4_PIN case CORE_INT4_PIN: irq_num = 4; break; #endif #ifdef CORE_INT5_PIN case CORE_INT5_PIN: irq_num = 5; break; #endif #ifdef CORE_INT6_PIN case CORE_INT6_PIN: irq_num = 6; break; #endif #ifdef CORE_INT7_PIN case CORE_INT7_PIN: irq_num = 7; break; #endif #ifdef CORE_INT8_PIN case CORE_INT8_PIN: irq_num = 8; break; #endif #ifdef CORE_INT9_PIN case CORE_INT9_PIN: irq_num = 9; break; #endif #ifdef CORE_INT10_PIN case CORE_INT10_PIN: irq_num = 10; break; #endif #ifdef CORE_INT11_PIN case CORE_INT11_PIN: irq_num = 11; break; #endif #ifdef CORE_INT12_PIN case CORE_INT12_PIN: irq_num = 12; break; #endif #ifdef CORE_INT13_PIN case CORE_INT13_PIN: irq_num = 13; break; #endif #ifdef CORE_INT14_PIN case CORE_INT14_PIN: irq_num = 14; break; #endif #ifdef CORE_INT15_PIN case CORE_INT15_PIN: irq_num = 15; break; #endif #ifdef CORE_INT16_PIN case CORE_INT16_PIN: irq_num = 16; break; #endif #ifdef CORE_INT17_PIN case CORE_INT17_PIN: irq_num = 17; break; #endif #ifdef CORE_INT18_PIN case CORE_INT18_PIN: irq_num = 18; break; #endif #ifdef CORE_INT19_PIN case CORE_INT19_PIN: irq_num = 19; break; #endif #ifdef CORE_INT20_PIN case CORE_INT20_PIN: irq_num = 20; break; #endif #ifdef CORE_INT21_PIN case CORE_INT21_PIN: irq_num = 21; break; #endif #ifdef CORE_INT22_PIN case CORE_INT22_PIN: irq_num = 22; break; #endif #ifdef CORE_INT23_PIN case CORE_INT23_PIN: irq_num = 23; break; #endif } #endif head = 0; tail = 0; if (irq_num < 255) { attachInterrupt(irq_num, ps2interrupt, FALLING); } }