mirror of https://github.com/smartykit/apple1.git
546 lines
15 KiB
C++
546 lines
15 KiB
C++
/*
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PS2Keyboard.cpp - PS2Keyboard library
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Copyright (c) 2007 Free Software Foundation. All right reserved.
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Written by Christian Weichel <info@32leaves.net>
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** Mostly rewritten Paul Stoffregen <paul@pjrc.com> 2010, 2011
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** Modified for use beginning with Arduino 13 by L. Abraham Smith, <n3bah@microcompdesign.com> *
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** Modified for easy interrup pin assignement on method begin(datapin,irq_pin). Cuningan <cuninganreset@gmail.com> **
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for more information you can read the original wiki in arduino.cc
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at http://www.arduino.cc/playground/Main/PS2Keyboard
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or http://www.pjrc.com/teensy/td_libs_PS2Keyboard.html
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Version 2.4 (March 2013)
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- Support Teensy 3.0, Arduino Due, Arduino Leonardo & other boards
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- French keyboard layout, David Chochoi, tchoyyfr at yahoo dot fr
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Version 2.3 (October 2011)
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- Minor bugs fixed
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Version 2.2 (August 2011)
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- Support non-US keyboards - thanks to Rainer Bruch for a German keyboard :)
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Version 2.1 (May 2011)
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- timeout to recover from misaligned input
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- compatibility with Arduino "new-extension" branch
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- TODO: send function, proposed by Scott Penrose, scooterda at me dot com
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Version 2.0 (June 2010)
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- Buffering added, many scan codes can be captured without data loss
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if your sketch is busy doing other work
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- Shift keys supported, completely rewritten scan code to ascii
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- Slow linear search replaced with fast indexed table lookups
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- Support for Teensy, Arduino Mega, and Sanguino added
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "PS2Keyboard.h"
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#define BUFFER_SIZE 45
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static volatile uint8_t buffer[BUFFER_SIZE];
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static volatile uint8_t head, tail;
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static uint8_t DataPin;
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static uint8_t CharBuffer=0;
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static uint8_t UTF8next=0;
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static const PS2Keymap_t *keymap=NULL;
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// The ISR for the external interrupt
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void ps2interrupt(void)
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{
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static uint8_t bitcount=0;
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static uint8_t incoming=0;
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static uint32_t prev_ms=0;
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uint32_t now_ms;
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uint8_t n, val;
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val = digitalRead(DataPin);
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now_ms = millis();
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if (now_ms - prev_ms > 250) {
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bitcount = 0;
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incoming = 0;
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}
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prev_ms = now_ms;
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n = bitcount - 1;
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if (n <= 7) {
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incoming |= (val << n);
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}
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bitcount++;
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if (bitcount == 11) {
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uint8_t i = head + 1;
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if (i >= BUFFER_SIZE) i = 0;
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if (i != tail) {
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buffer[i] = incoming;
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head = i;
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}
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bitcount = 0;
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incoming = 0;
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}
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}
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static inline uint8_t get_scan_code(void)
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{
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uint8_t c, i;
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i = tail;
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if (i == head) return 0;
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i++;
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if (i >= BUFFER_SIZE) i = 0;
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c = buffer[i];
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tail = i;
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return c;
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}
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// http://www.quadibloc.com/comp/scan.htm
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// http://www.computer-engineering.org/ps2keyboard/scancodes2.html
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// These arrays provide a simple key map, to turn scan codes into ISO8859
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// output. If a non-US keyboard is used, these may need to be modified
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// for the desired output.
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//
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const PROGMEM PS2Keymap_t PS2Keymap_US = {
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// without shift
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{0, PS2_F9, 0, PS2_F5, PS2_F3, PS2_F1, PS2_F2, PS2_F12,
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0, PS2_F10, PS2_F8, PS2_F6, PS2_F4, PS2_TAB, '`', 0,
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0, 0 /*Lalt*/, 0 /*Lshift*/, 0, 0 /*Lctrl*/, 'q', '1', 0,
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0, 0, 'z', 's', 'a', 'w', '2', 0,
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0, 'c', 'x', 'd', 'e', '4', '3', 0,
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0, ' ', 'v', 'f', 't', 'r', '5', 0,
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0, 'n', 'b', 'h', 'g', 'y', '6', 0,
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0, 0, 'm', 'j', 'u', '7', '8', 0,
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0, ',', 'k', 'i', 'o', '0', '9', 0,
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0, '.', '/', 'l', ';', 'p', '-', 0,
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0, 0, '\'', 0, '[', '=', 0, 0,
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0 /*CapsLock*/, 0 /*Rshift*/, PS2_ENTER /*Enter*/, ']', 0, '\\', 0, 0,
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0, 0, 0, 0, 0, 0, PS2_BACKSPACE, 0,
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0, '1', 0, '4', '7', 0, 0, 0,
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'0', '.', '2', '5', '6', '8', PS2_ESC, 0 /*NumLock*/,
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PS2_F11, '+', '3', '-', '*', '9', PS2_SCROLL, 0,
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0, 0, 0, PS2_F7 },
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// with shift
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{0, PS2_F9, 0, PS2_F5, PS2_F3, PS2_F1, PS2_F2, PS2_F12,
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0, PS2_F10, PS2_F8, PS2_F6, PS2_F4, PS2_TAB, '~', 0,
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0, 0 /*Lalt*/, 0 /*Lshift*/, 0, 0 /*Lctrl*/, 'Q', '!', 0,
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0, 0, 'Z', 'S', 'A', 'W', '@', 0,
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0, 'C', 'X', 'D', 'E', '$', '#', 0,
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0, ' ', 'V', 'F', 'T', 'R', '%', 0,
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0, 'N', 'B', 'H', 'G', 'Y', '^', 0,
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0, 0, 'M', 'J', 'U', '&', '*', 0,
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0, '<', 'K', 'I', 'O', ')', '(', 0,
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0, '>', '?', 'L', ':', 'P', '_', 0,
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0, 0, '"', 0, '{', '+', 0, 0,
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0 /*CapsLock*/, 0 /*Rshift*/, PS2_ENTER /*Enter*/, '}', 0, '|', 0, 0,
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0, 0, 0, 0, 0, 0, PS2_BACKSPACE, 0,
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0, '1', 0, '4', '7', 0, 0, 0,
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'0', '.', '2', '5', '6', '8', PS2_ESC, 0 /*NumLock*/,
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PS2_F11, '+', '3', '-', '*', '9', PS2_SCROLL, 0,
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0, 0, 0, PS2_F7 },
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0
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};
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const PROGMEM PS2Keymap_t PS2Keymap_German = {
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// without shift
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{0, PS2_F9, 0, PS2_F5, PS2_F3, PS2_F1, PS2_F2, PS2_F12,
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0, PS2_F10, PS2_F8, PS2_F6, PS2_F4, PS2_TAB, '^', 0,
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0, 0 /*Lalt*/, 0 /*Lshift*/, 0, 0 /*Lctrl*/, 'q', '1', 0,
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0, 0, 'y', 's', 'a', 'w', '2', 0,
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0, 'c', 'x', 'd', 'e', '4', '3', 0,
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0, ' ', 'v', 'f', 't', 'r', '5', 0,
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0, 'n', 'b', 'h', 'g', 'z', '6', 0,
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0, 0, 'm', 'j', 'u', '7', '8', 0,
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0, ',', 'k', 'i', 'o', '0', '9', 0,
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0, '.', '-', 'l', PS2_o_DIAERESIS, 'p', PS2_SHARP_S, 0,
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0, 0, PS2_a_DIAERESIS, 0, PS2_u_DIAERESIS, '\'', 0, 0,
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0 /*CapsLock*/, 0 /*Rshift*/, PS2_ENTER /*Enter*/, '+', 0, '#', 0, 0,
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0, '<', 0, 0, 0, 0, PS2_BACKSPACE, 0,
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0, '1', 0, '4', '7', 0, 0, 0,
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'0', '.', '2', '5', '6', '8', PS2_ESC, 0 /*NumLock*/,
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PS2_F11, '+', '3', '-', '*', '9', PS2_SCROLL, 0,
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0, 0, 0, PS2_F7 },
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// with shift
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{0, PS2_F9, 0, PS2_F5, PS2_F3, PS2_F1, PS2_F2, PS2_F12,
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0, PS2_F10, PS2_F8, PS2_F6, PS2_F4, PS2_TAB, PS2_DEGREE_SIGN, 0,
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0, 0 /*Lalt*/, 0 /*Lshift*/, 0, 0 /*Lctrl*/, 'Q', '!', 0,
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0, 0, 'Y', 'S', 'A', 'W', '"', 0,
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0, 'C', 'X', 'D', 'E', '$', PS2_SECTION_SIGN, 0,
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0, ' ', 'V', 'F', 'T', 'R', '%', 0,
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0, 'N', 'B', 'H', 'G', 'Z', '&', 0,
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0, 0, 'M', 'J', 'U', '/', '(', 0,
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0, ';', 'K', 'I', 'O', '=', ')', 0,
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0, ':', '_', 'L', PS2_O_DIAERESIS, 'P', '?', 0,
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0, 0, PS2_A_DIAERESIS, 0, PS2_U_DIAERESIS, '`', 0, 0,
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0 /*CapsLock*/, 0 /*Rshift*/, PS2_ENTER /*Enter*/, '*', 0, '\'', 0, 0,
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0, '>', 0, 0, 0, 0, PS2_BACKSPACE, 0,
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0, '1', 0, '4', '7', 0, 0, 0,
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'0', '.', '2', '5', '6', '8', PS2_ESC, 0 /*NumLock*/,
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PS2_F11, '+', '3', '-', '*', '9', PS2_SCROLL, 0,
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0, 0, 0, PS2_F7 },
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1,
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// with altgr
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{0, PS2_F9, 0, PS2_F5, PS2_F3, PS2_F1, PS2_F2, PS2_F12,
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0, PS2_F10, PS2_F8, PS2_F6, PS2_F4, PS2_TAB, 0, 0,
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0, 0 /*Lalt*/, 0 /*Lshift*/, 0, 0 /*Lctrl*/, '@', 0, 0,
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0, 0, 0, 0, 0, 0, PS2_SUPERSCRIPT_TWO, 0,
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0, 0, 0, 0, PS2_CURRENCY_SIGN, 0, PS2_SUPERSCRIPT_THREE, 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, PS2_MICRO_SIGN, 0, 0, '{', '[', 0,
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0, 0, 0, 0, 0, '}', ']', 0,
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0, 0, 0, 0, 0, 0, '\\', 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0 /*CapsLock*/, 0 /*Rshift*/, PS2_ENTER /*Enter*/, '~', 0, '#', 0, 0,
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0, '|', 0, 0, 0, 0, PS2_BACKSPACE, 0,
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0, '1', 0, '4', '7', 0, 0, 0,
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'0', '.', '2', '5', '6', '8', PS2_ESC, 0 /*NumLock*/,
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PS2_F11, '+', '3', '-', '*', '9', PS2_SCROLL, 0,
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0, 0, 0, PS2_F7 }
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};
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const PROGMEM PS2Keymap_t PS2Keymap_French = {
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// without shift
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{0, PS2_F9, 0, PS2_F5, PS2_F3, PS2_F1, PS2_F2, PS2_F12,
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0, PS2_F10, PS2_F8, PS2_F6, PS2_F4, PS2_TAB, PS2_SUPERSCRIPT_TWO, 0,
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0, 0 /*Lalt*/, 0 /*Lshift*/, 0, 0 /*Lctrl*/, 'a', '&', 0,
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0, 0, 'w', 's', 'q', 'z', PS2_e_ACUTE, 0,
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0, 'c', 'x', 'd', 'e', '\'', '"', 0,
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0, ' ', 'v', 'f', 't', 'r', '(', 0,
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0, 'n', 'b', 'h', 'g', 'y', '-', 0,
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0, 0, ',', 'j', 'u', PS2_e_GRAVE, '_', 0,
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0, ';', 'k', 'i', 'o', PS2_a_GRAVE, PS2_c_CEDILLA, 0,
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0, ':', '!', 'l', 'm', 'p', ')', 0,
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0, 0, PS2_u_GRAVE, 0, '^', '=', 0, 0,
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0 /*CapsLock*/, 0 /*Rshift*/, PS2_ENTER /*Enter*/, '$', 0, '*', 0, 0,
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0, '<', 0, 0, 0, 0, PS2_BACKSPACE, 0,
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0, '1', 0, '4', '7', 0, 0, 0,
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'0', '.', '2', '5', '6', '8', PS2_ESC, 0 /*NumLock*/,
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PS2_F11, '+', '3', '-', '*', '9', PS2_SCROLL, 0,
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0, 0, 0, PS2_F7 },
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// with shift
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{0, PS2_F9, 0, PS2_F5, PS2_F3, PS2_F1, PS2_F2, PS2_F12,
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0, PS2_F10, PS2_F8, PS2_F6, PS2_F4, PS2_TAB, 0, 0,
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0, 0 /*Lalt*/, 0 /*Lshift*/, 0, 0 /*Lctrl*/, 'A', '1', 0,
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0, 0, 'W', 'S', 'Q', 'Z', '2', 0,
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0, 'C', 'X', 'D', 'E', '4', '3', 0,
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0, ' ', 'V', 'F', 'T', 'R', '5', 0,
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0, 'N', 'B', 'H', 'G', 'Y', '6', 0,
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0, 0, '?', 'J', 'U', '7', '8', 0,
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0, '.', 'K', 'I', 'O', '0', '9', 0,
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0, '/', PS2_SECTION_SIGN, 'L', 'M', 'P', PS2_DEGREE_SIGN, 0,
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0, 0, '%', 0, PS2_DIAERESIS, '+', 0, 0,
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0 /*CapsLock*/, 0 /*Rshift*/, PS2_ENTER /*Enter*/, PS2_POUND_SIGN, 0, PS2_MICRO_SIGN, 0, 0,
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0, '>', 0, 0, 0, 0, PS2_BACKSPACE, 0,
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0, '1', 0, '4', '7', 0, 0, 0,
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'0', '.', '2', '5', '6', '8', PS2_ESC, 0 /*NumLock*/,
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PS2_F11, '+', '3', '-', '*', '9', PS2_SCROLL, 0,
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0, 0, 0, PS2_F7 },
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1,
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// with altgr
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{0, PS2_F9, 0, PS2_F5, PS2_F3, PS2_F1, PS2_F2, PS2_F12,
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0, PS2_F10, PS2_F8, PS2_F6, PS2_F4, PS2_TAB, 0, 0,
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0, 0 /*Lalt*/, 0 /*Lshift*/, 0, 0 /*Lctrl*/, '@', 0, 0,
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0, 0, 0, 0, 0, 0, '~', 0,
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0, 0, 0, 0, 0 /*PS2_EURO_SIGN*/, '{', '#', 0,
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0, 0, 0, 0, 0, 0, '[', 0,
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0, 0, 0, 0, 0, 0, '|', 0,
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0, 0, 0, 0, 0, '`', '\\', 0,
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0, 0, 0, 0, 0, '@', '^', 0,
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0, 0, 0, 0, 0, 0, ']', 0,
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0, 0, 0, 0, 0, 0, '}', 0,
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0 /*CapsLock*/, 0 /*Rshift*/, PS2_ENTER /*Enter*/, '¤', 0, '#', 0, 0,
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0, '|', 0, 0, 0, 0, PS2_BACKSPACE, 0,
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0, '1', 0, '4', '7', 0, 0, 0,
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'0', '.', '2', '5', '6', '8', PS2_ESC, 0 /*NumLock*/,
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PS2_F11, '+', '3', '-', '*', '9', PS2_SCROLL, 0,
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0, 0, 0, PS2_F7 }
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};
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#define BREAK 0x01
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#define MODIFIER 0x02
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#define SHIFT_L 0x04
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#define SHIFT_R 0x08
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#define ALTGR 0x10
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static char get_iso8859_code(void)
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{
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static uint8_t state=0;
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uint8_t s;
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char c;
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while (1) {
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s = get_scan_code();
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if (!s) return 0;
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if (s == 0xF0) {
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state |= BREAK;
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} else if (s == 0xE0) {
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state |= MODIFIER;
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} else {
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if (state & BREAK) {
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if (s == 0x12) {
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state &= ~SHIFT_L;
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} else if (s == 0x59) {
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state &= ~SHIFT_R;
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} else if (s == 0x11 && (state & MODIFIER)) {
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state &= ~ALTGR;
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}
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// CTRL, ALT & WIN keys could be added
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// but is that really worth the overhead?
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state &= ~(BREAK | MODIFIER);
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continue;
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}
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if (s == 0x12) {
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state |= SHIFT_L;
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continue;
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} else if (s == 0x59) {
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state |= SHIFT_R;
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continue;
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} else if (s == 0x11 && (state & MODIFIER)) {
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state |= ALTGR;
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}
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c = 0;
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if (state & MODIFIER) {
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switch (s) {
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case 0x70: c = PS2_INSERT; break;
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case 0x6C: c = PS2_HOME; break;
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case 0x7D: c = PS2_PAGEUP; break;
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case 0x71: c = PS2_DELETE; break;
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case 0x69: c = PS2_END; break;
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case 0x7A: c = PS2_PAGEDOWN; break;
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case 0x75: c = PS2_UPARROW; break;
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case 0x6B: c = PS2_LEFTARROW; break;
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case 0x72: c = PS2_DOWNARROW; break;
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case 0x74: c = PS2_RIGHTARROW; break;
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case 0x4A: c = '/'; break;
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case 0x5A: c = PS2_ENTER; break;
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default: break;
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}
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} else if ((state & ALTGR) && keymap->uses_altgr) {
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if (s < PS2_KEYMAP_SIZE)
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c = pgm_read_byte(keymap->altgr + s);
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} else if (state & (SHIFT_L | SHIFT_R)) {
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if (s < PS2_KEYMAP_SIZE)
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c = pgm_read_byte(keymap->shift + s);
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} else {
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if (s < PS2_KEYMAP_SIZE)
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c = pgm_read_byte(keymap->noshift + s);
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}
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state &= ~(BREAK | MODIFIER);
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if (c) return c;
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}
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}
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}
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bool PS2Keyboard::available() {
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if (CharBuffer || UTF8next) return true;
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CharBuffer = get_iso8859_code();
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if (CharBuffer) return true;
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return false;
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}
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int PS2Keyboard::read() {
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uint8_t result;
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result = UTF8next;
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if (result) {
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UTF8next = 0;
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} else {
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result = CharBuffer;
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if (result) {
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CharBuffer = 0;
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} else {
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result = get_iso8859_code();
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}
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if (result >= 128) {
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UTF8next = (result & 0x3F) | 0x80;
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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);
|
|
}
|
|
}
|
|
|
|
|