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Arduino PS2Keyboard Library for Japanese
Raw
PS2Keyboard.cpp
/*
PS2Keyboard.cpp - PS2Keyboard library
Copyright (c) 2007 Free Software Foundation. All right reserved.
Written by Christian Weichel <info@32leaves.net>
** Mostly rewritten Paul Stoffregen <paul@pjrc.com> 2010, 2011
** Modified for use beginning with Arduino 13 by L. Abraham Smith, <n3bah@microcompdesign.com> *
** Modified for easy interrup pin assignement on method begin(datapin,irq_pin). Cuningan <cuninganreset@gmail.com> **
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 2.3 (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_Japanese = {
// 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, 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 /*CapsLock*/, 0 /*Rshift*/, PS2_ENTER /*Enter*/, '[', 0, ']', 0, 0,
0, 0, 0, 0, 0 /*Henkan*/, 0, PS2_BACKSPACE, 0 /*MuHenkan*/,
0, '1', '\\', '4', '7', 'I', 'J', 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*/, '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,
0, '>', '?', 'L', '+', 'P', '=', 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', '|', '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 }
};
#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;
}
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;
}
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=0;
DataPin = data_pin;
keymap = &map;
// 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
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
default:
irq_num = 0;
break;
}
head = 0;
tail = 0;
attachInterrupt(irq_num, ps2interrupt, FALLING);
}
Raw
PS2Keyboard.h
/*
PS2Keyboard.h - PS2Keyboard library
Copyright (c) 2007 Free Software Foundation. All right reserved.
Written by Christian Weichel <info@32leaves.net>
** Mostly rewritten Paul Stoffregen <paul@pjrc.com>, June 2010
** Modified for use with Arduino 13 by L. Abraham Smith, <n3bah@microcompdesign.com> *
** Modified for easy interrup pin assignement on method begin(datapin,irq_pin). Cuningan <cuninganreset@gmail.com> **
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
*/
#ifndef PS2Keyboard_h
#define PS2Keyboard_h
#include <avr/io.h>
#include <avr/interrupt.h>
#include <avr/pgmspace.h>
#if defined(ARDUINO) && ARDUINO >= 100
#include "Arduino.h" // for attachInterrupt, FALLING
#else
#include "WProgram.h"
#endif
// Every call to read() returns a single byte for each
// keystroke. These configure what byte will be returned
// for each "special" key. To ignore a key, use zero.
#define PS2_TAB 9
#define PS2_ENTER 13
#define PS2_BACKSPACE 127
#define PS2_ESC 27
#define PS2_INSERT 0
#define PS2_DELETE 127
#define PS2_HOME 0
#define PS2_END 0
#define PS2_PAGEUP 25
#define PS2_PAGEDOWN 26
#define PS2_UPARROW 11
#define PS2_LEFTARROW 8
#define PS2_DOWNARROW 10
#define PS2_RIGHTARROW 21
#define PS2_F1 0
#define PS2_F2 0
#define PS2_F3 0
#define PS2_F4 0
#define PS2_F5 0
#define PS2_F6 0
#define PS2_F7 0
#define PS2_F8 0
#define PS2_F9 0
#define PS2_F10 0
#define PS2_F11 0
#define PS2_F12 0
#define PS2_SCROLL 0
#define PS2_INVERTED_EXCLAMATION 161 // !
#define PS2_CENT_SIGN 162 // ￠
#define PS2_POUND_SIGN 163 // ￡
#define PS2_CURRENCY_SIGN 164 // ?
#define PS2_YEN_SIGN 165 // \
#define PS2_BROKEN_BAR 166 // |
#define PS2_SECTION_SIGN 167 // §
#define PS2_DIAERESIS 168 // ¨
#define PS2_COPYRIGHT_SIGN 169 // c
#define PS2_FEMININE_ORDINAL 170 // a
#define PS2_LEFT_DOUBLE_ANGLE_QUOTE 171 // ≪
#define PS2_NOT_SIGN 172 // ￢
#define PS2_HYPHEN 173
#define PS2_REGISTERED_SIGN 174 // R
#define PS2_MACRON 175 // ￣
#define PS2_DEGREE_SIGN 176 // °
#define PS2_PLUS_MINUS_SIGN 177 // ±
#define PS2_SUPERSCRIPT_TWO 178 // 2
#define PS2_SUPERSCRIPT_THREE 179 // 3
#define PS2_ACUTE_ACCENT 180 // ´
#define PS2_MICRO_SIGN 181 // μ
#define PS2_PILCROW_SIGN 182 //
#define PS2_MIDDLE_DOT 183 // ・
#define PS2_CEDILLA 184 // ，
#define PS2_SUPERSCRIPT_ONE 185 // 1
#define PS2_MASCULINE_ORDINAL 186 // o
#define PS2_RIGHT_DOUBLE_ANGLE_QUOTE 187 // ≫
#define PS2_FRACTION_ONE_QUARTER 188 // ?
#define PS2_FRACTION_ONE_HALF 189 // ?
#define PS2_FRACTION_THREE_QUARTERS 190 // ?
#define PS2_INVERTED_QUESTION MARK 191 // ?
#define PS2_A_GRAVE 192 // A
#define PS2_A_ACUTE 193 // A
#define PS2_A_CIRCUMFLEX 194 // A
#define PS2_A_TILDE 195 // A
#define PS2_A_DIAERESIS 196 // A
#define PS2_A_RING_ABOVE 197 // A
#define PS2_AE 198 // A
#define PS2_C_CEDILLA 199 // C
#define PS2_E_GRAVE 200 // E
#define PS2_E_ACUTE 201 // E
#define PS2_E_CIRCUMFLEX 202 // E
#define PS2_E_DIAERESIS 203 // E
#define PS2_I_GRAVE 204 // I
#define PS2_I_ACUTE 205 // I
#define PS2_I_CIRCUMFLEX 206 // I
#define PS2_I_DIAERESIS 207 // I
#define PS2_ETH 208 // D
#define PS2_N_TILDE 209 // N
#define PS2_O_GRAVE 210 // O
#define PS2_O_ACUTE 211 // O
#define PS2_O_CIRCUMFLEX 212 // O
#define PS2_O_TILDE 213 // O
#define PS2_O_DIAERESIS 214 // O
#define PS2_MULTIPLICATION 215 // ×
#define PS2_O_STROKE 216 // O
#define PS2_U_GRAVE 217 // U
#define PS2_U_ACUTE 218 // U
#define PS2_U_CIRCUMFLEX 219 // U
#define PS2_U_DIAERESIS 220 // U
#define PS2_Y_ACUTE 221 // Y
#define PS2_THORN 222 // T
#define PS2_SHARP_S 223 // s
#define PS2_a_GRAVE 224 // a
#define PS2_a_ACUTE 225 // a
#define PS2_a_CIRCUMFLEX 226 // a
#define PS2_a_TILDE 227 // a
#define PS2_a_DIAERESIS 228 // a
#define PS2_a_RING_ABOVE 229 // a
#define PS2_ae 230 // a
#define PS2_c_CEDILLA 231 // c
#define PS2_e_GRAVE 232 // e
#define PS2_e_ACUTE 233 // e
#define PS2_e_CIRCUMFLEX 234 // e
#define PS2_e_DIAERESIS 235 // e
#define PS2_i_GRAVE 236 // i
#define PS2_i_ACUTE 237 // i
#define PS2_i_CIRCUMFLEX 238 // i
#define PS2_i_DIAERESIS 239 // i
#define PS2_eth 240 // d
#define PS2_n_TILDE 241 // n
#define PS2_o_GRAVE 242 // o
#define PS2_o_ACUTE 243 // o
#define PS2_o_CIRCUMFLEX 244 // o
#define PS2_o_TILDE 245 // o
#define PS2_o_DIAERESIS 246 // o
#define PS2_DIVISION 247 // ÷
#define PS2_o_STROKE 248 // o
#define PS2_u_GRAVE 249 // u
#define PS2_u_ACUTE 250 // u
#define PS2_u_CIRCUMFLEX 251 // u
#define PS2_u_DIAERESIS 252 // u
#define PS2_y_ACUTE 253 // y
#define PS2_thorn 254 // t
#define PS2_y_DIAERESIS 255 // y
#define PS2_KEYMAP_SIZE 136
typedef struct {
uint8_t noshift[PS2_KEYMAP_SIZE];
uint8_t shift[PS2_KEYMAP_SIZE];
uint8_t uses_altgr;
uint8_t altgr[PS2_KEYMAP_SIZE];
} PS2Keymap_t;
extern const PROGMEM PS2Keymap_t PS2Keymap_US;
extern const PROGMEM PS2Keymap_t PS2Keymap_German;
extern const PROGMEM PS2Keymap_t PS2Keymap_Japanese;
/**
* Purpose: Provides an easy access to PS2 keyboards
* Author: Christian Weichel
*/
class PS2Keyboard {
public:
/**
* This constructor does basically nothing. Please call the begin(int,int)
* method before using any other method of this class.
*/
PS2Keyboard();
/**
* Starts the keyboard "service" by registering the external interrupt.
* setting the pin modes correctly and driving those needed to high.
* The propably best place to call this method is in the setup routine.
*/
static void begin(uint8_t dataPin, uint8_t irq_pin, const PS2Keymap_t &map = PS2Keymap_US);
/**
* Returns true if there is a char to be read, false if not.
*/
static bool available();
/**
* Returns the char last read from the keyboard.
* If there is no char availble, -1 is returned.
*/
static int read();
};
// interrupt pins for known boards
#if !defined(CORE_INT0_PIN)
#if defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__) // Arduino Mega
#define CORE_INT0_PIN 2
#define CORE_INT1_PIN 3
#define CORE_INT2_PIN 21
#define CORE_INT3_PIN 20
#define CORE_INT4_PIN 19
#define CORE_INT5_PIN 18
#elif defined(__AVR_ATmega644P__) || defined(__AVR_ATmega644__) // Sanguino
#define CORE_INT0_PIN 10
#define CORE_INT1_PIN 11
#define CORE_INT2_PIN 2
#else // Arduino Duemilanove, Diecimila, LilyPad, Mini, Fio, etc...
#define CORE_INT0_PIN 2
#define CORE_INT1_PIN 3
#endif
#endif
#endif
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