487 lines
14 KiB
C
487 lines
14 KiB
C
/*
|
|
Copyright 2011 Jun Wako <wakojun@gmail.com>
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program 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 General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <stdint.h>
|
|
#include <stdbool.h>
|
|
#include "action.h"
|
|
#include "print.h"
|
|
#include "util.h"
|
|
#include "debug.h"
|
|
#include "ps2.h"
|
|
#include "matrix.h"
|
|
|
|
|
|
static void matrix_make(uint8_t code);
|
|
static void matrix_break(uint8_t code);
|
|
static void matrix_clear(void);
|
|
#ifdef MATRIX_HAS_GHOST
|
|
static bool matrix_has_ghost_in_row(uint8_t row);
|
|
#endif
|
|
|
|
|
|
/*
|
|
* Matrix Array usage:
|
|
* 'Scan Code Set 2' is assigned into 256(32x8)cell matrix.
|
|
* Hmm, it is very sparse and not efficient :(
|
|
*
|
|
* Notes:
|
|
* Both 'Hanguel/English'(F1) and 'Hanja'(F2) collide with 'Delete'(E0 71) and 'Down'(E0 72).
|
|
* These two Korean keys need exceptional handling and are not supported for now. Sorry.
|
|
*
|
|
* 8bit wide
|
|
* +---------+
|
|
* 0| |
|
|
* :| XX | 00-7F for normal codes(without E0-prefix)
|
|
* f|_________|
|
|
* 10| |
|
|
* :| E0 YY | 80-FF for E0-prefixed codes
|
|
* 1f| | (<YY>|0x80) is used as matrix position.
|
|
* +---------+
|
|
*
|
|
* Exceptions:
|
|
* 0x83: F7(0x83) This is a normal code but beyond 0x7F.
|
|
* 0xFC: PrintScreen
|
|
* 0xFE: Pause
|
|
*/
|
|
static uint8_t matrix[MATRIX_ROWS];
|
|
#define ROW(code) (code>>3)
|
|
#define COL(code) (code&0x07)
|
|
|
|
// matrix positions for exceptional keys
|
|
#define F7 (0x83)
|
|
#define PRINT_SCREEN (0xFC)
|
|
#define PAUSE (0xFE)
|
|
|
|
static bool is_modified = false;
|
|
|
|
|
|
inline
|
|
uint8_t matrix_rows(void)
|
|
{
|
|
return MATRIX_ROWS;
|
|
}
|
|
|
|
inline
|
|
uint8_t matrix_cols(void)
|
|
{
|
|
return MATRIX_COLS;
|
|
}
|
|
|
|
void matrix_init(void)
|
|
{
|
|
debug_enable = true;
|
|
ps2_host_init();
|
|
|
|
// initialize matrix state: all keys off
|
|
for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* PS/2 Scan Code Set 2: Exceptional Handling
|
|
*
|
|
* There are several keys to be handled exceptionally.
|
|
* The scan code for these keys are varied or prefix/postfix'd
|
|
* depending on modifier key state.
|
|
*
|
|
* Keyboard Scan Code Specification:
|
|
* http://www.microsoft.com/whdc/archive/scancode.mspx
|
|
* http://download.microsoft.com/download/1/6/1/161ba512-40e2-4cc9-843a-923143f3456c/scancode.doc
|
|
*
|
|
*
|
|
* 1) Insert, Delete, Home, End, PageUp, PageDown, Up, Down, Right, Left
|
|
* a) when Num Lock is off
|
|
* modifiers | make | break
|
|
* ----------+---------------------------+----------------------
|
|
* Ohter | <make> | <break>
|
|
* LShift | E0 F0 12 <make> | <break> E0 12
|
|
* RShift | E0 F0 59 <make> | <break> E0 59
|
|
* L+RShift | E0 F0 12 E0 F0 59 <make> | <break> E0 59 E0 12
|
|
*
|
|
* b) when Num Lock is on
|
|
* modifiers | make | break
|
|
* ----------+---------------------------+----------------------
|
|
* Other | E0 12 <make> | <break> E0 F0 12
|
|
* Shift'd | <make> | <break>
|
|
*
|
|
* Handling: These prefix/postfix codes are ignored.
|
|
*
|
|
*
|
|
* 2) Keypad /
|
|
* modifiers | make | break
|
|
* ----------+---------------------------+----------------------
|
|
* Ohter | <make> | <break>
|
|
* LShift | E0 F0 12 <make> | <break> E0 12
|
|
* RShift | E0 F0 59 <make> | <break> E0 59
|
|
* L+RShift | E0 F0 12 E0 F0 59 <make> | <break> E0 59 E0 12
|
|
*
|
|
* Handling: These prefix/postfix codes are ignored.
|
|
*
|
|
*
|
|
* 3) PrintScreen
|
|
* modifiers | make | break
|
|
* ----------+--------------+-----------------------------------
|
|
* Other | E0 12 E0 7C | E0 F0 7C E0 F0 12
|
|
* Shift'd | E0 7C | E0 F0 7C
|
|
* Control'd | E0 7C | E0 F0 7C
|
|
* Alt'd | 84 | F0 84
|
|
*
|
|
* Handling: These prefix/postfix codes are ignored, and both scan codes
|
|
* 'E0 7C' and 84 are seen as PrintScreen.
|
|
*
|
|
* 4) Pause
|
|
* modifiers | make(no break code)
|
|
* ----------+--------------------------------------------------
|
|
* Other | E1 14 77 E1 F0 14 F0 77
|
|
* Control'd | E0 7E E0 F0 7E
|
|
*
|
|
* Handling: Both code sequences are treated as a whole.
|
|
* And we need a ad hoc 'pseudo break code' hack to get the key off
|
|
* because it has no break code.
|
|
*
|
|
*/
|
|
uint8_t matrix_scan(void)
|
|
{
|
|
|
|
// scan code reading states
|
|
static enum {
|
|
INIT,
|
|
F0,
|
|
E0,
|
|
E0_F0,
|
|
// Pause
|
|
E1,
|
|
E1_14,
|
|
E1_14_77,
|
|
E1_14_77_E1,
|
|
E1_14_77_E1_F0,
|
|
E1_14_77_E1_F0_14,
|
|
E1_14_77_E1_F0_14_F0,
|
|
// Control'd Pause
|
|
E0_7E,
|
|
E0_7E_E0,
|
|
E0_7E_E0_F0,
|
|
} state = INIT;
|
|
|
|
|
|
is_modified = false;
|
|
|
|
// 'pseudo break code' hack
|
|
if (matrix_is_on(ROW(PAUSE), COL(PAUSE))) {
|
|
matrix_break(PAUSE);
|
|
}
|
|
|
|
uint8_t code = ps2_host_recv();
|
|
if (code) xprintf("%i\r\n", code);
|
|
if (!ps2_error) {
|
|
switch (state) {
|
|
case INIT:
|
|
switch (code) {
|
|
case 0xE0:
|
|
state = E0;
|
|
break;
|
|
case 0xF0:
|
|
state = F0;
|
|
break;
|
|
case 0xE1:
|
|
state = E1;
|
|
break;
|
|
case 0x83: // F7
|
|
matrix_make(F7);
|
|
state = INIT;
|
|
break;
|
|
case 0x84: // Alt'd PrintScreen
|
|
matrix_make(PRINT_SCREEN);
|
|
state = INIT;
|
|
break;
|
|
case 0x00: // Overrun [3]p.25
|
|
matrix_clear();
|
|
clear_keyboard();
|
|
print("Overrun\n");
|
|
state = INIT;
|
|
break;
|
|
default: // normal key make
|
|
if (code < 0x80) {
|
|
matrix_make(code);
|
|
} else {
|
|
matrix_clear();
|
|
clear_keyboard();
|
|
xprintf("unexpected scan code at INIT: %02X\n", code);
|
|
}
|
|
state = INIT;
|
|
}
|
|
break;
|
|
case E0: // E0-Prefixed
|
|
switch (code) {
|
|
case 0x12: // to be ignored
|
|
case 0x59: // to be ignored
|
|
state = INIT;
|
|
break;
|
|
case 0x7E: // Control'd Pause
|
|
state = E0_7E;
|
|
break;
|
|
case 0xF0:
|
|
state = E0_F0;
|
|
break;
|
|
default:
|
|
if (code < 0x80) {
|
|
matrix_make(code|0x80);
|
|
} else {
|
|
matrix_clear();
|
|
clear_keyboard();
|
|
xprintf("unexpected scan code at E0: %02X\n", code);
|
|
}
|
|
state = INIT;
|
|
}
|
|
break;
|
|
case F0: // Break code
|
|
switch (code) {
|
|
case 0x83: // F7
|
|
matrix_break(F7);
|
|
state = INIT;
|
|
break;
|
|
case 0x84: // Alt'd PrintScreen
|
|
matrix_break(PRINT_SCREEN);
|
|
state = INIT;
|
|
break;
|
|
case 0xF0:
|
|
matrix_clear();
|
|
clear_keyboard();
|
|
xprintf("unexpected scan code at F0: F0(clear and cont.)\n");
|
|
break;
|
|
default:
|
|
if (code < 0x80) {
|
|
matrix_break(code);
|
|
} else {
|
|
matrix_clear();
|
|
clear_keyboard();
|
|
xprintf("unexpected scan code at F0: %02X\n", code);
|
|
}
|
|
state = INIT;
|
|
}
|
|
break;
|
|
case E0_F0: // Break code of E0-prefixed
|
|
switch (code) {
|
|
case 0x12: // to be ignored
|
|
case 0x59: // to be ignored
|
|
state = INIT;
|
|
break;
|
|
default:
|
|
if (code < 0x80) {
|
|
matrix_break(code|0x80);
|
|
} else {
|
|
matrix_clear();
|
|
clear_keyboard();
|
|
xprintf("unexpected scan code at E0_F0: %02X\n", code);
|
|
}
|
|
state = INIT;
|
|
}
|
|
break;
|
|
// following are states of Pause
|
|
case E1:
|
|
switch (code) {
|
|
case 0x14:
|
|
state = E1_14;
|
|
break;
|
|
default:
|
|
state = INIT;
|
|
}
|
|
break;
|
|
case E1_14:
|
|
switch (code) {
|
|
case 0x77:
|
|
state = E1_14_77;
|
|
break;
|
|
default:
|
|
state = INIT;
|
|
}
|
|
break;
|
|
case E1_14_77:
|
|
switch (code) {
|
|
case 0xE1:
|
|
state = E1_14_77_E1;
|
|
break;
|
|
default:
|
|
state = INIT;
|
|
}
|
|
break;
|
|
case E1_14_77_E1:
|
|
switch (code) {
|
|
case 0xF0:
|
|
state = E1_14_77_E1_F0;
|
|
break;
|
|
default:
|
|
state = INIT;
|
|
}
|
|
break;
|
|
case E1_14_77_E1_F0:
|
|
switch (code) {
|
|
case 0x14:
|
|
state = E1_14_77_E1_F0_14;
|
|
break;
|
|
default:
|
|
state = INIT;
|
|
}
|
|
break;
|
|
case E1_14_77_E1_F0_14:
|
|
switch (code) {
|
|
case 0xF0:
|
|
state = E1_14_77_E1_F0_14_F0;
|
|
break;
|
|
default:
|
|
state = INIT;
|
|
}
|
|
break;
|
|
case E1_14_77_E1_F0_14_F0:
|
|
switch (code) {
|
|
case 0x77:
|
|
matrix_make(PAUSE);
|
|
state = INIT;
|
|
break;
|
|
default:
|
|
state = INIT;
|
|
}
|
|
break;
|
|
// Following are states of Control'd Pause
|
|
case E0_7E:
|
|
if (code == 0xE0)
|
|
state = E0_7E_E0;
|
|
else
|
|
state = INIT;
|
|
break;
|
|
case E0_7E_E0:
|
|
if (code == 0xF0)
|
|
state = E0_7E_E0_F0;
|
|
else
|
|
state = INIT;
|
|
break;
|
|
case E0_7E_E0_F0:
|
|
if (code == 0x7E)
|
|
matrix_make(PAUSE);
|
|
state = INIT;
|
|
break;
|
|
default:
|
|
state = INIT;
|
|
}
|
|
}
|
|
|
|
// TODO: request RESEND when error occurs?
|
|
/*
|
|
if (PS2_IS_FAILED(ps2_error)) {
|
|
uint8_t ret = ps2_host_send(PS2_RESEND);
|
|
xprintf("Resend: %02X\n", ret);
|
|
}
|
|
*/
|
|
return 1;
|
|
}
|
|
|
|
bool matrix_is_modified(void)
|
|
{
|
|
return is_modified;
|
|
}
|
|
|
|
inline
|
|
bool matrix_has_ghost(void)
|
|
{
|
|
#ifdef MATRIX_HAS_GHOST
|
|
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
|
|
if (matrix_has_ghost_in_row(i))
|
|
return true;
|
|
}
|
|
#endif
|
|
return false;
|
|
}
|
|
|
|
inline
|
|
bool matrix_is_on(uint8_t row, uint8_t col)
|
|
{
|
|
return (matrix[row] & (1<<col));
|
|
}
|
|
|
|
inline
|
|
uint8_t matrix_get_row(uint8_t row)
|
|
{
|
|
return matrix[row];
|
|
}
|
|
|
|
void matrix_print(void)
|
|
{
|
|
print("\nr/c 01234567\n");
|
|
for (uint8_t row = 0; row < matrix_rows(); row++) {
|
|
phex(row); print(": ");
|
|
pbin_reverse(matrix_get_row(row));
|
|
#ifdef MATRIX_HAS_GHOST
|
|
if (matrix_has_ghost_in_row(row)) {
|
|
print(" <ghost");
|
|
}
|
|
#endif
|
|
print("\n");
|
|
}
|
|
}
|
|
|
|
uint8_t matrix_key_count(void)
|
|
{
|
|
uint8_t count = 0;
|
|
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
|
|
count += bitpop(matrix[i]);
|
|
}
|
|
return count;
|
|
}
|
|
|
|
#ifdef MATRIX_HAS_GHOST
|
|
inline
|
|
static bool matrix_has_ghost_in_row(uint8_t row)
|
|
{
|
|
// no ghost exists in case less than 2 keys on
|
|
if (((matrix[row] - 1) & matrix[row]) == 0)
|
|
return false;
|
|
|
|
// ghost exists in case same state as other row
|
|
for (uint8_t i=0; i < MATRIX_ROWS; i++) {
|
|
if (i != row && (matrix[i] & matrix[row]) == matrix[row])
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
#endif
|
|
|
|
|
|
inline
|
|
static void matrix_make(uint8_t code)
|
|
{
|
|
if (!matrix_is_on(ROW(code), COL(code))) {
|
|
matrix[ROW(code)] |= 1<<COL(code);
|
|
is_modified = true;
|
|
}
|
|
}
|
|
|
|
inline
|
|
static void matrix_break(uint8_t code)
|
|
{
|
|
if (matrix_is_on(ROW(code), COL(code))) {
|
|
matrix[ROW(code)] &= ~(1<<COL(code));
|
|
is_modified = true;
|
|
}
|
|
}
|
|
|
|
inline
|
|
static void matrix_clear(void)
|
|
{
|
|
for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;
|
|
}
|