summaryrefslogtreecommitdiffstats
path: root/keyboards/converter/xt_usb/matrix.c
blob: 71211cbc034e6fdd4687cf78dbc65d675bd80a52 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
/*
Copyright 2011 Jun Wako <wakojun@gmail.com>
Copyright 2016 Ethan Apodaca <papodaca@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 "xt.h"
#include "matrix.h"

static void matrix_make(uint8_t code);
static void matrix_break(uint8_t code);

static uint8_t matrix[MATRIX_ROWS];

#define ROW(code) (code >> 3)
#define COL(code) (code & 0x07)

__attribute__ ((weak))
void matrix_init_kb(void) {
    matrix_init_user();
}

__attribute__ ((weak))
void matrix_scan_kb(void) {
    matrix_scan_user();
}

__attribute__ ((weak))
void matrix_init_user(void) {
}

__attribute__ ((weak))
void matrix_scan_user(void) { }

void matrix_init(void) {
    debug_enable = true;
    xt_host_init();

    // initialize matrix state: all keys off
    for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
        matrix[i] = 0x00;
    }

    matrix_init_kb();
}

// convert E0-escaped codes into unused area
static uint8_t move_e0code(uint8_t code) {
    switch(code) {
        // Original IBM XT keyboard has these keys
        case 0x37: return 0x54; // Print Screen
        case 0x46: return 0x55; // Ctrl + Pause
        case 0x1C: return 0x6F; // Keypad Enter
        case 0x35: return 0x7F; // Keypad /

        // Any XT keyboard with these keys?
        // http://download.microsoft.com/download/1/6/1/161ba512-40e2-4cc9-843a-923143f3456c/translate.pdf
        // https://download.microsoft.com/download/1/6/1/161ba512-40e2-4cc9-843a-923143f3456c/scancode.doc
        case 0x5B: return 0x5A; // Left  GUI
        case 0x5C: return 0x5B; // Right GUI
        case 0x5D: return 0x5C; // Application
        case 0x5E: return 0x5D; // Power(not used)
        case 0x5F: return 0x5E; // Sleep(not used)
        case 0x63: return 0x5F; // Wake (not used)
        case 0x48: return 0x60; // Up
        case 0x4B: return 0x61; // Left
        case 0x50: return 0x62; // Down
        case 0x4D: return 0x63; // Right
        case 0x52: return 0x71; // Insert
        case 0x53: return 0x72; // Delete
        case 0x47: return 0x74; // Home
        case 0x4F: return 0x75; // End
        case 0x49: return 0x77; // Home
        case 0x51: return 0x78; // End
        case 0x1D: return 0x7A; // Right Ctrl
        case 0x38: return 0x7C; // Right Alt
    }
    return 0x00;
}

uint8_t matrix_scan(void) {
    static enum {
        XT_STATE_INIT,
        XT_STATE_E0,
        // Pause: E1 1D 45, E1 9D C5
        XT_STATE_E1,
        XT_STATE_E1_1D,
        XT_STATE_E1_9D,
    } state = XT_STATE_INIT;

    uint8_t code = xt_host_recv();

    if (!code) {
        return 0;
    }

    xprintf("%02X ", code);

    switch (state) {
        case XT_STATE_INIT:
            switch (code) {
                case 0xE0:
                    state = XT_STATE_E0;
                    break;
                case 0xE1:
                    state = XT_STATE_E1;
                    break;
                default:
                    if (code < 0x80) {
                        matrix_make(code);
                    } else {
                        matrix_break(code & 0x7F);
                    }
                    break;
            }
            break;
        case XT_STATE_E0:
            switch (code) {
                case 0x2A:
                case 0xAA:
                case 0x36:
                case 0xB6:
                    //ignore fake shift
                    state = XT_STATE_INIT;
                    break;
                default:
                    if (code < 0x80) {
                        matrix_make(move_e0code(code));
                    } else {
                        matrix_break(move_e0code(code & 0x7F));
                    }
                    state = XT_STATE_INIT;
                    break;
            }
            break;
        case XT_STATE_E1:
            switch (code) {
                case 0x1D:
                    state = XT_STATE_E1_1D;
                    break;
                case 0x9D:
                    state = XT_STATE_E1_9D;
                    break;
                default:
                    state = XT_STATE_INIT;
                    break;
            }
            break;
        case XT_STATE_E1_1D:
            switch (code) {
                case 0x45:
                    matrix_make(0x55);
                    break;
                default:
                    state = XT_STATE_INIT;
                    break;
            }
            break;
        case XT_STATE_E1_9D:
            switch (code) {
                case 0x45:
                    matrix_break(0x55);
                    break;
                default:
                    state = XT_STATE_INIT;
                    break;
            }
            break;
        default:
            state = XT_STATE_INIT;
    }

    matrix_scan_kb();

    return 1;
}

inline
uint8_t matrix_get_row(uint8_t row) {
    return matrix[row];
}

inline static void matrix_make(uint8_t code) {
    if (!matrix_is_on(ROW(code), COL(code))) {
        matrix[ROW(code)] |= 1 << COL(code);
    }
}

inline static void matrix_break(uint8_t code) {
    if (matrix_is_on(ROW(code), COL(code))) {
        matrix[ROW(code)] &= ~(1 << COL(code));
    }
}

void matrix_clear(void) {
    for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;
}

bool matrix_is_on(uint8_t row, uint8_t col) {
    return (matrix_get_row(row) & (1 << col));
}

#if (MATRIX_COLS <= 8)
#    define print_matrix_header() print("\nr/c 01234567\n")
#    define print_matrix_row(row) print_bin_reverse8(matrix_get_row(row))
#elif (MATRIX_COLS <= 16)
#    define print_matrix_header() print("\nr/c 0123456789ABCDEF\n")
#    define print_matrix_row(row) print_bin_reverse16(matrix_get_row(row))
#elif (MATRIX_COLS <= 32)
#    define print_matrix_header() print("\nr/c 0123456789ABCDEF0123456789ABCDEF\n")
#    define print_matrix_row(row) print_bin_reverse32(matrix_get_row(row))
#endif

void matrix_print(void) {
    print_matrix_header();

    for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
        print_hex8(row);
        print(": ");
        print_matrix_row(row);
        print("\n");
    }
}

/*
XT Scancodes
============
- http://download.microsoft.com/download/1/6/1/161ba512-40e2-4cc9-843a-923143f3456c/translate.pdf
- https://download.microsoft.com/download/1/6/1/161ba512-40e2-4cc9-843a-923143f3456c/scancode.doc

01-53: Normal codes used in original XT keyboard
54-7F: Not used in original XT keyboard

	0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F
    50  -   -   -   -   *   *   x   x   x   x   *   *   *   o   o   o
    60  *   *   *   *   x   x   x   x   x   x   x   x   x   x   x   *
    70  x   *   *   x   *   *   x   *   *   x   *   x   *   x   x   *

-: codes existed in original XT keyboard
*: E0-escaped codes converted into unused code area(internal use in TMK)
x: Non-espcaped codes(not used in real keyboards probably, for CodeSet2-CodeSet1 translation purpose)
o: reserved

Usage in TMK:

    00  (reserved) DO NOT USE
    54  PrintScr*
    55  Pause*
    56  Euro2
    57  F11
    58  F12
    59  Keypad =
    5A  LGUI*
    5B  RGUI*
    5C  APP*
    5D  (reserved)
    5E  (reserved)
    5F  (reserved)
    60  cursor*
    61  cursor*
    62  cursor*
    63  cursor*
    64  F13
    65  F14
    66  F15
    67  F16
    68  F17
    69  F18
    6A  F19
    6B  F20
    6C  F21
    6D  F22
    6E  F23
    6F  Keypad Enter*
    70  KANA
    71  nav*
    72  nav*
    73  RO
    74  nav*
    75  nav*
    76  F24
    77  nav*
    78  nav*
    79  HENKAN
    7A  RCTL*
    7B  MUHENKAN
    7C  RALT*
    7D  JPY
    7E  Keypad ,
    7F  Keypad / *

*/