summaryrefslogtreecommitdiffstats
path: root/keyboards/ai03/orbit/matrix.c
blob: 024233524caf7eab7a43ee15e001f3a23a50b8a8 (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
311
312
313
314
315
316
317
318
319
320
321
322
323
/*
Copyright 2012 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/>.
*/

/*
 * scan matrix
 */
#include <stdint.h>
#include <stdbool.h>
#include "wait.h"
#include "util.h"
#include "matrix.h"
#include "split_util.h"
#include "config.h"
#include "split_flags.h"
#include "quantum.h"
#include "debounce.h"
#include "transport.h"

#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))
#  define matrix_bitpop(i) bitpop(matrix[i])
#  define ROW_SHIFTER ((uint8_t)1)
#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))
#  define matrix_bitpop(i) bitpop16(matrix[i])
#  define ROW_SHIFTER ((uint16_t)1)
#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))
#  define matrix_bitpop(i) bitpop32(matrix[i])
#  define ROW_SHIFTER ((uint32_t)1)
#endif

#define ERROR_DISCONNECT_COUNT 5

//#define ROWS_PER_HAND (MATRIX_ROWS / 2)

#ifdef DIRECT_PINS
static pin_t direct_pins[MATRIX_ROWS][MATRIX_COLS] = DIRECT_PINS;
#else
static pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
static pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
#endif

/* matrix state(1:on, 0:off) */
static matrix_row_t matrix[MATRIX_ROWS];
static matrix_row_t raw_matrix[ROWS_PER_HAND];

// row offsets for each hand
uint8_t thisHand, thatHand;

// user-defined overridable functions

__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) {}

__attribute__((weak)) void matrix_slave_scan_user(void) {}

// helper functions

inline uint8_t matrix_rows(void) { return MATRIX_ROWS; }

inline uint8_t matrix_cols(void) { return MATRIX_COLS; }

inline bool matrix_is_on(uint8_t row, uint8_t col) { return (matrix[row] & ((matrix_row_t)1 << col)); }

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

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");
  }
}

uint8_t matrix_key_count(void) {
  uint8_t count = 0;
  for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
    count += matrix_bitpop(i);
  }
  return count;
}

// matrix code

#ifdef DIRECT_PINS

static void init_pins(void) {
  for (int row = 0; row < MATRIX_ROWS; row++) {
    for (int col = 0; col < MATRIX_COLS; col++) {
      pin_t pin = direct_pins[row][col];
      if (pin != NO_PIN) {
        setPinInputHigh(pin);
      }
    }
  }
}

static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
  matrix_row_t last_row_value = current_matrix[current_row];
  current_matrix[current_row] = 0;

  for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
    pin_t pin = direct_pins[current_row][col_index];
    if (pin != NO_PIN) {
      current_matrix[current_row] |= readPin(pin) ? 0 : (ROW_SHIFTER << col_index);
    }
  }

  return (last_row_value != current_matrix[current_row]);
}

#elif (DIODE_DIRECTION == COL2ROW)

static void select_row(uint8_t row) {
  setPinOutput(row_pins[row]);
  writePinLow(row_pins[row]);
}

static void unselect_row(uint8_t row) { setPinInputHigh(row_pins[row]); }

static void unselect_rows(void) {
  for (uint8_t x = 0; x < ROWS_PER_HAND; x++) {
    setPinInputHigh(row_pins[x]);
  }
}

static void init_pins(void) {
  unselect_rows();
  for (uint8_t x = 0; x < MATRIX_COLS; x++) {
    setPinInputHigh(col_pins[x]);
  }
}

static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
  // Store last value of row prior to reading
  matrix_row_t last_row_value = current_matrix[current_row];

  // Clear data in matrix row
  current_matrix[current_row] = 0;

  // Select row and wait for row selecton to stabilize
  select_row(current_row);
  wait_us(30);

  // For each col...
  for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
    // Populate the matrix row with the state of the col pin
    current_matrix[current_row] |= readPin(col_pins[col_index]) ? 0 : (ROW_SHIFTER << col_index);
  }

  // Unselect row
  unselect_row(current_row);

  return (last_row_value != current_matrix[current_row]);
}

#elif (DIODE_DIRECTION == ROW2COL)

static void select_col(uint8_t col) {
  setPinOutput(col_pins[col]);
  writePinLow(col_pins[col]);
}

static void unselect_col(uint8_t col) { setPinInputHigh(col_pins[col]); }

static void unselect_cols(void) {
  for (uint8_t x = 0; x < MATRIX_COLS; x++) {
    setPinInputHigh(col_pins[x]);
  }
}

static void init_pins(void) {
  unselect_cols();
  for (uint8_t x = 0; x < ROWS_PER_HAND; x++) {
    setPinInputHigh(row_pins[x]);
  }
}

static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col) {
  bool matrix_changed = false;

  // Select col and wait for col selecton to stabilize
  select_col(current_col);
  wait_us(30);

  // For each row...
  for (uint8_t row_index = 0; row_index < ROWS_PER_HAND; row_index++) {
    // Store last value of row prior to reading
    matrix_row_t last_row_value = current_matrix[row_index];

    // Check row pin state
    if (readPin(row_pins[row_index])) {
      // Pin HI, clear col bit
      current_matrix[row_index] &= ~(ROW_SHIFTER << current_col);
    } else {
      // Pin LO, set col bit
      current_matrix[row_index] |= (ROW_SHIFTER << current_col);
    }

    // Determine if the matrix changed state
    if ((last_row_value != current_matrix[row_index]) && !(matrix_changed)) {
      matrix_changed = true;
    }
  }

  // Unselect col
  unselect_col(current_col);

  return matrix_changed;
}

#endif

void matrix_init(void) {
  debug_enable = true;
  debug_matrix = true;
  debug_mouse  = true;

  // Set pinout for right half if pinout for that half is defined
  if (!isLeftHand) {
#ifdef MATRIX_ROW_PINS_RIGHT
    const uint8_t row_pins_right[MATRIX_ROWS] = MATRIX_ROW_PINS_RIGHT;
    for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
      row_pins[i] = row_pins_right[i];
    }
#endif
#ifdef MATRIX_COL_PINS_RIGHT
    const uint8_t col_pins_right[MATRIX_COLS] = MATRIX_COL_PINS_RIGHT;
    for (uint8_t i = 0; i < MATRIX_COLS; i++) {
      col_pins[i] = col_pins_right[i];
    }
#endif
  }

  thisHand = isLeftHand ? 0 : (ROWS_PER_HAND);
  thatHand = ROWS_PER_HAND - thisHand;

  // initialize key pins
  init_pins();

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

  debounce_init(ROWS_PER_HAND);

  matrix_init_quantum();
}

uint8_t _matrix_scan(void) {
  bool changed = false;

#if defined(DIRECT_PINS) || (DIODE_DIRECTION == COL2ROW)
  // Set row, read cols
  for (uint8_t current_row = 0; current_row < ROWS_PER_HAND; current_row++) {
    changed |= read_cols_on_row(raw_matrix, current_row);
  }
#elif (DIODE_DIRECTION == ROW2COL)
  // Set col, read rows
  for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
    changed |= read_rows_on_col(raw_matrix, current_col);
  }
#endif

  debounce(raw_matrix, matrix + thisHand, ROWS_PER_HAND, changed);

  return 1;
}

uint8_t matrix_scan(void) {
  uint8_t ret = _matrix_scan();

  if (is_keyboard_master()) {
    static uint8_t error_count;

    if (!transport_master(matrix + thatHand)) {
      error_count++;

      if (error_count > ERROR_DISCONNECT_COUNT) {
        // reset other half if disconnected
        for (int i = 0; i < ROWS_PER_HAND; ++i) {
          matrix[thatHand + i] = 0;
        }
      }
    } else {
      error_count = 0;
    }

    matrix_scan_quantum();
  } else {
    transport_slave(matrix + thisHand);
    matrix_slave_scan_user();
  }

  return ret;
}