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-rw-r--r--keyboards/miniaxe/matrix.c641
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diff --git a/keyboards/miniaxe/matrix.c b/keyboards/miniaxe/matrix.c
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1/*
2Copyright 2012 Jun Wako <wakojun@gmail.com>
3
4This program is free software: you can redistribute it and/or modify
5it under the terms of the GNU General Public License as published by
6the Free Software Foundation, either version 2 of the License, or
7(at your option) any later version.
8
9This program is distributed in the hope that it will be useful,
10but WITHOUT ANY WARRANTY; without even the implied warranty of
11MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12GNU General Public License for more details.
13
14You should have received a copy of the GNU General Public License
15along with this program. If not, see <http://www.gnu.org/licenses/>.
16*/
17
18/*
19 * scan matrix
20 */
21#include <stdint.h>
22#include <stdbool.h>
23#include <avr/io.h>
24#include "wait.h"
25#include "print.h"
26#include "debug.h"
27#include "util.h"
28#include "matrix.h"
29#include "split_util.h"
30#include "pro_micro.h"
31#include "config.h"
32#include "timer.h"
33#include "split_flags.h"
34
35#ifdef BACKLIGHT_ENABLE
36# include "backlight.h"
37 extern backlight_config_t backlight_config;
38#endif
39
40#if defined(USE_I2C) || defined(EH)
41# include "i2c.h"
42#else // USE_SERIAL
43# include "serial.h"
44#endif
45
46#ifndef DEBOUNCING_DELAY
47# define DEBOUNCING_DELAY 5
48#endif
49
50#if (DEBOUNCING_DELAY > 0)
51 static uint16_t debouncing_time;
52 static bool debouncing = false;
53#endif
54
55#if defined(USE_I2C) || defined(EH)
56
57#if (MATRIX_COLS <= 8)
58# define print_matrix_header() print("\nr/c 01234567\n")
59# define print_matrix_row(row) print_bin_reverse8(matrix_get_row(row))
60# define matrix_bitpop(i) bitpop(matrix[i])
61# define ROW_SHIFTER ((uint8_t)1)
62#else
63# error "Currently only supports 8 COLS"
64#endif
65
66#else // USE_SERIAL
67
68#if (MATRIX_COLS <= 8)
69# define print_matrix_header() print("\nr/c 01234567\n")
70# define print_matrix_row(row) print_bin_reverse8(matrix_get_row(row))
71# define matrix_bitpop(i) bitpop(matrix[i])
72# define ROW_SHIFTER ((uint8_t)1)
73#elif (MATRIX_COLS <= 16)
74# define print_matrix_header() print("\nr/c 0123456789ABCDEF\n")
75# define print_matrix_row(row) print_bin_reverse16(matrix_get_row(row))
76# define matrix_bitpop(i) bitpop16(matrix[i])
77# define ROW_SHIFTER ((uint16_t)1)
78#elif (MATRIX_COLS <= 32)
79# define print_matrix_header() print("\nr/c 0123456789ABCDEF0123456789ABCDEF\n")
80# define print_matrix_row(row) print_bin_reverse32(matrix_get_row(row))
81# define matrix_bitpop(i) bitpop32(matrix[i])
82# define ROW_SHIFTER ((uint32_t)1)
83#endif
84
85#endif
86static matrix_row_t matrix_debouncing[MATRIX_ROWS];
87
88#define ERROR_DISCONNECT_COUNT 5
89
90#define ROWS_PER_HAND (MATRIX_ROWS/2)
91
92static uint8_t error_count = 0;
93
94#if ((DIODE_DIRECTION == COL2ROW) || (DIODE_DIRECTION == ROW2COL))
95static uint8_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
96static uint8_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
97#elif (DIODE_DIRECTION == CUSTOM_MATRIX)
98static uint8_t row_col_pins[MATRIX_ROWS][MATRIX_COLS] = MATRIX_ROW_COL_PINS;
99#endif
100
101/* matrix state(1:on, 0:off) */
102static matrix_row_t matrix[MATRIX_ROWS];
103static matrix_row_t matrix_debouncing[MATRIX_ROWS];
104
105#if (DIODE_DIRECTION == COL2ROW)
106 static void init_cols(void);
107 static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row);
108 static void unselect_rows(void);
109 static void select_row(uint8_t row);
110 static void unselect_row(uint8_t row);
111#elif (DIODE_DIRECTION == ROW2COL)
112 static void init_rows(void);
113 static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col);
114 static void unselect_cols(void);
115 static void unselect_col(uint8_t col);
116 static void select_col(uint8_t col);
117#elif (DIODE_DIRECTION == CUSTOM_MATRIX)
118 static void init_cols_rows(void);
119 static bool read_cols(matrix_row_t current_matrix[], uint8_t current_row);
120#endif
121
122__attribute__ ((weak))
123void matrix_init_kb(void) {
124 matrix_init_user();
125}
126
127__attribute__ ((weak))
128void matrix_scan_kb(void) {
129 matrix_scan_user();
130}
131
132__attribute__ ((weak))
133void matrix_init_user(void) {
134}
135
136__attribute__ ((weak))
137void matrix_scan_user(void) {
138}
139
140__attribute__ ((weak))
141void matrix_slave_scan_user(void) {
142}
143
144inline
145uint8_t matrix_rows(void)
146{
147 return MATRIX_ROWS;
148}
149
150inline
151uint8_t matrix_cols(void)
152{
153 return MATRIX_COLS;
154}
155
156void matrix_init(void)
157{
158#ifdef DISABLE_JTAG
159 // JTAG disable for PORT F. write JTD bit twice within four cycles.
160 MCUCR |= (1<<JTD);
161 MCUCR |= (1<<JTD);
162#endif
163
164 debug_enable = true;
165 debug_matrix = true;
166 debug_mouse = true;
167
168 // Set pinout for right half if pinout for that half is defined
169 if (!isLeftHand) {
170#ifdef MATRIX_ROW_PINS_RIGHT
171 const uint8_t row_pins_right[MATRIX_ROWS] = MATRIX_ROW_PINS_RIGHT;
172 for (uint8_t i = 0; i < MATRIX_ROWS; i++)
173 row_pins[i] = row_pins_right[i];
174#endif
175#ifdef MATRIX_COL_PINS_RIGHT
176 const uint8_t col_pins_right[MATRIX_COLS] = MATRIX_COL_PINS_RIGHT;
177 for (uint8_t i = 0; i < MATRIX_COLS; i++)
178 col_pins[i] = col_pins_right[i];
179#endif
180 }
181
182 // initialize row and col
183#if (DIODE_DIRECTION == COL2ROW)
184 unselect_rows();
185 init_cols();
186#elif (DIODE_DIRECTION == ROW2COL)
187 unselect_cols();
188 init_rows();
189#elif (DIODE_DIRECTION == CUSTOM_MATRIX)
190 init_cols_rows();
191#endif
192
193 // initialize matrix state: all keys off
194 for (uint8_t i=0; i < MATRIX_ROWS; i++) {
195 matrix[i] = 0;
196 matrix_debouncing[i] = 0;
197 }
198
199 matrix_init_quantum();
200
201}
202
203uint8_t _matrix_scan(void)
204{
205 int offset = isLeftHand ? 0 : (ROWS_PER_HAND);
206#if (DIODE_DIRECTION == COL2ROW)
207 // Set row, read cols
208 for (uint8_t current_row = 0; current_row < ROWS_PER_HAND; current_row++) {
209# if (DEBOUNCING_DELAY > 0)
210 bool matrix_changed = read_cols_on_row(matrix_debouncing+offset, current_row);
211
212 if (matrix_changed) {
213 debouncing = true;
214 debouncing_time = timer_read();
215 }
216
217# else
218 read_cols_on_row(matrix+offset, current_row);
219# endif
220
221 }
222
223#elif (DIODE_DIRECTION == ROW2COL)
224 // Set col, read rows
225 for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
226# if (DEBOUNCING_DELAY > 0)
227 bool matrix_changed = read_rows_on_col(matrix_debouncing+offset, current_col);
228 if (matrix_changed) {
229 debouncing = true;
230 debouncing_time = timer_read();
231 }
232# else
233 read_rows_on_col(matrix+offset, current_col);
234# endif
235
236 }
237
238#elif (DIODE_DIRECTION == CUSTOM_MATRIX)
239 // Set row, read cols
240 for (uint8_t current_row = 0; current_row < ROWS_PER_HAND; current_row++) {
241# if (DEBOUNCING_DELAY > 0)
242 bool matrix_changed = read_cols(matrix_debouncing+offset, current_row);
243 if (matrix_changed) {
244 debouncing = true;
245 debouncing_time = timer_read();
246 }
247# else
248 read_cols(matrix+offset, current_row);
249# endif
250 }
251#endif
252
253# if (DEBOUNCING_DELAY > 0)
254 if (debouncing && (timer_elapsed(debouncing_time) > DEBOUNCING_DELAY)) {
255 for (uint8_t i = 0; i < ROWS_PER_HAND; i++) {
256 matrix[i+offset] = matrix_debouncing[i+offset];
257 }
258 debouncing = false;
259 }
260# endif
261
262 return 1;
263}
264
265#if defined(USE_I2C) || defined(EH)
266
267// Get rows from other half over i2c
268int i2c_transaction(void) {
269 int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
270 int err = 0;
271
272 // write backlight info
273 #ifdef BACKLIGHT_ENABLE
274 if (BACKLIT_DIRTY) {
275 err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_WRITE);
276 if (err) goto i2c_error;
277
278 // Backlight location
279 err = i2c_master_write(I2C_BACKLIT_START);
280 if (err) goto i2c_error;
281
282 // Write backlight
283 i2c_master_write(get_backlight_level());
284
285 BACKLIT_DIRTY = false;
286 }
287 #endif
288
289 err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_WRITE);
290 if (err) goto i2c_error;
291
292 // start of matrix stored at I2C_KEYMAP_START
293 err = i2c_master_write(I2C_KEYMAP_START);
294 if (err) goto i2c_error;
295
296 // Start read
297 err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_READ);
298 if (err) goto i2c_error;
299
300 if (!err) {
301 int i;
302 for (i = 0; i < ROWS_PER_HAND-1; ++i) {
303 matrix[slaveOffset+i] = i2c_master_read(I2C_ACK);
304 }
305 matrix[slaveOffset+i] = i2c_master_read(I2C_NACK);
306 i2c_master_stop();
307 } else {
308i2c_error: // the cable is disconnceted, or something else went wrong
309 i2c_reset_state();
310 return err;
311 }
312
313 #ifdef RGBLIGHT_ENABLE
314 if (RGB_DIRTY) {
315 err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_WRITE);
316 if (err) goto i2c_error;
317
318 // RGB Location
319 err = i2c_master_write(I2C_RGB_START);
320 if (err) goto i2c_error;
321
322 uint32_t dword = eeconfig_read_rgblight();
323
324 // Write RGB
325 err = i2c_master_write_data(&dword, 4);
326 if (err) goto i2c_error;
327
328 RGB_DIRTY = false;
329 i2c_master_stop();
330 }
331 #endif
332
333 return 0;
334}
335
336#else // USE_SERIAL
337
338
339typedef struct _Serial_s2m_buffer_t {
340 // TODO: if MATRIX_COLS > 8 change to uint8_t packed_matrix[] for pack/unpack
341 matrix_row_t smatrix[ROWS_PER_HAND];
342} Serial_s2m_buffer_t;
343
344volatile Serial_s2m_buffer_t serial_s2m_buffer = {};
345volatile Serial_m2s_buffer_t serial_m2s_buffer = {};
346uint8_t volatile status0 = 0;
347
348SSTD_t transactions[] = {
349 { (uint8_t *)&status0,
350 sizeof(serial_m2s_buffer), (uint8_t *)&serial_m2s_buffer,
351 sizeof(serial_s2m_buffer), (uint8_t *)&serial_s2m_buffer
352 }
353};
354
355void serial_master_init(void)
356{ soft_serial_initiator_init(transactions, TID_LIMIT(transactions)); }
357
358void serial_slave_init(void)
359{ soft_serial_target_init(transactions, TID_LIMIT(transactions)); }
360
361int serial_transaction(void) {
362 int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
363
364 if (soft_serial_transaction()) {
365 return 1;
366 }
367
368 // TODO: if MATRIX_COLS > 8 change to unpack()
369 for (int i = 0; i < ROWS_PER_HAND; ++i) {
370 matrix[slaveOffset+i] = serial_s2m_buffer.smatrix[i];
371 }
372
373 #ifdef RGBLIGHT_ENABLE
374 // Code to send RGB over serial goes here (not implemented yet)
375 #endif
376
377 #ifdef BACKLIGHT_ENABLE
378 // Write backlight level for slave to read
379 serial_m2s_buffer.backlight_level = backlight_config.enable ? backlight_config.level : 0;
380 #endif
381
382 return 0;
383}
384#endif
385
386uint8_t matrix_scan(void)
387{
388 uint8_t ret = _matrix_scan();
389
390#if defined(USE_I2C) || defined(EH)
391 if( i2c_transaction() ) {
392#else // USE_SERIAL
393 if( serial_transaction() ) {
394#endif
395
396 error_count++;
397
398 if (error_count > ERROR_DISCONNECT_COUNT) {
399 // reset other half if disconnected
400 int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
401 for (int i = 0; i < ROWS_PER_HAND; ++i) {
402 matrix[slaveOffset+i] = 0;
403 }
404 }
405 } else {
406 error_count = 0;
407 }
408 matrix_scan_quantum();
409 return ret;
410}
411
412void matrix_slave_scan(void) {
413 _matrix_scan();
414
415 int offset = (isLeftHand) ? 0 : ROWS_PER_HAND;
416
417#if defined(USE_I2C) || defined(EH)
418 for (int i = 0; i < ROWS_PER_HAND; ++i) {
419 i2c_slave_buffer[I2C_KEYMAP_START+i] = matrix[offset+i];
420 }
421#else // USE_SERIAL
422 // TODO: if MATRIX_COLS > 8 change to pack()
423 for (int i = 0; i < ROWS_PER_HAND; ++i) {
424 serial_s2m_buffer.smatrix[i] = matrix[offset+i];
425 }
426#endif
427 matrix_slave_scan_user();
428}
429
430bool matrix_is_modified(void)
431{
432 if (debouncing) return false;
433 return true;
434}
435
436inline
437bool matrix_is_on(uint8_t row, uint8_t col)
438{
439 return (matrix[row] & ((matrix_row_t)1<<col));
440}
441
442inline
443matrix_row_t matrix_get_row(uint8_t row)
444{
445 return matrix[row];
446}
447
448void matrix_print(void)
449{
450 print("\nr/c 0123456789ABCDEF\n");
451 for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
452 phex(row); print(": ");
453 pbin_reverse16(matrix_get_row(row));
454 print("\n");
455 }
456}
457
458uint8_t matrix_key_count(void)
459{
460 uint8_t count = 0;
461 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
462 count += bitpop16(matrix[i]);
463 }
464 return count;
465}
466
467#if (DIODE_DIRECTION == COL2ROW)
468
469static void init_cols(void)
470{
471 for(uint8_t x = 0; x < MATRIX_COLS; x++) {
472 uint8_t pin = col_pins[x];
473 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
474 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
475 }
476}
477
478static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row)
479{
480 // Store last value of row prior to reading
481 matrix_row_t last_row_value = current_matrix[current_row];
482
483 // Clear data in matrix row
484 current_matrix[current_row] = 0;
485
486 // Select row and wait for row selecton to stabilize
487 select_row(current_row);
488 wait_us(30);
489
490 // For each col...
491 for(uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
492
493 // Select the col pin to read (active low)
494 uint8_t pin = col_pins[col_index];
495 uint8_t pin_state = (_SFR_IO8(pin >> 4) & _BV(pin & 0xF));
496
497 // Populate the matrix row with the state of the col pin
498 current_matrix[current_row] |= pin_state ? 0 : (ROW_SHIFTER << col_index);
499 }
500
501 // Unselect row
502 unselect_row(current_row);
503
504 return (last_row_value != current_matrix[current_row]);
505}
506
507static void select_row(uint8_t row)
508{
509 uint8_t pin = row_pins[row];
510 _SFR_IO8((pin >> 4) + 1) |= _BV(pin & 0xF); // OUT
511 _SFR_IO8((pin >> 4) + 2) &= ~_BV(pin & 0xF); // LOW
512}
513
514static void unselect_row(uint8_t row)
515{
516 uint8_t pin = row_pins[row];
517 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
518 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
519}
520
521static void unselect_rows(void)
522{
523 for(uint8_t x = 0; x < ROWS_PER_HAND; x++) {
524 uint8_t pin = row_pins[x];
525 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
526 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
527 }
528}
529
530#elif (DIODE_DIRECTION == ROW2COL)
531
532static void init_rows(void)
533{
534 for(uint8_t x = 0; x < ROWS_PER_HAND; x++) {
535 uint8_t pin = row_pins[x];
536 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
537 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
538 }
539}
540
541static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col)
542{
543 bool matrix_changed = false;
544
545 // Select col and wait for col selecton to stabilize
546 select_col(current_col);
547 wait_us(30);
548
549 // For each row...
550 for(uint8_t row_index = 0; row_index < ROWS_PER_HAND; row_index++)
551 {
552
553 // Store last value of row prior to reading
554 matrix_row_t last_row_value = current_matrix[row_index];
555
556 // Check row pin state
557 if ((_SFR_IO8(row_pins[row_index] >> 4) & _BV(row_pins[row_index] & 0xF)) == 0)
558 {
559 // Pin LO, set col bit
560 current_matrix[row_index] |= (ROW_SHIFTER << current_col);
561 }
562 else
563 {
564 // Pin HI, clear col bit
565 current_matrix[row_index] &= ~(ROW_SHIFTER << current_col);
566 }
567
568 // Determine if the matrix changed state
569 if ((last_row_value != current_matrix[row_index]) && !(matrix_changed))
570 {
571 matrix_changed = true;
572 }
573 }
574
575 // Unselect col
576 unselect_col(current_col);
577
578 return matrix_changed;
579}
580
581static void select_col(uint8_t col)
582{
583 uint8_t pin = col_pins[col];
584 _SFR_IO8((pin >> 4) + 1) |= _BV(pin & 0xF); // OUT
585 _SFR_IO8((pin >> 4) + 2) &= ~_BV(pin & 0xF); // LOW
586}
587
588static void unselect_col(uint8_t col)
589{
590 uint8_t pin = col_pins[col];
591 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
592 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
593}
594
595static void unselect_cols(void)
596{
597 for(uint8_t x = 0; x < MATRIX_COLS; x++) {
598 uint8_t pin = col_pins[x];
599 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
600 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
601 }
602}
603
604#elif (DIODE_DIRECTION == CUSTOM_MATRIX)
605
606static void init_cols_rows(void)
607{
608 for(int row = 0; row < MATRIX_ROWS; row++) {
609 for(int col = 0; col < MATRIX_COLS; col++) {
610 uint8_t pin = row_col_pins[row][col];
611 if(pin == NO_PIN) {
612 continue;
613 }
614 // DDxn set 0 for input
615 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF);
616 // PORTxn set 1 for input/pullup
617 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF);
618 }
619 }
620}
621
622static bool read_cols(matrix_row_t current_matrix[], uint8_t current_row)
623{
624 matrix_row_t last_row_value = current_matrix[current_row];
625 current_matrix[current_row] = 0;
626
627 for(uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
628 uint8_t pin = row_col_pins[current_row][col_index];
629 if(pin == NO_PIN) {
630 current_matrix[current_row] |= 0;
631 }
632 else {
633 uint8_t pin_state = (_SFR_IO8(pin >> 4) & _BV(pin & 0xF));
634 current_matrix[current_row] |= pin_state ? 0 : (ROW_SHIFTER << col_index);
635 }
636 }
637
638 return (last_row_value != current_matrix[current_row]);
639}
640
641#endif
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