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-rw-r--r--keyboards/vitamins_included/matrix.c503
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diff --git a/keyboards/vitamins_included/matrix.c b/keyboards/vitamins_included/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 <avr/interrupt.h>
25#include <util/delay.h>
26#include "wait.h"
27#include "print.h"
28#include "debug.h"
29#include "util.h"
30#include "matrix.h"
31#include "split_util.h"
32#include "pro_micro.h"
33#include "config.h"
34#include "timer.h"
35#include <print.h>
36
37#if (defined(RGB_MIDI) | defined(RGBLIGHT_ANIMATIONS)) & defined(RGBLIGHT_ENABLE)
38 #include "rgblight.h"
39#endif
40
41
42#ifdef USE_I2C
43# include "i2c.h"
44#else // USE_SERIAL
45# include "serial.h"
46#endif
47
48#ifndef DEBOUNCE
49# define DEBOUNCE 5
50#endif
51
52#if (DEBOUNCE > 0)
53 static uint16_t debouncing_time;
54 static bool debouncing = false;
55#endif
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
65static matrix_row_t matrix_debouncing[MATRIX_ROWS];
66
67#define ERROR_DISCONNECT_COUNT 5
68
69#define ROWS_PER_HAND (MATRIX_ROWS/2)
70
71static uint8_t error_count = 0;
72
73static const uint8_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
74static const uint8_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
75
76/* matrix state(1:on, 0:off) */
77static matrix_row_t matrix[MATRIX_ROWS];
78static matrix_row_t matrix_debouncing[MATRIX_ROWS];
79
80#if (DIODE_DIRECTION == COL2ROW)
81 static void init_cols(void);
82 static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row);
83 static void unselect_rows(void);
84 static void select_row(uint8_t row);
85 static void unselect_row(uint8_t row);
86#elif (DIODE_DIRECTION == ROW2COL)
87 static void init_rows(void);
88 static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col);
89 static void unselect_cols(void);
90 static void unselect_col(uint8_t col);
91 static void select_col(uint8_t col);
92#endif
93
94
95__attribute__ ((weak))
96void matrix_init_quantum(void) {
97 matrix_init_kb();
98}
99
100__attribute__ ((weak))
101void matrix_scan_quantum(void) {
102 matrix_scan_kb();
103}
104
105__attribute__ ((weak))
106void matrix_init_kb(void) {
107 matrix_init_user();
108}
109
110__attribute__ ((weak))
111void matrix_scan_kb(void) {
112 matrix_scan_user();
113}
114
115__attribute__ ((weak))
116void matrix_init_user(void) {
117}
118
119__attribute__ ((weak))
120void matrix_scan_user(void) {
121}
122
123inline
124uint8_t matrix_rows(void) {
125 return MATRIX_ROWS;
126}
127
128inline
129uint8_t matrix_cols(void) {
130 return MATRIX_COLS;
131}
132
133bool has_usb(void) {
134 return UDADDR & _BV(ADDEN); // This will return true if a USB connection has been established
135}
136
137void matrix_init(void)
138{
139 // initialize row and col
140#if (DIODE_DIRECTION == COL2ROW)
141 unselect_rows();
142 init_cols();
143#elif (DIODE_DIRECTION == ROW2COL)
144 unselect_cols();
145 init_rows();
146#endif
147
148 TX_RX_LED_INIT;
149
150 // initialize matrix state: all keys off
151 for (uint8_t i=0; i < MATRIX_ROWS; i++) {
152 matrix[i] = 0;
153 matrix_debouncing[i] = 0;
154 }
155
156 #ifdef RGBLIGHT_ENABLE
157 rgblight_init();
158 #endif
159
160 timer_init();
161 #ifdef USE_I2C
162 i2c_slave_init(SLAVE_I2C_ADDRESS);
163 #else
164 serial_slave_init();
165 #endif
166
167 sei();
168
169 matrix_init_quantum();
170 while(!has_usb() || contacted_by_master){
171 matrix_slave_scan();
172 }
173
174 // Set up as master
175 #ifdef USE_I2C
176 i2c_reset_state();
177 i2c_master_init();
178 #else
179 serial_master_init();
180 #endif
181}
182
183uint8_t _matrix_scan(void)
184{
185 int offset = isLeftHand ? 0 : (ROWS_PER_HAND);
186#if (DIODE_DIRECTION == COL2ROW)
187 // Set row, read cols
188 for (uint8_t current_row = 0; current_row < ROWS_PER_HAND; current_row++) {
189# if (DEBOUNCE > 0)
190 bool matrix_changed = read_cols_on_row(matrix_debouncing+offset, current_row);
191
192 if (matrix_changed) {
193 debouncing = true;
194 debouncing_time = timer_read();
195 }
196
197# else
198 read_cols_on_row(matrix+offset, current_row);
199# endif
200
201 }
202
203#elif (DIODE_DIRECTION == ROW2COL)
204 // Set col, read rows
205 for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
206# if (DEBOUNCE > 0)
207 bool matrix_changed = read_rows_on_col(matrix_debouncing+offset, current_col);
208 if (matrix_changed) {
209 debouncing = true;
210 debouncing_time = timer_read();
211 }
212# else
213 read_rows_on_col(matrix+offset, current_col);
214# endif
215
216 }
217#endif
218
219# if (DEBOUNCE > 0)
220 if (debouncing && (timer_elapsed(debouncing_time) > DEBOUNCE)) {
221 for (uint8_t i = 0; i < ROWS_PER_HAND; i++) {
222 matrix[i+offset] = matrix_debouncing[i+offset];
223 }
224 debouncing = false;
225 }
226# endif
227
228 return 1;
229}
230
231#ifdef USE_I2C
232
233// Get rows from other half over i2c
234int i2c_transaction(void) {
235 int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
236
237 int err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_WRITE);
238 if (err) goto i2c_error;
239
240 // start of matrix stored at 0x00
241 err = i2c_master_write(0x00);
242 if (err) goto i2c_error;
243
244 // Start read
245 err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_READ);
246 if (err) goto i2c_error;
247
248 if (!err) {
249 int i;
250 for (i = 0; i < ROWS_PER_HAND-1; ++i) {
251 matrix[slaveOffset+i] = i2c_master_read(I2C_ACK);
252 }
253 matrix[slaveOffset+i] = i2c_master_read(I2C_NACK);
254 i2c_master_stop();
255 } else {
256i2c_error: // the cable is disconnceted, or something else went wrong
257 i2c_reset_state();
258 return err;
259 }
260
261 return 0;
262}
263
264#else // USE_SERIAL
265
266int serial_transaction(void) {
267 int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
268
269 if (serial_update_buffers()) {
270 return 1;
271 }
272
273 for (int i = 0; i < ROWS_PER_HAND; ++i) {
274 matrix[slaveOffset+i] = serial_slave_buffer[i];
275 }
276 return 0;
277}
278#endif
279
280uint8_t matrix_scan(void)
281{
282 uint8_t ret = _matrix_scan();
283
284#ifdef USE_I2C
285 if( i2c_transaction() ) {
286#else // USE_SERIAL
287 if( serial_transaction() ) {
288#endif
289 // turn on the indicator led when halves are disconnected
290 TXLED1;
291
292 error_count++;
293
294 if (error_count > ERROR_DISCONNECT_COUNT) {
295 // reset other half if disconnected
296 int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
297 for (int i = 0; i < ROWS_PER_HAND; ++i) {
298 matrix[slaveOffset+i] = 0;
299 }
300 }
301 } else {
302 // turn off the indicator led on no error
303 TXLED0;
304 error_count = 0;
305 }
306 matrix_scan_quantum();
307 return ret;
308}
309
310void matrix_slave_scan(void) {
311 #if defined(RGBLIGHT_ANIMATIONS) & defined(RGBLIGHT_ENABLE)
312 rgblight_task();
313 #endif
314 _matrix_scan();
315
316 int offset = (isLeftHand) ? 0 : ROWS_PER_HAND;
317
318#ifdef USE_I2C
319 for (int i = 0; i < ROWS_PER_HAND; ++i) {
320 i2c_slave_buffer[i] = matrix[offset+i];
321 }
322#else // USE_SERIAL
323 for (int i = 0; i < ROWS_PER_HAND; ++i) {
324 serial_slave_buffer[i] = matrix[offset+i];
325 }
326#endif
327}
328
329bool matrix_is_modified(void)
330{
331 if (debouncing) return false;
332 return true;
333}
334
335inline
336bool matrix_is_on(uint8_t row, uint8_t col)
337{
338 return (matrix[row] & ((matrix_row_t)1<<col));
339}
340
341inline
342matrix_row_t matrix_get_row(uint8_t row)
343{
344 return matrix[row];
345}
346
347void matrix_print(void)
348{
349 print("\nr/c 0123456789ABCDEF\n");
350 for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
351 phex(row); print(": ");
352 pbin_reverse16(matrix_get_row(row));
353 print("\n");
354 }
355}
356
357uint8_t matrix_key_count(void)
358{
359 uint8_t count = 0;
360 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
361 count += bitpop16(matrix[i]);
362 }
363 return count;
364}
365
366#if (DIODE_DIRECTION == COL2ROW)
367
368static void init_cols(void)
369{
370 for(uint8_t x = 0; x < MATRIX_COLS; x++) {
371 uint8_t pin = col_pins[x];
372 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
373 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
374 }
375}
376
377static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row)
378{
379 // Store last value of row prior to reading
380 matrix_row_t last_row_value = current_matrix[current_row];
381
382 // Clear data in matrix row
383 current_matrix[current_row] = 0;
384
385 // Select row and wait for row selecton to stabilize
386 select_row(current_row);
387 wait_us(30);
388
389 // For each col...
390 for(uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
391
392 // Select the col pin to read (active low)
393 uint8_t pin = col_pins[col_index];
394 uint8_t pin_state = (_SFR_IO8(pin >> 4) & _BV(pin & 0xF));
395
396 // Populate the matrix row with the state of the col pin
397 current_matrix[current_row] |= pin_state ? 0 : (ROW_SHIFTER << col_index);
398 }
399
400 // Unselect row
401 unselect_row(current_row);
402
403 return (last_row_value != current_matrix[current_row]);
404}
405
406static void select_row(uint8_t row)
407{
408 uint8_t pin = row_pins[row];
409 _SFR_IO8((pin >> 4) + 1) |= _BV(pin & 0xF); // OUT
410 _SFR_IO8((pin >> 4) + 2) &= ~_BV(pin & 0xF); // LOW
411}
412
413static void unselect_row(uint8_t row)
414{
415 uint8_t pin = row_pins[row];
416 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
417 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
418}
419
420static void unselect_rows(void)
421{
422 for(uint8_t x = 0; x < ROWS_PER_HAND; x++) {
423 uint8_t pin = row_pins[x];
424 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
425 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
426 }
427}
428
429#elif (DIODE_DIRECTION == ROW2COL)
430
431static void init_rows(void)
432{
433 for(uint8_t x = 0; x < ROWS_PER_HAND; x++) {
434 uint8_t pin = row_pins[x];
435 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
436 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
437 }
438}
439
440static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col)
441{
442 bool matrix_changed = false;
443
444 // Select col and wait for col selecton to stabilize
445 select_col(current_col);
446 wait_us(30);
447
448 // For each row...
449 for(uint8_t row_index = 0; row_index < ROWS_PER_HAND; row_index++)
450 {
451
452 // Store last value of row prior to reading
453 matrix_row_t last_row_value = current_matrix[row_index];
454
455 // Check row pin state
456 if ((_SFR_IO8(row_pins[row_index] >> 4) & _BV(row_pins[row_index] & 0xF)) == 0)
457 {
458 // Pin LO, set col bit
459 current_matrix[row_index] |= (ROW_SHIFTER << current_col);
460 }
461 else
462 {
463 // Pin HI, clear col bit
464 current_matrix[row_index] &= ~(ROW_SHIFTER << current_col);
465 }
466
467 // Determine if the matrix changed state
468 if ((last_row_value != current_matrix[row_index]) && !(matrix_changed))
469 {
470 matrix_changed = true;
471 }
472 }
473
474 // Unselect col
475 unselect_col(current_col);
476
477 return matrix_changed;
478}
479
480static void select_col(uint8_t col)
481{
482 uint8_t pin = col_pins[col];
483 _SFR_IO8((pin >> 4) + 1) |= _BV(pin & 0xF); // OUT
484 _SFR_IO8((pin >> 4) + 2) &= ~_BV(pin & 0xF); // LOW
485}
486
487static void unselect_col(uint8_t col)
488{
489 uint8_t pin = col_pins[col];
490 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
491 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
492}
493
494static void unselect_cols(void)
495{
496 for(uint8_t x = 0; x < MATRIX_COLS; x++) {
497 uint8_t pin = col_pins[x];
498 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
499 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
500 }
501}
502
503#endif
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