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diff --git a/keyboards/helix/rev1/matrix.c b/keyboards/helix/rev1/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/wdt.h>
25#include <avr/interrupt.h>
26#include <util/delay.h>
27#include "print.h"
28#include "debug.h"
29#include "util.h"
30#include "matrix.h"
31#include "split_util.h"
32#include "config.h"
33#include "quantum.h"
34
35#ifdef USE_MATRIX_I2C
36# include "i2c.h"
37#else // USE_SERIAL
38# include "serial.h"
39#endif
40
41#ifndef DEBOUNCE
42# define DEBOUNCE 5
43#endif
44
45#define ERROR_DISCONNECT_COUNT 5
46
47static uint8_t debouncing = DEBOUNCE;
48static const int ROWS_PER_HAND = MATRIX_ROWS/2;
49static uint8_t error_count = 0;
50
51static const uint8_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
52static const uint8_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
53
54/* matrix state(1:on, 0:off) */
55static matrix_row_t matrix[MATRIX_ROWS];
56static matrix_row_t matrix_debouncing[MATRIX_ROWS];
57
58static matrix_row_t read_cols(void);
59static void init_cols(void);
60static void unselect_rows(void);
61static void select_row(uint8_t row);
62
63
64__attribute__ ((weak))
65void matrix_init_kb(void) {
66 matrix_init_user();
67}
68
69__attribute__ ((weak))
70void matrix_scan_kb(void) {
71 matrix_scan_user();
72}
73
74__attribute__ ((weak))
75void matrix_init_user(void) {
76}
77
78__attribute__ ((weak))
79void matrix_scan_user(void) {
80}
81
82inline
83uint8_t matrix_rows(void)
84{
85 return MATRIX_ROWS;
86}
87
88inline
89uint8_t matrix_cols(void)
90{
91 return MATRIX_COLS;
92}
93
94void matrix_init(void)
95{
96 debug_enable = true;
97 debug_matrix = true;
98 debug_mouse = true;
99 // initialize row and col
100 unselect_rows();
101 init_cols();
102
103 setPinOutput(B0);
104 setPinOutput(D5);
105
106 // initialize matrix state: all keys off
107 for (uint8_t i=0; i < MATRIX_ROWS; i++) {
108 matrix[i] = 0;
109 matrix_debouncing[i] = 0;
110 }
111
112 matrix_init_quantum();
113}
114
115uint8_t _matrix_scan(void)
116{
117 // Right hand is stored after the left in the matirx so, we need to offset it
118 int offset = isLeftHand ? 0 : (ROWS_PER_HAND);
119
120 for (uint8_t i = 0; i < ROWS_PER_HAND; i++) {
121 select_row(i);
122 _delay_us(30); // without this wait read unstable value.
123 matrix_row_t cols = read_cols();
124 if (matrix_debouncing[i+offset] != cols) {
125 matrix_debouncing[i+offset] = cols;
126 debouncing = DEBOUNCE;
127 }
128 unselect_rows();
129 }
130
131 if (debouncing) {
132 if (--debouncing) {
133 _delay_ms(1);
134 } else {
135 for (uint8_t i = 0; i < ROWS_PER_HAND; i++) {
136 matrix[i+offset] = matrix_debouncing[i+offset];
137 }
138 }
139 }
140
141 return 1;
142}
143
144#ifdef USE_MATRIX_I2C
145
146// Get rows from other half over i2c
147int i2c_transaction(void) {
148 int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
149
150 int err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_WRITE);
151 if (err) goto i2c_error;
152
153 // start of matrix stored at 0x00
154 err = i2c_master_write(0x00);
155 if (err) goto i2c_error;
156
157 // Start read
158 err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_READ);
159 if (err) goto i2c_error;
160
161 if (!err) {
162 int i;
163 for (i = 0; i < ROWS_PER_HAND-1; ++i) {
164 matrix[slaveOffset+i] = i2c_master_read(I2C_ACK);
165 }
166 matrix[slaveOffset+i] = i2c_master_read(I2C_NACK);
167 i2c_master_stop();
168 } else {
169i2c_error: // the cable is disconnceted, or something else went wrong
170 i2c_reset_state();
171 return err;
172 }
173
174 return 0;
175}
176
177#else // USE_SERIAL
178
179int serial_transaction(void) {
180 int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
181
182 if (serial_update_buffers()) {
183 return 1;
184 }
185
186 for (int i = 0; i < ROWS_PER_HAND; ++i) {
187 matrix[slaveOffset+i] = serial_slave_buffer[i];
188 }
189 return 0;
190}
191#endif
192
193uint8_t matrix_scan(void)
194{
195 int ret = _matrix_scan();
196
197
198
199#ifdef USE_MATRIX_I2C
200 if( i2c_transaction() ) {
201#else // USE_SERIAL
202 if( serial_transaction() ) {
203#endif
204 // turn on the indicator led when halves are disconnected
205 writePinLow(D5);
206
207 error_count++;
208
209 if (error_count > ERROR_DISCONNECT_COUNT) {
210 // reset other half if disconnected
211 int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
212 for (int i = 0; i < ROWS_PER_HAND; ++i) {
213 matrix[slaveOffset+i] = 0;
214 }
215 }
216 } else {
217 // turn off the indicator led on no error
218 writePinHigh(D5);
219 error_count = 0;
220 }
221 matrix_scan_quantum();
222 return ret;
223}
224
225void matrix_slave_scan(void) {
226 _matrix_scan();
227
228 int offset = (isLeftHand) ? 0 : (MATRIX_ROWS / 2);
229
230#ifdef USE_MATRIX_I2C
231 for (int i = 0; i < ROWS_PER_HAND; ++i) {
232 /* i2c_slave_buffer[i] = matrix[offset+i]; */
233 i2c_slave_buffer[i] = matrix[offset+i];
234 }
235#else // USE_SERIAL
236 for (int i = 0; i < ROWS_PER_HAND; ++i) {
237 serial_slave_buffer[i] = matrix[offset+i];
238 }
239#endif
240}
241
242bool matrix_is_modified(void)
243{
244 if (debouncing) return false;
245 return true;
246}
247
248inline
249bool matrix_is_on(uint8_t row, uint8_t col)
250{
251 return (matrix[row] & ((matrix_row_t)1<<col));
252}
253
254inline
255matrix_row_t matrix_get_row(uint8_t row)
256{
257 return matrix[row];
258}
259
260void matrix_print(void)
261{
262 print("\nr/c 0123456789ABCDEF\n");
263 for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
264 print_hex8(row); print(": ");
265 print_bin_reverse16(matrix_get_row(row));
266 print("\n");
267 }
268}
269
270uint8_t matrix_key_count(void)
271{
272 uint8_t count = 0;
273 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
274 count += bitpop16(matrix[i]);
275 }
276 return count;
277}
278
279static void init_cols(void)
280{
281 for(int x = 0; x < MATRIX_COLS; x++) {
282 _SFR_IO8((col_pins[x] >> 4) + 1) &= ~_BV(col_pins[x] & 0xF);
283 _SFR_IO8((col_pins[x] >> 4) + 2) |= _BV(col_pins[x] & 0xF);
284 }
285}
286
287static matrix_row_t read_cols(void)
288{
289 matrix_row_t result = 0;
290 for(int x = 0; x < MATRIX_COLS; x++) {
291 result |= (_SFR_IO8(col_pins[x] >> 4) & _BV(col_pins[x] & 0xF)) ? 0 : (1 << x);
292 }
293 return result;
294}
295
296static void unselect_rows(void)
297{
298 for(int x = 0; x < ROWS_PER_HAND; x++) {
299 _SFR_IO8((row_pins[x] >> 4) + 1) &= ~_BV(row_pins[x] & 0xF);
300 _SFR_IO8((row_pins[x] >> 4) + 2) |= _BV(row_pins[x] & 0xF);
301 }
302}
303
304static void select_row(uint8_t row)
305{
306 _SFR_IO8((row_pins[row] >> 4) + 1) |= _BV(row_pins[row] & 0xF);
307 _SFR_IO8((row_pins[row] >> 4) + 2) &= ~_BV(row_pins[row] & 0xF);
308}