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-rw-r--r--keyboards/helix/pico/matrix.c342
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diff --git a/keyboards/helix/pico/matrix.c b/keyboards/helix/pico/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 "quantum.h"
33
34#ifdef USE_MATRIX_I2C
35# include "i2c.h"
36#else // USE_SERIAL
37# include "serial.h"
38#endif
39
40#ifndef DEBOUNCE
41# define DEBOUNCE 5
42#endif
43
44#define ERROR_DISCONNECT_COUNT 5
45
46static uint8_t debouncing = DEBOUNCE;
47static const int ROWS_PER_HAND = MATRIX_ROWS/2;
48static uint8_t error_count = 0;
49
50static const uint8_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
51static const uint8_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
52
53/* matrix state(1:on, 0:off) */
54static matrix_row_t matrix[MATRIX_ROWS];
55static matrix_row_t matrix_debouncing[MATRIX_ROWS];
56
57static matrix_row_t read_cols(void);
58static void init_cols(void);
59static void unselect_rows(void);
60static void select_row(uint8_t row);
61static uint8_t matrix_master_scan(void);
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 split_keyboard_setup();
97
98 // initialize row and col
99 unselect_rows();
100 init_cols();
101
102 setPinOutput(B0);
103 setPinOutput(D5);
104 writePinHigh(B0);
105 writePinHigh(D5);
106
107 // initialize matrix state: all keys off
108 for (uint8_t i=0; i < MATRIX_ROWS; i++) {
109 matrix[i] = 0;
110 matrix_debouncing[i] = 0;
111 }
112
113 matrix_init_quantum();
114}
115
116uint8_t _matrix_scan(void)
117{
118 // Right hand is stored after the left in the matirx so, we need to offset it
119 int offset = isLeftHand ? 0 : (ROWS_PER_HAND);
120
121 for (uint8_t i = 0; i < ROWS_PER_HAND; i++) {
122 select_row(i);
123 _delay_us(30); // without this wait read unstable value.
124 matrix_row_t cols = read_cols();
125 if (matrix_debouncing[i+offset] != cols) {
126 matrix_debouncing[i+offset] = cols;
127 debouncing = DEBOUNCE;
128 }
129 unselect_rows();
130 }
131
132 if (debouncing) {
133 if (--debouncing) {
134 _delay_ms(1);
135 } else {
136 for (uint8_t i = 0; i < ROWS_PER_HAND; i++) {
137 matrix[i+offset] = matrix_debouncing[i+offset];
138 }
139 }
140 }
141
142 return 1;
143}
144
145#ifdef USE_MATRIX_I2C
146
147// Get rows from other half over i2c
148int i2c_transaction(void) {
149 int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
150
151 int err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_WRITE);
152 if (err) goto i2c_error;
153
154 // start of matrix stored at 0x00
155 err = i2c_master_write(0x00);
156 if (err) goto i2c_error;
157
158 // Start read
159 err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_READ);
160 if (err) goto i2c_error;
161
162 if (!err) {
163 int i;
164 for (i = 0; i < ROWS_PER_HAND-1; ++i) {
165 matrix[slaveOffset+i] = i2c_master_read(I2C_ACK);
166 }
167 matrix[slaveOffset+i] = i2c_master_read(I2C_NACK);
168 i2c_master_stop();
169 } else {
170i2c_error: // the cable is disconnceted, or something else went wrong
171 i2c_reset_state();
172 return err;
173 }
174
175 return 0;
176}
177
178#else // USE_SERIAL
179
180int serial_transaction(void) {
181 int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
182 int ret=serial_update_buffers();
183 if (ret ) {
184 if(ret==2) writePinLow(B0);
185 return 1;
186 }
187 writePinHigh(B0);
188 for (int i = 0; i < ROWS_PER_HAND; ++i) {
189 matrix[slaveOffset+i] = serial_slave_buffer[i];
190 }
191 return 0;
192}
193#endif
194
195uint8_t matrix_scan(void)
196{
197 if (is_helix_master()) {
198 matrix_master_scan();
199 }else{
200 matrix_slave_scan();
201
202 int offset = (isLeftHand) ? ROWS_PER_HAND : 0;
203
204 for (int i = 0; i < ROWS_PER_HAND; ++i) {
205 matrix[offset+i] = serial_master_buffer[i];
206 }
207
208 matrix_scan_quantum();
209 }
210 return 1;
211}
212
213
214uint8_t matrix_master_scan(void) {
215
216 int ret = _matrix_scan();
217
218#ifndef KEYBOARD_helix_rev1
219 int offset = (isLeftHand) ? 0 : ROWS_PER_HAND;
220
221#ifdef USE_MATRIX_I2C
222// for (int i = 0; i < ROWS_PER_HAND; ++i) {
223 /* i2c_slave_buffer[i] = matrix[offset+i]; */
224// i2c_slave_buffer[i] = matrix[offset+i];
225// }
226#else // USE_SERIAL
227 for (int i = 0; i < ROWS_PER_HAND; ++i) {
228 serial_master_buffer[i] = matrix[offset+i];
229 }
230#endif
231#endif
232
233#ifdef USE_MATRIX_I2C
234 if( i2c_transaction() ) {
235#else // USE_SERIAL
236 if( serial_transaction() ) {
237#endif
238 // turn on the indicator led when halves are disconnected
239 writePinLow(D5);
240
241 error_count++;
242
243 if (error_count > ERROR_DISCONNECT_COUNT) {
244 // reset other half if disconnected
245 int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
246 for (int i = 0; i < ROWS_PER_HAND; ++i) {
247 matrix[slaveOffset+i] = 0;
248 }
249 }
250 } else {
251 // turn off the indicator led on no error
252 writePinHigh(D5);
253 error_count = 0;
254 }
255 matrix_scan_quantum();
256 return ret;
257}
258
259void matrix_slave_scan(void) {
260 _matrix_scan();
261
262 int offset = (isLeftHand) ? 0 : ROWS_PER_HAND;
263
264#ifdef USE_MATRIX_I2C
265 for (int i = 0; i < ROWS_PER_HAND; ++i) {
266 /* i2c_slave_buffer[i] = matrix[offset+i]; */
267 i2c_slave_buffer[i] = matrix[offset+i];
268 }
269#else // USE_SERIAL
270 for (int i = 0; i < ROWS_PER_HAND; ++i) {
271 serial_slave_buffer[i] = matrix[offset+i];
272 }
273#endif
274}
275
276bool matrix_is_modified(void)
277{
278 if (debouncing) return false;
279 return true;
280}
281
282inline
283bool matrix_is_on(uint8_t row, uint8_t col)
284{
285 return (matrix[row] & ((matrix_row_t)1<<col));
286}
287
288inline
289matrix_row_t matrix_get_row(uint8_t row)
290{
291 return matrix[row];
292}
293
294void matrix_print(void)
295{
296 print("\nr/c 0123456789ABCDEF\n");
297 for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
298 print_hex8(row); print(": ");
299 print_bin_reverse16(matrix_get_row(row));
300 print("\n");
301 }
302}
303
304uint8_t matrix_key_count(void)
305{
306 uint8_t count = 0;
307 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
308 count += bitpop16(matrix[i]);
309 }
310 return count;
311}
312
313static void init_cols(void)
314{
315 for(int x = 0; x < MATRIX_COLS; x++) {
316 _SFR_IO8((col_pins[x] >> 4) + 1) &= ~_BV(col_pins[x] & 0xF);
317 _SFR_IO8((col_pins[x] >> 4) + 2) |= _BV(col_pins[x] & 0xF);
318 }
319}
320
321static matrix_row_t read_cols(void)
322{
323 matrix_row_t result = 0;
324 for(int x = 0; x < MATRIX_COLS; x++) {
325 result |= (_SFR_IO8(col_pins[x] >> 4) & _BV(col_pins[x] & 0xF)) ? 0 : (1 << x);
326 }
327 return result;
328}
329
330static void unselect_rows(void)
331{
332 for(int x = 0; x < ROWS_PER_HAND; x++) {
333 _SFR_IO8((row_pins[x] >> 4) + 1) &= ~_BV(row_pins[x] & 0xF);
334 _SFR_IO8((row_pins[x] >> 4) + 2) |= _BV(row_pins[x] & 0xF);
335 }
336}
337
338static void select_row(uint8_t row)
339{
340 _SFR_IO8((row_pins[row] >> 4) + 1) |= _BV(row_pins[row] & 0xF);
341 _SFR_IO8((row_pins[row] >> 4) + 2) &= ~_BV(row_pins[row] & 0xF);
342}