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-rw-r--r--keyboards/evyd13/wasdat_code/matrix.c369
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diff --git a/keyboards/evyd13/wasdat_code/matrix.c b/keyboards/evyd13/wasdat_code/matrix.c
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1/*
2Copyright 2012-2018 Jun Wako, Jack Humbert, Yiancar
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#include <stdint.h>
18#include <stdbool.h>
19#include "wait.h"
20#include "util.h"
21#include "matrix.h"
22#include "debounce.h"
23#include "quantum.h"
24
25#ifdef DIRECT_PINS
26static pin_t direct_pins[MATRIX_ROWS][MATRIX_COLS] = DIRECT_PINS;
27#elif (DIODE_DIRECTION == ROW2COL) || (DIODE_DIRECTION == COL2ROW)
28static const pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
29//static const pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
30#endif
31
32// matrix code
33
34#ifdef DIRECT_PINS
35
36static void init_pins(void) {
37 for (int row = 0; row < MATRIX_ROWS; row++) {
38 for (int col = 0; col < MATRIX_COLS; col++) {
39 pin_t pin = direct_pins[row][col];
40 if (pin != NO_PIN) {
41 setPinInputHigh(pin);
42 }
43 }
44 }
45}
46
47static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
48 matrix_row_t last_row_value = current_matrix[current_row];
49 current_matrix[current_row] = 0;
50
51 for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
52 pin_t pin = direct_pins[current_row][col_index];
53 if (pin != NO_PIN) {
54 current_matrix[current_row] |= readPin(pin) ? 0 : (MATRIX_ROW_SHIFTER << col_index);
55 }
56 }
57
58 return (last_row_value != current_matrix[current_row]);
59}
60
61#elif (DIODE_DIRECTION == COL2ROW)
62
63static void select_row(uint8_t row) {
64 setPinOutput(row_pins[row]);
65 writePinLow(row_pins[row]);
66}
67
68static void unselect_row(uint8_t row) { setPinInputHigh(row_pins[row]); }
69
70static void unselect_rows(void) {
71 for (uint8_t x = 0; x < MATRIX_ROWS; x++) {
72 setPinInputHigh(row_pins[x]);
73 }
74}
75
76static void init_pins(void) {
77 unselect_rows();
78 for (uint8_t x = 0; x < MATRIX_COLS; x++) {
79 setPinInputHigh(col_pins[x]);
80 }
81}
82
83static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
84 // Store last value of row prior to reading
85 matrix_row_t last_row_value = current_matrix[current_row];
86
87 // Clear data in matrix row
88 current_matrix[current_row] = 0;
89
90 // Select row and wait for row selecton to stabilize
91 select_row(current_row);
92 wait_us(30);
93
94 // For each col...
95 for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
96
97 // Select the col pin to read (active low)
98 uint8_t pin_state = readPin(col_pins[col_index]);
99
100 // Populate the matrix row with the state of the col pin
101 current_matrix[current_row] |= pin_state ? 0 : (MATRIX_ROW_SHIFTER << col_index);
102 }
103
104 // Unselect row
105 unselect_row(current_row);
106
107 return (last_row_value != current_matrix[current_row]);
108}
109
110#elif (DIODE_DIRECTION == ROW2COL)
111
112/* Cols 0 - 15
113 * col 0: F7
114 * col 1: F5
115 * col 2: F6
116 * col 3: F1
117 * col 4: F4
118 * col 5: F0
119 * These columns use a 74HC237D 3 to 8 bit demultiplexer. D4 is the enable pin, must be set high to use it.
120 * A0 A1 A2
121 * col / pin: PD2 PD1 PD0
122 * 6: 1 1 1
123 * col 7: D3
124 * col 8: B7
125 * 9: 0 1 1
126 * 10: 1 0 1
127 * 11: 0 0 1
128 * 12: 1 1 0
129 * 13: 0 1 0
130 * 14: 1 0 0
131 * 15: 0 0 0
132 */
133static void select_col(uint8_t col) {
134 switch (col) {
135 case 0:
136 writePinLow(F7);
137 break;
138 case 1:
139 writePinLow(F5);
140 break;
141 case 2:
142 writePinLow(F6);
143 break;
144 case 3:
145 writePinLow(F1);
146 break;
147 case 4:
148 writePinLow(F4);
149 break;
150 case 5:
151 writePinLow(F0);
152 break;
153 case 6:
154 writePinHigh(D4);
155 writePinHigh(D2);
156 writePinHigh(D1);
157 writePinHigh(D0);
158 break;
159 case 7:
160 writePinLow(D5);
161 break;
162 case 8:
163 writePinLow(D3);
164 break;
165 case 9:
166 writePinHigh(D4);
167 writePinHigh(D1);
168 writePinHigh(D0);
169 break;
170 case 10:
171 writePinHigh(D4);
172 writePinHigh(D2);
173 writePinHigh(D0);
174 break;
175 case 11:
176 writePinHigh(D4);
177 writePinHigh(D0);
178 break;
179 case 12:
180 writePinHigh(D4);
181 writePinHigh(D2);
182 writePinHigh(D1);
183 break;
184 case 13:
185 writePinHigh(D4);
186 writePinHigh(D1);
187 break;
188 case 14:
189 writePinHigh(D4);
190 writePinHigh(D2);
191 break;
192 case 15:
193 writePinHigh(D4);
194 break;
195 }
196}
197
198static void unselect_col(uint8_t col) {
199 switch (col) {
200 case 0:
201 writePinHigh(F7);
202 break;
203 case 1:
204 writePinHigh(F5);
205 break;
206 case 2:
207 writePinHigh(F6);
208 break;
209 case 3:
210 writePinHigh(F1);
211 break;
212 case 4:
213 writePinHigh(F4);
214 break;
215 case 5:
216 writePinHigh(F0);
217 break;
218 case 6:
219 writePinLow(D4);
220 writePinLow(D2);
221 writePinLow(D1);
222 writePinLow(D0);
223 break;
224 case 7:
225 writePinHigh(D5);
226 break;
227 case 8:
228 writePinHigh(D3);
229 break;
230 case 9:
231 writePinLow(D4);
232 writePinLow(D2);
233 writePinLow(D1);
234 writePinLow(D0);
235 break;
236 case 10:
237 writePinLow(D4);
238 writePinLow(D2);
239 writePinLow(D1);
240 writePinLow(D0);
241 break;
242 case 11:
243 writePinLow(D4);
244 writePinLow(D2);
245 writePinLow(D1);
246 writePinLow(D0);
247 break;
248 case 12:
249 writePinLow(D4);
250 writePinLow(D2);
251 writePinLow(D1);
252 writePinLow(D0);
253 break;
254 case 13:
255 writePinLow(D4);
256 writePinLow(D2);
257 writePinLow(D1);
258 writePinLow(D0);
259 break;
260 case 14:
261 writePinLow(D4);
262 writePinLow(D2);
263 writePinLow(D1);
264 writePinLow(D0);
265 break;
266 case 15:
267 writePinLow(D4);
268 writePinLow(D2);
269 writePinLow(D1);
270 writePinLow(D0);
271 break;
272 }
273}
274
275static void unselect_cols(void) {
276 //Native
277 writePinHigh(F7);
278 writePinHigh(F5);
279 writePinHigh(F6);
280 writePinHigh(F1);
281 writePinHigh(F4);
282 writePinHigh(F0);
283 writePinHigh(D3);
284 writePinHigh(D5);
285
286 //Demultiplexer
287 writePinLow(D4);
288 writePinLow(D2);
289 writePinLow(D1);
290 writePinLow(D0);
291}
292
293static void init_pins(void) {
294 unselect_cols();
295 for (uint8_t x = 0; x < MATRIX_ROWS; x++) {
296 setPinInputHigh(row_pins[x]);
297 }
298 setPinOutput(D0);
299 setPinOutput(D1);
300 setPinOutput(D2);
301 setPinOutput(D3);
302 setPinOutput(F7);
303 setPinOutput(F5);
304 setPinOutput(F6);
305 setPinOutput(F1);
306 setPinOutput(F4);
307 setPinOutput(F0);
308 setPinOutput(D3);
309 setPinOutput(D5);
310 setPinOutput(D4);
311}
312
313static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col) {
314 bool matrix_changed = false;
315
316 // Select col and wait for col selecton to stabilize
317 select_col(current_col);
318 wait_us(30);
319
320 // For each row...
321 for (uint8_t row_index = 0; row_index < MATRIX_ROWS; row_index++) {
322 // Store last value of row prior to reading
323 matrix_row_t last_row_value = current_matrix[row_index];
324
325 // Check row pin state
326 if (readPin(row_pins[row_index]) == 0) {
327 // Pin LO, set col bit
328 current_matrix[row_index] |= (MATRIX_ROW_SHIFTER << current_col);
329 } else {
330 // Pin HI, clear col bit
331 current_matrix[row_index] &= ~(MATRIX_ROW_SHIFTER << current_col);
332 }
333
334 // Determine if the matrix changed state
335 if ((last_row_value != current_matrix[row_index]) && !(matrix_changed)) {
336 matrix_changed = true;
337 }
338 }
339
340 // Unselect col
341 unselect_col(current_col);
342
343 return matrix_changed;
344}
345
346#endif
347
348void matrix_init_custom(void) {
349 // initialize key pins
350 init_pins();
351}
352
353bool matrix_scan_custom(matrix_row_t current_matrix[]) {
354 bool changed = false;
355
356#if defined(DIRECT_PINS) || (DIODE_DIRECTION == COL2ROW)
357 // Set row, read cols
358 for (uint8_t current_row = 0; current_row < MATRIX_ROWS; current_row++) {
359 changed |= read_cols_on_row(current_matrix, current_row);
360 }
361#elif (DIODE_DIRECTION == ROW2COL)
362 // Set col, read rows
363 for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
364 changed |= read_rows_on_col(current_matrix, current_col);
365 }
366#endif
367
368 return changed;
369}
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