2 Copyright 2012 Jun Wako <wakojun@gmail.com>
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>.
26 #include "split_util.h"
30 #include "transport.h"
32 #if (MATRIX_COLS <= 8)
33 # define print_matrix_header() print("\nr/c 01234567\n")
34 # define print_matrix_row(row) print_bin_reverse8(matrix_get_row(row))
35 # define matrix_bitpop(i) bitpop(matrix[i])
36 # define ROW_SHIFTER ((uint8_t)1)
37 #elif (MATRIX_COLS <= 16)
38 # define print_matrix_header() print("\nr/c 0123456789ABCDEF\n")
39 # define print_matrix_row(row) print_bin_reverse16(matrix_get_row(row))
40 # define matrix_bitpop(i) bitpop16(matrix[i])
41 # define ROW_SHIFTER ((uint16_t)1)
42 #elif (MATRIX_COLS <= 32)
43 # define print_matrix_header() print("\nr/c 0123456789ABCDEF0123456789ABCDEF\n")
44 # define print_matrix_row(row) print_bin_reverse32(matrix_get_row(row))
45 # define matrix_bitpop(i) bitpop32(matrix[i])
46 # define ROW_SHIFTER ((uint32_t)1)
49 #define ERROR_DISCONNECT_COUNT 5
51 #define ROWS_PER_HAND (MATRIX_ROWS / 2)
54 static pin_t direct_pins[MATRIX_ROWS][MATRIX_COLS] = DIRECT_PINS;
56 static pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
57 static pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
60 /* matrix state(1:on, 0:off) */
61 static matrix_row_t matrix[MATRIX_ROWS];
62 static matrix_row_t raw_matrix[ROWS_PER_HAND];
64 // row offsets for each hand
65 uint8_t thisHand, thatHand;
67 // user-defined overridable functions
69 __attribute__((weak)) void matrix_init_kb(void) { matrix_init_user(); }
71 __attribute__((weak)) void matrix_scan_kb(void) { matrix_scan_user(); }
73 __attribute__((weak)) void matrix_init_user(void) {}
75 __attribute__((weak)) void matrix_scan_user(void) {}
77 __attribute__((weak)) void matrix_slave_scan_user(void) {}
81 inline uint8_t matrix_rows(void) { return MATRIX_ROWS; }
83 inline uint8_t matrix_cols(void) { return MATRIX_COLS; }
85 bool matrix_is_modified(void) {
86 if (debounce_active()) return false;
90 inline bool matrix_is_on(uint8_t row, uint8_t col) { return (matrix[row] & ((matrix_row_t)1 << col)); }
92 inline matrix_row_t matrix_get_row(uint8_t row) { return matrix[row]; }
94 void matrix_print(void) {
95 print_matrix_header();
97 for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
100 print_matrix_row(row);
105 uint8_t matrix_key_count(void) {
107 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
108 count += matrix_bitpop(i);
117 static void init_pins(void) {
118 for (int row = 0; row < MATRIX_ROWS; row++) {
119 for (int col = 0; col < MATRIX_COLS; col++) {
120 pin_t pin = direct_pins[row][col];
122 setPinInputHigh(pin);
128 static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
129 matrix_row_t last_row_value = current_matrix[current_row];
130 current_matrix[current_row] = 0;
132 for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
133 pin_t pin = direct_pins[current_row][col_index];
135 current_matrix[current_row] |= readPin(pin) ? 0 : (ROW_SHIFTER << col_index);
139 return (last_row_value != current_matrix[current_row]);
142 #elif (DIODE_DIRECTION == COL2ROW)
144 static void select_row(uint8_t row) {
145 setPinOutput(row_pins[row]);
146 writePinLow(row_pins[row]);
149 static void unselect_row(uint8_t row) { setPinInputHigh(row_pins[row]); }
151 static void unselect_rows(void) {
152 for (uint8_t x = 0; x < ROWS_PER_HAND; x++) {
153 setPinInputHigh(row_pins[x]);
157 static void init_pins(void) {
159 for (uint8_t x = 0; x < MATRIX_COLS; x++) {
160 setPinInputHigh(col_pins[x]);
164 static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
165 // Store last value of row prior to reading
166 matrix_row_t last_row_value = current_matrix[current_row];
168 // Clear data in matrix row
169 current_matrix[current_row] = 0;
171 // Select row and wait for row selecton to stabilize
172 select_row(current_row);
176 for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
177 // Populate the matrix row with the state of the col pin
178 current_matrix[current_row] |= readPin(col_pins[col_index]) ? 0 : (ROW_SHIFTER << col_index);
182 unselect_row(current_row);
184 return (last_row_value != current_matrix[current_row]);
187 #elif (DIODE_DIRECTION == ROW2COL)
189 static void select_col(uint8_t col) {
190 setPinOutput(col_pins[col]);
191 writePinLow(col_pins[col]);
194 static void unselect_col(uint8_t col) { setPinInputHigh(col_pins[col]); }
196 static void unselect_cols(void) {
197 for (uint8_t x = 0; x < MATRIX_COLS; x++) {
198 setPinInputHigh(col_pins[x]);
202 static void init_pins(void) {
204 for (uint8_t x = 0; x < ROWS_PER_HAND; x++) {
205 setPinInputHigh(row_pins[x]);
209 static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col) {
210 bool matrix_changed = false;
212 // Select col and wait for col selecton to stabilize
213 select_col(current_col);
217 for (uint8_t row_index = 0; row_index < ROWS_PER_HAND; row_index++) {
218 // Store last value of row prior to reading
219 matrix_row_t last_row_value = current_matrix[row_index];
221 // Check row pin state
222 if (readPin(row_pins[row_index])) {
223 // Pin HI, clear col bit
224 current_matrix[row_index] &= ~(ROW_SHIFTER << current_col);
226 // Pin LO, set col bit
227 current_matrix[row_index] |= (ROW_SHIFTER << current_col);
230 // Determine if the matrix changed state
231 if ((last_row_value != current_matrix[row_index]) && !(matrix_changed)) {
232 matrix_changed = true;
237 unselect_col(current_col);
239 return matrix_changed;
244 void matrix_init(void) {
249 // Set pinout for right half if pinout for that half is defined
251 #ifdef MATRIX_ROW_PINS_RIGHT
252 const uint8_t row_pins_right[MATRIX_ROWS] = MATRIX_ROW_PINS_RIGHT;
253 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
254 row_pins[i] = row_pins_right[i];
257 #ifdef MATRIX_COL_PINS_RIGHT
258 const uint8_t col_pins_right[MATRIX_COLS] = MATRIX_COL_PINS_RIGHT;
259 for (uint8_t i = 0; i < MATRIX_COLS; i++) {
260 col_pins[i] = col_pins_right[i];
265 thisHand = isLeftHand ? 0 : (ROWS_PER_HAND);
266 thatHand = ROWS_PER_HAND - thisHand;
268 // initialize key pins
271 // initialize matrix state: all keys off
272 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
276 debounce_init(ROWS_PER_HAND);
278 matrix_init_quantum();
281 uint8_t _matrix_scan(void) {
282 bool changed = false;
284 #if defined(DIRECT_PINS) || (DIODE_DIRECTION == COL2ROW)
285 // Set row, read cols
286 for (uint8_t current_row = 0; current_row < ROWS_PER_HAND; current_row++) {
287 changed |= read_cols_on_row(raw_matrix, current_row);
289 #elif (DIODE_DIRECTION == ROW2COL)
290 // Set col, read rows
291 for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
292 changed |= read_rows_on_col(raw_matrix, current_col);
296 debounce(raw_matrix, matrix + thisHand, ROWS_PER_HAND, changed);
301 uint8_t matrix_scan(void) {
302 uint8_t ret = _matrix_scan();
304 if (is_keyboard_master()) {
305 static uint8_t error_count;
307 if (!transport_master(matrix + thatHand)) {
310 if (error_count > ERROR_DISCONNECT_COUNT) {
311 // reset other half if disconnected
312 for (int i = 0; i < ROWS_PER_HAND; ++i) {
313 matrix[thatHand + i] = 0;
320 matrix_scan_quantum();
322 transport_slave(matrix + thisHand);
323 matrix_slave_scan_user();