2 Copyright 2012 Jun Wako
3 Copyright 2014 Jack Humbert
4 Copyright 2017 Priyadi Iman Nurcahyo
6 This program is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
32 /* Set 0 if debouncing isn't needed */
39 static uint16_t debouncing_time;
40 static bool debouncing = false;
43 #if (MATRIX_COLS <= 8)
44 # define print_matrix_header() print("\nr/c 01234567\n")
45 # define print_matrix_row(row) print_bin_reverse8(matrix_get_row(row))
46 # define matrix_bitpop(i) bitpop(matrix[i])
47 # define ROW_SHIFTER ((uint8_t)1)
48 #elif (MATRIX_COLS <= 16)
49 # define print_matrix_header() print("\nr/c 0123456789ABCDEF\n")
50 # define print_matrix_row(row) print_bin_reverse16(matrix_get_row(row))
51 # define matrix_bitpop(i) bitpop16(matrix[i])
52 # define ROW_SHIFTER ((uint16_t)1)
53 #elif (MATRIX_COLS <= 32)
54 # define print_matrix_header() print("\nr/c 0123456789ABCDEF0123456789ABCDEF\n")
55 # define print_matrix_row(row) print_bin_reverse32(matrix_get_row(row))
56 # define matrix_bitpop(i) bitpop32(matrix[i])
57 # define ROW_SHIFTER ((uint32_t)1)
61 extern const matrix_row_t matrix_mask[];
64 static const uint8_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
65 static const uint8_t tp_pins[3] = TRACKPOINT_PINS;
67 /* matrix state(1:on, 0:off) */
68 static matrix_row_t matrix[MATRIX_ROWS];
69 static matrix_row_t matrix_debouncing[MATRIX_ROWS];
71 static void init_cols(void);
72 static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row);
73 static void unselect_rows(void);
74 static void select_row(uint8_t row);
75 static void unselect_row(uint8_t row);
78 __attribute__ ((weak))
79 void matrix_init_kb(void) {
83 __attribute__ ((weak))
84 void matrix_scan_kb(void) {
88 __attribute__ ((weak))
89 void matrix_init_user(void) {
92 __attribute__ ((weak))
93 void matrix_scan_user(void) {
97 uint8_t matrix_rows(void) {
102 uint8_t matrix_cols(void) {
106 void matrix_init(void) {
107 // initialize row and col
111 // initialize matrix state: all keys off
112 for (uint8_t i=0; i < MATRIX_ROWS; i++) {
114 matrix_debouncing[i] = 0;
117 matrix_init_quantum();
120 uint8_t matrix_scan(void)
122 // Set row, read cols
123 for (uint8_t current_row = 0; current_row < MATRIX_ROWS; current_row++) {
125 bool matrix_changed = read_cols_on_row(matrix_debouncing, current_row);
127 if (matrix_changed) {
129 debouncing_time = timer_read();
133 read_cols_on_row(matrix, current_row);
139 if (debouncing && (timer_elapsed(debouncing_time) > DEBOUNCE)) {
140 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
141 matrix[i] = matrix_debouncing[i];
147 matrix_scan_quantum();
151 bool matrix_is_modified(void)
154 if (debouncing) return false;
160 bool matrix_is_on(uint8_t row, uint8_t col)
163 return (matrix[row] & ((matrix_row_t)1<<col));
167 matrix_row_t matrix_get_row(uint8_t row)
169 // Matrix mask lets you disable switches in the returned matrix data. For example, if you have a
170 // switch blocker installed and the switch is always pressed.
172 return matrix[row] & matrix_mask[row];
178 void matrix_print(void)
180 print_matrix_header();
182 for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
183 phex(row); print(": ");
184 print_matrix_row(row);
189 uint8_t matrix_key_count(void)
192 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
193 count += matrix_bitpop(i);
199 #define ROW_MASK 0b11100000
201 static const uint8_t row_bit[MATRIX_ROWS] = {
213 static void init_cols(void)
216 for(uint8_t x = 0; x < MATRIX_COLS; x++) {
217 uint8_t pin = col_pins[x];
218 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
219 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
227 for(uint8_t x = 0; x < 3; x++) {
228 uint8_t pin = tp_pins[x];
229 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
230 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
234 static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row)
236 // Store last value of row prior to reading
237 matrix_row_t last_row_value = current_matrix[current_row];
239 // Clear data in matrix row
240 current_matrix[current_row] = 0;
242 // special case for trackpoint
243 if (current_row == 8) {
244 for(uint8_t tp_index = 0; tp_index < 3; tp_index++) {
246 // Select the TP pin to read (active low)
247 uint8_t pin = tp_pins[tp_index];
248 uint8_t pin_state = (_SFR_IO8(pin >> 4) & _BV(pin & 0xF));
250 // Populate the matrix row with the state of the col pin
251 current_matrix[current_row] |= pin_state ? 0 : (ROW_SHIFTER << tp_index);
253 return (last_row_value != current_matrix[current_row]);
256 // Select row and wait for row selecton to stabilize
257 select_row(current_row);
258 _delay_us(5); // without this wait it won't read stable value.
262 for(uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
264 // Select the col pin to read (active low)
265 uint8_t pin = col_pins[col_index];
266 uint8_t pin_state = (_SFR_IO8(pin >> 4) & _BV(pin & 0xF));
268 // Populate the matrix row with the state of the col pin
269 current_matrix[current_row] |= pin_state ? 0 : (ROW_SHIFTER << col_index);
273 unselect_row(current_row);
275 return (last_row_value != current_matrix[current_row]);
278 static void select_row(uint8_t row)
280 PORTF = row_bit[row] | (PORTF & ~ROW_MASK);
283 static void unselect_row(uint8_t row)
287 static void unselect_rows(void)