2 Copyright 2017 Gabriel Young <gabeplaysdrums@live.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/>.
21 #include <util/delay.h>
27 #define CONFIG_LED_IO \
29 DDRC |= (1<<5) | (1<<6);
31 #define USB_LED_CAPS_LOCK_ON PORTC &= ~(1<<5)
32 #define USB_LED_CAPS_LOCK_OFF PORTC |= (1<<5)
33 #define USB_LED_NUM_LOCK_ON PORTB &= ~(1<<7)
34 #define USB_LED_NUM_LOCK_OFF PORTB |= (1<<7)
35 #define USB_LED_SCROLL_LOCK_ON PORTC &= ~(1<<6)
36 #define USB_LED_SCROLL_LOCK_OFF PORTC |= (1<<6)
38 #ifndef DEBOUNCING_DELAY
39 # define DEBOUNCING_DELAY 5
41 static uint8_t debouncing = DEBOUNCING_DELAY;
43 static matrix_row_t matrix[MATRIX_ROWS];
44 static matrix_row_t matrix_debouncing[MATRIX_ROWS];
46 static matrix_row_t scan_col(void);
47 static void select_col(uint8_t row);
49 void matrix_init(void) {
52 /* Column input pins */
58 for (uint8_t i=0; i < MATRIX_ROWS; i++)
59 matrix[i] = matrix_debouncing[i] = 0;
61 matrix_init_quantum();
64 uint8_t matrix_scan(void) {
65 for (uint8_t col = 0; col < MATRIX_COLS; col++) {
68 matrix_row_t col_scan = scan_col();
69 for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
70 bool prev_bit = matrix_debouncing[row] & ((matrix_row_t)1<<col);
71 bool curr_bit = col_scan & (1<<row);
72 if (prev_bit != curr_bit) {
73 matrix_debouncing[row] ^= ((matrix_row_t)1<<col);
74 debouncing = DEBOUNCING_DELAY;
83 for (uint8_t i = 0; i < MATRIX_ROWS; i++)
84 matrix[i] = matrix_debouncing[i];
87 matrix_scan_quantum();
91 inline matrix_row_t matrix_get_row(uint8_t row) {
95 void matrix_print(void) {
96 print("\nr\\c ABCDEFGHIJKLMNOPQR\n");
97 for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
98 matrix_row_t matrix_row = matrix_get_row(row);
99 xprintf("%02X: ", row);
100 for (uint8_t col = 0; col < MATRIX_COLS; col++) {
101 bool curr_bit = matrix_row & (1<<col);
102 xprintf("%c", curr_bit ? '*' : '.');
108 uint8_t matrix_key_count(void) {
110 for (uint8_t row = 0; row < MATRIX_ROWS; row++)
111 count += bitpop32(matrix[row]);
115 static matrix_row_t scan_col(void) {
117 (PINC&(1<<7) ? 0 : ((matrix_row_t)1<<0)) |
118 (PINB&(1<<5) ? 0 : ((matrix_row_t)1<<1)) |
119 (PINB&(1<<4) ? 0 : ((matrix_row_t)1<<2)) |
120 (PINB&(1<<6) ? 0 : ((matrix_row_t)1<<3)) |
121 (PINB&(1<<1) ? 0 : ((matrix_row_t)1<<4)) |
122 (PINB&(1<<2) ? 0 : ((matrix_row_t)1<<5)) |
123 (PINB&(1<<3) ? 0 : ((matrix_row_t)1<<6)) |
124 (PINB&(1<<0) ? 0 : ((matrix_row_t)1<<7))
128 static void select_col(uint8_t col) {
130 case 0: PORTD = (PORTD & ~0b01111011) | 0b00011011; break;
131 case 1: PORTD = (PORTD & ~0b01111011) | 0b01000011; break;
132 case 2: PORTD = (PORTD & ~0b01111011) | 0b01101010; break;
133 case 3: PORTD = (PORTD & ~0b01111011) | 0b01111001; break;
134 case 4: PORTD = (PORTD & ~0b01111011) | 0b01100010; break;
135 case 5: PORTD = (PORTD & ~0b01111011) | 0b01110001; break;
136 case 6: PORTD = (PORTD & ~0b01111011) | 0b01100001; break;
137 case 7: PORTD = (PORTD & ~0b01111011) | 0b01110000; break;
138 case 8: PORTD = (PORTD & ~0b01111011) | 0b01100000; break;
139 case 9: PORTD = (PORTD & ~0b01111011) | 0b01101000; break;
140 case 10: PORTD = (PORTD & ~0b01111011) | 0b00101011; break;
141 case 11: PORTD = (PORTD & ~0b01111011) | 0b00110011; break;
142 case 12: PORTD = (PORTD & ~0b01111011) | 0b00100011; break;
143 case 13: PORTD = (PORTD & ~0b01111011) | 0b01111000; break;
144 case 14: PORTD = (PORTD & ~0b01111011) | 0b00010011; break;
145 case 15: PORTD = (PORTD & ~0b01111011) | 0b01101001; break;
146 case 16: PORTD = (PORTD & ~0b01111011) | 0b00001011; break;
147 case 17: PORTD = (PORTD & ~0b01111011) | 0b00111011; break;