2 Copyright 2012 Jun Wako
3 Generated by planckkeyboard.com (2014 Jack Humbert)
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation, either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
25 #include <util/delay.h>
35 static uint8_t debouncing = DEBOUNCE;
37 /* matrix state(1:on, 0:off) */
38 static matrix_row_t matrix[MATRIX_ROWS];
39 static matrix_row_t matrix_debouncing[MATRIX_ROWS];
41 static matrix_row_t read_cols(void);
42 static void init_cols(void);
43 static void unselect_rows(void);
44 static void select_row(uint8_t row);
47 uint8_t matrix_rows(void)
53 uint8_t matrix_cols(void)
58 void matrix_init(void)
60 // initialize row and col
64 // initialize matrix state: all keys off
65 for (uint8_t i=0; i < MATRIX_ROWS; i++) {
67 matrix_debouncing[i] = 0;
71 uint8_t matrix_scan(void)
73 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
75 _delay_us(30); // without this wait read unstable value.
76 matrix_row_t cols = read_cols();
77 if (matrix_debouncing[i] != cols) {
78 matrix_debouncing[i] = cols;
80 debug("bounce!: "); debug_hex(debouncing); debug("\n");
82 debouncing = DEBOUNCE;
91 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
92 matrix[i] = matrix_debouncing[i];
100 bool matrix_is_modified(void)
102 if (debouncing) return false;
107 bool matrix_is_on(uint8_t row, uint8_t col)
109 return (matrix[row] & ((matrix_row_t)1<col));
113 matrix_row_t matrix_get_row(uint8_t row)
118 void matrix_print(void)
120 print("\nr/c 0123456789ABCDEF\n");
121 for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
122 phex(row); print(": ");
123 pbin_reverse16(matrix_get_row(row));
128 uint8_t matrix_key_count(void)
131 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
132 count += bitpop16(matrix[i]);
137 static void init_cols(void)
139 DDRB &= ~(1<<7 | 1<<4 | 1<<5 | 1<<6);
140 PORTB |= (1<<7 | 1<<4 | 1<<5 | 1<<6);
143 DDRD &= ~(1<<0 | 1<<1 | 1<<2 | 1<<3 | 1<<7);
144 PORTD |= (1<<0 | 1<<1 | 1<<2 | 1<<3 | 1<<7);
145 DDRF &= ~(1<<7 | 1<<6);
146 PORTF |= (1<<7 | 1<<6);
150 static matrix_row_t read_cols(void)
152 return (PINB&(1<<7) ? 0 : (1<<0)) |
153 (PIND&(1<<0) ? 0 : (1<<1)) |
154 (PIND&(1<<1) ? 0 : (1<<2)) |
155 (PIND&(1<<2) ? 0 : (1<<3)) |
156 (PIND&(1<<3) ? 0 : (1<<4)) |
157 (PINC&(1<<6) ? 0 : (1<<5)) |
158 (PIND&(1<<7) ? 0 : (1<<6)) |
159 (PINB&(1<<4) ? 0 : (1<<7)) |
160 (PINB&(1<<5) ? 0 : (1<<8)) |
161 (PINB&(1<<6) ? 0 : (1<<9)) |
162 (PINF&(1<<7) ? 0 : (1<<10)) |
163 (PINF&(1<<6) ? 0 : (1<<11));
167 static void unselect_rows(void)
169 DDRF &= ~(1<<0 | 1<<1 | 1<<4 | 1<<5);
170 PORTF |= (1<<0 | 1<<1 | 1<<4 | 1<<5);
174 static void select_row(uint8_t row)