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/>.
21 #include <util/delay.h>
46 static uint8_t matrix[MATRIX_ROWS];
47 #define ROW(code) ((code>>3)&0xF)
48 #define COL(code) (code&0x07)
50 static bool is_modified = false;
54 uint8_t matrix_rows(void)
60 uint8_t matrix_cols(void)
65 void matrix_init(void)
72 // initialize matrix state: all keys off
73 for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;
78 uint8_t matrix_scan(void)
88 phex(code); print(" ");
91 if (matrix_is_on(ROW(code), COL(code))) {
92 matrix[ROW(code)] &= ~(1<<COL(code));
97 if (!matrix_is_on(ROW(code), COL(code))) {
98 matrix[ROW(code)] |= (1<<COL(code));
105 bool matrix_is_modified(void)
111 bool matrix_has_ghost(void)
117 bool matrix_is_on(uint8_t row, uint8_t col)
119 return (matrix[row] & (1<<col));
123 uint8_t matrix_get_row(uint8_t row)
128 void matrix_print(void)
130 print("\nr/c 01234567\n");
131 for (uint8_t row = 0; row < matrix_rows(); row++) {
132 phex(row); print(": ");
133 pbin_reverse(matrix_get_row(row));
138 uint8_t matrix_key_count(void)
141 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
142 count += bitpop(matrix[i]);