2 Copyright 2011 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/>.
24 #include <util/delay.h>
32 #if (MATRIX_COLS > 16)
33 # error "MATRIX_COLS must not exceed 16"
35 #if (MATRIX_ROWS > 255)
36 # error "MATRIX_ROWS must not exceed 255"
40 static bool _matrix_is_modified = false;
42 // matrix state buffer(1:on, 0:off)
43 #if (MATRIX_COLS <= 8)
44 static uint8_t *matrix;
45 static uint8_t _matrix0[MATRIX_ROWS];
47 static uint16_t *matrix;
48 static uint16_t _matrix0[MATRIX_ROWS];
51 #ifdef MATRIX_HAS_GHOST
52 static bool matrix_has_ghost_in_row(uint8_t row);
54 static void _register_key(uint8_t key);
58 uint8_t matrix_rows(void)
64 uint8_t matrix_cols(void)
69 void matrix_init(void)
73 // initialize matrix state: all keys off
74 for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix0[i] = 0x00;
80 debug_keyboard = true;
82 print("debug enabled.\n");
86 uint8_t matrix_scan(void)
91 _matrix_is_modified = false;
92 codes = adb_host_kbd_recv();
96 if (codes == 0) { // no keys
98 } else if (key0 == 0xFF && key1 != 0xFF) { // error
101 _matrix_is_modified = true;
103 if (key1 != 0xFF) // key1 is 0xFF when no second key.
108 print("adb_host_kbd_recv: "); phex16(codes); print("\n");
113 bool matrix_is_modified(void)
115 return _matrix_is_modified;
119 bool matrix_has_ghost(void)
121 #ifdef MATRIX_HAS_GHOST
122 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
123 if (matrix_has_ghost_in_row(i))
131 bool matrix_is_on(uint8_t row, uint8_t col)
133 return (matrix[row] & (1<<col));
137 #if (MATRIX_COLS <= 8)
138 uint8_t matrix_get_row(uint8_t row)
140 uint16_t matrix_get_row(uint8_t row)
146 void matrix_print(void)
148 #if (MATRIX_COLS <= 8)
149 print("\nr/c 01234567\n");
151 print("\nr/c 0123456789ABCDEF\n");
153 for (uint8_t row = 0; row < matrix_rows(); row++) {
154 phex(row); print(": ");
155 #if (MATRIX_COLS <= 8)
156 pbin_reverse(matrix_get_row(row));
158 pbin_reverse16(matrix_get_row(row));
160 #ifdef MATRIX_HAS_GHOST
161 if (matrix_has_ghost_in_row(row)) {
169 uint8_t matrix_key_count(void)
172 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
173 #if (MATRIX_COLS <= 8)
174 count += bitpop(matrix[i]);
176 count += bitpop16(matrix[i]);
182 #ifdef MATRIX_HAS_GHOST
184 static bool matrix_has_ghost_in_row(uint8_t row)
186 // no ghost exists in case less than 2 keys on
187 if (((matrix[row] - 1) & matrix[row]) == 0)
190 // ghost exists in case same state as other row
191 for (uint8_t i=0; i < MATRIX_ROWS; i++) {
192 if (i != row && (matrix[i] & matrix[row]) == matrix[row])
200 static void _register_key(uint8_t key)
206 matrix[row] &= ~(1<<col);
208 matrix[row] |= (1<<col);