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>
34 #if (MATRIX_COLS > 16)
35 # error "MATRIX_COLS must not exceed 16"
37 #if (MATRIX_ROWS > 255)
38 # error "MATRIX_ROWS must not exceed 255"
42 #define CAPS_UP (CAPS | 0x80)
43 #define ROW(key) ((key)>>3&0x0F)
44 #define COL(key) ((key)&0x07)
47 static bool _matrix_is_modified = false;
49 // matrix state buffer(1:on, 0:off)
50 #if (MATRIX_COLS <= 8)
51 static uint8_t *matrix;
52 static uint8_t _matrix0[MATRIX_ROWS];
54 static uint16_t *matrix;
55 static uint16_t _matrix0[MATRIX_ROWS];
58 #ifdef MATRIX_HAS_GHOST
59 static bool matrix_has_ghost_in_row(uint8_t row);
61 static void _register_key(uint8_t key);
65 uint8_t matrix_rows(void)
71 uint8_t matrix_cols(void)
76 void matrix_init(void)
80 // initialize matrix state: all keys off
81 for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix0[i] = 0x00;
87 debug_keyboard = true;
89 print("debug enabled.\n");
93 uint8_t matrix_scan(void)
98 _matrix_is_modified = false;
99 codes = adb_host_kbd_recv();
103 if (debug_enable && codes) {
104 print("adb_host_kbd_recv: "); phex16(codes); print("\n");
107 #ifdef MATRIX_HAS_LOCKING_CAPS
108 // Send Caps key up event
109 if (matrix_is_on(ROW(CAPS), COL(CAPS))) {
110 _matrix_is_modified = true;
111 _register_key(CAPS_UP);
114 if (codes == 0) { // no keys
116 } else if (key0 == 0xFF && key1 != 0xFF) { // error
119 #ifdef MATRIX_HAS_LOCKING_CAPS
120 if (host_keyboard_leds() & (1<<USB_LED_CAPS_LOCK)) {
121 // Ignore LockingCaps key down event when CAPS LOCK is on
122 if (key0 == CAPS && (key1 == CAPS || key1 == 0xFF)) return 0;
123 if (key0 == CAPS) key0 = key1;
124 if (key1 == CAPS) key1 = 0xFF;
125 // Convert LockingCaps key up event into down event
126 if (key0 == CAPS_UP) key0 = CAPS;
127 if (key1 == CAPS_UP) key1 = CAPS;
130 // Ignore LockingCaps key up event when CAPS LOCK is off
131 if (key0 == CAPS_UP && (key1 == CAPS_UP || key1 == 0xFF)) return 0;
132 if (key0 == CAPS_UP) key0 = key1;
133 if (key1 == CAPS_UP) key1 = 0xFF;
136 _matrix_is_modified = true;
138 if (key1 != 0xFF) // key1 is 0xFF when no second key.
145 bool matrix_is_modified(void)
147 return _matrix_is_modified;
151 bool matrix_has_ghost(void)
153 #ifdef MATRIX_HAS_GHOST
154 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
155 if (matrix_has_ghost_in_row(i))
163 bool matrix_is_on(uint8_t row, uint8_t col)
165 return (matrix[row] & (1<<col));
169 #if (MATRIX_COLS <= 8)
170 uint8_t matrix_get_row(uint8_t row)
172 uint16_t matrix_get_row(uint8_t row)
178 void matrix_print(void)
180 #if (MATRIX_COLS <= 8)
181 print("r/c 01234567\n");
183 print("r/c 0123456789ABCDEF\n");
185 for (uint8_t row = 0; row < matrix_rows(); row++) {
186 phex(row); print(": ");
187 #if (MATRIX_COLS <= 8)
188 pbin_reverse(matrix_get_row(row));
190 pbin_reverse16(matrix_get_row(row));
192 #ifdef MATRIX_HAS_GHOST
193 if (matrix_has_ghost_in_row(row)) {
201 uint8_t matrix_key_count(void)
204 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
205 #if (MATRIX_COLS <= 8)
206 count += bitpop(matrix[i]);
208 count += bitpop16(matrix[i]);
214 #ifdef MATRIX_HAS_GHOST
216 static bool matrix_has_ghost_in_row(uint8_t row)
218 // no ghost exists in case less than 2 keys on
219 if (((matrix[row] - 1) & matrix[row]) == 0)
222 // ghost exists in case same state as other row
223 for (uint8_t i=0; i < MATRIX_ROWS; i++) {
224 if (i != row && (matrix[i] & matrix[row]) == matrix[row])
232 static void _register_key(uint8_t key)
238 matrix[row] &= ~(1<<col);
240 matrix[row] |= (1<<col);