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/>.
21 #include <util/delay.h>
29 static void matrix_make(uint8_t code);
30 static void matrix_break(uint8_t code);
31 #ifdef MATRIX_HAS_GHOST
32 static bool matrix_has_ghost_in_row(uint8_t row);
38 * 'Scan Code Set 3' is assigned into 17x8 cell matrix.
48 static uint8_t matrix[MATRIX_ROWS];
49 #define ROW(code) (code>>3)
50 #define COL(code) (code&0x07)
52 static bool is_modified = false;
56 uint8_t matrix_rows(void)
62 uint8_t matrix_cols(void)
67 void matrix_init(void)
70 //debug_matrix = true;
71 //debug_keyboard = true;
72 //debug_mouse = false;
76 // initialize matrix state: all keys off
77 for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;
82 uint8_t matrix_scan(void)
85 // scan code reading states
99 if ((code = ps2_host_recv())) {
100 debug("r"); debug_hex(code); debug(" ");
106 if (ps2_host_send(0xFF) == 0xFA) {
107 debug("[ack]\nRESET_RESPONSE: ");
108 state = RESET_RESPONSE;
113 debug("[ok]\nKBD_ID: ");
116 debug("err\nRESET: ");
120 // after reset receive keyboad ID(2 bytes)
134 if (ps2_host_send(0xF8) == 0xFA) {
135 debug("[ack]\nREADY\n");
147 default: // normal key make
151 debug("unexpected scan code at READY: "); debug_hex(code); debug("\n");
157 case F0: // Break code
165 debug("unexpected scan code at F0: "); debug_hex(code); debug("\n");
175 bool matrix_is_modified(void)
181 bool matrix_has_ghost(void)
183 #ifdef MATRIX_HAS_GHOST
184 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
185 if (matrix_has_ghost_in_row(i))
193 bool matrix_is_on(uint8_t row, uint8_t col)
195 return (matrix[row] & (1<<col));
199 uint8_t matrix_get_row(uint8_t row)
204 void matrix_print(void)
206 print("\nr/c 01234567\n");
207 for (uint8_t row = 0; row < matrix_rows(); row++) {
208 phex(row); print(": ");
209 pbin_reverse(matrix_get_row(row));
210 #ifdef MATRIX_HAS_GHOST
211 if (matrix_has_ghost_in_row(row)) {
219 uint8_t matrix_key_count(void)
222 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
223 count += bitpop(matrix[i]);
228 #ifdef MATRIX_HAS_GHOST
230 static bool matrix_has_ghost_in_row(uint8_t row)
232 // no ghost exists in case less than 2 keys on
233 if (((matrix[row] - 1) & matrix[row]) == 0)
236 // ghost exists in case same state as other row
237 for (uint8_t i=0; i < MATRIX_ROWS; i++) {
238 if (i != row && (matrix[i] & matrix[row]) == matrix[row])
247 static void matrix_make(uint8_t code)
249 if (!matrix_is_on(ROW(code), COL(code))) {
250 matrix[ROW(code)] |= 1<<COL(code);
256 static void matrix_break(uint8_t code)
258 if (matrix_is_on(ROW(code), COL(code))) {
259 matrix[ROW(code)] &= ~(1<<COL(code));