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>
26 #include "protocol/serial.h"
45 static uint8_t matrix[MATRIX_ROWS];
46 #define ROW(code) ((code>>3)&0xF)
47 #define COL(code) (code&0x07)
49 static bool is_modified = false;
53 uint8_t matrix_rows(void)
59 uint8_t matrix_cols(void)
64 void matrix_init(void)
69 PC98_RST_DDR |= (1<<PC98_RST_BIT);
70 PC98_RDY_DDR |= (1<<PC98_RDY_BIT);
71 PC98_RTY_DDR |= (1<<PC98_RTY_BIT);
72 PC98_RST_PORT |= (1<<PC98_RST_BIT);
73 PC98_RDY_PORT |= (1<<PC98_RDY_BIT);
74 PC98_RTY_PORT |= (1<<PC98_RTY_BIT);
82 PC98_RST_PORT &= ~(1<<PC98_RST_BIT);
84 PC98_RST_PORT |= (1<<PC98_RST_BIT);
86 PC98_RDY_PORT |= (1<<PC98_RDY_BIT);
89 PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT);
91 // initialize matrix state: all keys off
92 for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;
98 uint8_t matrix_scan(void)
103 PC98_RDY_PORT |= (1<<PC98_RDY_BIT);
105 code = serial_recv();
106 PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT);
109 debug_hex(code); debug(" ");
113 case 0x7E: // reset fail
115 case 0xFF: // reset success
117 // ignore response byte
118 debug("(response ignored:");
119 while ((code = serial_recv())) { debug(" "); debug_hex(code); }
124 for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;
130 if (matrix_is_on(ROW(code), COL(code))) {
131 matrix[ROW(code)] &= ~(1<<COL(code));
136 if (!matrix_is_on(ROW(code), COL(code))) {
137 matrix[ROW(code)] |= (1<<COL(code));
145 bool matrix_is_modified(void)
151 bool matrix_has_ghost(void)
157 bool matrix_is_on(uint8_t row, uint8_t col)
159 return (matrix[row] & (1<<col));
163 uint8_t matrix_get_row(uint8_t row)
168 void matrix_print(void)
170 print("\nr/c 01234567\n");
171 for (uint8_t row = 0; row < matrix_rows(); row++) {
172 phex(row); print(": ");
173 pbin_reverse(matrix_get_row(row));
178 uint8_t matrix_key_count(void)
181 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
182 count += bitpop(matrix[i]);