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 static void pc98_inhibit_repeat(void)
68 while (serial_recv()) ;
70 PC98_RDY_PORT |= (1<<PC98_RDY_BIT);
74 PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT);
76 while (!(code = serial_recv())) ;
77 print("PC98: send 9C: "); print_hex8(code); print("\n");
78 if (code != 0xFA) goto RETRY;
82 PC98_RDY_PORT |= (1<<PC98_RDY_BIT);
86 PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT);
88 //code = serial_recv();
89 while (!(code = serial_recv())) ;
90 print("PC98: send 70: "); print_hex8(code); print("\n");
91 if (code != 0xFA) goto RETRY;
94 void matrix_init(void)
97 // debug_enable = true;
98 // debug_matrix = true;
100 PC98_RST_DDR |= (1<<PC98_RST_BIT);
101 PC98_RDY_DDR |= (1<<PC98_RDY_BIT);
102 PC98_RTY_DDR |= (1<<PC98_RTY_BIT);
103 PC98_RST_PORT |= (1<<PC98_RST_BIT);
104 PC98_RDY_PORT |= (1<<PC98_RDY_BIT);
105 PC98_RTY_PORT |= (1<<PC98_RTY_BIT);
112 PC98_RST_PORT &= ~(1<<PC98_RST_BIT);
114 PC98_RST_PORT |= (1<<PC98_RST_BIT);
116 PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT);
120 pc98_inhibit_repeat();
124 PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT);
126 // initialize matrix state: all keys off
127 for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;
133 uint8_t matrix_scan(void)
138 PC98_RDY_PORT |= (1<<PC98_RDY_BIT);
140 code = serial_recv2();
141 PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT);
142 if (code == -1) return 0;
145 pc98_inhibit_repeat();
148 PC98_RDY_PORT |= (1<<PC98_RDY_BIT);
151 PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT);
157 print_hex8(code); print(" ");
161 if (matrix_is_on(ROW(code), COL(code))) {
162 matrix[ROW(code)] &= ~(1<<COL(code));
167 if (!matrix_is_on(ROW(code), COL(code))) {
168 matrix[ROW(code)] |= (1<<COL(code));
175 bool matrix_is_modified(void)
181 bool matrix_has_ghost(void)
187 bool matrix_is_on(uint8_t row, uint8_t col)
189 return (matrix[row] & (1<<col));
193 uint8_t matrix_get_row(uint8_t row)
198 void matrix_print(void)
200 print("\nr/c 01234567\n");
201 for (uint8_t row = 0; row < matrix_rows(); row++) {
202 phex(row); print(": ");
203 pbin_reverse(matrix_get_row(row));
208 uint8_t matrix_key_count(void)
211 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
212 count += bitpop(matrix[i]);