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git.gir.st - tmk_keyboard.git/blob - converter/pc98_usb/matrix.c
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)
96 PC98_RST_DDR
|= (1<<PC98_RST_BIT
);
97 PC98_RDY_DDR
|= (1<<PC98_RDY_BIT
);
98 PC98_RTY_DDR
|= (1<<PC98_RTY_BIT
);
99 PC98_RST_PORT
|= (1<<PC98_RST_BIT
);
100 PC98_RDY_PORT
|= (1<<PC98_RDY_BIT
);
101 PC98_RTY_PORT
|= (1<<PC98_RTY_BIT
);
108 PC98_RST_PORT &= ~(1<<PC98_RST_BIT);
110 PC98_RST_PORT |= (1<<PC98_RST_BIT);
112 PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT);
116 pc98_inhibit_repeat();
120 PC98_RDY_PORT
&= ~(1<<PC98_RDY_BIT
);
122 // initialize matrix state: all keys off
123 for (uint8_t i
=0; i
< MATRIX_ROWS
; i
++) matrix
[i
] = 0x00;
129 uint8_t matrix_scan(void)
134 PC98_RDY_PORT
|= (1<<PC98_RDY_BIT
);
136 code
= serial_recv2();
137 PC98_RDY_PORT
&= ~(1<<PC98_RDY_BIT
);
138 if (code
== -1) return 0;
141 pc98_inhibit_repeat();
144 PC98_RDY_PORT |= (1<<PC98_RDY_BIT);
147 PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT);
153 print_hex8(code
); print(" ");
157 if (matrix_is_on(ROW(code
), COL(code
))) {
158 matrix
[ROW(code
)] &= ~(1<<COL(code
));
163 if (!matrix_is_on(ROW(code
), COL(code
))) {
164 matrix
[ROW(code
)] |= (1<<COL(code
));
171 bool matrix_is_modified(void)
177 bool matrix_has_ghost(void)
183 bool matrix_is_on(uint8_t row
, uint8_t col
)
185 return (matrix
[row
] & (1<<col
));
189 uint8_t matrix_get_row(uint8_t row
)
194 void matrix_print(void)
196 print("\nr/c 01234567\n");
197 for (uint8_t row
= 0; row
< matrix_rows(); row
++) {
198 phex(row
); print(": ");
199 pbin_reverse(matrix_get_row(row
));
204 uint8_t matrix_key_count(void)
207 for (uint8_t i
= 0; i
< MATRIX_ROWS
; i
++) {
208 count
+= bitpop(matrix
[i
]);