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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)
50 static void pc98_inhibit_repeat(void)
54 while (serial_recv()) ;
56 PC98_RDY_PORT
|= (1<<PC98_RDY_BIT
);
60 PC98_RDY_PORT
&= ~(1<<PC98_RDY_BIT
);
62 while (!(code
= serial_recv())) ;
63 print("PC98: send 9C: "); print_hex8(code
); print("\n");
64 if (code
!= 0xFA) goto RETRY
;
68 PC98_RDY_PORT
|= (1<<PC98_RDY_BIT
);
72 PC98_RDY_PORT
&= ~(1<<PC98_RDY_BIT
);
74 //code = serial_recv();
75 while (!(code
= serial_recv())) ;
76 print("PC98: send 70: "); print_hex8(code
); print("\n");
77 if (code
!= 0xFA) goto RETRY
;
80 void matrix_init(void)
82 PC98_RST_DDR
|= (1<<PC98_RST_BIT
);
83 PC98_RDY_DDR
|= (1<<PC98_RDY_BIT
);
84 PC98_RTY_DDR
|= (1<<PC98_RTY_BIT
);
85 PC98_RST_PORT
|= (1<<PC98_RST_BIT
);
86 PC98_RDY_PORT
|= (1<<PC98_RDY_BIT
);
87 PC98_RTY_PORT
|= (1<<PC98_RTY_BIT
);
94 PC98_RST_PORT &= ~(1<<PC98_RST_BIT);
96 PC98_RST_PORT |= (1<<PC98_RST_BIT);
98 PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT);
102 pc98_inhibit_repeat();
106 PC98_RDY_PORT
&= ~(1<<PC98_RDY_BIT
);
108 // initialize matrix state: all keys off
109 for (uint8_t i
=0; i
< MATRIX_ROWS
; i
++) matrix
[i
] = 0x00;
115 uint8_t matrix_scan(void)
118 PC98_RDY_PORT
|= (1<<PC98_RDY_BIT
);
120 code
= serial_recv2();
121 PC98_RDY_PORT
&= ~(1<<PC98_RDY_BIT
);
122 if (code
== -1) return 0;
125 pc98_inhibit_repeat();
128 PC98_RDY_PORT |= (1<<PC98_RDY_BIT);
131 PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT);
137 print_hex8(code
); print(" ");
141 if (matrix_is_on(ROW(code
), COL(code
))) {
142 matrix
[ROW(code
)] &= ~(1<<COL(code
));
146 if (!matrix_is_on(ROW(code
), COL(code
))) {
147 matrix
[ROW(code
)] |= (1<<COL(code
));
154 uint8_t matrix_get_row(uint8_t row
)