]>
git.gir.st - tmk_keyboard.git/blob - converter/ibm4704_usb/matrix.c
2 Copyright 2014 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>
30 static void matrix_make(uint8_t code
);
31 static void matrix_break(uint8_t code
);
36 * IBM 4704 scan codes are assigned into 128(16x8)-cell matrix.
47 static uint8_t matrix
[MATRIX_ROWS
];
49 // scan code bits 7654 3210
50 // R:row/C:column -RRR RCCC
51 #define ROW(code) ((code>>3)&0x0f)
52 #define COL(code) (code&0x07)
56 uint8_t matrix_rows(void)
62 uint8_t matrix_cols(void)
67 static void enable_break(void)
69 print("Enable break: ");
70 while (ibm4704_send(0xFC)) { _delay_ms(10); }
71 // valid scancode: 00-79h
72 for (uint8_t code
= 0; code
< 0x7F; code
++) {
73 while (ibm4704_send(0x80|code
)) _delay_ms(10);
74 _delay_ms(5); // wait for response
75 // No response(FF) when ok, FD when out of bound
76 xprintf("s%02X:r%02X ", code
, ibm4704_recv());
78 while (ibm4704_send(0xFF)) { _delay_ms(10); } // End
83 void matrix_setup(void)
88 void matrix_init(void)
92 print("IBM 4704 converter\n");
94 _delay_ms(2000); // wait for keyboard starting up
95 xprintf("Keyboard ID: %02X\n", ibm4704_recv());
102 uint8_t matrix_scan(void)
104 uint8_t code
= ibm4704_recv();
108 } else if ((code
&0x7F) >= 0x7C) {
109 // 0xFF-FC and 0x7F-7C is not scancode
110 xprintf("Error: %02X\n", code
);
113 } else if (code
&0x80) {
114 dprintf("%02X\n", code
);
117 dprintf("%02X\n", code
);
124 bool matrix_is_on(uint8_t row
, uint8_t col
)
126 return (matrix
[row
] & (1<<col
));
130 uint8_t matrix_get_row(uint8_t row
)
135 void matrix_print(void)
137 print("\nr/c 01234567\n");
138 for (uint8_t row
= 0; row
< matrix_rows(); row
++) {
139 xprintf("%02X: %08b\n", row
, bitrev(matrix_get_row(row
)));
146 static void matrix_make(uint8_t code
)
148 matrix
[ROW(code
)] |= 1<<COL(code
);
152 static void matrix_break(uint8_t code
)
154 matrix
[ROW(code
)] &= ~(1<<COL(code
));
157 void matrix_clear(void)
159 for (uint8_t i
=0; i
< MATRIX_ROWS
; i
++) matrix
[i
] = 0x00;