Fix matrix.c to use new default impl.
[tmk_keyboard.git] / converter / pc98_usb / matrix.c
1 /*
2 Copyright 2012 Jun Wako <wakojun@gmail.com>
3
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.
8
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.
13
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/>.
16 */
17
18 #include <stdint.h>
19 #include <stdbool.h>
20 #include <avr/io.h>
21 #include <util/delay.h>
22 #include "print.h"
23 #include "util.h"
24 #include "matrix.h"
25 #include "debug.h"
26 #include "protocol/serial.h"
27
28
29 /*
30 * Matrix Array usage:
31 *
32 * ROW: 16(4bits)
33 * COL: 8(3bits)
34 *
35 * 8bit wide
36 * +---------+
37 * 0|00 ... 07|
38 * 1|08 ... 0F|
39 * :| ... |
40 * :| ... |
41 * E|70 ... 77|
42 * F|78 ... 7F|
43 * +---------+
44 */
45 static uint8_t matrix[MATRIX_ROWS];
46 #define ROW(code) ((code>>3)&0xF)
47 #define COL(code) (code&0x07)
48
49
50 static void pc98_inhibit_repeat(void)
51 {
52 uint8_t code;
53
54 while (serial_recv()) ;
55 RETRY:
56 PC98_RDY_PORT |= (1<<PC98_RDY_BIT);
57 _delay_ms(500);
58 serial_send(0x9C);
59
60 PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT);
61 _delay_ms(100);
62 while (!(code = serial_recv())) ;
63 print("PC98: send 9C: "); print_hex8(code); print("\n");
64 if (code != 0xFA) goto RETRY;
65
66
67
68 PC98_RDY_PORT |= (1<<PC98_RDY_BIT);
69 _delay_ms(100);
70 serial_send(0x70);
71
72 PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT);
73 _delay_ms(100);
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;
78 }
79
80 void matrix_init(void)
81 {
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);
88
89
90 serial_init();
91
92 // PC98 reset
93 /*
94 PC98_RST_PORT &= ~(1<<PC98_RST_BIT);
95 _delay_us(15);
96 PC98_RST_PORT |= (1<<PC98_RST_BIT);
97 _delay_us(13);
98 PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT);
99 */
100
101 _delay_ms(500);
102 pc98_inhibit_repeat();
103
104
105 // PC98 ready
106 PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT);
107
108 // initialize matrix state: all keys off
109 for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;
110
111 debug("init\n");
112 return;
113 }
114
115 uint8_t matrix_scan(void)
116 {
117 uint16_t code;
118 PC98_RDY_PORT |= (1<<PC98_RDY_BIT);
119 _delay_us(30);
120 code = serial_recv2();
121 PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT);
122 if (code == -1) return 0;
123
124 if (code == 0x60) {
125 pc98_inhibit_repeat();
126
127 /*
128 PC98_RDY_PORT |= (1<<PC98_RDY_BIT);
129 _delay_ms(100);
130 serial_send(0x96);
131 PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT);
132 */
133
134 return 0;
135 }
136
137 print_hex8(code); print(" ");
138
139 if (code&0x80) {
140 // break code
141 if (matrix_is_on(ROW(code), COL(code))) {
142 matrix[ROW(code)] &= ~(1<<COL(code));
143 }
144 } else {
145 // make code
146 if (!matrix_is_on(ROW(code), COL(code))) {
147 matrix[ROW(code)] |= (1<<COL(code));
148 }
149 }
150 return code;
151 }
152
153 inline
154 uint8_t matrix_get_row(uint8_t row)
155 {
156 return matrix[row];
157 }
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