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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 | static bool is_modified = false; | |
50 | ||
51 | ||
52 | inline | |
53 | uint8_t matrix_rows(void) | |
54 | { | |
55 | return MATRIX_ROWS; | |
56 | } | |
57 | ||
58 | inline | |
59 | uint8_t matrix_cols(void) | |
60 | { | |
61 | return MATRIX_COLS; | |
62 | } | |
63 | ||
64 | void matrix_init(void) | |
65 | { | |
66 | print_enable = true; | |
67 | debug_enable = true; | |
68 | ||
69 | PC98_RST_DDR |= (1<<PC98_RST_BIT); | |
70 | PC98_RDY_DDR |= (1<<PC98_RDY_BIT); | |
71 | PC98_RTY_DDR |= (1<<PC98_RTY_BIT); | |
72 | PC98_RST_PORT |= (1<<PC98_RST_BIT); | |
73 | PC98_RDY_PORT |= (1<<PC98_RDY_BIT); | |
74 | PC98_RTY_PORT |= (1<<PC98_RTY_BIT); | |
75 | ||
76 | DDRD |= 1<<7; | |
77 | ||
78 | ||
79 | serial_init(); | |
80 | ||
81 | // PC98 reset | |
82 | PC98_RST_PORT &= ~(1<<PC98_RST_BIT); | |
83 | _delay_us(15); | |
84 | PC98_RST_PORT |= (1<<PC98_RST_BIT); | |
85 | _delay_us(13); | |
86 | PC98_RDY_PORT |= (1<<PC98_RDY_BIT); | |
87 | ||
88 | // PC98 ready | |
89 | PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT); | |
90 | ||
91 | // initialize matrix state: all keys off | |
92 | for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00; | |
93 | ||
94 | debug("init\n"); | |
95 | return; | |
96 | } | |
97 | ||
98 | uint8_t matrix_scan(void) | |
99 | { | |
100 | is_modified = false; | |
101 | ||
102 | uint8_t code; | |
103 | PC98_RDY_PORT |= (1<<PC98_RDY_BIT); | |
104 | _delay_us(30); | |
105 | code = serial_recv(); | |
106 | PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT); | |
107 | if (!code) return 0; | |
108 | ||
109 | debug_hex(code); debug(" "); | |
110 | ||
111 | /* | |
112 | switch (code) { | |
113 | case 0x7E: // reset fail | |
114 | case 0xFE: // layout | |
115 | case 0xFF: // reset success | |
116 | _delay_ms(500); | |
117 | // ignore response byte | |
118 | debug("(response ignored:"); | |
119 | while ((code = serial_recv())) { debug(" "); debug_hex(code); } | |
120 | debug(") "); | |
121 | // FALL THROUGH | |
122 | case 0x7F: | |
123 | // all keys up | |
124 | for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00; | |
125 | return 0; | |
126 | } | |
127 | ||
128 | if (code&0x80) { | |
129 | // break code | |
130 | if (matrix_is_on(ROW(code), COL(code))) { | |
131 | matrix[ROW(code)] &= ~(1<<COL(code)); | |
132 | is_modified = true; | |
133 | } | |
134 | } else { | |
135 | // make code | |
136 | if (!matrix_is_on(ROW(code), COL(code))) { | |
137 | matrix[ROW(code)] |= (1<<COL(code)); | |
138 | is_modified = true; | |
139 | } | |
140 | } | |
141 | */ | |
142 | return code; | |
143 | } | |
144 | ||
145 | bool matrix_is_modified(void) | |
146 | { | |
147 | return is_modified; | |
148 | } | |
149 | ||
150 | inline | |
151 | bool matrix_has_ghost(void) | |
152 | { | |
153 | return false; | |
154 | } | |
155 | ||
156 | inline | |
157 | bool matrix_is_on(uint8_t row, uint8_t col) | |
158 | { | |
159 | return (matrix[row] & (1<<col)); | |
160 | } | |
161 | ||
162 | inline | |
163 | uint8_t matrix_get_row(uint8_t row) | |
164 | { | |
165 | return matrix[row]; | |
166 | } | |
167 | ||
168 | void matrix_print(void) | |
169 | { | |
170 | print("\nr/c 01234567\n"); | |
171 | for (uint8_t row = 0; row < matrix_rows(); row++) { | |
172 | phex(row); print(": "); | |
173 | pbin_reverse(matrix_get_row(row)); | |
174 | print("\n"); | |
175 | } | |
176 | } | |
177 | ||
178 | uint8_t matrix_key_count(void) | |
179 | { | |
180 | uint8_t count = 0; | |
181 | for (uint8_t i = 0; i < MATRIX_ROWS; i++) { | |
182 | count += bitpop(matrix[i]); | |
183 | } | |
184 | return count; | |
185 | } |