]> git.gir.st - tmk_keyboard.git/blob - converter/m0110_usb/matrix.c
Merge commit 'a074364c3731d66b56d988c8a6c960a83ea0e0a1' as 'tmk_core'
[tmk_keyboard.git] / converter / m0110_usb / matrix.c
1 /*
2 Copyright 2011,2012 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 /*
19 * scan matrix
20 */
21 #include <stdint.h>
22 #include <stdbool.h>
23 #include <avr/io.h>
24 #include <util/delay.h>
25 #include "print.h"
26 #include "util.h"
27 #include "debug.h"
28 #include "host.h"
29 #include "led.h"
30 #include "m0110.h"
31 #include "matrix.h"
32
33
34 #define CAPS 0x39
35 #define CAPS_BREAK (CAPS | 0x80)
36 #define ROW(key) ((key)>>3&0x0F)
37 #define COL(key) ((key)&0x07)
38
39
40 static bool is_modified = false;
41
42 // matrix state buffer(1:on, 0:off)
43 static uint8_t *matrix;
44 static uint8_t _matrix0[MATRIX_ROWS];
45
46 static void register_key(uint8_t key);
47
48
49 inline
50 uint8_t matrix_rows(void)
51 {
52 return MATRIX_ROWS;
53 }
54
55 inline
56 uint8_t matrix_cols(void)
57 {
58 return MATRIX_COLS;
59 }
60
61 void matrix_init(void)
62 {
63 m0110_init();
64 // initialize matrix state: all keys off
65 for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix0[i] = 0x00;
66 matrix = _matrix0;
67 return;
68 }
69
70 uint8_t matrix_scan(void)
71 {
72 uint8_t key;
73
74 is_modified = false;
75 key = m0110_recv_key();
76
77 if (key == M0110_NULL) {
78 return 0;
79 } else if (key == M0110_ERROR) {
80 return 0;
81 } else {
82 is_modified = true;
83 register_key(key);
84 }
85
86 if (debug_enable) {
87 print("["); phex(key); print("]\n");
88 }
89 return 1;
90 }
91
92 bool matrix_is_modified(void)
93 {
94 return is_modified;
95 }
96
97 inline
98 bool matrix_has_ghost(void)
99 {
100 return false;
101 }
102
103 inline
104 bool matrix_is_on(uint8_t row, uint8_t col)
105 {
106 return (matrix[row] & (1<<col));
107 }
108
109 inline
110 uint8_t matrix_get_row(uint8_t row)
111 {
112 return matrix[row];
113 }
114
115 void matrix_print(void)
116 {
117 print("\nr/c 01234567\n");
118 for (uint8_t row = 0; row < matrix_rows(); row++) {
119 phex(row); print(": ");
120 pbin_reverse(matrix_get_row(row));
121 print("\n");
122 }
123 }
124
125 uint8_t matrix_key_count(void)
126 {
127 uint8_t count = 0;
128 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
129 count += bitpop(matrix[i]);
130 }
131 return count;
132 }
133
134 inline
135 static void register_key(uint8_t key)
136 {
137 if (key&0x80) {
138 matrix[ROW(key)] &= ~(1<<COL(key));
139 } else {
140 matrix[ROW(key)] |= (1<<COL(key));
141 }
142 }
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