Merge branch 'newdir'
[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 print_enable = true;
64 debug_enable = true;
65 debug_matrix = false;
66 debug_keyboard = false;
67 debug_mouse = false;
68 print("debug enabled.\n");
69
70 m0110_init();
71 // initialize matrix state: all keys off
72 for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix0[i] = 0x00;
73 matrix = _matrix0;
74 return;
75 }
76
77 uint8_t matrix_scan(void)
78 {
79 uint8_t key;
80
81 is_modified = false;
82 key = m0110_recv_key();
83
84 #ifdef MATRIX_HAS_LOCKING_CAPS
85 // Send Caps key up event
86 if (matrix_is_on(ROW(CAPS), COL(CAPS))) {
87 is_modified = true;
88 register_key(CAPS_BREAK);
89 }
90 #endif
91 if (key == M0110_NULL) {
92 return 0;
93 } else if (key == M0110_ERROR) {
94 return 0;
95 } else {
96 #ifdef MATRIX_HAS_LOCKING_CAPS
97 if (host_keyboard_leds() & (1<<USB_LED_CAPS_LOCK)) {
98 // CAPS LOCK on:
99 // Ignore LockingCaps key down event
100 if (key == CAPS) return 0;
101 // Convert LockingCaps key up event into down event
102 if (key == CAPS_BREAK) key = CAPS;
103 } else {
104 // CAPS LOCK off:
105 // Ignore LockingCaps key up event
106 if (key == CAPS_BREAK) return 0;
107 }
108 #endif
109 is_modified = true;
110 register_key(key);
111 }
112
113 if (debug_enable) {
114 print("["); phex(key); print("]\n");
115 }
116 return 1;
117 }
118
119 bool matrix_is_modified(void)
120 {
121 return is_modified;
122 }
123
124 inline
125 bool matrix_has_ghost(void)
126 {
127 return false;
128 }
129
130 inline
131 bool matrix_is_on(uint8_t row, uint8_t col)
132 {
133 return (matrix[row] & (1<<col));
134 }
135
136 inline
137 uint8_t matrix_get_row(uint8_t row)
138 {
139 return matrix[row];
140 }
141
142 void matrix_print(void)
143 {
144 print("\nr/c 01234567\n");
145 for (uint8_t row = 0; row < matrix_rows(); row++) {
146 phex(row); print(": ");
147 pbin_reverse(matrix_get_row(row));
148 print("\n");
149 }
150 }
151
152 uint8_t matrix_key_count(void)
153 {
154 uint8_t count = 0;
155 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
156 count += bitpop(matrix[i]);
157 }
158 return count;
159 }
160
161 inline
162 static void register_key(uint8_t key)
163 {
164 if (key&0x80) {
165 matrix[ROW(key)] &= ~(1<<COL(key));
166 } else {
167 matrix[ROW(key)] |= (1<<COL(key));
168 }
169 }
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