Merge branch 'm0110'
[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 #ifdef MATRIX_HAS_LOCKING_CAPS
78 // Send Caps key up event
79 if (matrix_is_on(ROW(CAPS), COL(CAPS))) {
80 is_modified = true;
81 register_key(CAPS_BREAK);
82 }
83 #endif
84 if (key == M0110_NULL) {
85 return 0;
86 } else if (key == M0110_ERROR) {
87 return 0;
88 } else {
89 #ifdef MATRIX_HAS_LOCKING_CAPS
90 if (host_keyboard_leds() & (1<<USB_LED_CAPS_LOCK)) {
91 // CAPS LOCK on:
92 // Ignore LockingCaps key down event
93 if (key == CAPS) return 0;
94 // Convert LockingCaps key up event into down event
95 if (key == CAPS_BREAK) key = CAPS;
96 } else {
97 // CAPS LOCK off:
98 // Ignore LockingCaps key up event
99 if (key == CAPS_BREAK) return 0;
100 }
101 #endif
102 is_modified = true;
103 register_key(key);
104 }
105
106 if (debug_enable) {
107 print("["); phex(key); print("]\n");
108 }
109 return 1;
110 }
111
112 bool matrix_is_modified(void)
113 {
114 return is_modified;
115 }
116
117 inline
118 bool matrix_has_ghost(void)
119 {
120 return false;
121 }
122
123 inline
124 bool matrix_is_on(uint8_t row, uint8_t col)
125 {
126 return (matrix[row] & (1<<col));
127 }
128
129 inline
130 uint8_t matrix_get_row(uint8_t row)
131 {
132 return matrix[row];
133 }
134
135 void matrix_print(void)
136 {
137 print("\nr/c 01234567\n");
138 for (uint8_t row = 0; row < matrix_rows(); row++) {
139 phex(row); print(": ");
140 pbin_reverse(matrix_get_row(row));
141 print("\n");
142 }
143 }
144
145 uint8_t matrix_key_count(void)
146 {
147 uint8_t count = 0;
148 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
149 count += bitpop(matrix[i]);
150 }
151 return count;
152 }
153
154 inline
155 static void register_key(uint8_t key)
156 {
157 if (key&0x80) {
158 matrix[ROW(key)] &= ~(1<<COL(key));
159 } else {
160 matrix[ROW(key)] |= (1<<COL(key));
161 }
162 }
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