Merge pull request #230 from jerryen/master
[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
68 // LED flash
69 DDRD |= (1<<6); PORTD |= (1<<6);
70 _delay_ms(500);
71 DDRD |= (1<<6); PORTD &= ~(1<<6);
72
73 return;
74 }
75
76 uint8_t matrix_scan(void)
77 {
78 uint8_t key;
79
80 is_modified = false;
81 key = m0110_recv_key();
82
83 if (key == M0110_NULL) {
84 return 0;
85 } else if (key == M0110_ERROR) {
86 return 0;
87 } else {
88 is_modified = true;
89 register_key(key);
90 }
91
92 if (debug_enable) {
93 print("["); phex(key); print("]\n");
94 }
95 return 1;
96 }
97
98 bool matrix_is_modified(void)
99 {
100 return is_modified;
101 }
102
103 inline
104 bool matrix_has_ghost(void)
105 {
106 return false;
107 }
108
109 inline
110 bool matrix_is_on(uint8_t row, uint8_t col)
111 {
112 return (matrix[row] & (1<<col));
113 }
114
115 inline
116 uint8_t matrix_get_row(uint8_t row)
117 {
118 return matrix[row];
119 }
120
121 void matrix_print(void)
122 {
123 print("\nr/c 01234567\n");
124 for (uint8_t row = 0; row < matrix_rows(); row++) {
125 phex(row); print(": ");
126 pbin_reverse(matrix_get_row(row));
127 print("\n");
128 }
129 }
130
131 uint8_t matrix_key_count(void)
132 {
133 uint8_t count = 0;
134 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
135 count += bitpop(matrix[i]);
136 }
137 return count;
138 }
139
140 inline
141 static void register_key(uint8_t key)
142 {
143 if (key&0x80) {
144 matrix[ROW(key)] &= ~(1<<COL(key));
145 } else {
146 matrix[ROW(key)] |= (1<<COL(key));
147 }
148 }
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