1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
|
/*
Copyright 2011 Jun Wako <wakojun@gmail.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* scan matrix
*/
#include <stdint.h>
#include <stdbool.h>
#include <avr/io.h>
#include <util/delay.h>
#include "print.h"
#include "util.h"
#include "debug.h"
#include "adb.h"
#include "matrix.h"
#if (MATRIX_COLS > 16)
# error "MATRIX_COLS must not exceed 16"
#endif
#if (MATRIX_ROWS > 255)
# error "MATRIX_ROWS must not exceed 255"
#endif
static bool is_modified = false;
// matrix state buffer(1:on, 0:off)
#if (MATRIX_COLS <= 8)
static uint8_t matrix[MATRIX_ROWS];
#else
static uint16_t matrix[MATRIX_ROWS];
#endif
#ifdef MATRIX_HAS_GHOST
static bool matrix_has_ghost_in_row(uint8_t row);
#endif
static void register_key(uint8_t key);
inline
uint8_t matrix_rows(void)
{
return MATRIX_ROWS;
}
inline
uint8_t matrix_cols(void)
{
return MATRIX_COLS;
}
void matrix_init(void)
{
adb_host_init();
// wait for keyboard to boot up and receive command
_delay_ms(1000);
// Enable keyboard left/right modifier distinction
// Addr:Keyboard(0010), Cmd:Listen(10), Register3(11)
// upper byte: reserved bits 0000, device address 0010
// lower byte: device handler 00000011
adb_host_listen(0x2B,0x02,0x03);
// initialize matrix state: all keys off
for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;
debug_enable = true;
debug_matrix = true;
debug_keyboard = true;
debug_mouse = true;
print("debug enabled.\n");
return;
}
uint8_t matrix_scan(void)
{
uint16_t codes;
uint8_t key0, key1;
is_modified = false;
_delay_ms(12); // delay for preventing overload of poor ADB keyboard controller
codes = adb_host_kbd_recv();
key0 = codes>>8;
key1 = codes&0xFF;
if (debug_matrix && codes) {
print("adb_host_kbd_recv: "); phex16(codes); print("\n");
}
if (codes == 0) { // no keys
return 0;
} else if (codes == 0x7F7F) { // power key press
register_key(0x7F);
} else if (codes == 0xFFFF) { // power key release
register_key(0xFF);
} else if (key0 == 0xFF) { // error
xprintf("adb_host_kbd_recv: ERROR(%02X)\n", codes);
return key1;
} else {
register_key(key0);
if (key1 != 0xFF) // key1 is 0xFF when no second key.
register_key(key1);
}
return 1;
}
bool matrix_is_modified(void)
{
return is_modified;
}
inline
bool matrix_has_ghost(void)
{
#ifdef MATRIX_HAS_GHOST
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
if (matrix_has_ghost_in_row(i))
return true;
}
#endif
return false;
}
inline
bool matrix_is_on(uint8_t row, uint8_t col)
{
return (matrix[row] & (1<<col));
}
inline
#if (MATRIX_COLS <= 8)
uint8_t matrix_get_row(uint8_t row)
#else
uint16_t matrix_get_row(uint8_t row)
#endif
{
return matrix[row];
}
void matrix_print(void)
{
if (!debug_matrix) return;
#if (MATRIX_COLS <= 8)
print("r/c 01234567\n");
#else
print("r/c 0123456789ABCDEF\n");
#endif
for (uint8_t row = 0; row < matrix_rows(); row++) {
phex(row); print(": ");
#if (MATRIX_COLS <= 8)
pbin_reverse(matrix_get_row(row));
#else
pbin_reverse16(matrix_get_row(row));
#endif
#ifdef MATRIX_HAS_GHOST
if (matrix_has_ghost_in_row(row)) {
print(" <ghost");
}
#endif
print("\n");
}
}
uint8_t matrix_key_count(void)
{
uint8_t count = 0;
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
#if (MATRIX_COLS <= 8)
count += bitpop(matrix[i]);
#else
count += bitpop16(matrix[i]);
#endif
}
return count;
}
#ifdef MATRIX_HAS_GHOST
inline
static bool matrix_has_ghost_in_row(uint8_t row)
{
// no ghost exists in case less than 2 keys on
if (((matrix[row] - 1) & matrix[row]) == 0)
return false;
// ghost exists in case same state as other row
for (uint8_t i=0; i < MATRIX_ROWS; i++) {
if (i != row && (matrix[i] & matrix[row]) == matrix[row])
return true;
}
return false;
}
#endif
inline
static void register_key(uint8_t key)
{
uint8_t col, row;
col = key&0x07;
row = (key>>3)&0x0F;
if (key&0x80) {
matrix[row] &= ~(1<<col);
} else {
matrix[row] |= (1<<col);
}
is_modified = true;
}
|
