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
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
|
/*
Copyright 2013 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/>.
*/
#include "host.h"
#include "report.h"
#include "debug.h"
#include "action_util.h"
#include "timer.h"
static inline void add_key_byte(uint8_t code);
static inline void del_key_byte(uint8_t code);
#ifdef NKRO_ENABLE
static inline void add_key_bit(uint8_t code);
static inline void del_key_bit(uint8_t code);
#endif
static uint8_t real_mods = 0;
static uint8_t weak_mods = 0;
#ifdef USB_6KRO_ENABLE
#define RO_ADD(a, b) ((a + b) % KEYBOARD_REPORT_KEYS)
#define RO_SUB(a, b) ((a - b + KEYBOARD_REPORT_KEYS) % KEYBOARD_REPORT_KEYS)
#define RO_INC(a) RO_ADD(a, 1)
#define RO_DEC(a) RO_SUB(a, 1)
static int8_t cb_head = 0;
static int8_t cb_tail = 0;
static int8_t cb_count = 0;
#endif
// TODO: pointer variable is not needed
//report_keyboard_t keyboard_report = {};
report_keyboard_t *keyboard_report = &(report_keyboard_t){};
#ifndef NO_ACTION_ONESHOT
static int8_t oneshot_mods = 0;
#if (defined(ONESHOT_TIMEOUT) && (ONESHOT_TIMEOUT > 0))
static int16_t oneshot_time = 0;
#endif
#endif
void send_keyboard_report(void) {
keyboard_report->mods = real_mods;
keyboard_report->mods |= weak_mods;
#ifndef NO_ACTION_ONESHOT
if (oneshot_mods) {
#if (defined(ONESHOT_TIMEOUT) && (ONESHOT_TIMEOUT > 0))
if (TIMER_DIFF_16(timer_read(), oneshot_time) >= ONESHOT_TIMEOUT) {
dprintf("Oneshot: timeout\n");
clear_oneshot_mods();
}
#endif
keyboard_report->mods |= oneshot_mods;
if (has_anykey()) {
clear_oneshot_mods();
}
}
#endif
host_keyboard_send(keyboard_report);
}
/* key */
void add_key(uint8_t key)
{
#ifdef NKRO_ENABLE
if (keyboard_protocol && keyboard_nkro) {
add_key_bit(key);
return;
}
#endif
add_key_byte(key);
}
void del_key(uint8_t key)
{
#ifdef NKRO_ENABLE
if (keyboard_protocol && keyboard_nkro) {
del_key_bit(key);
return;
}
#endif
del_key_byte(key);
}
void clear_keys(void)
{
// not clear mods
for (int8_t i = 1; i < KEYBOARD_REPORT_SIZE; i++) {
keyboard_report->raw[i] = 0;
}
}
/* modifier */
uint8_t get_mods(void) { return real_mods; }
void add_mods(uint8_t mods) { real_mods |= mods; }
void del_mods(uint8_t mods) { real_mods &= ~mods; }
void set_mods(uint8_t mods) { real_mods = mods; }
void clear_mods(void) { real_mods = 0; }
/* weak modifier */
uint8_t get_weak_mods(void) { return weak_mods; }
void add_weak_mods(uint8_t mods) { weak_mods |= mods; }
void del_weak_mods(uint8_t mods) { weak_mods &= ~mods; }
void set_weak_mods(uint8_t mods) { weak_mods = mods; }
void clear_weak_mods(void) { weak_mods = 0; }
/* Oneshot modifier */
#ifndef NO_ACTION_ONESHOT
void set_oneshot_mods(uint8_t mods)
{
oneshot_mods = mods;
#if (defined(ONESHOT_TIMEOUT) && (ONESHOT_TIMEOUT > 0))
oneshot_time = timer_read();
#endif
}
void clear_oneshot_mods(void)
{
oneshot_mods = 0;
#if (defined(ONESHOT_TIMEOUT) && (ONESHOT_TIMEOUT > 0))
oneshot_time = 0;
#endif
}
#endif
/*
* inspect keyboard state
*/
uint8_t has_anykey(void)
{
uint8_t cnt = 0;
for (uint8_t i = 1; i < KEYBOARD_REPORT_SIZE; i++) {
if (keyboard_report->raw[i])
cnt++;
}
return cnt;
}
uint8_t has_anymod(void)
{
return bitpop(real_mods);
}
uint8_t get_first_key(void)
{
#ifdef NKRO_ENABLE
if (keyboard_protocol && keyboard_nkro) {
uint8_t i = 0;
for (; i < KEYBOARD_REPORT_BITS && !keyboard_report->nkro.bits[i]; i++)
;
return i<<3 | biton(keyboard_report->nkro.bits[i]);
}
#endif
#ifdef USB_6KRO_ENABLE
uint8_t i = cb_head;
do {
if (keyboard_report->keys[i] != 0) {
break;
}
i = RO_INC(i);
} while (i != cb_tail);
return keyboard_report->keys[i];
#else
return keyboard_report->keys[0];
#endif
}
/* local functions */
static inline void add_key_byte(uint8_t code)
{
#ifdef USB_6KRO_ENABLE
int8_t i = cb_head;
int8_t empty = -1;
if (cb_count) {
do {
if (keyboard_report->keys[i] == code) {
return;
}
if (empty == -1 && keyboard_report->keys[i] == 0) {
empty = i;
}
i = RO_INC(i);
} while (i != cb_tail);
if (i == cb_tail) {
if (cb_tail == cb_head) {
// buffer is full
if (empty == -1) {
// pop head when has no empty space
cb_head = RO_INC(cb_head);
cb_count--;
}
else {
// left shift when has empty space
uint8_t offset = 1;
i = RO_INC(empty);
do {
if (keyboard_report->keys[i] != 0) {
keyboard_report->keys[empty] = keyboard_report->keys[i];
keyboard_report->keys[i] = 0;
empty = RO_INC(empty);
}
else {
offset++;
}
i = RO_INC(i);
} while (i != cb_tail);
cb_tail = RO_SUB(cb_tail, offset);
}
}
}
}
// add to tail
keyboard_report->keys[cb_tail] = code;
cb_tail = RO_INC(cb_tail);
cb_count++;
#else
int8_t i = 0;
int8_t empty = -1;
for (; i < KEYBOARD_REPORT_KEYS; i++) {
if (keyboard_report->keys[i] == code) {
break;
}
if (empty == -1 && keyboard_report->keys[i] == 0) {
empty = i;
}
}
if (i == KEYBOARD_REPORT_KEYS) {
if (empty != -1) {
keyboard_report->keys[empty] = code;
}
}
#endif
}
static inline void del_key_byte(uint8_t code)
{
#ifdef USB_6KRO_ENABLE
uint8_t i = cb_head;
if (cb_count) {
do {
if (keyboard_report->keys[i] == code) {
keyboard_report->keys[i] = 0;
cb_count--;
if (cb_count == 0) {
// reset head and tail
cb_tail = cb_head = 0;
}
if (i == RO_DEC(cb_tail)) {
// left shift when next to tail
do {
cb_tail = RO_DEC(cb_tail);
if (keyboard_report->keys[RO_DEC(cb_tail)] != 0) {
break;
}
} while (cb_tail != cb_head);
}
break;
}
i = RO_INC(i);
} while (i != cb_tail);
}
#else
for (uint8_t i = 0; i < KEYBOARD_REPORT_KEYS; i++) {
if (keyboard_report->keys[i] == code) {
keyboard_report->keys[i] = 0;
}
}
#endif
}
#ifdef NKRO_ENABLE
static inline void add_key_bit(uint8_t code)
{
if ((code>>3) < KEYBOARD_REPORT_BITS) {
keyboard_report->nkro.bits[code>>3] |= 1<<(code&7);
} else {
dprintf("add_key_bit: can't add: %02X\n", code);
}
}
static inline void del_key_bit(uint8_t code)
{
if ((code>>3) < KEYBOARD_REPORT_BITS) {
keyboard_report->nkro.bits[code>>3] &= ~(1<<(code&7));
} else {
dprintf("del_key_bit: can't del: %02X\n", code);
}
}
#endif
|
