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Diffstat (limited to 'converter/adb_usb/matrix.c')
-rw-r--r--converter/adb_usb/matrix.c296
1 files changed, 0 insertions, 296 deletions
diff --git a/converter/adb_usb/matrix.c b/converter/adb_usb/matrix.c
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--- a/converter/adb_usb/matrix.c
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1/*
2Copyright 2011 Jun Wako <wakojun@gmail.com>
3
4This program is free software: you can redistribute it and/or modify
5it under the terms of the GNU General Public License as published by
6the Free Software Foundation, either version 2 of the License, or
7(at your option) any later version.
8
9This program is distributed in the hope that it will be useful,
10but WITHOUT ANY WARRANTY; without even the implied warranty of
11MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12GNU General Public License for more details.
13
14You should have received a copy of the GNU General Public License
15along 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 "adb.h"
29#include "matrix.h"
30#include "report.h"
31#include "host.h"
32
33
34#if (MATRIX_COLS > 16)
35# error "MATRIX_COLS must not exceed 16"
36#endif
37#if (MATRIX_ROWS > 255)
38# error "MATRIX_ROWS must not exceed 255"
39#endif
40
41
42static bool is_modified = false;
43static report_mouse_t mouse_report = {};
44
45// matrix state buffer(1:on, 0:off)
46#if (MATRIX_COLS <= 8)
47static uint8_t matrix[MATRIX_ROWS];
48#else
49static uint16_t matrix[MATRIX_ROWS];
50#endif
51
52#ifdef MATRIX_HAS_GHOST
53static bool matrix_has_ghost_in_row(uint8_t row);
54#endif
55static void register_key(uint8_t key);
56
57
58inline
59uint8_t matrix_rows(void)
60{
61 return MATRIX_ROWS;
62}
63
64inline
65uint8_t matrix_cols(void)
66{
67 return MATRIX_COLS;
68}
69
70void matrix_init(void)
71{
72 adb_host_init();
73 // wait for keyboard to boot up and receive command
74 _delay_ms(1000);
75 // Enable keyboard left/right modifier distinction
76 // Addr:Keyboard(0010), Cmd:Listen(10), Register3(11)
77 // upper byte: reserved bits 0000, device address 0010
78 // lower byte: device handler 00000011
79 adb_host_listen(0x2B,0x02,0x03);
80
81 // initialize matrix state: all keys off
82 for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;
83
84 debug_enable = true;
85 //debug_matrix = true;
86 //debug_keyboard = true;
87 //debug_mouse = true;
88 print("debug enabled.\n");
89 return;
90}
91
92#ifdef ADB_MOUSE_ENABLE
93
94#ifdef MAX
95#undef MAX
96#endif
97#define MAX(X, Y) ((X) > (Y) ? (X) : (Y))
98
99void adb_mouse_task(void)
100{
101 uint16_t codes;
102 int16_t x, y;
103 static int8_t mouseacc;
104 _delay_ms(12); // delay for preventing overload of poor ADB keyboard controller
105 codes = adb_host_mouse_recv();
106 // If nothing received reset mouse acceleration, and quit.
107 if (!codes) {
108 mouseacc = 1;
109 return;
110 };
111 // Bit sixteen is button.
112 if (~codes & (1 << 15))
113 mouse_report.buttons |= MOUSE_BTN1;
114 if (codes & (1 << 15))
115 mouse_report.buttons &= ~MOUSE_BTN1;
116 // lower seven bits are movement, as signed int_7.
117 // low byte is X-axis, high byte is Y.
118 y = (codes>>8 & 0x3F);
119 x = (codes>>0 & 0x3F);
120 // bit seven and fifteen is negative
121 // usb does not use int_8, but int_7 (measuring distance) with sign-bit.
122 if (codes & (1 << 6))
123 x = (x-0x40);
124 if (codes & (1 << 14))
125 y = (y-0x40);
126 // Accelerate mouse. (They weren't meant to be used on screens larger than 320x200).
127 x *= mouseacc;
128 y *= mouseacc;
129 // Cap our two bytes per axis to one byte.
130 // Easier with a MIN-function, but since -MAX(-a,-b) = MIN(a,b)...
131 // I.E. MIN(MAX(x,-127),127) = -MAX(-MAX(x, -127), -127) = MIN(-MIN(-x,127),127)
132 mouse_report.x = -MAX(-MAX(x, -127), -127);
133 mouse_report.y = -MAX(-MAX(y, -127), -127);
134 if (debug_mouse) {
135 print("adb_host_mouse_recv: "); print_bin16(codes); print("\n");
136 print("adb_mouse raw: [");
137 phex(mouseacc); print(" ");
138 phex(mouse_report.buttons); print("|");
139 print_decs(mouse_report.x); print(" ");
140 print_decs(mouse_report.y); print("]\n");
141 }
142 // Send result by usb.
143 host_mouse_send(&mouse_report);
144 // increase acceleration of mouse
145 mouseacc += ( mouseacc < ADB_MOUSE_MAXACC ? 1 : 0 );
146 return;
147}
148#endif
149
150uint8_t matrix_scan(void)
151{
152 /* extra_key is volatile and more convoluted than necessary because gcc refused
153 to generate valid code otherwise. Making extra_key uint8_t and constructing codes
154 here via codes = extra_key<<8 | 0xFF; would consistently fail to even LOAD
155 extra_key from memory, and leave garbage in the high byte of codes. I tried
156 dozens of code variations and it kept generating broken assembly output. So
157 beware if attempting to make extra_key code more logical and efficient. */
158 static volatile uint16_t extra_key = 0xFFFF;
159 uint16_t codes;
160 uint8_t key0, key1;
161
162 is_modified = false;
163
164 codes = extra_key;
165 extra_key = 0xFFFF;
166
167 if ( codes == 0xFFFF )
168 {
169 _delay_ms(12); // delay for preventing overload of poor ADB keyboard controller
170 codes = adb_host_kbd_recv();
171 }
172 key0 = codes>>8;
173 key1 = codes&0xFF;
174
175 if (debug_matrix && codes) {
176 print("adb_host_kbd_recv: "); phex16(codes); print("\n");
177 }
178
179 if (codes == 0) { // no keys
180 return 0;
181 } else if (codes == 0x7F7F) { // power key press
182 register_key(0x7F);
183 } else if (codes == 0xFFFF) { // power key release
184 register_key(0xFF);
185 } else if (key0 == 0xFF) { // error
186 xprintf("adb_host_kbd_recv: ERROR(%d)\n", codes);
187 return key1;
188 } else {
189 register_key(key0);
190 if (key1 != 0xFF) // key1 is 0xFF when no second key.
191 extra_key = key1<<8 | 0xFF; // process in a separate call
192 }
193
194 return 1;
195}
196
197bool matrix_is_modified(void)
198{
199 return is_modified;
200}
201
202inline
203bool matrix_has_ghost(void)
204{
205#ifdef MATRIX_HAS_GHOST
206 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
207 if (matrix_has_ghost_in_row(i))
208 return true;
209 }
210#endif
211 return false;
212}
213
214inline
215bool matrix_is_on(uint8_t row, uint8_t col)
216{
217 return (matrix[row] & (1<<col));
218}
219
220inline
221#if (MATRIX_COLS <= 8)
222uint8_t matrix_get_row(uint8_t row)
223#else
224uint16_t matrix_get_row(uint8_t row)
225#endif
226{
227 return matrix[row];
228}
229
230void matrix_print(void)
231{
232 if (!debug_matrix) return;
233#if (MATRIX_COLS <= 8)
234 print("r/c 01234567\n");
235#else
236 print("r/c 0123456789ABCDEF\n");
237#endif
238 for (uint8_t row = 0; row < matrix_rows(); row++) {
239 phex(row); print(": ");
240#if (MATRIX_COLS <= 8)
241 pbin_reverse(matrix_get_row(row));
242#else
243 pbin_reverse16(matrix_get_row(row));
244#endif
245#ifdef MATRIX_HAS_GHOST
246 if (matrix_has_ghost_in_row(row)) {
247 print(" <ghost");
248 }
249#endif
250 print("\n");
251 }
252}
253
254uint8_t matrix_key_count(void)
255{
256 uint8_t count = 0;
257 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
258#if (MATRIX_COLS <= 8)
259 count += bitpop(matrix[i]);
260#else
261 count += bitpop16(matrix[i]);
262#endif
263 }
264 return count;
265}
266
267#ifdef MATRIX_HAS_GHOST
268inline
269static bool matrix_has_ghost_in_row(uint8_t row)
270{
271 // no ghost exists in case less than 2 keys on
272 if (((matrix[row] - 1) & matrix[row]) == 0)
273 return false;
274
275 // ghost exists in case same state as other row
276 for (uint8_t i=0; i < MATRIX_ROWS; i++) {
277 if (i != row && (matrix[i] & matrix[row]) == matrix[row])
278 return true;
279 }
280 return false;
281}
282#endif
283
284inline
285static void register_key(uint8_t key)
286{
287 uint8_t col, row;
288 col = key&0x07;
289 row = (key>>3)&0x0F;
290 if (key&0x80) {
291 matrix[row] &= ~(1<<col);
292 } else {
293 matrix[row] |= (1<<col);
294 }
295 is_modified = true;
296}