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1 | /* | |
2 | Copyright 2011 Jun Wako <wakojun@gmail.com> | |
3 | Copyright 2016 Ethan Apodaca <papodaca@gmail.com> | |
4 | ||
5 | This program is free software: you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation, either version 2 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. | |
17 | */ | |
18 | ||
19 | #include <stdint.h> | |
20 | #include <stdbool.h> | |
21 | #include "action.h" | |
22 | #include "print.h" | |
23 | #include "util.h" | |
24 | #include "debug.h" | |
25 | #include "xt.h" | |
26 | #include "matrix.h" | |
27 | ||
28 | ||
29 | static void matrix_make(uint8_t code); | |
30 | static void matrix_break(uint8_t code); | |
31 | ||
32 | static uint8_t matrix[MATRIX_ROWS]; | |
33 | #define ROW(code) (code>>3) | |
34 | #define COL(code) (code&0x07) | |
35 | ||
36 | // matrix positions for exceptional keys | |
37 | #define PRINT_SCREEN (0x7C) | |
38 | #define PAUSE (0x7D) | |
39 | ||
40 | ||
41 | void matrix_init(void) | |
42 | { | |
43 | debug_enable = true; | |
44 | xt_host_init(); | |
45 | ||
46 | // initialize matrix state: all keys off | |
47 | for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00; | |
48 | ||
49 | return; | |
50 | } | |
51 | ||
52 | static uint8_t move_codes(uint8_t code) { | |
53 | switch(code) { | |
54 | case 0x10: | |
55 | code += 0x5E; | |
56 | break; | |
57 | case 0x19: | |
58 | code += 0x41; | |
59 | break; | |
60 | case 0x1C: | |
61 | case 0x1D: | |
62 | code += 0x38; | |
63 | break; | |
64 | case 0x20: | |
65 | case 0x21: | |
66 | case 0x22: | |
67 | case 0x24: | |
68 | code += 0x40; | |
69 | break; | |
70 | case 0x2E: | |
71 | case 0x30: | |
72 | case 0x32: | |
73 | code += 0x44; | |
74 | break; | |
75 | case 0x35: | |
76 | case 0x38: | |
77 | code += 0x21; | |
78 | break; | |
79 | case 0x47: | |
80 | case 0x48: | |
81 | case 0x49: | |
82 | case 0x4B: | |
83 | case 0x4D: | |
84 | case 0x4F: | |
85 | case 0x50: | |
86 | case 0x51: | |
87 | case 0x52: | |
88 | case 0x53: | |
89 | code += 0x28; | |
90 | break; | |
91 | } | |
92 | return code; | |
93 | } | |
94 | ||
95 | uint8_t matrix_scan(void) | |
96 | { | |
97 | ||
98 | // scan code reading states | |
99 | static enum { | |
100 | INIT, | |
101 | E0, | |
102 | E0_2A, | |
103 | E0_2A_E0, | |
104 | E0_B7, | |
105 | E0_B7_E0, | |
106 | ||
107 | // print screen | |
108 | E1, | |
109 | E1_1D, | |
110 | E1_1D_45, | |
111 | E1_1D_45_E1, | |
112 | E1_1D_45_E1_9D, | |
113 | // pause | |
114 | } state = INIT; | |
115 | ||
116 | ||
117 | // 'pseudo break code' hack | |
118 | if (matrix_is_on(ROW(PAUSE), COL(PAUSE))) { | |
119 | matrix_break(PAUSE); | |
120 | } | |
121 | ||
122 | uint8_t code = xt_host_recv(); | |
123 | switch (state) { | |
124 | case INIT: | |
125 | switch (code) { | |
126 | case 0xE0: | |
127 | state = E0; | |
128 | break; | |
129 | case 0xE1: | |
130 | state = E1; | |
131 | break; | |
132 | default: // normal key make | |
133 | if (code < 0x80 && code != 0x00) { | |
134 | xprintf("make: %X\r\n", code); | |
135 | matrix_make(code); | |
136 | } else if (code > 0x80 && code < 0xFF && code != 0x00) { | |
137 | xprintf("break %X\r\n", code); | |
138 | matrix_break(code - 0x80); | |
139 | } | |
140 | state = INIT; | |
141 | } | |
142 | break; | |
143 | case E0: // E0-Prefixed | |
144 | switch (code) { //move these codes to unused places on the matrix | |
145 | case 0x2A: | |
146 | state = E0_2A; | |
147 | break; | |
148 | case 0xB7: | |
149 | state = E0_B7; | |
150 | break; | |
151 | default: | |
152 | if (code < 0x80 && code != 0x00) { | |
153 | matrix_make(move_codes(code)); | |
154 | } else if (code > 0x80 && code < 0xFF && code != 0x00) { | |
155 | matrix_break(move_codes(code - 0x80)); | |
156 | } | |
157 | state = INIT; | |
158 | } | |
159 | break; | |
160 | case E0_2A: | |
161 | if(code == 0xE0) | |
162 | state = E0_2A_E0; | |
163 | else | |
164 | state = INIT; | |
165 | break; | |
166 | case E0_2A_E0: | |
167 | if(code == 0x37) | |
168 | matrix_make(PRINT_SCREEN); | |
169 | else | |
170 | state = INIT; | |
171 | break; | |
172 | case E0_B7: | |
173 | if(code == 0xE0) | |
174 | state = E0_B7; | |
175 | else | |
176 | state = INIT; | |
177 | break; | |
178 | case E0_B7_E0: | |
179 | if(code == 0xAA) | |
180 | matrix_break(PRINT_SCREEN); | |
181 | else | |
182 | state = INIT; | |
183 | break; | |
184 | case E1: | |
185 | if (code == 0x1D) | |
186 | state = E1_1D; | |
187 | else | |
188 | state = INIT; | |
189 | break; | |
190 | case E1_1D: | |
191 | if(code == 0x45) | |
192 | state = E1_1D_45; | |
193 | else | |
194 | state = INIT; | |
195 | break; | |
196 | case E1_1D_45: | |
197 | if(code == 0xE1) | |
198 | state = E1_1D_45_E1; | |
199 | else | |
200 | state = INIT; | |
201 | break; | |
202 | case E1_1D_45_E1: | |
203 | if(code == 0x9D) | |
204 | state = E1_1D_45_E1_9D; | |
205 | else | |
206 | state = INIT; | |
207 | break; | |
208 | case E1_1D_45_E1_9D: | |
209 | if(code == 0xC5) | |
210 | matrix_make(PAUSE); | |
211 | else | |
212 | state = INIT; | |
213 | break; | |
214 | default: | |
215 | state = INIT; | |
216 | } | |
217 | return 1; | |
218 | } | |
219 | ||
220 | inline | |
221 | uint8_t matrix_get_row(uint8_t row) | |
222 | { | |
223 | return matrix[row]; | |
224 | } | |
225 | ||
226 | inline | |
227 | static void matrix_make(uint8_t code) | |
228 | { | |
229 | if (!matrix_is_on(ROW(code), COL(code))) { | |
230 | matrix[ROW(code)] |= 1<<COL(code); | |
231 | } | |
232 | } | |
233 | ||
234 | inline | |
235 | static void matrix_break(uint8_t code) | |
236 | { | |
237 | if (matrix_is_on(ROW(code), COL(code))) { | |
238 | matrix[ROW(code)] &= ~(1<<COL(code)); | |
239 | } | |
240 | } | |
241 | ||
242 | void matrix_clear(void) | |
243 | { | |
244 | for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00; | |
245 | } |