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1 | /* |
2 | Copyright 2017 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 <util/delay.h> |
24 | #include "print.h" |
25 | #include "debug.h" |
26 | #include "util.h" |
27 | #include "timer.h" |
28 | #include "matrix.h" |
29 | #include "led.h" |
30 | #include "fc980c.h" |
31 | |
32 | |
33 | static uint32_t matrix_last_modified = 0; |
34 | |
35 | // matrix state buffer(1:on, 0:off) |
36 | static matrix_row_t *matrix; |
37 | static matrix_row_t *matrix_prev; |
38 | static matrix_row_t _matrix0[MATRIX_ROWS]; |
39 | static matrix_row_t _matrix1[MATRIX_ROWS]; |
40 | |
41 | |
42 | void matrix_init(void) |
43 | { |
44 | #if 0 |
45 | debug_enable = true; |
46 | debug_keyboard = true; |
47 | debug_matrix = true; |
48 | #endif |
49 | debug_enable = true; |
50 | debug_matrix = true; |
51 | |
52 | KEY_INIT(); |
53 | |
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54 | // LEDs on NumLock, CapsLock and ScrollLock(PB4, PB5, PB6) |
55 | DDRB |= (1<<4) | (1<<5) | (1<<6); |
56 | PORTB |= (1<<4) | (1<<5) | (1<<6); |
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57 | |
58 | // initialize matrix state: all keys off |
59 | for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix0[i] = 0x00; |
60 | for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix1[i] = 0x00; |
61 | matrix = _matrix0; |
62 | matrix_prev = _matrix1; |
63 | } |
64 | |
65 | uint8_t matrix_scan(void) |
66 | { |
67 | matrix_row_t *tmp; |
68 | |
69 | tmp = matrix_prev; |
70 | matrix_prev = matrix; |
71 | matrix = tmp; |
72 | |
73 | uint8_t row, col; |
74 | for (col = 0; col < MATRIX_COLS; col++) { |
75 | SET_COL(col); |
76 | for (row = 0; row < MATRIX_ROWS; row++) { |
77 | //KEY_SELECT(row, col); |
78 | SET_ROW(row); |
79 | _delay_us(2); |
80 | |
81 | // Not sure this is needed. This just emulates HHKB controller's behaviour. |
82 | if (matrix_prev[row] & (1<<col)) { |
83 | KEY_HYS_ON(); |
84 | } |
85 | _delay_us(10); |
86 | |
87 | // NOTE: KEY_STATE is valid only in 20us after KEY_ENABLE. |
88 | // If V-USB interrupts in this section we could lose 40us or so |
89 | // and would read invalid value from KEY_STATE. |
90 | uint8_t last = TIMER_RAW; |
91 | |
92 | KEY_ENABLE(); |
93 | |
94 | // Wait for KEY_STATE outputs its value. |
95 | _delay_us(2); |
96 | |
97 | if (KEY_STATE()) { |
98 | matrix[row] &= ~(1<<col); |
99 | } else { |
100 | matrix[row] |= (1<<col); |
101 | } |
102 | |
103 | // Ignore if this code region execution time elapses more than 20us. |
104 | // MEMO: 20[us] * (TIMER_RAW_FREQ / 1000000)[count per us] |
105 | // MEMO: then change above using this rule: a/(b/c) = a*1/(b/c) = a*(c/b) |
106 | if (TIMER_DIFF_RAW(TIMER_RAW, last) > 20/(1000000/TIMER_RAW_FREQ)) { |
107 | matrix[row] = matrix_prev[row]; |
108 | } |
109 | |
110 | _delay_us(5); |
111 | KEY_HYS_OFF(); |
112 | KEY_UNABLE(); |
113 | |
114 | // NOTE: KEY_STATE keep its state in 20us after KEY_ENABLE. |
115 | // This takes 25us or more to make sure KEY_STATE returns to idle state. |
116 | _delay_us(75); |
117 | } |
118 | if (matrix[row] ^ matrix_prev[row]) { |
119 | matrix_last_modified = timer_read32(); |
120 | } |
121 | } |
122 | return 1; |
123 | } |
124 | |
125 | inline |
126 | matrix_row_t matrix_get_row(uint8_t row) |
127 | { |
128 | return matrix[row]; |
129 | } |
130 | |
131 | void led_set(uint8_t usb_led) |
132 | { |
133 | if (usb_led & (1<<USB_LED_NUM_LOCK)) { |
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134 | PORTB |= (1<<4); |
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135 | } else { |
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136 | PORTB &= ~(1<<4); |
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137 | } |
138 | if (usb_led & (1<<USB_LED_CAPS_LOCK)) { |
139 | PORTB |= (1<<5); |
140 | } else { |
141 | PORTB &= ~(1<<5); |
142 | } |
143 | if (usb_led & (1<<USB_LED_SCROLL_LOCK)) { |
144 | PORTB |= (1<<6); |
145 | } else { |
146 | PORTB &= ~(1<<6); |
147 | } |
148 | } |
149 | |
150 | |
151 | #ifdef UNIMAP_ENABLE |
152 | #include <avr/pgmspace.h> |
153 | #include "unimap.h" |
154 | |
155 | const uint8_t PROGMEM unimap_trans[MATRIX_ROWS][MATRIX_COLS] = { |
156 | { UNIMAP_LEFT, UNIMAP_RCTL, UNIMAP_RALT, UNIMAP_NO , UNIMAP_DOWN, UNIMAP_PDOT, UNIMAP_RGHT, UNIMAP_P0 , |
157 | UNIMAP_X , UNIMAP_LGUI, UNIMAP_GRV , UNIMAP_V , UNIMAP_NO , UNIMAP_ESC , UNIMAP_M , UNIMAP_SPC }, |
158 | { UNIMAP_RGUI, UNIMAP_DOT , UNIMAP_NO , UNIMAP_NO , UNIMAP_P1 , UNIMAP_PENT, UNIMAP_P2 , UNIMAP_P3 , |
159 | UNIMAP_Z , UNIMAP_LALT, UNIMAP_RCTL, UNIMAP_C , UNIMAP_K , UNIMAP_NO , UNIMAP_N , UNIMAP_B }, |
160 | { UNIMAP_QUOT, UNIMAP_SLSH, UNIMAP_COMM, UNIMAP_NO , UNIMAP_P4 , UNIMAP_PPLS, UNIMAP_P5 , UNIMAP_P6 , |
161 | UNIMAP_D , UNIMAP_A , UNIMAP_LSFT, UNIMAP_F , UNIMAP_J , UNIMAP_F1 , UNIMAP_H , UNIMAP_G }, |
162 | { UNIMAP_RSFT, UNIMAP_SCLN, UNIMAP_L , UNIMAP_RBRC, UNIMAP_UP , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , |
163 | UNIMAP_S , UNIMAP_Q , UNIMAP_CAPS, UNIMAP_R , UNIMAP_I , UNIMAP_F3 , UNIMAP_U , UNIMAP_T }, |
164 | { UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , |
165 | UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO }, |
166 | { UNIMAP_EQL , UNIMAP_MINS, UNIMAP_0 , UNIMAP_BSLS, UNIMAP_NLCK, UNIMAP_BSPC, UNIMAP_PSLS, UNIMAP_PAST, |
167 | UNIMAP_3 , UNIMAP_2 , UNIMAP_NO , UNIMAP_4 , UNIMAP_9 , UNIMAP_F2 , UNIMAP_7 , UNIMAP_6 }, |
168 | { UNIMAP_LBRC, UNIMAP_P , UNIMAP_O , UNIMAP_ENT , UNIMAP_P7 , UNIMAP_PMNS, UNIMAP_P8 , UNIMAP_P9 , |
169 | UNIMAP_W , UNIMAP_1 , UNIMAP_TAB , UNIMAP_E , UNIMAP_8 , UNIMAP_F4 , UNIMAP_Y , UNIMAP_5 }, |
170 | { UNIMAP_F11 , UNIMAP_F10 , UNIMAP_F9 , UNIMAP_F12 , UNIMAP_DEL , UNIMAP_PGDN, UNIMAP_INS , UNIMAP_PGUP, |
171 | UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_F8 , UNIMAP_F5 , UNIMAP_F7 , UNIMAP_F6 } |
172 | |
173 | }; |
174 | #endif |