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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 | ||
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); | |
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)) { | |
134 | PORTB |= (1<<4); | |
135 | } else { | |
136 | PORTB &= ~(1<<4); | |
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 |