f64ad8072dbb1bf82c283684ab962ae5f1e29e4c
[tmk_keyboard.git] / keyboard / fc980c / fc980c.c
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(PD7, PB5, PB6)
55 DDRD |= (1<<7);
56 PORTD |= (1<<7);
57 DDRB |= (1<<5) | (1<<6);
58 PORTB |= (1<<5) | (1<<6);
59
60 // initialize matrix state: all keys off
61 for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix0[i] = 0x00;
62 for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix1[i] = 0x00;
63 matrix = _matrix0;
64 matrix_prev = _matrix1;
65 }
66
67 uint8_t matrix_scan(void)
68 {
69 matrix_row_t *tmp;
70
71 tmp = matrix_prev;
72 matrix_prev = matrix;
73 matrix = tmp;
74
75 uint8_t row, col;
76 for (col = 0; col < MATRIX_COLS; col++) {
77 SET_COL(col);
78 for (row = 0; row < MATRIX_ROWS; row++) {
79 //KEY_SELECT(row, col);
80 SET_ROW(row);
81 _delay_us(2);
82
83 // Not sure this is needed. This just emulates HHKB controller's behaviour.
84 if (matrix_prev[row] & (1<<col)) {
85 KEY_HYS_ON();
86 }
87 _delay_us(10);
88
89 // NOTE: KEY_STATE is valid only in 20us after KEY_ENABLE.
90 // If V-USB interrupts in this section we could lose 40us or so
91 // and would read invalid value from KEY_STATE.
92 uint8_t last = TIMER_RAW;
93
94 KEY_ENABLE();
95
96 // Wait for KEY_STATE outputs its value.
97 _delay_us(2);
98
99 if (KEY_STATE()) {
100 matrix[row] &= ~(1<<col);
101 } else {
102 matrix[row] |= (1<<col);
103 }
104
105 // Ignore if this code region execution time elapses more than 20us.
106 // MEMO: 20[us] * (TIMER_RAW_FREQ / 1000000)[count per us]
107 // MEMO: then change above using this rule: a/(b/c) = a*1/(b/c) = a*(c/b)
108 if (TIMER_DIFF_RAW(TIMER_RAW, last) > 20/(1000000/TIMER_RAW_FREQ)) {
109 matrix[row] = matrix_prev[row];
110 }
111
112 _delay_us(5);
113 KEY_HYS_OFF();
114 KEY_UNABLE();
115
116 // NOTE: KEY_STATE keep its state in 20us after KEY_ENABLE.
117 // This takes 25us or more to make sure KEY_STATE returns to idle state.
118 _delay_us(75);
119 }
120 if (matrix[row] ^ matrix_prev[row]) {
121 matrix_last_modified = timer_read32();
122 }
123 }
124 return 1;
125 }
126
127 inline
128 matrix_row_t matrix_get_row(uint8_t row)
129 {
130 return matrix[row];
131 }
132
133 void led_set(uint8_t usb_led)
134 {
135 if (usb_led & (1<<USB_LED_NUM_LOCK)) {
136 PORTD |= (1<<7);
137 } else {
138 PORTD &= ~(1<<7);
139 }
140 if (usb_led & (1<<USB_LED_CAPS_LOCK)) {
141 PORTB |= (1<<5);
142 } else {
143 PORTB &= ~(1<<5);
144 }
145 if (usb_led & (1<<USB_LED_SCROLL_LOCK)) {
146 PORTB |= (1<<6);
147 } else {
148 PORTB &= ~(1<<6);
149 }
150 }
151
152
153 #ifdef UNIMAP_ENABLE
154 #include <avr/pgmspace.h>
155 #include "unimap.h"
156
157 const uint8_t PROGMEM unimap_trans[MATRIX_ROWS][MATRIX_COLS] = {
158 { UNIMAP_LEFT, UNIMAP_RCTL, UNIMAP_RALT, UNIMAP_NO , UNIMAP_DOWN, UNIMAP_PDOT, UNIMAP_RGHT, UNIMAP_P0 ,
159 UNIMAP_X , UNIMAP_LGUI, UNIMAP_GRV , UNIMAP_V , UNIMAP_NO , UNIMAP_ESC , UNIMAP_M , UNIMAP_SPC },
160 { UNIMAP_RGUI, UNIMAP_DOT , UNIMAP_NO , UNIMAP_NO , UNIMAP_P1 , UNIMAP_PENT, UNIMAP_P2 , UNIMAP_P3 ,
161 UNIMAP_Z , UNIMAP_LALT, UNIMAP_RCTL, UNIMAP_C , UNIMAP_K , UNIMAP_NO , UNIMAP_N , UNIMAP_B },
162 { UNIMAP_QUOT, UNIMAP_SLSH, UNIMAP_COMM, UNIMAP_NO , UNIMAP_P4 , UNIMAP_PPLS, UNIMAP_P5 , UNIMAP_P6 ,
163 UNIMAP_D , UNIMAP_A , UNIMAP_LSFT, UNIMAP_F , UNIMAP_J , UNIMAP_F1 , UNIMAP_H , UNIMAP_G },
164 { UNIMAP_RSFT, UNIMAP_SCLN, UNIMAP_L , UNIMAP_RBRC, UNIMAP_UP , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO ,
165 UNIMAP_S , UNIMAP_Q , UNIMAP_CAPS, UNIMAP_R , UNIMAP_I , UNIMAP_F3 , UNIMAP_U , UNIMAP_T },
166 { UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO ,
167 UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO },
168 { UNIMAP_EQL , UNIMAP_MINS, UNIMAP_0 , UNIMAP_BSLS, UNIMAP_NLCK, UNIMAP_BSPC, UNIMAP_PSLS, UNIMAP_PAST,
169 UNIMAP_3 , UNIMAP_2 , UNIMAP_NO , UNIMAP_4 , UNIMAP_9 , UNIMAP_F2 , UNIMAP_7 , UNIMAP_6 },
170 { UNIMAP_LBRC, UNIMAP_P , UNIMAP_O , UNIMAP_ENT , UNIMAP_P7 , UNIMAP_PMNS, UNIMAP_P8 , UNIMAP_P9 ,
171 UNIMAP_W , UNIMAP_1 , UNIMAP_TAB , UNIMAP_E , UNIMAP_8 , UNIMAP_F4 , UNIMAP_Y , UNIMAP_5 },
172 { UNIMAP_F11 , UNIMAP_F10 , UNIMAP_F9 , UNIMAP_F12 , UNIMAP_DEL , UNIMAP_PGDN, UNIMAP_INS , UNIMAP_PGUP,
173 UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_F8 , UNIMAP_F5 , UNIMAP_F7 , UNIMAP_F6 }
174
175 };
176 #endif
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