2 Copyright 2017 Jun Wako <wakojun@gmail.com>
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.
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.
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/>.
23 #include <util/delay.h>
33 static uint32_t matrix_last_modified = 0;
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];
42 void matrix_init(void)
46 debug_keyboard = true;
52 // LEDs on NumLock, CapsLock and ScrollLock(PB4, PB5, PB6)
53 DDRB |= (1<<4) | (1<<5) | (1<<6);
54 PORTB &= ~((1<<4) | (1<<5) | (1<<6));
56 // initialize matrix state: all keys off
57 for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix0[i] = 0x00;
58 for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix1[i] = 0x00;
60 matrix_prev = _matrix1;
63 uint8_t matrix_scan(void)
72 for (col = 0; col < MATRIX_COLS; col++) {
74 for (row = 0; row < MATRIX_ROWS; row++) {
75 //KEY_SELECT(row, col);
79 // Not sure this is needed. This just emulates HHKB controller's behaviour.
80 if (matrix_prev[row] & (1<<col)) {
85 // NOTE: KEY_STATE is valid only in 20us after KEY_ENABLE.
86 // If V-USB interrupts in this section we could lose 40us or so
87 // and would read invalid value from KEY_STATE.
88 uint8_t last = TIMER_RAW;
92 // Wait for KEY_STATE outputs its value.
96 matrix[row] &= ~(1<<col);
98 matrix[row] |= (1<<col);
101 // Ignore if this code region execution time elapses more than 20us.
102 // MEMO: 20[us] * (TIMER_RAW_FREQ / 1000000)[count per us]
103 // MEMO: then change above using this rule: a/(b/c) = a*1/(b/c) = a*(c/b)
104 if (TIMER_DIFF_RAW(TIMER_RAW, last) > 20/(1000000/TIMER_RAW_FREQ)) {
105 matrix[row] = matrix_prev[row];
112 // NOTE: KEY_STATE keep its state in 20us after KEY_ENABLE.
113 // This takes 25us or more to make sure KEY_STATE returns to idle state.
116 if (matrix[row] ^ matrix_prev[row]) {
117 matrix_last_modified = timer_read32();
124 matrix_row_t matrix_get_row(uint8_t row)
129 void led_set(uint8_t usb_led)
131 if (usb_led & (1<<USB_LED_NUM_LOCK)) {
136 if (usb_led & (1<<USB_LED_CAPS_LOCK)) {
141 if (usb_led & (1<<USB_LED_SCROLL_LOCK)) {
150 #include <avr/pgmspace.h>
153 const uint8_t PROGMEM unimap_trans[MATRIX_ROWS][MATRIX_COLS] = {
154 { UNIMAP_LEFT, UNIMAP_RCTL, UNIMAP_RALT, UNIMAP_NO , UNIMAP_DOWN, UNIMAP_PDOT, UNIMAP_RGHT, UNIMAP_P0 ,
155 UNIMAP_X , UNIMAP_LGUI, UNIMAP_GRV , UNIMAP_V , UNIMAP_NO , UNIMAP_ESC , UNIMAP_M , UNIMAP_SPC },
156 { UNIMAP_RGUI, UNIMAP_DOT , UNIMAP_NO , UNIMAP_NO , UNIMAP_P1 , UNIMAP_PENT, UNIMAP_P2 , UNIMAP_P3 ,
157 UNIMAP_Z , UNIMAP_LALT, UNIMAP_LCTL, UNIMAP_C , UNIMAP_K , UNIMAP_NO , UNIMAP_N , UNIMAP_B },
158 { UNIMAP_QUOT, UNIMAP_SLSH, UNIMAP_COMM, UNIMAP_NO , UNIMAP_P4 , UNIMAP_PPLS, UNIMAP_P5 , UNIMAP_P6 ,
159 UNIMAP_D , UNIMAP_A , UNIMAP_LSFT, UNIMAP_F , UNIMAP_J , UNIMAP_F1 , UNIMAP_H , UNIMAP_G },
160 { UNIMAP_RSFT, UNIMAP_SCLN, UNIMAP_L , UNIMAP_RBRC, UNIMAP_UP , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO ,
161 UNIMAP_S , UNIMAP_Q , UNIMAP_CAPS, UNIMAP_R , UNIMAP_I , UNIMAP_F3 , UNIMAP_U , UNIMAP_T },
162 { UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO ,
163 UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO },
164 { UNIMAP_EQL , UNIMAP_MINS, UNIMAP_0 , UNIMAP_BSLS, UNIMAP_NLCK, UNIMAP_BSPC, UNIMAP_PSLS, UNIMAP_PAST,
165 UNIMAP_3 , UNIMAP_2 , UNIMAP_NO , UNIMAP_4 , UNIMAP_9 , UNIMAP_F2 , UNIMAP_7 , UNIMAP_6 },
166 { UNIMAP_LBRC, UNIMAP_P , UNIMAP_O , UNIMAP_ENT , UNIMAP_P7 , UNIMAP_PMNS, UNIMAP_P8 , UNIMAP_P9 ,
167 UNIMAP_W , UNIMAP_1 , UNIMAP_TAB , UNIMAP_E , UNIMAP_8 , UNIMAP_F4 , UNIMAP_Y , UNIMAP_5 },
168 { UNIMAP_F11 , UNIMAP_F10 , UNIMAP_F9 , UNIMAP_F12 , UNIMAP_DEL , UNIMAP_PGDN, UNIMAP_INS , UNIMAP_PGUP,
169 UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_NO , UNIMAP_F8 , UNIMAP_F5 , UNIMAP_F7 , UNIMAP_F6 }