summaryrefslogtreecommitdiffstats
path: root/common/keyboard.c
blob: d1821a099f554db950f912f66755aefac2ae2c7a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
/*
Copyright 2011,2012,2013 Jun Wako <wakojun@gmail.com>

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdint.h>
#include <util/delay.h>
#include "keyboard.h"
#include "matrix.h"
#include "keymap.h"
#include "host.h"
#include "led.h"
#include "keycode.h"
#include "timer.h"
#include "print.h"
#include "debug.h"
#include "command.h"
#include "util.h"
#include "sendchar.h"
#include "bootmagic.h"
#include "eeconfig.h"
#include "mousekey.h"
#include "backlight.h"


#ifdef MATRIX_HAS_GHOST
static bool has_ghost_in_row(uint8_t row)
{
    matrix_row_t matrix_row = matrix_get_row(row);
    // No ghost exists when less than 2 keys are down on the row
    if (((matrix_row - 1) & matrix_row) == 0)
        return false;

    // Ghost occurs when the row shares column line with other row
    for (uint8_t i=0; i < MATRIX_ROWS; i++) {
        if (i != row && (matrix_get_row(i) & matrix_row))
            return true;
    }
    return false;
}
#endif


void keyboard_init(void)
{
    // TODO: configuration of sendchar impl
    print_set_sendchar(sendchar);

    timer_init();
    matrix_init();
#ifdef PS2_MOUSE_ENABLE
    ps2_mouse_init();
#endif

#ifdef BOOTMAGIC_ENABLE
    bootmagic();
#endif

#ifdef BACKLIGHT_ENABLE
    backlight_init();
#endif
}

/*
 * Do keyboard routine jobs: scan mantrix, light LEDs, ...
 * This is repeatedly called as fast as possible.
 */
void keyboard_task(void)
{
    static matrix_row_t matrix_prev[MATRIX_ROWS];
    static uint8_t led_status = 0;
    matrix_row_t matrix_row = 0;
    matrix_row_t matrix_change = 0;

    matrix_scan();
    for (uint8_t r = 0; r < MATRIX_ROWS; r++) {
        matrix_row = matrix_get_row(r);
        matrix_change = matrix_row ^ matrix_prev[r];
        if (matrix_change) {
            if (debug_matrix) matrix_print();
#ifdef MATRIX_HAS_GHOST
            if (has_ghost_in_row(r)) {
                matrix_prev[r] = matrix_row;
                continue;
            }
#endif
            for (uint8_t c = 0; c < MATRIX_COLS; c++) {
                if (matrix_change & ((matrix_row_t)1<<c)) {
                    action_exec((keyevent_t){
                        .key = (key_t){ .row = r, .col = c },
                        .pressed = (matrix_row & ((matrix_row_t)1<<c)),
                        .time = (timer_read() | 1) /* time should not be 0 */
                    });
                    // record a processed key
                    matrix_prev[r] ^= ((matrix_row_t)1<<c);
                    // process a key per task call
                    goto MATRIX_LOOP_END;
                }
            }
        }
    }
    // call with pseudo tick event when no real key event.
    action_exec(TICK);

MATRIX_LOOP_END:
#ifdef MOUSEKEY_ENABLE
    // mousekey repeat & acceleration
    mousekey_task();
#endif
    // update LED
    if (led_status != host_keyboard_leds()) {
        led_status = host_keyboard_leds();
        keyboard_set_leds(led_status);
    }
}

void keyboard_set_leds(uint8_t leds)
{
    if (debug_keyboard) { debug("keyboard_set_led: "); debug_hex8(leds); debug("\n"); }
    led_set(leds);
}