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tmk_keyboard/common/keyboard.c

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/*
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Copyright 2011,2012,2013 Jun Wako <wakojun@gmail.com>
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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/>.
*/
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#include <stdint.h>
#include <util/delay.h>
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#include "keyboard.h"
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#include "matrix.h"
#include "keymap.h"
#include "host.h"
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#include "led.h"
#include "keycode.h"
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#include "timer.h"
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#include "print.h"
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#include "debug.h"
#include "command.h"
#include "util.h"
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#include "sendchar.h"
#include "bootmagic.h"
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#ifdef MOUSEKEY_ENABLE
#include "mousekey.h"
#endif
#include "eeconfig.h"
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#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)
{
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// TODO: configuration of sendchar impl
print_sendchar_func = sendchar;
timer_init();
matrix_init();
#ifdef PS2_MOUSE_ENABLE
ps2_mouse_init();
#endif
bootmagic();
if (eeconfig_initialized()) {
uint8_t config;
config = eeconfig_read_debug();
debug_enable = (config & EECONFIG_DEBUG_ENABLE);
debug_matrix = (config & EECONFIG_DEBUG_MATRIX);
debug_keyboard = (config & EECONFIG_DEBUG_KEYBOARD);
debug_mouse = (config & EECONFIG_DEBUG_MOUSE);
} else {
eeconfig_init();
}
}
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/*
* 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];
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static uint8_t led_status = 0;
matrix_row_t matrix_row = 0;
matrix_row_t matrix_change = 0;
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matrix_scan();
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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
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for (uint8_t c = 0; c < MATRIX_COLS; c++) {
if (matrix_change & ((matrix_row_t)1<<c)) {
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action_exec((keyevent_t){
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.key = (key_t){ .row = r, .col = c },
.pressed = (matrix_row & ((matrix_row_t)1<<c)),
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.time = (timer_read() | 1) /* time should not be 0 */
});
// record a processed key
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matrix_prev[r] ^= ((matrix_row_t)1<<c);
// process a key per task call
goto MATRIX_LOOP_END;
}
}
}
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}
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// call with pseudo tick event when no real key event.
action_exec(TICK);
MATRIX_LOOP_END:
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#ifdef MOUSEKEY_ENABLE
// mousekey repeat & acceleration
mousekey_task();
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#endif
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// update LED
if (led_status != host_keyboard_leds()) {
led_status = host_keyboard_leds();
keyboard_set_leds(led_status);
}
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}
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void keyboard_set_leds(uint8_t leds)
{
led_set(leds);
}