common/keyboard.c

   1 /*
   2 Copyright 2011,2012,2013 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 #include <stdint.h>
  18 #include <util/delay.h>
  19 #include "keyboard.h"
  20 #include "matrix.h"
  21 #include "keymap.h"
  22 #include "host.h"
  23 #include "led.h"
  24 #include "keycode.h"
  25 #include "timer.h"
  26 #include "print.h"
  27 #include "debug.h"
  28 #include "command.h"
  29 #include "util.h"
  30 #include "sendchar.h"
  31 #include "bootloader.h"
  32 #ifdef MOUSEKEY_ENABLE
  33 #include "mousekey.h"
  34 #endif
  35
  36
  37 void keyboard_init(void)
  38 {
  39     // TODO: configuration of sendchar impl
  40     print_sendchar_func = sendchar;
  41
  42     timer_init();
  43     matrix_init();
  44
  45     /* matrix scan for boot magic keys */
  46 #ifdef DEBOUNCE
  47     uint8_t scan = DEBOUNCE * 2;
  48     while (scan--) { matrix_scan(); _delay_ms(1); }
  49 #else
  50     matrix_scan();
  51 #endif
  52
  53     /* boot magic keys */
  54 #ifdef IS_BOOTMAGIC_BOOTLOADER
  55     /* kick up bootloader */
  56     if (IS_BOOTMAGIC_BOOTLOADER()) bootloader_jump();
  57 #endif
  58 #ifdef IS_BOOTMAGIC_DEBUG
  59     if (IS_BOOTMAGIC_DEBUG()) debug_enable = true;
  60 #endif
  61
  62 #ifdef PS2_MOUSE_ENABLE
  63     ps2_mouse_init();
  64 #endif
  65 }
  66
  67 /*
  68  * Do keyboard routine jobs: scan mantrix, light LEDs, ...
  69  * This is repeatedly called as fast as possible.
  70  */
  71 void keyboard_task(void)
  72 {
  73     static matrix_row_t matrix_prev[MATRIX_ROWS];
  74     static uint8_t led_status = 0;
  75     matrix_row_t matrix_row = 0;
  76     matrix_row_t matrix_change = 0;
  77
  78     matrix_scan();
  79     for (uint8_t r = 0; r < MATRIX_ROWS; r++) {
  80         matrix_row = matrix_get_row(r);
  81         matrix_change = matrix_row ^ matrix_prev[r];
  82         if (matrix_change) {
  83             if (debug_matrix) matrix_print();
  84
  85             for (uint8_t c = 0; c < MATRIX_COLS; c++) {
  86                 if (matrix_change & ((matrix_row_t)1<<c)) {
  87                     action_exec((keyevent_t){
  88                         .key = (key_t){ .row = r, .col = c },
  89                         .pressed = (matrix_row & ((matrix_row_t)1<<c)),
  90                         .time = (timer_read() | 1) /* time should not be 0 */
  91                     });
  92                     // record a processed key
  93                     matrix_prev[r] ^= ((matrix_row_t)1<<c);
  94                     // process a key per task call
  95                     goto MATRIX_LOOP_END;
  96                 }
  97             }
  98         }
  99     }
 100     // call with pseudo tick event when no real key event.
 101     action_exec(TICK);
 102
 103 MATRIX_LOOP_END:
 104 #ifdef MOUSEKEY_ENABLE
 105     // mousekey repeat & acceleration
 106     mousekey_task();
 107 #endif
 108     // update LED
 109     if (led_status != host_keyboard_leds()) {
 110         led_status = host_keyboard_leds();
 111         keyboard_set_leds(led_status);
 112     }
 113 }
 114
 115 void keyboard_set_leds(uint8_t leds)
 116 {
 117     led_set(leds);
 118 }