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 "keyboard.h"
  19 #include "matrix.h"
  20 #include "keymap.h"
  21 #include "host.h"
  22 #include "led.h"
  23 #include "keycode.h"
  24 #include "timer.h"
  25 #include "print.h"
  26 #include "debug.h"
  27 #include "command.h"
  28 #include "util.h"
  29 #include "sendchar.h"
  30 #include "bootmagic.h"
  31 #include "eeconfig.h"
  32 #include "backlight.h"
  33 #ifdef MOUSEKEY_ENABLE
  34 #   include "mousekey.h"
  35 #endif
  36 #ifdef PS2_MOUSE_ENABLE
  37 #   include "ps2_mouse.h"
  38 #endif
  39 #ifdef SERIAL_MOUSE_ENABLE
  40 #include "serial_mouse.h"
  41 #endif
  42
  43
  44 #ifdef MATRIX_HAS_GHOST
  45 static bool has_ghost_in_row(uint8_t row)
  46 {
  47     matrix_row_t matrix_row = matrix_get_row(row);
  48     // No ghost exists when less than 2 keys are down on the row
  49     if (((matrix_row - 1) & matrix_row) == 0)
  50         return false;
  51
  52     // Ghost occurs when the row shares column line with other row
  53     for (uint8_t i=0; i < MATRIX_ROWS; i++) {
  54         if (i != row && (matrix_get_row(i) & matrix_row))
  55             return true;
  56     }
  57     return false;
  58 }
  59 #endif
  60
  61
  62 void keyboard_init(void)
  63 {
  64     timer_init();
  65     matrix_init();
  66 #ifdef PS2_MOUSE_ENABLE
  67     ps2_mouse_init();
  68 #endif
  69 #ifdef SERIAL_MOUSE_ENABLE
  70     serial_mouse_init();
  71 #endif
  72
  73
  74 #ifdef BOOTMAGIC_ENABLE
  75     bootmagic();
  76 #endif
  77
  78 #ifdef BACKLIGHT_ENABLE
  79     backlight_init();
  80 #endif
  81 }
  82
  83 /*
  84  * Do keyboard routine jobs: scan mantrix, light LEDs, ...
  85  * This is repeatedly called as fast as possible.
  86  */
  87 void keyboard_task(void)
  88 {
  89     static matrix_row_t matrix_prev[MATRIX_ROWS];
  90     static uint8_t led_status = 0;
  91     matrix_row_t matrix_row = 0;
  92     matrix_row_t matrix_change = 0;
  93
  94     matrix_scan();
  95     for (uint8_t r = 0; r < MATRIX_ROWS; r++) {
  96         matrix_row = matrix_get_row(r);
  97         matrix_change = matrix_row ^ matrix_prev[r];
  98         if (matrix_change) {
  99             if (debug_matrix) matrix_print();
 100 #ifdef MATRIX_HAS_GHOST
 101             if (has_ghost_in_row(r)) {
 102                 matrix_prev[r] = matrix_row;
 103                 continue;
 104             }
 105 #endif
 106             for (uint8_t c = 0; c < MATRIX_COLS; c++) {
 107                 if (matrix_change & ((matrix_row_t)1<<c)) {
 108                     action_exec((keyevent_t){
 109                         .key = (keypos_t){ .row = r, .col = c },
 110                         .pressed = (matrix_row & ((matrix_row_t)1<<c)),
 111                         .time = (timer_read() | 1) /* time should not be 0 */
 112                     });
 113                     // record a processed key
 114                     matrix_prev[r] ^= ((matrix_row_t)1<<c);
 115                     // process a key per task call
 116                     goto MATRIX_LOOP_END;
 117                 }
 118             }
 119         }
 120     }
 121     // call with pseudo tick event when no real key event.
 122     action_exec(TICK);
 123
 124 MATRIX_LOOP_END:
 125
 126 #ifdef MOUSEKEY_ENABLE
 127     // mousekey repeat & acceleration
 128     mousekey_task();
 129 #endif
 130
 131 #ifdef PS2_MOUSE_ENABLE
 132     ps2_mouse_task();
 133 #endif
 134
 135 #ifdef SERIAL_MOUSE_ENABLE
 136         serial_mouse_task();
 137 #endif
 138
 139     // update LED
 140     if (led_status != host_keyboard_leds()) {
 141         led_status = host_keyboard_leds();
 142         keyboard_set_leds(led_status);
 143     }
 144 }
 145
 146 void keyboard_set_leds(uint8_t leds)
 147 {
 148     if (debug_keyboard) { debug("keyboard_set_led: "); debug_hex8(leds); debug("\n"); }
 149     led_set(leds);
 150 }