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 "bootmagic.h"
  32 #include "eeconfig.h"
  33 #include "backlight.h"
  34 #ifdef MOUSEKEY_ENABLE
  35 #   include "mousekey.h"
  36 #endif
  37 #ifdef PS2_MOUSE_ENABLE
  38 #   include "ps2_mouse.h"
  39 #endif
  40 #ifdef SERIAL_MOUSE_ENABLE
  41 #include "serial_mouse.h"
  42 #endif
  43
  44
  45 #ifdef MATRIX_HAS_GHOST
  46 static bool has_ghost_in_row(uint8_t row)
  47 {
  48     matrix_row_t matrix_row = matrix_get_row(row);
  49     // No ghost exists when less than 2 keys are down on the row
  50     if (((matrix_row - 1) & matrix_row) == 0)
  51         return false;
  52
  53     // Ghost occurs when the row shares column line with other row
  54     for (uint8_t i=0; i < MATRIX_ROWS; i++) {
  55         if (i != row && (matrix_get_row(i) & matrix_row))
  56             return true;
  57     }
  58     return false;
  59 }
  60 #endif
  61
  62
  63 void keyboard_init(void)
  64 {
  65     timer_init();
  66     matrix_init();
  67 #ifdef PS2_MOUSE_ENABLE
  68     ps2_mouse_init();
  69 #endif
  70 #ifdef SERIAL_MOUSE_ENABLE
  71     serial_mouse_init();
  72 #endif
  73
  74
  75 #ifdef BOOTMAGIC_ENABLE
  76     bootmagic();
  77 #endif
  78
  79 #ifdef BACKLIGHT_ENABLE
  80     backlight_init();
  81 #endif
  82 }
  83
  84 /*
  85  * Do keyboard routine jobs: scan mantrix, light LEDs, ...
  86  * This is repeatedly called as fast as possible.
  87  */
  88 void keyboard_task(void)
  89 {
  90     static matrix_row_t matrix_prev[MATRIX_ROWS];
  91     static uint8_t led_status = 0;
  92     matrix_row_t matrix_row = 0;
  93     matrix_row_t matrix_change = 0;
  94
  95     matrix_scan();
  96     for (uint8_t r = 0; r < MATRIX_ROWS; r++) {
  97         matrix_row = matrix_get_row(r);
  98         matrix_change = matrix_row ^ matrix_prev[r];
  99         if (matrix_change) {
 100             if (debug_matrix) matrix_print();
 101 #ifdef MATRIX_HAS_GHOST
 102             if (has_ghost_in_row(r)) {
 103                 matrix_prev[r] = matrix_row;
 104                 continue;
 105             }
 106 #endif
 107             for (uint8_t c = 0; c < MATRIX_COLS; c++) {
 108                 if (matrix_change & ((matrix_row_t)1<<c)) {
 109                     action_exec((keyevent_t){
 110                         .key = (key_t){ .row = r, .col = c },
 111                         .pressed = (matrix_row & ((matrix_row_t)1<<c)),
 112                         .time = (timer_read() | 1) /* time should not be 0 */
 113                     });
 114                     // record a processed key
 115                     matrix_prev[r] ^= ((matrix_row_t)1<<c);
 116                     // process a key per task call
 117                     goto MATRIX_LOOP_END;
 118                 }
 119             }
 120         }
 121     }
 122     // call with pseudo tick event when no real key event.
 123     action_exec(TICK);
 124
 125 MATRIX_LOOP_END:
 126
 127 #ifdef MOUSEKEY_ENABLE
 128     // mousekey repeat & acceleration
 129     mousekey_task();
 130 #endif
 131
 132 #ifdef PS2_MOUSE_ENABLE
 133     ps2_mouse_task();
 134 #endif
 135
 136 #ifdef SERIAL_MOUSE_ENABLE
 137         serial_mouse_task();
 138 #endif
 139
 140     // update LED
 141     if (led_status != host_keyboard_leds()) {
 142         led_status = host_keyboard_leds();
 143         keyboard_set_leds(led_status);
 144     }
 145 }
 146
 147 void keyboard_set_leds(uint8_t leds)
 148 {
 149     if (debug_keyboard) { debug("keyboard_set_led: "); debug_hex8(leds); debug("\n"); }
 150     led_set(leds);
 151 }