ps2_vusb/keyboard.c

   1 #include "usb_keycodes.h"
   2 #include "host.h"
   3 #include "keyboard.h"
   4
   5 static report_keyboard_t report0;
   6 static report_keyboard_t report1;
   7 static report_keyboard_t *report = &report0;
   8 static report_keyboard_t *report_prev = &report1;
   9
  10 void keyboard_send(void)
  11 {
  12     host_keyboard_send(report);
  13 }
  14
  15 bool keyboard_has_key(void)
  16 {
  17     for (int i = 0; i < REPORT_KEYS; i++) {
  18         if (report->keys[i])
  19             return true;
  20     }
  21     return false;
  22 }
  23
  24 void keyboard_add_mod(uint8_t mod)
  25 {
  26     report->mods |= mod;
  27 }
  28
  29 void keyboard_add_key(uint8_t code)
  30 {
  31     int8_t i = 0;
  32     int8_t empty = -1;
  33     for (; i < REPORT_KEYS; i++) {
  34         if (report_prev->keys[i] == code) {
  35             report->keys[i] = code;
  36             break;
  37         }
  38         if (empty == -1 && report_prev->keys[i] == KB_NO && report->keys[i] == KB_NO) {
  39             empty = i;
  40         }
  41     }
  42     if (i == REPORT_KEYS && empty != -1) {
  43         report->keys[empty] = code;
  44     }
  45 }
  46
  47 void keyboard_add_code(uint8_t code)
  48 {
  49     if (IS_MOD(code)) {
  50         keyboard_add_mod(code);
  51     } else {
  52         keyboard_add_key(code);
  53     }
  54 }
  55
  56 void keyboard_swap_report(void)
  57 {
  58     report_keyboard_t *tmp = report_prev;
  59     report_prev = report;
  60     report = tmp;
  61 }
  62
  63 void keyboard_clear_report(void)
  64 {
  65     report->mods = 0;
  66     for (int8_t i = 0; i < REPORT_KEYS; i++) {
  67         report->keys[i] = 0;
  68     }
  69 }
  70
  71 report_keyboard_t *keyboard_report(void)
  72 {
  73     return report;
  74 }
  75
  76 report_keyboard_t *keyboard_report_prev(void)
  77 {
  78     return report_prev;
  79 }