keyboard.c

   1 #include "usb_keycodes.h"
   2 #include "host.h"
   3 #include "led.h"
   4 #include "keyboard.h"
   5 #include "print.h"
   6
   7 static report_keyboard_t report0;
   8 static report_keyboard_t report1;
   9 report_keyboard_t *keyboard_report = &report0;
  10 report_keyboard_t *keyboard_report_prev = &report1;
  11
  12
  13 void keyboard_set_led(uint8_t usb_led)
  14 {
  15     led_set(usb_led);
  16 }
  17
  18 void keyboard_send(void)
  19 {
  20     host_keyboard_send(keyboard_report);
  21 }
  22
  23 void keyboard_add_key(uint8_t code)
  24 {
  25     int8_t i = 0;
  26     int8_t empty = -1;
  27     for (; i < REPORT_KEYS; i++) {
  28         if (keyboard_report_prev->keys[i] == code) {
  29             keyboard_report->keys[i] = code;
  30             break;
  31         }
  32         if (empty == -1 && keyboard_report_prev->keys[i] == KB_NO && keyboard_report->keys[i] == KB_NO) {
  33             empty = i;
  34         }
  35     }
  36     if (i == REPORT_KEYS && empty != -1) {
  37         keyboard_report->keys[empty] = code;
  38     }
  39 }
  40
  41 void keyboard_add_mod_bit(uint8_t mod)
  42 {
  43     keyboard_report->mods |= mod;
  44 }
  45
  46 void keyboard_set_mods(uint8_t mods)
  47 {
  48     keyboard_report->mods = mods;
  49 }
  50
  51 void keyboard_add_code(uint8_t code)
  52 {
  53     if (IS_MOD(code)) {
  54         keyboard_add_mod_bit(MOD_BIT(code));
  55     } else {
  56         keyboard_add_key(code);
  57     }
  58 }
  59
  60 void keyboard_swap_report(void)
  61 {
  62     report_keyboard_t *tmp = keyboard_report_prev;
  63     keyboard_report_prev = keyboard_report;
  64     keyboard_report = tmp;
  65 }
  66
  67 void keyboard_clear_report(void)
  68 {
  69     keyboard_report->mods = 0;
  70     for (int8_t i = 0; i < REPORT_KEYS; i++) {
  71         keyboard_report->keys[i] = 0;
  72     }
  73 }
  74
  75 uint8_t keyboard_has_anykey(void)
  76 {
  77     uint8_t cnt = 0;
  78     for (int i = 0; i < REPORT_KEYS; i++) {
  79         if (keyboard_report->keys[i])
  80             cnt++;
  81     }
  82     return cnt;
  83 }
  84
  85 uint8_t *keyboard_get_keys(void)
  86 {
  87     return keyboard_report->keys;
  88 }
  89
  90 uint8_t keyboard_get_mods(void)
  91 {
  92     return keyboard_report->mods;
  93 }