pjrc/host.c

   1 #include <stdint.h>
   2 #include <avr/interrupt.h>
   3 #include "usb_keycodes.h"
   4 #include "usb_keyboard.h"
   5 #if defined(MOUSEKEY_ENABLE) || defined(PS2_MOUSE_ENABLE)
   6 #include "usb_mouse.h"
   7 #endif
   8 #ifdef USB_EXTRA_ENABLE
   9 #include "usb_extra.h"
  10 #endif
  11 #include "debug.h"
  12 #include "host.h"
  13 #include "util.h"
  14
  15
  16 #ifdef USB_NKRO_ENABLE
  17 bool keyboard_nkro = false;
  18 #endif
  19
  20 static report_keyboard_t report0;
  21 static report_keyboard_t report1;
  22 report_keyboard_t *keyboard_report = &report0;
  23 report_keyboard_t *keyboard_report_prev = &report1;
  24
  25 static inline void add_key_byte(uint8_t code);
  26 static inline void add_key_bit(uint8_t code);
  27
  28
  29 uint8_t host_keyboard_leds(void)
  30 {
  31     return usb_keyboard_leds;
  32 }
  33
  34 /* keyboard report operations */
  35 void host_add_key(uint8_t key)
  36 {
  37 #ifdef USB_NKRO_ENABLE
  38     if (keyboard_nkro) {
  39         add_key_bit(key);
  40         return;
  41     }
  42 #endif
  43     add_key_byte(key);
  44 }
  45
  46 void host_add_mod_bit(uint8_t mod)
  47 {
  48     keyboard_report->mods |= mod;
  49 }
  50
  51 void host_set_mods(uint8_t mods)
  52 {
  53     keyboard_report->mods = mods;
  54 }
  55
  56 void host_add_code(uint8_t code)
  57 {
  58     if (IS_MOD(code)) {
  59         host_add_mod_bit(MOD_BIT(code));
  60     } else {
  61         host_add_key(code);
  62     }
  63 }
  64
  65 void host_swap_keyboard_report(void)
  66 {
  67     uint8_t sreg = SREG;
  68     cli();
  69     report_keyboard_t *tmp = keyboard_report_prev;
  70     keyboard_report_prev = keyboard_report;
  71     keyboard_report = tmp;
  72     SREG = sreg;
  73 }
  74
  75 void host_clear_keyboard_report(void)
  76 {
  77     keyboard_report->mods = 0;
  78     for (int8_t i = 0; i < REPORT_KEYS; i++) {
  79         keyboard_report->keys[i] = 0;
  80     }
  81 }
  82
  83 uint8_t host_has_anykey(void)
  84 {
  85     uint8_t cnt = 0;
  86     for (int i = 0; i < REPORT_KEYS; i++) {
  87         if (keyboard_report->keys[i])
  88             cnt++;
  89     }
  90     return cnt;
  91 }
  92
  93 uint8_t host_get_first_key(void)
  94 {
  95 #ifdef USB_NKRO_ENABLE
  96     if (keyboard_nkro) {
  97         uint8_t i = 0;
  98         for (; i < REPORT_KEYS && !keyboard_report->keys[i]; i++)
  99             ;
 100         return i<<3 | biton(keyboard_report->keys[i]);
 101     }
 102 #endif
 103     return keyboard_report->keys[0];
 104 }
 105
 106
 107 void host_send_keyboard_report(void)
 108 {
 109     usb_keyboard_send_report(keyboard_report);
 110 }
 111
 112 #if defined(MOUSEKEY_ENABLE) || defined(PS2_MOUSE_ENABLE)
 113 void host_mouse_send(report_mouse_t *report)
 114 {
 115     usb_mouse_send(report->x, report->y, report->v, report->h, report->buttons);
 116 }
 117 #endif
 118
 119 #ifdef USB_EXTRA_ENABLE
 120 void host_system_send(uint8_t data)
 121 {
 122     usb_extra_system_send(data);
 123 }
 124
 125 void host_audio_send(uint8_t data)
 126 {
 127     usb_extra_audio_send(data);
 128 }
 129 #endif
 130
 131
 132 static inline void add_key_byte(uint8_t code)
 133 {
 134     // TODO: fix ugly code
 135     int8_t i = 0;
 136     int8_t empty = -1;
 137     for (; i < REPORT_KEYS; i++) {
 138         if (keyboard_report_prev->keys[i] == code) {
 139             keyboard_report->keys[i] = code;
 140             break;
 141         }
 142         if (empty == -1 &&
 143                 keyboard_report_prev->keys[i] == 0 &&
 144                 keyboard_report->keys[i] == 0) {
 145             empty = i;
 146         }
 147     }
 148     if (i == REPORT_KEYS) {
 149         if (empty != -1) {
 150             keyboard_report->keys[empty] = code;
 151         }
 152     }
 153 }
 154
 155 static inline void add_key_bit(uint8_t code)
 156 {
 157     if ((code>>3) < REPORT_KEYS) {
 158         keyboard_report->keys[code>>3] |= 1<<(code&7);
 159     } else {
 160         debug("add_key_bit: can't add: "); phex(code); debug("\n");
 161     }
 162 }