pjrc/host.c

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