+static report_keyboard_t report0;
+static report_keyboard_t report1;
+report_keyboard_t *keyboard_report = &report0;
+report_keyboard_t *keyboard_report_prev = &report1;
+
+static uint8_t keyboard_led = 0;
+static uchar idleRate = 0;
+
+uint8_t host_keyboard_led(void)
+{
+ return keyboard_led;
+}
+
+
+/*------------------------------------------------------------------*
+ * Keyboard report operations
+ *------------------------------------------------------------------*/
+void host_add_key(uint8_t code)
+{
+ int8_t i = 0;
+ int8_t empty = -1;
+ for (; i < REPORT_KEYS; i++) {
+ if (keyboard_report_prev->keys[i] == code) {
+ keyboard_report->keys[i] = code;
+ break;
+ }
+ if (empty == -1 && keyboard_report_prev->keys[i] == KB_NO && keyboard_report->keys[i] == KB_NO) {
+ empty = i;
+ }
+ }
+ if (i == REPORT_KEYS && empty != -1) {
+ keyboard_report->keys[empty] = code;
+ }
+}
+
+void host_add_mod_bit(uint8_t mod)
+{
+ keyboard_report->mods |= mod;
+}
+
+void host_set_mods(uint8_t mods)
+{
+ keyboard_report->mods = mods;
+}
+
+void host_add_code(uint8_t code)
+{
+ if (IS_MOD(code)) {
+ host_add_mod_bit(MOD_BIT(code));
+ } else {
+ host_add_key(code);
+ }
+}
+
+void host_swap_keyboard_report(void)
+{
+ report_keyboard_t *tmp = keyboard_report_prev;
+ keyboard_report_prev = keyboard_report;
+ keyboard_report = tmp;
+}
+
+void host_clear_keyboard_report(void)
+{
+ keyboard_report->mods = 0;
+ for (int8_t i = 0; i < REPORT_KEYS; i++) {
+ keyboard_report->keys[i] = 0;
+ }
+}
+
+uint8_t host_has_anykey(void)
+{
+ uint8_t cnt = 0;
+ for (int i = 0; i < REPORT_KEYS; i++) {
+ if (keyboard_report->keys[i])
+ cnt++;
+ }
+ return cnt;
+}
+
+uint8_t *host_get_keys(void)
+{
+ return keyboard_report->keys;
+}
+
+uint8_t host_get_mods(void)
+{
+ return keyboard_report->mods;
+}
+
+
+/*------------------------------------------------------------------*
+ * Keyboard report send buffer
+ *------------------------------------------------------------------*/
+#define KBUF_SIZE 16