HKBD_BUFFER_SIZE
memset(sc->sc_buffer, 0, HKBD_BUFFER_SIZE);
hid_put_udata(sc->sc_buffer + 1, HKBD_BUFFER_SIZE - 1,
hid_put_udata(sc->sc_buffer + 1, HKBD_BUFFER_SIZE - 1,
hid_put_udata(sc->sc_buffer + 1, HKBD_BUFFER_SIZE - 1,
if (len > (HKBD_BUFFER_SIZE - 1))
len = (HKBD_BUFFER_SIZE - 1);
uint8_t sc_buffer[HKBD_BUFFER_SIZE];