/* * Copyright (c) 2011 Vojtech Horky * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * - Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * - The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /** @addtogroup usbvirthid * @{ */ /** * @file * */ #include <errno.h> #include <usb/debug.h> #include "virthid.h" void interface_life_live(vuhid_interface_t *iface) { vuhid_interface_life_t *data = iface->interface_data; data->data_in_pos = 0; data->data_in_last_pos = (size_t) -1; fibril_usleep(1000 * 1000 * 5); usb_log_debug("%s", data->msg_born); while (data->data_in_pos < data->data_in_count) { fibril_usleep(1000 * data->data_in_pos_change_delay); // FIXME: proper locking data->data_in_pos++; } usb_log_debug("%s", data->msg_die); } errno_t interface_live_on_data_in(vuhid_interface_t *iface, void *buffer, size_t buffer_size, size_t *act_buffer_size) { vuhid_interface_life_t *life = iface->interface_data; size_t pos = life->data_in_pos; if (pos >= life->data_in_count) { return EBADCHECKSUM; } if (pos == life->data_in_last_pos) { return ENAK; } if (buffer_size > iface->in_data_size) { buffer_size = iface->in_data_size; } if (act_buffer_size != NULL) { *act_buffer_size = buffer_size; } memcpy(buffer, life->data_in + pos * iface->in_data_size, buffer_size); life->data_in_last_pos = pos; return EOK; } /** @} */