text: /* $Id: usb_libusb.c,v 1.8 2005/09/13 02:32:14 geni Exp $
   *
   * Copyright (c) 2005 Huidae Cho
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. 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.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
   */
  
  #include <stdlib.h>
  #include <unistd.h>
  #include <fcntl.h>
  #include "dlusb.h"
  
  //#define LIBUSB_HAS_DETACH_KERNEL_DRIVER_NP
  
  int
  open_dev(dldev_t *dev)
  {
  	dev->usb.handle = hid_open(VENDOR_ID, PRODUCT_ID, NULL);
  	if(dev->usb.handle == NULL) {
  		ERROR("could not open device in open_dev()");
  		return -1;
  	}
  	return 0;
  }
  
  int
  close_dev(dldev_t *dev)
  {
  	if(!dev->usb.handle){
  		ERROR("no device to close");
  		return -1;
  	}
  	hid_close(dev->usb.handle);
  
  	return 0;
  }
  
  int
  send_usb_packet(dldev_t *dev, u8 *packet, u16 len)
  {
  	if(hid_write(dev->usb.handle, packet, len) == -1){
  		ERROR("could not send packet");
  		return -1;
  	}
  
  	return 0;
  }
  
  int
  read_usb_packet(dldev_t *dev, u8 *packet, u16 len)
  {
  	if(hid_read(dev->usb.handle, packet, len) == -1){
  		ERROR("can't read packet");
  		return -1;
  	}
  
  	return 0;
  }
  