Demos/Host/GenericHIDHost/ConfigDescriptor.h

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2009.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6       www.fourwalledcubicle.com
   7 */
   8
   9 /*
  10   Copyright 2009  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11
  12   Permission to use, copy, modify, and distribute this software
  13   and its documentation for any purpose and without fee is hereby
  14   granted, provided that the above copyright notice appear in all
  15   copies and that both that the copyright notice and this
  16   permission notice and warranty disclaimer appear in supporting
  17   documentation, and that the name of the author not be used in
  18   advertising or publicity pertaining to distribution of the
  19   software without specific, written prior permission.
  20
  21   The author disclaim all warranties with regard to this
  22   software, including all implied warranties of merchantability
  23   and fitness.  In no event shall the author be liable for any
  24   special, indirect or consequential damages or any damages
  25   whatsoever resulting from loss of use, data or profits, whether
  26   in an action of contract, negligence or other tortious action,
  27   arising out of or in connection with the use or performance of
  28   this software.
  29 */
  30
  31 /** \file
  32  *
  33  *  Header file for ConfigDescriptor.c.
  34  */
  35
  36 #ifndef _CONFIGDESCRIPTOR_H_
  37 #define _CONFIGDESCRIPTOR_H_
  38
  39         /* Includes: */
  40                 #include <LUFA/Drivers/USB/USB.h>                        // USB Functionality
  41                 #include <LUFA/Drivers/USB/Class/ConfigDescriptor.h>     // Configuration Descriptor Parser
  42
  43                 #include "GenericHIDHost.h"
  44
  45         /* Macros: */
  46                 /** Interface Class value for the Human Interface Device class */
  47                 #define HID_CLASS                 0x03
  48
  49                 /** Maximum size of a device configuration descriptor which can be processed by the host, in bytes */
  50                 #define MAX_CONFIG_DESCRIPTOR_SIZE  512
  51
  52         /* Enums: */
  53                 /** Enum for the possible return codes of the ProcessConfigurationDescriptor() function. */
  54                 enum GenericHIDHost_GetConfigDescriptorDataCodes_t
  55                 {
  56                         SuccessfulConfigRead            = 0, /**< Configuration Descriptor was processed successfully */
  57                         ControlError                    = 1, /**< A control request to the device failed to complete successfully */
  58                         DescriptorTooLarge              = 2, /**< The device's Configuration Descriptor is too large to process */
  59                         InvalidConfigDataReturned       = 3, /**< The device returned an invalid Configuration Descriptor */
  60                         NoHIDInterfaceFound             = 4, /**< A compatible HID interface was not found in the device's Configuration Descriptor */
  61                         NoEndpointFound                 = 5, /**< A compatible HID IN endpoint was not found in the device's HID interface */
  62                 };
  63
  64         /* Configuration Descriptor Comparison Functions: */
  65                 DESCRIPTOR_COMPARATOR(NextHIDInterface);
  66                 DESCRIPTOR_COMPARATOR(NextInterfaceHIDDataEndpoint);
  67
  68         /* Function Prototypes: */
  69                 uint8_t ProcessConfigurationDescriptor(void);
  70
  71 #endif