Add svn:eol-style property to source files, so that the line endings are correctly...
[pub/USBasp.git] / LUFA / Drivers / USB / Class / Host / HID.h
index 9c04006..1291bd2 100644 (file)
-/*\r
-             LUFA Library\r
-     Copyright (C) Dean Camera, 2010.\r
-              \r
-  dean [at] fourwalledcubicle [dot] com\r
-      www.fourwalledcubicle.com\r
-*/\r
-\r
-/*\r
-  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
-\r
-  Permission to use, copy, modify, distribute, and sell this \r
-  software and its documentation for any purpose is hereby granted\r
-  without fee, provided that the above copyright notice appear in \r
-  all copies and that both that the copyright notice and this\r
-  permission notice and warranty disclaimer appear in supporting \r
-  documentation, and that the name of the author not be used in \r
-  advertising or publicity pertaining to distribution of the \r
-  software without specific, written prior permission.\r
-\r
-  The author disclaim all warranties with regard to this\r
-  software, including all implied warranties of merchantability\r
-  and fitness.  In no event shall the author be liable for any\r
-  special, indirect or consequential damages or any damages\r
-  whatsoever resulting from loss of use, data or profits, whether\r
-  in an action of contract, negligence or other tortious action,\r
-  arising out of or in connection with the use or performance of\r
-  this software.\r
-*/\r
-\r
-/** \file\r
- *  \brief Host mode driver for the library USB HID Class driver.\r
- *\r
- *  Host mode driver for the library USB HID Class driver.\r
- *\r
- *  \note This file should not be included directly. It is automatically included as needed by the class driver\r
- *        dispatch header located in LUFA/Drivers/USB/Class/HID.h.\r
- */\r
-\r
-/** \ingroup Group_USBClassHID\r
- *  @defgroup Group_USBClassHIDHost HID Class Host Mode Driver\r
- *\r
- *  \section Sec_Dependencies Module Source Dependencies\r
- *  The following files must be built with any user project that uses this module:\r
- *    - LUFA/Drivers/USB/Class/Host/HID.c\r
- *    - LUFA/Drivers/USB/Class/Host/HIDParser.c\r
- *\r
- *  \section Module Description\r
- *  Host Mode USB Class driver framework interface, for the HID USB Class driver.\r
- *\r
- *  @{\r
- */\r
-\r
-#ifndef __HID_CLASS_HOST_H__\r
-#define __HID_CLASS_HOST_H__\r
-\r
-       /* Includes: */\r
-               #include "../../USB.h"\r
-               #include "../Common/HID.h"\r
-               #include "HIDParser.h"\r
-               \r
-       /* Enable C linkage for C++ Compilers: */\r
-               #if defined(__cplusplus)\r
-                       extern "C" {\r
-               #endif\r
-\r
-       /* Preprocessor Checks: */\r
-               #if !defined(__INCLUDE_FROM_HID_DRIVER)\r
-                       #error Do not include this file directly. Include LUFA/Drivers/Class/HID.h instead.\r
-               #endif\r
-\r
-       /* Public Interface - May be used in end-application: */\r
-               /* Macros: */\r
-                       /** Error code for some HID Host functions, indicating a logical (and not hardware) error */\r
-                       #define HID_ERROR_LOGICAL              0x80\r
-       \r
-               /* Type Defines: */\r
-                       /** \brief HID Class Host Mode Configuration and State Structure.\r
-                        *\r
-                        *  Class state structure. An instance of this structure should be made within the user application,\r
-                        *  and passed to each of the HID class driver functions as the HIDInterfaceInfo parameter. This\r
-                        *  stores each HID interface's configuration and state information.\r
-                        */\r
-                       typedef struct\r
-                       {\r
-                               const struct\r
-                               {\r
-                                       uint8_t  DataINPipeNumber; /**< Pipe number of the HID interface's IN data pipe */\r
-                                       bool     DataINPipeDoubleBank; /** Indicates if the HID interface's IN data pipe should use double banking */\r
-\r
-                                       uint8_t  DataOUTPipeNumber; /**< Pipe number of the HID interface's OUT data pipe */\r
-                                       bool     DataOUTPipeDoubleBank; /** Indicates if the HID interface's OUT data pipe should use double banking */\r
-\r
-                                       uint8_t  HIDInterfaceProtocol; /**< HID interface protocol value to match against if a specific\r
-                                                                       *   boot subclass protocol is required, either \ref HID_BOOT_MOUSE_PROTOCOL,\r
-                                                                                                       *   \ref HID_BOOT_KEYBOARD_PROTOCOL or \ref HID_NON_BOOT_PROTOCOL if any\r
-                                                                                                       *   HID device should be enumerated by the interface\r
-                                                                       */\r
-                                       #if !defined(HID_HOST_BOOT_PROTOCOL_ONLY)\r
-                                       HID_ReportInfo_t* HIDParserData; /**< HID parser data to store the parsed HID report data, when boot protocol\r
-                                                                         *   is not used\r
-                                                                                                         *\r
-                                                                         *  \note When the HID_HOST_BOOT_PROTOCOL_ONLY compile time token is defined,\r
-                                                                         *        this method is unavailable.\r
-                                                                         */\r
-                                       #endif\r
-                               } Config; /**< Config data for the USB class interface within the device. All elements in this section\r
-                                          *   <b>must</b> be set or the interface will fail to enumerate and operate correctly.\r
-                                          */\r
-                               struct\r
-                               {\r
-                                       bool IsActive; /**< Indicates if the current interface instance is connected to an attached device, valid\r
-                                                       *   after \ref HID_Host_ConfigurePipes() is called and the Host state machine is in the\r
-                                                       *   Configured state\r
-                                                       */\r
-                                       uint8_t InterfaceNumber; /**< Interface index of the HID interface within the attached device */\r
-\r
-                                       uint16_t DataINPipeSize; /**< Size in bytes of the HID interface's IN data pipe */\r
-                                       uint16_t DataOUTPipeSize;  /**< Size in bytes of the HID interface's OUT data pipe */\r
-                                       \r
-                                       bool SupportsBootProtocol; /**< Indicates if the current interface instance supports the HID Boot\r
-                                                                   *   Protocol when enabled via \ref HID_Host_SetBootProtocol()\r
-                                                                   */\r
-                                       bool DeviceUsesOUTPipe; /**< Indicates if the current interface instance uses a separate OUT data pipe for\r
-                                                                *   OUT reports, or if OUT reports are sent via the control pipe instead.\r
-                                                                */\r
-                                       bool UsingBootProtocol; /**< Indicates that the interface is currently initialized in Boot Protocol mode */\r
-                                       uint16_t HIDReportSize; /**< Size in bytes of the HID report descriptor in the device */\r
-                                       \r
-                                       uint8_t LargestReportSize; /**< Largest report the device will send, in bytes */\r
-                               } State; /**< State data for the USB class interface within the device. All elements in this section\r
-                                                 *   <b>may</b> be set to initial values, but may also be ignored to default to sane values when\r
-                                                 *   the interface is enumerated.\r
-                                                 */\r
-                       } USB_ClassInfo_HID_Host_t;\r
-\r
-               /* Enums: */\r
-                       /** Enum for the possible error codes returned by the \ref HID_Host_ConfigurePipes() function. */\r
-                       enum HIDHost_EnumerationFailure_ErrorCodes_t\r
-                       {\r
-                               HID_ENUMERROR_NoError                    = 0, /**< Configuration Descriptor was processed successfully */\r
-                               HID_ENUMERROR_InvalidConfigDescriptor    = 1, /**< The device returned an invalid Configuration Descriptor */\r
-                               HID_ENUMERROR_NoHIDInterfaceFound        = 2, /**< A compatible HID interface was not found in the device's Configuration Descriptor */\r
-                               HID_ENUMERROR_NoHIDDescriptorFound       = 3, /**< The HID descriptor was not found in the device's HID interface */\r
-                               HID_ENUMERROR_EndpointsNotFound          = 4, /**< Compatible HID endpoints were not found in the device's HID interface */\r
-                       };\r
-       \r
-               /* Function Prototypes: */\r
-                       /** Host interface configuration routine, to configure a given HID host interface instance using the Configuration\r
-                        *  Descriptor read from an attached USB device. This function automatically updates the given HID Host instance's\r
-                        *  state values and configures the pipes required to communicate with the interface if it is found within the\r
-                        *  device. This should be called once after the stack has enumerated the attached device, while the host state\r
-                        *  machine is in the Addressed state.\r
-                        *\r
-                        *  \note Once the device pipes are configured, the HID device's reporting protocol <b>must</b> be set via a call\r
-                        *        to either the \ref HID_Host_SetBootProtocol() or \ref HID_Host_SetReportProtocol() function.\r
-                        *\r
-                        *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class host configuration and state\r
-                        *  \param[in] ConfigDescriptorSize  Length of the attached device's Configuration Descriptor\r
-                        *  \param[in] DeviceConfigDescriptor  Pointer to a buffer containing the attached device's Configuration Descriptor\r
-                        *\r
-                        *  \return A value from the \ref HIDHost_EnumerationFailure_ErrorCodes_t enum\r
-                        */\r
-                       uint8_t HID_Host_ConfigurePipes(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo, uint16_t ConfigDescriptorSize,\r
-                                                       void* DeviceConfigDescriptor) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(3);\r
-\r
-\r
-                       /** Receives a HID IN report from the attached HID device, when a report has been received on the HID IN Data pipe.\r
-                        *  \r
-                        *  \note This function must only be called when the Host state machine is in the HOST_STATE_Configured state or the\r
-                        *        call will fail.\r
-                        *        \n\n\r
-                        *\r
-                        *  \note The destination buffer should be large enough to accommodate the largest report that the attached device\r
-                        *        can generate.\r
-                        *\r
-                        *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class host configuration and state\r
-                        *  \param[in] Buffer  Buffer to store the received report into\r
-                        *\r
-                        *  \return An error code from the \ref Pipe_Stream_RW_ErrorCodes_t enum\r
-                        */\r
-                       uint8_t HID_Host_ReceiveReport(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo, void* Buffer)\r
-                                                      ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);\r
-\r
-                       #if !defined(HID_HOST_BOOT_PROTOCOL_ONLY)\r
-                       /** Receives a HID IN report from the attached device, by the report ID.\r
-                        *\r
-                        *  \note This function must only be called when the Host state machine is in the HOST_STATE_Configured state or the\r
-                        *        call will fail.\r
-                        *        \n\n\r
-                        *\r
-                        *  \note When the HID_HOST_BOOT_PROTOCOL_ONLY compile time token is defined, this method is unavailable.\r
-                        *\r
-                        *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class host configuration and state\r
-                        *  \param[in] ReportID  Report ID of the received report if ControlRequest is false, set by the to the Report ID to fetch\r
-                        *  \param[in] Buffer  Buffer to store the received report into\r
-                        *\r
-                        *  \return A value from the \ref USB_Host_SendControlErrorCodes_t enum\r
-                        */\r
-                       uint8_t HID_Host_ReceiveReportByID(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo, const uint8_t ReportID,\r
-                                                          void* Buffer) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(3);\r
-                       #endif\r
-                       \r
-                       /** Sends an OUT report to the currently attached HID device, using the device's OUT pipe if available or the device's\r
-                        *  Control pipe if not.\r
-                        *\r
-                        *  \note This function must only be called when the Host state machine is in the HOST_STATE_Configured state or the\r
-                        *        call will fail.\r
-                        *        \n\n\r
-                        *\r
-                        *  \note When the HID_HOST_BOOT_PROTOCOL_ONLY compile time token is defined, the ReportID parameter is removed\r
-                        *        from the parameter list of this function.\r
-                        *\r
-                        *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class host configuration and state\r
-                        *  \param[in] ReportID  Report ID of the report to send to the device, or 0 if the device does not use report IDs\r
-                        *  \param[in] Buffer  Buffer containing the report to send to the attached device\r
-                        *  \param[in] ReportSize  Report size in bytes to send to the attached device\r
-                        *\r
-                        *  \return An error code from the \ref USB_Host_SendControlErrorCodes_t enum if the DeviceUsesOUTPipe flag is set in\r
-                        *          the interface's state structure, a value from the \ref Pipe_Stream_RW_ErrorCodes_t enum otherwise\r
-                        */\r
-                       uint8_t HID_Host_SendReportByID(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo,\r
-                       #if !defined(HID_HOST_BOOT_PROTOCOL_ONLY)\r
-                                                       const uint8_t ReportID,\r
-                       #endif\r
-                                                       void* Buffer, const uint16_t ReportSize) ATTR_NON_NULL_PTR_ARG(1)\r
-                       #if !defined(HID_HOST_BOOT_PROTOCOL_ONLY)\r
-                                                       ATTR_NON_NULL_PTR_ARG(3);\r
-                       #else\r
-                                                       ATTR_NON_NULL_PTR_ARG(2);\r
-                       #endif\r
-\r
-                       /** Determines if a HID IN report has been received from the attached device on the data IN pipe.\r
-                        *\r
-                        *  \note This function must only be called when the Host state machine is in the HOST_STATE_Configured state or the\r
-                        *        call will fail.\r
-                        *\r
-                        *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class host configuration and state\r
-                        *\r
-                        *  \return Boolean true if a report has been received, false otherwise\r
-                        */\r
-                       bool HID_Host_IsReportReceived(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);\r
-                       \r
-                       /** Switches the attached HID device's reporting protocol over to the Boot Report protocol mode, on supported devices.\r
-                        *\r
-                        *  \note When the HID_HOST_BOOT_PROTOCOL_ONLY compile time token is defined, this method must still be called\r
-                        *        to explicitly place the attached device into boot protocol mode before use.\r
-                        *\r
-                        *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class host configuration and state\r
-                        *\r
-                        *  \return \ref HID_ERROR_LOGICAL if the device does not support Boot Protocol mode, a value from the\r
-                        *          \ref USB_Host_SendControlErrorCodes_t enum otherwise\r
-                        */\r
-                       uint8_t HID_Host_SetBootProtocol(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);\r
-\r
-                       #if !defined(HID_HOST_BOOT_PROTOCOL_ONLY)\r
-                       /** Switches the attached HID device's reporting protocol over to the standard Report protocol mode. This also retrieves\r
-                        *  and parses the device's HID report descriptor, so that the size of each report can be determined in advance.\r
-                        *\r
-                        *  \note Whether this function is used or not, the \ref CALLBACK_HIDParser_FilterHIDReportItem() callback from the HID\r
-                        *        Report Parser this function references <b>must</b> be implemented in the user code.\r
-                        *        \n\n\r
-                        *\r
-                        *  \note When the HID_HOST_BOOT_PROTOCOL_ONLY compile time token is defined, this method is unavailable.\r
-                        *\r
-                        *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class host configuration and state\r
-                        *\r
-                        *  \return A value from the \ref USB_Host_SendControlErrorCodes_t enum if an error occurs while retrieving the HID\r
-                        *          Report descriptor or the setting of the Report protocol, \ref HID_ERROR_LOGICAL if the HID interface does\r
-                        *          not have a valid \ref HID_ReportInfo_t structure set in its configuration, a mask of \ref HID_ERROR_LOGICAL\r
-                        *          and a value from the \ref HID_Parse_ErrorCodes_t otherwise\r
-                        */\r
-                       uint8_t HID_Host_SetReportProtocol(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);\r
-                       #endif\r
-                       \r
-               /* Inline Functions: */\r
-                       /** General management task for a given Human Interface Class host class interface, required for the correct operation of\r
-                        *  the interface. This should be called frequently in the main program loop, before the master USB management task\r
-                        *  \ref USB_USBTask().\r
-                        *\r
-                        *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class host configuration and state\r
-                        */\r
-                       static inline void HID_Host_USBTask(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo);\r
-                       static inline void HID_Host_USBTask(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo)\r
-                       {\r
-                               (void)HIDInterfaceInfo;\r
-                       }               \r
-\r
-       /* Private Interface - For use in library only: */\r
-       #if !defined(__DOXYGEN__)\r
-               /* Macros: */\r
-                       #define HID_INTERFACE_CLASS             0x03\r
-                       \r
-                       #define HID_FOUND_DATAPIPE_IN           (1 << 0)\r
-                       #define HID_FOUND_DATAPIPE_OUT          (1 << 1)\r
-\r
-               /* Function Prototypes: */\r
-                       #if defined(__INCLUDE_FROM_HID_CLASS_HOST_C)\r
-                               static uint8_t DComp_HID_Host_NextHIDInterface(void* const CurrentDescriptor) ATTR_NON_NULL_PTR_ARG(1);\r
-                               static uint8_t DComp_NextHID(void* const CurrentDescriptor) ATTR_NON_NULL_PTR_ARG(1);\r
-                               static uint8_t DComp_HID_Host_NextHIDInterfaceEndpoint(void* const CurrentDescriptor) ATTR_NON_NULL_PTR_ARG(1);\r
-                       #endif  \r
-       #endif  \r
-       \r
-       /* Disable C linkage for C++ Compilers: */\r
-               #if defined(__cplusplus)\r
-                       }\r
-               #endif\r
-\r
-#endif\r
-\r
-/** @} */\r
+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2010.
+              
+  dean [at] fourwalledcubicle [dot] com
+      www.fourwalledcubicle.com
+*/
+
+/*
+  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+  Permission to use, copy, modify, distribute, and sell this 
+  software and its documentation for any purpose is hereby granted
+  without fee, provided that the above copyright notice appear in 
+  all copies and that both that the copyright notice and this
+  permission notice and warranty disclaimer appear in supporting 
+  documentation, and that the name of the author not be used in 
+  advertising or publicity pertaining to distribution of the 
+  software without specific, written prior permission.
+
+  The author disclaim all warranties with regard to this
+  software, including all implied warranties of merchantability
+  and fitness.  In no event shall the author be liable for any
+  special, indirect or consequential damages or any damages
+  whatsoever resulting from loss of use, data or profits, whether
+  in an action of contract, negligence or other tortious action,
+  arising out of or in connection with the use or performance of
+  this software.
+*/
+
+/** \file
+ *  \brief Host mode driver for the library USB HID Class driver.
+ *
+ *  Host mode driver for the library USB HID Class driver.
+ *
+ *  \note This file should not be included directly. It is automatically included as needed by the class driver
+ *        dispatch header located in LUFA/Drivers/USB/Class/HID.h.
+ */
+
+/** \ingroup Group_USBClassHID
+ *  @defgroup Group_USBClassHIDHost HID Class Host Mode Driver
+ *
+ *  \section Sec_Dependencies Module Source Dependencies
+ *  The following files must be built with any user project that uses this module:
+ *    - LUFA/Drivers/USB/Class/Host/HID.c
+ *    - LUFA/Drivers/USB/Class/Host/HIDParser.c
+ *
+ *  \section Module Description
+ *  Host Mode USB Class driver framework interface, for the HID USB Class driver.
+ *
+ *  @{
+ */
+
+#ifndef __HID_CLASS_HOST_H__
+#define __HID_CLASS_HOST_H__
+
+       /* Includes: */
+               #include "../../USB.h"
+               #include "../Common/HID.h"
+               #include "HIDParser.h"
+               
+       /* Enable C linkage for C++ Compilers: */
+               #if defined(__cplusplus)
+                       extern "C" {
+               #endif
+
+       /* Preprocessor Checks: */
+               #if !defined(__INCLUDE_FROM_HID_DRIVER)
+                       #error Do not include this file directly. Include LUFA/Drivers/Class/HID.h instead.
+               #endif
+
+       /* Public Interface - May be used in end-application: */
+               /* Macros: */
+                       /** Error code for some HID Host functions, indicating a logical (and not hardware) error */
+                       #define HID_ERROR_LOGICAL              0x80
+       
+               /* Type Defines: */
+                       /** \brief HID Class Host Mode Configuration and State Structure.
+                        *
+                        *  Class state structure. An instance of this structure should be made within the user application,
+                        *  and passed to each of the HID class driver functions as the HIDInterfaceInfo parameter. This
+                        *  stores each HID interface's configuration and state information.
+                        */
+                       typedef struct
+                       {
+                               const struct
+                               {
+                                       uint8_t  DataINPipeNumber; /**< Pipe number of the HID interface's IN data pipe */
+                                       bool     DataINPipeDoubleBank; /** Indicates if the HID interface's IN data pipe should use double banking */
+
+                                       uint8_t  DataOUTPipeNumber; /**< Pipe number of the HID interface's OUT data pipe */
+                                       bool     DataOUTPipeDoubleBank; /** Indicates if the HID interface's OUT data pipe should use double banking */
+
+                                       uint8_t  HIDInterfaceProtocol; /**< HID interface protocol value to match against if a specific
+                                                                       *   boot subclass protocol is required, either \ref HID_BOOT_MOUSE_PROTOCOL,
+                                                                                                       *   \ref HID_BOOT_KEYBOARD_PROTOCOL or \ref HID_NON_BOOT_PROTOCOL if any
+                                                                                                       *   HID device should be enumerated by the interface
+                                                                       */
+                                       #if !defined(HID_HOST_BOOT_PROTOCOL_ONLY)
+                                       HID_ReportInfo_t* HIDParserData; /**< HID parser data to store the parsed HID report data, when boot protocol
+                                                                         *   is not used
+                                                                                                         *
+                                                                         *  \note When the HID_HOST_BOOT_PROTOCOL_ONLY compile time token is defined,
+                                                                         *        this method is unavailable.
+                                                                         */
+                                       #endif
+                               } Config; /**< Config data for the USB class interface within the device. All elements in this section
+                                          *   <b>must</b> be set or the interface will fail to enumerate and operate correctly.
+                                          */
+                               struct
+                               {
+                                       bool IsActive; /**< Indicates if the current interface instance is connected to an attached device, valid
+                                                       *   after \ref HID_Host_ConfigurePipes() is called and the Host state machine is in the
+                                                       *   Configured state
+                                                       */
+                                       uint8_t InterfaceNumber; /**< Interface index of the HID interface within the attached device */
+
+                                       uint16_t DataINPipeSize; /**< Size in bytes of the HID interface's IN data pipe */
+                                       uint16_t DataOUTPipeSize;  /**< Size in bytes of the HID interface's OUT data pipe */
+                                       
+                                       bool SupportsBootProtocol; /**< Indicates if the current interface instance supports the HID Boot
+                                                                   *   Protocol when enabled via \ref HID_Host_SetBootProtocol()
+                                                                   */
+                                       bool DeviceUsesOUTPipe; /**< Indicates if the current interface instance uses a separate OUT data pipe for
+                                                                *   OUT reports, or if OUT reports are sent via the control pipe instead.
+                                                                */
+                                       bool UsingBootProtocol; /**< Indicates that the interface is currently initialized in Boot Protocol mode */
+                                       uint16_t HIDReportSize; /**< Size in bytes of the HID report descriptor in the device */
+                                       
+                                       uint8_t LargestReportSize; /**< Largest report the device will send, in bytes */
+                               } State; /**< State data for the USB class interface within the device. All elements in this section
+                                                 *   <b>may</b> be set to initial values, but may also be ignored to default to sane values when
+                                                 *   the interface is enumerated.
+                                                 */
+                       } USB_ClassInfo_HID_Host_t;
+
+               /* Enums: */
+                       /** Enum for the possible error codes returned by the \ref HID_Host_ConfigurePipes() function. */
+                       enum HIDHost_EnumerationFailure_ErrorCodes_t
+                       {
+                               HID_ENUMERROR_NoError                    = 0, /**< Configuration Descriptor was processed successfully */
+                               HID_ENUMERROR_InvalidConfigDescriptor    = 1, /**< The device returned an invalid Configuration Descriptor */
+                               HID_ENUMERROR_NoHIDInterfaceFound        = 2, /**< A compatible HID interface was not found in the device's Configuration Descriptor */
+                               HID_ENUMERROR_NoHIDDescriptorFound       = 3, /**< The HID descriptor was not found in the device's HID interface */
+                               HID_ENUMERROR_EndpointsNotFound          = 4, /**< Compatible HID endpoints were not found in the device's HID interface */
+                       };
+       
+               /* Function Prototypes: */
+                       /** Host interface configuration routine, to configure a given HID host interface instance using the Configuration
+                        *  Descriptor read from an attached USB device. This function automatically updates the given HID Host instance's
+                        *  state values and configures the pipes required to communicate with the interface if it is found within the
+                        *  device. This should be called once after the stack has enumerated the attached device, while the host state
+                        *  machine is in the Addressed state.
+                        *
+                        *  \note Once the device pipes are configured, the HID device's reporting protocol <b>must</b> be set via a call
+                        *        to either the \ref HID_Host_SetBootProtocol() or \ref HID_Host_SetReportProtocol() function.
+                        *
+                        *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class host configuration and state
+                        *  \param[in] ConfigDescriptorSize  Length of the attached device's Configuration Descriptor
+                        *  \param[in] DeviceConfigDescriptor  Pointer to a buffer containing the attached device's Configuration Descriptor
+                        *
+                        *  \return A value from the \ref HIDHost_EnumerationFailure_ErrorCodes_t enum
+                        */
+                       uint8_t HID_Host_ConfigurePipes(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo, uint16_t ConfigDescriptorSize,
+                                                       void* DeviceConfigDescriptor) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(3);
+
+
+                       /** Receives a HID IN report from the attached HID device, when a report has been received on the HID IN Data pipe.
+                        *  
+                        *  \note This function must only be called when the Host state machine is in the HOST_STATE_Configured state or the
+                        *        call will fail.
+                        *        \n\n
+                        *
+                        *  \note The destination buffer should be large enough to accommodate the largest report that the attached device
+                        *        can generate.
+                        *
+                        *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class host configuration and state
+                        *  \param[in] Buffer  Buffer to store the received report into
+                        *
+                        *  \return An error code from the \ref Pipe_Stream_RW_ErrorCodes_t enum
+                        */
+                       uint8_t HID_Host_ReceiveReport(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo, void* Buffer)
+                                                      ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
+
+                       #if !defined(HID_HOST_BOOT_PROTOCOL_ONLY)
+                       /** Receives a HID IN report from the attached device, by the report ID.
+                        *
+                        *  \note This function must only be called when the Host state machine is in the HOST_STATE_Configured state or the
+                        *        call will fail.
+                        *        \n\n
+                        *
+                        *  \note When the HID_HOST_BOOT_PROTOCOL_ONLY compile time token is defined, this method is unavailable.
+                        *
+                        *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class host configuration and state
+                        *  \param[in] ReportID  Report ID of the received report if ControlRequest is false, set by the to the Report ID to fetch
+                        *  \param[in] Buffer  Buffer to store the received report into
+                        *
+                        *  \return A value from the \ref USB_Host_SendControlErrorCodes_t enum
+                        */
+                       uint8_t HID_Host_ReceiveReportByID(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo, const uint8_t ReportID,
+                                                          void* Buffer) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(3);
+                       #endif
+                       
+                       /** Sends an OUT report to the currently attached HID device, using the device's OUT pipe if available or the device's
+                        *  Control pipe if not.
+                        *
+                        *  \note This function must only be called when the Host state machine is in the HOST_STATE_Configured state or the
+                        *        call will fail.
+                        *        \n\n
+                        *
+                        *  \note When the HID_HOST_BOOT_PROTOCOL_ONLY compile time token is defined, the ReportID parameter is removed
+                        *        from the parameter list of this function.
+                        *
+                        *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class host configuration and state
+                        *  \param[in] ReportID  Report ID of the report to send to the device, or 0 if the device does not use report IDs
+                        *  \param[in] Buffer  Buffer containing the report to send to the attached device
+                        *  \param[in] ReportSize  Report size in bytes to send to the attached device
+                        *
+                        *  \return An error code from the \ref USB_Host_SendControlErrorCodes_t enum if the DeviceUsesOUTPipe flag is set in
+                        *          the interface's state structure, a value from the \ref Pipe_Stream_RW_ErrorCodes_t enum otherwise
+                        */
+                       uint8_t HID_Host_SendReportByID(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo,
+                       #if !defined(HID_HOST_BOOT_PROTOCOL_ONLY)
+                                                       const uint8_t ReportID,
+                       #endif
+                                                       void* Buffer, const uint16_t ReportSize) ATTR_NON_NULL_PTR_ARG(1)
+                       #if !defined(HID_HOST_BOOT_PROTOCOL_ONLY)
+                                                       ATTR_NON_NULL_PTR_ARG(3);
+                       #else
+                                                       ATTR_NON_NULL_PTR_ARG(2);
+                       #endif
+
+                       /** Determines if a HID IN report has been received from the attached device on the data IN pipe.
+                        *
+                        *  \note This function must only be called when the Host state machine is in the HOST_STATE_Configured state or the
+                        *        call will fail.
+                        *
+                        *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class host configuration and state
+                        *
+                        *  \return Boolean true if a report has been received, false otherwise
+                        */
+                       bool HID_Host_IsReportReceived(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
+                       
+                       /** Switches the attached HID device's reporting protocol over to the Boot Report protocol mode, on supported devices.
+                        *
+                        *  \note When the HID_HOST_BOOT_PROTOCOL_ONLY compile time token is defined, this method must still be called
+                        *        to explicitly place the attached device into boot protocol mode before use.
+                        *
+                        *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class host configuration and state
+                        *
+                        *  \return \ref HID_ERROR_LOGICAL if the device does not support Boot Protocol mode, a value from the
+                        *          \ref USB_Host_SendControlErrorCodes_t enum otherwise
+                        */
+                       uint8_t HID_Host_SetBootProtocol(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
+
+                       #if !defined(HID_HOST_BOOT_PROTOCOL_ONLY)
+                       /** Switches the attached HID device's reporting protocol over to the standard Report protocol mode. This also retrieves
+                        *  and parses the device's HID report descriptor, so that the size of each report can be determined in advance.
+                        *
+                        *  \note Whether this function is used or not, the \ref CALLBACK_HIDParser_FilterHIDReportItem() callback from the HID
+                        *        Report Parser this function references <b>must</b> be implemented in the user code.
+                        *        \n\n
+                        *
+                        *  \note When the HID_HOST_BOOT_PROTOCOL_ONLY compile time token is defined, this method is unavailable.
+                        *
+                        *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class host configuration and state
+                        *
+                        *  \return A value from the \ref USB_Host_SendControlErrorCodes_t enum if an error occurs while retrieving the HID
+                        *          Report descriptor or the setting of the Report protocol, \ref HID_ERROR_LOGICAL if the HID interface does
+                        *          not have a valid \ref HID_ReportInfo_t structure set in its configuration, a mask of \ref HID_ERROR_LOGICAL
+                        *          and a value from the \ref HID_Parse_ErrorCodes_t otherwise
+                        */
+                       uint8_t HID_Host_SetReportProtocol(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
+                       #endif
+                       
+               /* Inline Functions: */
+                       /** General management task for a given Human Interface Class host class interface, required for the correct operation of
+                        *  the interface. This should be called frequently in the main program loop, before the master USB management task
+                        *  \ref USB_USBTask().
+                        *
+                        *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class host configuration and state
+                        */
+                       static inline void HID_Host_USBTask(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo);
+                       static inline void HID_Host_USBTask(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo)
+                       {
+                               (void)HIDInterfaceInfo;
+                       }               
+
+       /* Private Interface - For use in library only: */
+       #if !defined(__DOXYGEN__)
+               /* Macros: */
+                       #define HID_INTERFACE_CLASS             0x03
+                       
+                       #define HID_FOUND_DATAPIPE_IN           (1 << 0)
+                       #define HID_FOUND_DATAPIPE_OUT          (1 << 1)
+
+               /* Function Prototypes: */
+                       #if defined(__INCLUDE_FROM_HID_CLASS_HOST_C)
+                               static uint8_t DComp_HID_Host_NextHIDInterface(void* const CurrentDescriptor) ATTR_NON_NULL_PTR_ARG(1);
+                               static uint8_t DComp_NextHID(void* const CurrentDescriptor) ATTR_NON_NULL_PTR_ARG(1);
+                               static uint8_t DComp_HID_Host_NextHIDInterfaceEndpoint(void* const CurrentDescriptor) ATTR_NON_NULL_PTR_ARG(1);
+                       #endif  
+       #endif  
+       
+       /* Disable C linkage for C++ Compilers: */
+               #if defined(__cplusplus)
+                       }
+               #endif
+
+#endif
+
+/** @} */