+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2011.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2011 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 Device mode driver for the library USB HID Class driver.
- *
- * Device 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 USB module driver
- * dispatch header located in LUFA/Drivers/USB.h.
- */
-
-/** \ingroup Group_USBClassHID
- * \defgroup Group_USBClassHIDDevice HID Class Device 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/Device/HID.c <i>(Makefile source module name: LUFA_SRC_USBCLASS)</i>
- *
- * \section Sec_ModDescription Module Description
- * Device Mode USB Class driver framework interface, for the HID USB Class driver.
- *
- * @{
- */
-
-#ifndef _HID_CLASS_DEVICE_H_
-#define _HID_CLASS_DEVICE_H_
-
- /* Includes: */
- #include "../../USB.h"
- #include "../Common/HID.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/USB.h instead.
- #endif
-
- /* Public Interface - May be used in end-application: */
- /* Type Defines: */
- /** \brief HID Class Device Mode Configuration and State Structure.
- *
- * Class state structure. An instance of this structure should be made for each HID interface
- * within the user application, and passed to each of the HID class driver functions as the
- * \c HIDInterfaceInfo parameter. This stores each HID interface's configuration and state information.
- *
- * \note Due to technical limitations, the HID device class driver does not utilize a separate OUT
- * endpoint for host->device communications. Instead, the host->device data (if any) is sent to
- * the device via the control endpoint.
- */
- typedef struct
- {
- const struct
- {
- uint8_t InterfaceNumber; /**< Interface number of the HID interface within the device. */
-
- uint8_t ReportINEndpointNumber; /**< Endpoint number of the HID interface's IN report endpoint. */
- uint16_t ReportINEndpointSize; /**< Size in bytes of the HID interface's IN report endpoint. */
- bool ReportINEndpointDoubleBank; /**< Indicates if the HID interface's IN report endpoint should use double banking. */
-
- void* PrevReportINBuffer; /**< Pointer to a buffer where the previously created HID input report can be
- * stored by the driver, for comparison purposes to detect report changes that
- * must be sent immediately to the host. This should point to a buffer big enough
- * to hold the largest HID input report sent from the HID interface. If this is set
- * to \c NULL, it is up to the user to force transfers when needed in the
- * \ref CALLBACK_HID_Device_CreateHIDReport() callback function.
- *
- * \note Due to the single buffer, the internal driver can only correctly compare
- * subsequent reports with identical report IDs. In multiple report devices,
- * this buffer should be set to \c NULL and the decision to send reports made
- * by the user application instead.
- */
- uint8_t PrevReportINBufferSize; /**< Size in bytes of the given input report buffer. This is used to create a
- * second buffer of the same size within the driver so that subsequent reports
- * can be compared. If the user app is to determine when reports are to be sent
- * exclusively (i.e. \ref PrevReportINBuffer is \c NULL) this value must still be
- * set to the size of the largest report the device can issue to the host.
- */
- } 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 UsingReportProtocol; /**< Indicates if the HID interface is set to Boot or Report protocol mode. */
- uint16_t IdleCount; /**< Report idle period, in milliseconds, set by the host. */
- uint16_t IdleMSRemaining; /**< Total number of milliseconds remaining before the idle period elapsed - this
- * should be decremented by the user application if non-zero each millisecond. */
- } State; /**< State data for the USB class interface within the device. All elements in this section
- * are reset to their defaults when the interface is enumerated.
- */
- } USB_ClassInfo_HID_Device_t;
-
- /* Function Prototypes: */
- /** Configures the endpoints of a given HID interface, ready for use. This should be linked to the library
- * \ref EVENT_USB_Device_ConfigurationChanged() event so that the endpoints are configured when the configuration
- * containing the given HID interface is selected.
- *
- * \param[in,out] HIDInterfaceInfo Pointer to a structure containing a HID Class configuration and state.
- *
- * \return Boolean \c true if the endpoints were successfully configured, \c false otherwise.
- */
- bool HID_Device_ConfigureEndpoints(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
-
- /** Processes incoming control requests from the host, that are directed to the given HID class interface. This should be
- * linked to the library \ref EVENT_USB_Device_ControlRequest() event.
- *
- * \param[in,out] HIDInterfaceInfo Pointer to a structure containing a HID Class configuration and state.
- */
- void HID_Device_ProcessControlRequest(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
-
- /** General management task for a given HID 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 configuration and state.
- */
- void HID_Device_USBTask(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
-
- /** HID class driver callback for the user creation of a HID IN report. This callback may fire in response to either
- * HID class control requests from the host, or by the normal HID endpoint polling procedure. Inside this callback the
- * user is responsible for the creation of the next HID input report to be sent to the host.
- *
- * \param[in,out] HIDInterfaceInfo Pointer to a structure containing a HID Class configuration and state.
- * \param[in,out] ReportID If preset to a non-zero value, this is the report ID being requested by the host. If zero,
- * this should be set to the report ID of the generated HID input report (if any). If multiple
- * reports are not sent via the given HID interface, this parameter should be ignored.
- * \param[in] ReportType Type of HID report to generate, either \ref HID_REPORT_ITEM_In or \ref HID_REPORT_ITEM_Feature.
- * \param[out] ReportData Pointer to a buffer where the generated HID report should be stored.
- * \param[out] ReportSize Number of bytes in the generated input report, or zero if no report is to be sent.
- *
- * \return Boolean \c true to force the sending of the report even if it is identical to the previous report and still within
- * the idle period (useful for devices which report relative movement), \c false otherwise.
- */
- bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo,
- uint8_t* const ReportID,
- const uint8_t ReportType,
- void* ReportData,
- uint16_t* const ReportSize) ATTR_NON_NULL_PTR_ARG(1)
- ATTR_NON_NULL_PTR_ARG(2) ATTR_NON_NULL_PTR_ARG(4) ATTR_NON_NULL_PTR_ARG(5);
-
- /** HID class driver callback for the user processing of a received HID OUT report. This callback may fire in response to
- * either HID class control requests from the host, or by the normal HID endpoint polling procedure. Inside this callback
- * the user is responsible for the processing of the received HID output report from the host.
- *
- * \param[in,out] HIDInterfaceInfo Pointer to a structure containing a HID Class configuration and state.
- * \param[in] ReportID Report ID of the received output report. If multiple reports are not received via the given HID
- * interface, this parameter should be ignored.
- * \param[in] ReportType Type of received HID report, either \ref HID_REPORT_ITEM_Out or \ref HID_REPORT_ITEM_Feature.
- * \param[in] ReportData Pointer to a buffer where the received HID report is stored.
- * \param[in] ReportSize Size in bytes of the received report from the host.
- */
- void CALLBACK_HID_Device_ProcessHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo,
- const uint8_t ReportID,
- const uint8_t ReportType,
- const void* ReportData,
- const uint16_t ReportSize) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(4);
-
- /* Inline Functions: */
- /** Indicates that a millisecond of idle time has elapsed on the given HID interface, and the interface's idle count should be
- * decremented. This should be called once per millisecond so that hardware key-repeats function correctly. It is recommended
- * that this be called by the \ref EVENT_USB_Device_StartOfFrame() event, once SOF events have been enabled via
- * \ref USB_Device_EnableSOFEvents().
- *
- * \param[in,out] HIDInterfaceInfo Pointer to a structure containing a HID Class configuration and state.
- */
- static inline void HID_Device_MillisecondElapsed(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo) ATTR_ALWAYS_INLINE ATTR_NON_NULL_PTR_ARG(1);
- static inline void HID_Device_MillisecondElapsed(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo)
- {
- if (HIDInterfaceInfo->State.IdleMSRemaining)
- HIDInterfaceInfo->State.IdleMSRemaining--;
- }
-
- /* Disable C linkage for C++ Compilers: */
- #if defined(__cplusplus)
- }
- #endif
-
-#endif
-
-/** @} */
-
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