422 lines
21 KiB
C
422 lines
21 KiB
C
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/***********************************************************************
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* $Id:: mw_usbd_hiduser.h 202 2011-06-12 21:50:01Z usb06052 $
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*
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* Project: USB device ROM Stack
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*
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* Description:
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* HID Custom User Module Definitions.
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*
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***********************************************************************
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* Copyright(C) 2011, NXP Semiconductor
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* All rights reserved.
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*
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* Software that is described herein is for illustrative purposes only
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* which provides customers with programming information regarding the
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* products. This software is supplied "AS IS" without any warranties.
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* NXP Semiconductors assumes no responsibility or liability for the
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* use of the software, conveys no license or title under any patent,
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* copyright, or mask work right to the product. NXP Semiconductors
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* reserves the right to make changes in the software without
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* notification. NXP Semiconductors also make no representation or
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* warranty that such application will be suitable for the specified
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* use without further testing or modification.
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**********************************************************************/
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#ifndef __HIDUSER_H__
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#define __HIDUSER_H__
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#include "mw_usbd.h"
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#include "mw_usbd_hid.h"
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#include "mw_usbd_core.h"
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/** \file
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* \brief Human Interface Device (HID) API structures and function prototypes.
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*
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* Definition of functions exported by ROM based HID function driver.
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*
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*/
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/** \ingroup Group_USBD
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* @defgroup USBD_HID HID Class Function Driver
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* \section Sec_HIDModDescription Module Description
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* HID Class Function Driver module. This module contains an internal implementation of the USB HID Class.
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* User applications can use this class driver instead of implementing the HID class manually
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* via the low-level HW and core APIs.
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*
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* This module is designed to simplify the user code by exposing only the required interface needed to interface with
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* Devices using the USB HID Class.
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*/
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/** \brief HID report descriptor data structure.
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* \ingroup USBD_HID
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*
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* \details This structure is used as part of HID function driver initialization
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* parameter structure \ref USBD_HID_INIT_PARAM. This structure contains
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* details of a report type supported by the application. An application
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* can support multiple report types as a single HID device. The application
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* should define this report type data struture per report it supports and
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* the array of reoprt types to USBD_HID_API::init() through \ref USBD_HID_INIT_PARAM
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* structure.
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*
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* \note All descriptor pointers assigned in this structure should be on 4 byte
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* aligned address boundary.
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*
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*/
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typedef struct _HID_REPORT_T {
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uint16_t len; /**< Size of the report descriptor in bytes. */
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uint8_t idle_time; /**< This value is used by stack to respond to Set_Idle &
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GET_Idle requests for the specified report ID. The value
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of this field specified the rate at which duplicate reports
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are generated for the specified Report ID. For example, a
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device with two input reports could specify an idle rate of
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20 milliseconds for report ID 1 and 500 milliseconds for
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report ID 2.
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*/
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uint8_t __pad; /**< Padding space. */
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uint8_t* desc; /**< Report descriptor. */
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} USB_HID_REPORT_T;
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/** \brief USB descriptors data structure.
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* \ingroup USBD_HID
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*
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* \details This module exposes functions which interact directly with USB device stack's core layer.
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* The application layer uses this component when it has to implement custom class function driver or
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* standard class function driver which is not part of the current USB device stack.
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* The functions exposed by this interface are to register class specific EP0 handlers and corresponding
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* utility functions to manipulate EP0 state machine of the stack. This interface also exposes
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* function to register custom endpoint interrupt handler.
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*
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*/
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typedef struct USBD_HID_INIT_PARAM
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{
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/* memory allocation params */
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uint32_t mem_base; /**< Base memory location from where the stack can allocate
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data and buffers. \note The memory address set in this field
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should be accessible by USB DMA controller. Also this value
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should be aligned on 4 byte boundary.
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*/
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uint32_t mem_size; /**< The size of memory buffer which stack can use.
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\note The \em mem_size should be greater than the size
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returned by USBD_HID_API::GetMemSize() routine.*/
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/* HID paramas */
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uint8_t max_reports; /**< Number of HID reports supported by this instance
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of HID class driver.
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*/
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uint8_t pad[3];
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uint8_t* intf_desc; /**< Pointer to the HID interface descriptor within the
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descriptor array (\em high_speed_desc) passed to Init()
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through \ref USB_CORE_DESCS_T structure.
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*/
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USB_HID_REPORT_T* report_data; /**< Pointer to an array of HID report descriptor
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data structure (\ref USB_HID_REPORT_T). The number
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of elements in the array should be same a \em max_reports
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value. The stack uses this array to respond to
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requests recieved for various HID report descriptor
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information. \note This array should be of global scope.
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*/
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/* user defined functions */
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/* required functions */
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/**
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* HID get report callback function.
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*
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* This function is provided by the application software. This function gets called
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* when host sends a HID_REQUEST_GET_REPORT request. The setup packet data (\em pSetup)
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* is passed to the callback so that application can extract the report ID, report
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* type and other information need to generate the report. \note HID reports are sent
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* via interrupt IN endpoint also. This function is called only when report request
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* is received on control endpoint. Application should implement \em HID_EpIn_Hdlr to
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* send reports to host via interrupt IN endpoint.
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*
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*
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* \param[in] hHid Handle to HID function driver.
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* \param[in] pSetup Pointer to setup packet recived from host.
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* \param[in, out] pBuffer Pointer to a pointer of data buffer containing report data.
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* Pointer-to-pointer is used to implement zero-copy buffers.
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* See \ref USBD_ZeroCopy for more details on zero-copy concept.
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* \param[in] length Amount of data copied to destination buffer.
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* \return The call back should returns \ref ErrorCode_t type to indicate success or error condition.
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* \retval LPC_OK On success.
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* \retval ERR_USBD_UNHANDLED Event is not handled hence pass the event to next in line.
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* \retval ERR_USBD_xxx For other error conditions.
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*
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*/
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ErrorCode_t (*HID_GetReport)( USBD_HANDLE_T hHid, USB_SETUP_PACKET* pSetup, uint8_t** pBuffer, uint16_t* length);
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/**
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* HID set report callback function.
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*
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* This function is provided by the application software. This function gets called
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* when host sends a HID_REQUEST_SET_REPORT request. The setup packet data (\em pSetup)
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* is passed to the callback so that application can extract the report ID, report
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* type and other information need to modify the report. An application might choose
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* to ignore input Set_Report requests as meaningless. Alternatively these reports
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* could be used to reset the origin of a control (that is, current position should
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* report zero).
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*
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* \param[in] hHid Handle to HID function driver.
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* \param[in] pSetup Pointer to setup packet recived from host.
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* \param[in, out] pBuffer Pointer to a pointer of data buffer containing report data.
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* Pointer-to-pointer is used to implement zero-copy buffers.
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* See \ref USBD_ZeroCopy for more details on zero-copy concept.
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* \param[in] length Amount of data copied to destination buffer.
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* \return The call back should returns \ref ErrorCode_t type to indicate success or error condition.
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* \retval LPC_OK On success.
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* \retval ERR_USBD_UNHANDLED Event is not handled hence pass the event to next in line.
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* \retval ERR_USBD_xxx For other error conditions.
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*
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*/
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ErrorCode_t (*HID_SetReport)( USBD_HANDLE_T hHid, USB_SETUP_PACKET* pSetup, uint8_t** pBuffer, uint16_t length);
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/* optional functions */
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/**
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* Optional callback function to handle HID_GetPhysDesc request.
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*
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* The application software could provide this callback HID_GetPhysDesc handler to
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* handle get physical descriptor requests sent by the host. When host requests
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* Physical Descriptor set 0, application should return a special descriptor
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* identifying the number of descriptor sets and their sizes. A Get_Descriptor
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* request with the Physical Index equal to 1 should return the first Physical
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* Descriptor set. A device could possibly have alternate uses for its items.
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* These can be enumerated by issuing subsequent Get_Descriptor requests while
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* incrementing the Descriptor Index. A device should return the last descriptor
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* set to requests with an index greater than the last number defined in the HID
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* descriptor.
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* \note Applications which don't have physical descriptor should set this data member
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* to zero before calling the USBD_HID_API::Init().
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* \n
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*
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* \param[in] hHid Handle to HID function driver.
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* \param[in] pSetup Pointer to setup packet recived from host.
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* \param[in] pBuf Pointer to a pointer of data buffer containing physical descriptor
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* data. If the physical descriptor is in USB accessable memory area
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* application could just update the pointer or else it should copy
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* the descriptor to the address pointed by this pointer.
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* \param[in] length Amount of data copied to destination buffer or descriptor length.
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* \return The call back should returns \ref ErrorCode_t type to indicate success or error condition.
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* \retval LPC_OK On success.
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* \retval ERR_USBD_UNHANDLED Event is not handled hence pass the event to next in line.
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* \retval ERR_USBD_xxx For other error conditions.
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*
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*/
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ErrorCode_t (*HID_GetPhysDesc)( USBD_HANDLE_T hHid, USB_SETUP_PACKET* pSetup, uint8_t** pBuf, uint16_t* length);
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/**
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* Optional callback function to handle HID_REQUEST_SET_IDLE request.
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*
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* The application software could provide this callback to handle HID_REQUEST_SET_IDLE
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* requests sent by the host. This callback is provided to applications to adjust
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* timers associated with various reports, which are sent to host over interrupt
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* endpoint. The setup packet data (\em pSetup) is passed to the callback so that
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* application can extract the report ID, report type and other information need
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* to modify the report's idle time.
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* \note Applications which don't send reports on Interrupt endpoint or don't
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* have idle time between reports should set this data member to zero before
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* calling the USBD_HID_API::Init().
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* \n
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*
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* \param[in] hHid Handle to HID function driver.
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* \param[in] pSetup Pointer to setup packet recived from host.
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* \param[in] idleTime Idle time to be set for the specified report.
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* \return The call back should returns \ref ErrorCode_t type to indicate success or error condition.
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* \retval LPC_OK On success.
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* \retval ERR_USBD_UNHANDLED Event is not handled hence pass the event to next in line.
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* \retval ERR_USBD_xxx For other error conditions.
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*
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*/
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ErrorCode_t (*HID_SetIdle)( USBD_HANDLE_T hHid, USB_SETUP_PACKET* pSetup, uint8_t idleTime);
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/**
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* Optional callback function to handle HID_REQUEST_SET_PROTOCOL request.
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*
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* The application software could provide this callback to handle HID_REQUEST_SET_PROTOCOL
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* requests sent by the host. This callback is provided to applications to adjust
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* modes of their code between boot mode and report mode.
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* \note Applications which don't support protocol modes should set this data member
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* to zero before calling the USBD_HID_API::Init().
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* \n
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*
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* \param[in] hHid Handle to HID function driver.
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* \param[in] pSetup Pointer to setup packet recived from host.
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* \param[in] protocol Protocol mode.
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* 0 = Boot Protocol
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* 1 = Report Protocol
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* \return The call back should returns \ref ErrorCode_t type to indicate success or error condition.
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* \retval LPC_OK On success.
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* \retval ERR_USBD_UNHANDLED Event is not handled hence pass the event to next in line.
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* \retval ERR_USBD_xxx For other error conditions.
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*
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*/
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ErrorCode_t (*HID_SetProtocol)( USBD_HANDLE_T hHid, USB_SETUP_PACKET* pSetup, uint8_t protocol);
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/**
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* Optional Interrupt IN endpoint event handler.
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*
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* The application software could provide Interrupt IN endpoint event handler.
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* Application which send reports to host on interrupt endpoint should provide
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* an endpoint event handler through this data member. This data memeber is
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* ignored if the interface descriptor \em intf_desc doesn't have any IN interrupt
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* endpoint descriptor associated.
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* \n
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*
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* \param[in] hUsb Handle to the USB device stack.
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* \param[in] data Handle to HID function driver.
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* \param[in] event Type of endpoint event. See \ref USBD_EVENT_T for more details.
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* \return The call back should return \ref ErrorCode_t type to indicate success or error condition.
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* \retval LPC_OK On success.
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* \retval ERR_USBD_UNHANDLED Event is not handled hence pass the event to next in line.
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* \retval ERR_USBD_xxx For other error conditions.
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*
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*/
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ErrorCode_t (*HID_EpIn_Hdlr) (USBD_HANDLE_T hUsb, void* data, uint32_t event);
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/**
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* Optional Interrupt OUT endpoint event handler.
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*
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* The application software could provide Interrupt OUT endpoint event handler.
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* Application which recieves reports from host on interrupt endpoint should provide
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* an endpoint event handler through this data member. This data memeber is
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* ignored if the interface descriptor \em intf_desc doesn't have any OUT interrupt
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* endpoint descriptor associated.
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* \n
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*
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* \param[in] hUsb Handle to the USB device stack.
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* \param[in] data Handle to HID function driver.
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* \param[in] event Type of endpoint event. See \ref USBD_EVENT_T for more details.
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* \return The call back should return \ref ErrorCode_t type to indicate success or error condition.
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* \retval LPC_OK On success.
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* \retval ERR_USBD_UNHANDLED Event is not handled hence pass the event to next in line.
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* \retval ERR_USBD_xxx For other error conditions.
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*
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*/
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ErrorCode_t (*HID_EpOut_Hdlr) (USBD_HANDLE_T hUsb, void* data, uint32_t event);
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/* user overridable function */
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/**
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* Optional user overridable function to replace the default HID_GetReportDesc handler.
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*
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* The application software could override the default HID_GetReportDesc handler with their
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* own by providing the handler function address as this data member of the parameter
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* structure. Application which like the default handler should set this data member
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* to zero before calling the USBD_HID_API::Init() and also provide report data array
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* \em report_data field.
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* \n
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* \note
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*
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* \param[in] hUsb Handle to the USB device stack.
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* \param[in] data Pointer to the data which will be passed when callback function is called by the stack.
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* \param[in] event Type of endpoint event. See \ref USBD_EVENT_T for more details.
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* \return The call back should returns \ref ErrorCode_t type to indicate success or error condition.
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* \retval LPC_OK On success.
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* \retval ERR_USBD_UNHANDLED Event is not handled hence pass the event to next in line.
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* \retval ERR_USBD_xxx For other error conditions.
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*
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*/
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ErrorCode_t (*HID_GetReportDesc)(USBD_HANDLE_T hHid, USB_SETUP_PACKET* pSetup, uint8_t** pBuf, uint16_t* length);
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/**
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* Optional user overridable function to replace the default HID class handler.
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*
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* The application software could override the default EP0 class handler with their
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* own by providing the handler function address as this data member of the parameter
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* structure. Application which like the default handler should set this data member
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* to zero before calling the USBD_HID_API::Init().
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* \n
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||
|
|
* \note
|
||
|
|
*
|
||
|
|
* \param[in] hUsb Handle to the USB device stack.
|
||
|
|
* \param[in] data Pointer to the data which will be passed when callback function is called by the stack.
|
||
|
|
* \param[in] event Type of endpoint event. See \ref USBD_EVENT_T for more details.
|
||
|
|
* \return The call back should returns \ref ErrorCode_t type to indicate success or error condition.
|
||
|
|
* \retval LPC_OK On success.
|
||
|
|
* \retval ERR_USBD_UNHANDLED Event is not handled hence pass the event to next in line.
|
||
|
|
* \retval ERR_USBD_xxx For other error conditions.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
ErrorCode_t (*HID_Ep0_Hdlr) (USBD_HANDLE_T hUsb, void* data, uint32_t event);
|
||
|
|
|
||
|
|
} USBD_HID_INIT_PARAM_T;
|
||
|
|
|
||
|
|
/** \brief HID class API functions structure.
|
||
|
|
* \ingroup USBD_HID
|
||
|
|
*
|
||
|
|
* This structure contains pointers to all the function exposed by HID function driver module.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
typedef struct USBD_HID_API
|
||
|
|
{
|
||
|
|
/** \fn uint32_t GetMemSize(USBD_HID_INIT_PARAM_T* param)
|
||
|
|
* Function to determine the memory required by the HID function driver module.
|
||
|
|
*
|
||
|
|
* This function is called by application layer before calling pUsbApi->hid->Init(), to allocate memory used
|
||
|
|
* by HID function driver module. The application should allocate the memory which is accessible by USB
|
||
|
|
* controller/DMA controller.
|
||
|
|
* \note Some memory areas are not accessible by all bus masters.
|
||
|
|
*
|
||
|
|
* \param[in] param Structure containing HID function driver module initialization parameters.
|
||
|
|
* \return Returns the required memory size in bytes.
|
||
|
|
*/
|
||
|
|
uint32_t (*GetMemSize)(USBD_HID_INIT_PARAM_T* param);
|
||
|
|
|
||
|
|
/** \fn ErrorCode_t init(USBD_HANDLE_T hUsb, USBD_HID_INIT_PARAM_T* param)
|
||
|
|
* Function to initialize HID function driver module.
|
||
|
|
*
|
||
|
|
* This function is called by application layer to initialize HID function driver
|
||
|
|
* module. On successful initialization the function returns a handle to HID
|
||
|
|
* function driver module in passed param structure.
|
||
|
|
*
|
||
|
|
* \param[in] hUsb Handle to the USB device stack.
|
||
|
|
* \param[in, out] param Structure containing HID function driver module
|
||
|
|
* initialization parameters.
|
||
|
|
* \return Returns \ref ErrorCode_t type to indicate success or error condition.
|
||
|
|
* \retval LPC_OK On success
|
||
|
|
* \retval ERR_USBD_BAD_MEM_BUF Memory buffer passed is not 4-byte
|
||
|
|
* aligned or smaller than required.
|
||
|
|
* \retval ERR_API_INVALID_PARAM2 Either HID_GetReport() or HID_SetReport()
|
||
|
|
* callback are not defined.
|
||
|
|
* \retval ERR_USBD_BAD_DESC HID_HID_DESCRIPTOR_TYPE is not defined
|
||
|
|
* immediately after interface descriptor.
|
||
|
|
* \retval ERR_USBD_BAD_INTF_DESC Wrong interface descriptor is passed.
|
||
|
|
* \retval ERR_USBD_BAD_EP_DESC Wrong endpoint descriptor is passed.
|
||
|
|
*/
|
||
|
|
ErrorCode_t (*init)(USBD_HANDLE_T hUsb, USBD_HID_INIT_PARAM_T* param);
|
||
|
|
|
||
|
|
} USBD_HID_API_T;
|
||
|
|
|
||
|
|
/*-----------------------------------------------------------------------------
|
||
|
|
* Private functions & structures prototypes
|
||
|
|
*-----------------------------------------------------------------------------*/
|
||
|
|
/** @cond ADVANCED_API */
|
||
|
|
|
||
|
|
typedef struct _HID_CTRL_T {
|
||
|
|
/* pointer to controller */
|
||
|
|
USB_CORE_CTRL_T* pUsbCtrl;
|
||
|
|
/* descriptor pointers */
|
||
|
|
uint8_t* hid_desc;
|
||
|
|
USB_HID_REPORT_T* report_data;
|
||
|
|
|
||
|
|
uint8_t protocol;
|
||
|
|
uint8_t if_num; /* interface number */
|
||
|
|
uint8_t epin_adr; /* IN interrupt endpoint */
|
||
|
|
uint8_t epout_adr; /* OUT interrupt endpoint */
|
||
|
|
|
||
|
|
/* user defined functions */
|
||
|
|
ErrorCode_t (*HID_GetReport)( USBD_HANDLE_T hHid, USB_SETUP_PACKET* pSetup, uint8_t** pBuffer, uint16_t* length);
|
||
|
|
ErrorCode_t (*HID_SetReport)( USBD_HANDLE_T hHid, USB_SETUP_PACKET* pSetup, uint8_t** pBuffer, uint16_t length);
|
||
|
|
ErrorCode_t (*HID_GetPhysDesc)( USBD_HANDLE_T hHid, USB_SETUP_PACKET* pSetup, uint8_t** pBuf, uint16_t* length);
|
||
|
|
ErrorCode_t (*HID_SetIdle)( USBD_HANDLE_T hHid, USB_SETUP_PACKET* pSetup, uint8_t idleTime);
|
||
|
|
ErrorCode_t (*HID_SetProtocol)( USBD_HANDLE_T hHid, USB_SETUP_PACKET* pSetup, uint8_t protocol);
|
||
|
|
|
||
|
|
/* virtual overridable functions */
|
||
|
|
ErrorCode_t (*HID_GetReportDesc)(USBD_HANDLE_T hHid, USB_SETUP_PACKET* pSetup, uint8_t** pBuf, uint16_t* length);
|
||
|
|
|
||
|
|
}USB_HID_CTRL_T;
|
||
|
|
|
||
|
|
/** @cond DIRECT_API */
|
||
|
|
extern uint32_t mwHID_GetMemSize(USBD_HID_INIT_PARAM_T* param);
|
||
|
|
extern ErrorCode_t mwHID_init(USBD_HANDLE_T hUsb, USBD_HID_INIT_PARAM_T* param);
|
||
|
|
/** @endcond */
|
||
|
|
|
||
|
|
/** @endcond */
|
||
|
|
|
||
|
|
#endif /* __HIDUSER_H__ */
|