audgenericrequest.h

来自「at91sam9260-ek library file」· C头文件 代码 · 共 84 行

/* ----------------------------------------------------------------------------
 *         ATMEL Microcontroller Software Support 
 * ----------------------------------------------------------------------------
 * Copyright (c) 2008, Atmel Corporation
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//------------------------------------------------------------------------------
/// \unit
/// !Purpose
/// 
/// Constants for using USB audio SETUP requests.
///
/// !Usage
/// 
/// - For a USB device:
///     -# After receiving an Audio request from the host, use
///        AUDGenericRequest_GetEntity to determine the target Unit or Terminal.
///     -# After receiving an Audio request from the host, use
///        AUDGenericRequest_GetInterface to know which interface is referenced.
//------------------------------------------------------------------------------

#ifndef AUDGENERICREQUEST_H
#define AUDGENERICREQUEST_H

//------------------------------------------------------------------------------
//         Headers
//------------------------------------------------------------------------------

#include <usb/common/core/USBGenericRequest.h>

//------------------------------------------------------------------------------
//         Definitions
//------------------------------------------------------------------------------

//------------------------------------------------------------------------------
/// \page "Audio request codes"
/// This page lists the codes of the existing Audio requests.
/// 
/// !Codes
/// - AUDGenericRequest_SETCUR
/// - AUDGenericRequest_GETCUR

/// SET_CUR request code.
#define AUDGenericRequest_SETCUR                0x01

/// GET_CUR request code.
#define AUDGenericRequest_GETCUR                0x81
//------------------------------------------------------------------------------

//------------------------------------------------------------------------------
//         Exported functions
//------------------------------------------------------------------------------

extern unsigned char AUDGenericRequest_GetEntity(
    const USBGenericRequest *request);
extern unsigned char AUDGenericRequest_GetInterface(
    const USBGenericRequest *request);

#endif //#ifndef AUDGENERICREQUEST_H