i2cif.h

来自「完整的基于Conxant平台的USB电视棒的WIN驱动程序。」· C头文件 代码 · 共 57 行

/*+++ *******************************************************************\ 
* 
*  Copyright and Disclaimer: 
*  
*     --------------------------------------------------------------- 
*     This software is provided "AS IS" without warranty of any kind, 
*     either expressed or implied, including but not limited to the 
*     implied warranties of noninfringement, merchantability and/or 
*     fitness for a particular purpose.
*     --------------------------------------------------------------- 
*   
*     Copyright (c) 2004 Conexant Systems, Inc. 
*     All rights reserved. 
*
\******************************************************************* ---*/ 

#ifndef _I2CIF_H_
#define _I2CIF_H_

// {279CF1DC-86EC-47e4-B50A-63CB7C7AA3F9}
const GUID I2C_IF_GUID = 
{ 
    0x279cf1dc, 0x86ec, 0x47e4, { 0xb5, 0xa, 0x63, 0xcb, 0x7c, 0x7a, 0xa3, 0xf9 } 
};

// IMPORTANT: If you modify this interface at all, generate 
// a new interface guid, not doing so could cause a crash.
class I2cIF{
public:
    // Increments the reference count for the calling interface on an 
    // object. QueryInferface calls addRef on the returned interface 
    // pointer on behalf of the caller.
    virtual INT       addRef()  = 0;
    // Decrements the reference count for the calling interface 
    // on a object. If the reference count on the object falls 
    // to 0, the object is freed from memory.
    virtual INT       release() = 0; 

    virtual BOOLEAN read( 
        BYTE   device_adr, 
        INT    size, 
        BYTE  *p_buf) = 0;

    virtual BOOLEAN write( 
        BYTE   device_adr, 
        INT    size, 
        BYTE  *p_buf) = 0;

    virtual BOOLEAN writeThenRead( 
        BYTE        device_adr, 
        INT         write_size, 
        const BYTE *p_write_buf,
        INT         read_size,
        BYTE       *p_read_buf) = 0;
};

#endif