i2c0_drv.h

意法半导体ARM7 STR710+DM9000A的TCP/IP实现

//----------------------------------------------------------------------------
// Filename : I2C0_drv.h
//----------------------------------------------------------------------------
//
// Copyright (c) 2008,东莞太平计算机科技有限公司
// All rights reserved.
// www.pacific-gold.com.cn
//
// 历史版本:
//
//    版本:  V1.0
//    作者:  罗先能
//    日期:  2007-12-21
//    描述:  建立第一版本
//
//                                
// 描述:
//    1. 设备FM24CL04的驱动程序
//
//
//----------------------------------------------------------------------------


#ifndef __I2C0_DRV_H__
#define __I2C0_DRV_H__
//============================================================================


//----------------------------------------------------------------------------
// Includes
//----------------------------------------------------------------------------
#include "71x_lib.h"


//----------------------------------------------------------------------------
// Global Constant Definitions
//----------------------------------------------------------------------------
// address offset define
typedef enum
{   I2C0_TEST      = 0,     /* store test datas of I2C0                 */
    TAG_HEAD       = 0x04,  /* store start address of tag begin datas   */
    TAG_TAIL       = 0x08,  /* store end address of tag end datas       */
    TAG_AREA_HEAD  = 0x0b,  /* store start address of tag data area     */
    TAG_AREA_TAIL  = 0x10   /* store end address of tag data area       */
} TAG_DEF;


typedef struct
{
    u32 *head;
    u32 *tail;
    u32 *area_head;
    u32 *area_tail;
} TAG;


//----------------------------------------------------------------------------
// Global Varable Declare
//----------------------------------------------------------------------------
extern TAG i2c_tag;

//----------------------------------------------------------------------------
// Global Function Declare
//----------------------------------------------------------------------------
extern bool i2c0_init(void);                       // initialize I2C0
extern bool i2c0_open(void);                       // open device I2C0
extern bool i2c0_close(void);                      // close device I2C0
extern  u32 i2c0_read( TAG_DEF addr);              // read 4bytes data from I2C0
extern bool i2c0_write(TAG_DEF addr, u32 data);    // write 4bytes data to I2C0
extern bool i2c0_test(void);                       // only test  the divice on I2C0


//============================================================================
#endif