i2c.h

blackfin开发板 BF533-CMOS：OV7648 开发代码 开发环境为visul dsp 3.5

#ifndef  __I2C_DEFINED
#define __I2C_DEFINED

//--------------------------------------------------------------------------//
// Header files																//
//--------------------------------------------------------------------------//
#include <sys\exception.h>
#include <cdefBF533.h>
#include <ccblkfn.h>
#include <sysreg.h>
//--------------------------------------------------------------------------//
// Definations
//--------------------------------------------------------------------------//
//#define INL inline	// Large Code Size/Little Stack usage
#define INL			// Small Code Size/Larger Stack usage
//--------------------------------------------------------------------------//
// Symbolic constants														//
//--------------------------------------------------------------------------//
#define SCLK		0x0010		// PF4
#define SDATA		0x0004		// PF2

// bits for PortA in Flash A conserning Reset.
//#define RST_SAA7113	0x04;

//I need to know RST,SCLK and SDATA pin first !!!

// I2C Ident Addresses.
/*************NOTED!**************************
     For W,if RTS0 strapped to ground , IDENT = 0x48
     For R,if RTS0 strapped to ground , IDENT = 0x49
*********************************************/
#define ADV7181_IDENT_W	0x40
#define ADV7181_IDENT_R	0x41

#define ADV7171_IEDNT_W 0x54
#define ADV7171_IEDNT_R 0x55 

#define MT9V11X_IDENT_W 0xba
#define MT9V11X_IDENT_R 0xbb

#define OV7648_IDENT_W 0x42
#define OV7648_IDENT_R 0x43

// addresses for CPLD
#define pLED  				(volatile unsigned char *)0x203C0000
#define p7Section 			(volatile unsigned char *)0x203C4000
#define pCtrlReg1			(volatile unsigned char *)0x203C8000
#define pCtrlReg2			(volatile unsigned char *)0x203CC000
#define p1582BaseAddr		(volatile unsigned char *)0x203D0000
#define pNetBaseAddr		(volatile unsigned char *)0x203D4000
#define pSL811BaseAddr		(volatile unsigned char *)0x203D8000
#define pLcdBaseAddr		(volatile unsigned char *)0x203DC000

#define pIDECS0BaseAddr		(volatile unsigned short *)0x203E0000
#define pIDECS1BaseAddr		(volatile unsigned short *)0x203E4000
#define pNAND_CtrlBaseaAddr	(volatile unsigned char *)0x203E8000
#define pNAND_BaseaAddr		(volatile unsigned char *)0x203EC000
#define pSPI_CtrlBaseaAddr	(volatile unsigned char *)0x203F0000


//--------------------------------------------------------------------------//
// Prototypes																//
//--------------------------------------------------------------------------//
// in file I2C.c
bool I2C_Init(unsigned char identaddr);
bool I2C_Write(unsigned char data_out,unsigned char address);
bool I2C_Read(unsigned char *data_in, unsigned char address);

#endif __I2C_DEFINED