i2c.h

来自「开发环境ADSP6++,EBF_561开发板所有源代码」· C头文件 代码 · 共 48 行

#ifndef  __I2C_DEFINED
#define __I2C_DEFINED

//--------------------------------------------------------------------------//
// Header files																//
//--------------------------------------------------------------------------//
#include "../CPLD.h"
//--------------------------------------------------------------------------//
// Definations
//--------------------------------------------------------------------------//
//#define INL inline	// Large Code Size/Little Stack usage
#define INL			// Small Code Size/Larger Stack usage
//--------------------------------------------------------------------------//
// Symbolic constants														//
//--------------------------------------------------------------------------//
#define SCLK		0x4000		//PF14
#define SDATA		0x8000		//PF15

// 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 SAA7113_IDENT_W	0x4A	// Video Encoder
#define SAA7113_IDENT_R	0x4B

#define ADV7181_IDENT_W	0x40
#define ADV7181_IDENT_R	0x41



//--------------------------------------------------------------------------//
// 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