iic_drv.h

实现120无传感器变频输出

/***********************************************************************/
/*                                                                     */
/*  FILE        :iic_drv.h                                               */
/*  DATE        :2005-7-27 12:49                                */
/*  DESCRIPTION :Define IIC Functions                                  */
/*  CPU TYPE    :                                           */
/*  FUNCTION    :send and receive functions                                                                   */
/*     */
/*                                                                     */
/***********************************************************************/
#include "typedefine.h"
//#define DEVICEADDR_WR	(0xa0)
//#define DEVICEADDR_RD	(0xa1)
#ifndef IICDRV
#define IICDRV

#define DEVICEADDR 	(0x50)

#define SDADIR	pd7_0
#define SCLDIR	pd7_1
#define SDAPORT	p7_0
#define SCLPORT	p7_1



#define SETSDAIN		SDADIR = 0
#define SETSCLIN		SCLDIR = 0
#define SETSDAOUT	SDADIR = 1
#define PAGE_WIDTH 		(8)
#define RECEIVE_BUF_SIZE 		(8)

//#define NMOS
#ifdef NMOS
#define SETSCL	 SCLPORT = 1,SCLDIR = 1
#define SETSDA	 SDAPORT = 1,SDADIR = 1
#else
#define SETSCL	 SETSCLIN
#define SETSDA	 SETSDAIN
#endif

#define CLRSCL	 SCLPORT = 0,SCLDIR = 1
#define CLRSDA	 SDAPORT = 0,SDADIR = 1

static void iic_ini(void); 
static void iic_sta(void);                  /* set iic bus to START condition        */
static void iic_stop(void);                   /* set iic bus to STOP condition         */

static UINT_8 sendbyte(const UINT_8 data);          /* send a byte of data out from SDA pin  */
static UINT_8 readbyte();                     /* read a byte of data in from SDA pin   */
static void iic_sendack(const UINT_8 ack);    /* send an ACK or NOACK out from SDA pin */

BOOLEAN iic_byte_write(const SINT_8 dev_adr,const UINT_8 word_adr,UINT_8 data);           /* write a byte of data to EEPROM */
BOOLEAN iic_currentadr_read(const SINT_8 dev_adr, UINT_8 * const  rdram);  /* write a page of data to EEPROM */

BOOLEAN iic_page_write(const SINT_8 dev_adr,const UINT_8 word_adr,UINT_8 * data_point,const UINT_8 data_no);                                       /* read a byte of data at current EEPROM address       */
BOOLEAN iic_random_read(const SINT_8 dev_adr,const UINT_8 word_adr,UINT_8 * const  rdram);                   /* read a byte of data at the specified EEPROM address */
BOOLEAN iic_sequ_read(const SINT_8 dev_adr,const UINT_8 word_adr,UINT_8 data_no,UINT_8 *   rdram_array);        /* initiated by random address read and read data_no bytes sequentially */

#endif



//UINT_8 eeprom_data_send[TRANSMIT_BUF_SIZE];    /* data send buffer     */
//UINT_8 eeprom_data_rece[RECEIVE_BUF_SIZE];     /* data receive buffer  */