i2c_write.c

这是适用I/O口模拟的 I2C 程序

/*************************** Function  Message ****************************
** Funtion Name : I2C_WriteByte
** Arguments: wAddrressWritten  :  the  address of  the  memory  byte unit   
**            of  the E2prom  which will be written  and  the  written 
**            content  is   the  followed  argument : bContent ;
**            bContent  :  the  content  will be  written  to  the  byte 
**            unit  of the  E2Prom
** Return Value: TRUE :   write  successfully           
**               FALSE :  write  error
** Restrictions:   none
** created by: ZhangBin
** Last modified: 12/7/04 (MM/DD/YY)
** Description:  the main program  of the EOS System
***************************************************************************/
void    I2C_WriteByte(BYTE bAddrressWritten,  BYTE  bContent )
{
	BYTE i;

 	I2C_Start();

 	I2C_Txd(_WR_ID__);
 
 	I2C_Txd(bAddrressWritten);
 
        I2C_Txd(bContent);		
 
 	I2C_Stop();

 	I2C_DELAY();

};


/*************************** Function  Message ****************************
** Funtion Name : I2C_WritePage
** Arguments: wAddrressWritten  :  the  address of  the  memory  byte unit   
**            of  the E2prom  which will be written  and  the  written 
**            content  is   the  followed  argument : bContent ;
**            bContent  :  the  content  will be  written  to  the  byte 
**            unit  of the  E2Prom
** Return Value:  none
** Restrictions:   none
** created by: ZhangBin
** Last modified: 12/7/04 (MM/DD/YY)
** Description:  the main program  of the EOS System
***************************************************************************/
void    I2C_WritePage(WORD wHeadAddrress, BYTE* dptr, BYTE bLoop)
{
 	BYTE i;

 	I2C_Start();
 	I2C_Txd(WR_ID);
 
 	i = (BYTE)(wHeadAddrress >> 8);
 	I2C_Txd(i);
 	i = (BYTE)wHeadAddrress;	
 	I2C_Txd(i);

 	do{
    	I2C_Txd(*dptr++); 
    	I2C_DELAY();   
 	}while(--bLoop);
 
 	I2C_Stop();
 	DelayMs(10);
};

/*************************** Function  Message ****************************
** Funtion Name : I2C_WritePage
** Arguments: wAddrressWritten  :  the  address of  the  memory  byte unit   
**            of  the E2prom  which will be written  and  the  written 
**            content  is   the  followed  argument : bContent ;
**            bContent  :  the  content  will be  written  to  the  byte 
**            unit  of the  E2Prom
** Return Value: TRUE :   write  successfully           
**               FALSE :  write  error
** Restrictions:   none
** created by: ZhangBin
** Last modified: 12/7/04 (MM/DD/YY)
** Description:  note that the dptr pointer , if in bank2 or bank3, should 
**               setup  anoter  new  function
***************************************************************************/
void    I2C_WritePage2(BYTE	bHeadAddrress, bank2 BYTE* dptr, BYTE bLoop)
{
 	BYTE i;

 	I2C_Start();

 	I2C_Txd(WR_ID);
 
 	I2C_Txd(bHeadAddrress);

 	do{
    	I2C_Txd(*dptr++); 
    	I2C_DELAY();   
 	}while(--bLoop);
 
 	I2C_Stop();
 	DelayMs(10);
};

/*************************** Function  Message ****************************
** Funtion Name : I2C_Erase
** Arguments: wAddrressWritten  :  the  address of  the  memory  byte unit   
**            of  the E2prom  which will be written  and  the  written 
**            content  is   the  followed  argument : bContent ;
**            bContent  :  the  content  will be  written  to  the  byte 
**            unit  of the  E2Prom
** Return Value: TRUE :   write  successfully           
**               FALSE :  write  error
** Restrictions:   none
** created by: ZhangBin
** Last modified: 12/7/04 (MM/DD/YY)
** Description:  the main program  of the EOS System
***************************************************************************
void    I2C_Erase(WORD wHeadAddrress, BYTE  bData, BYTE bLoop)
{
 BYTE i;
 I2C_Start();
 I2C_Txd(WR_ID);
 
 i = (BYTE)(wHeadAddrress >> 8);
 I2C_Txd(i);
 i = (BYTE)wHeadAddrress;	
 I2C_Txd(i);

 do{
    I2C_Txd(bData); 
    I2C_DELAY();   
 }while(--bLoop);
 
 I2C_Stop();
 DelayMs(10);

};