iee1.c

FREESCALE 16位单片机片MC9S12DG128的EEPROM读写操作程序,支持字节读写,字读写,长字读写,由产品验证,放心使用

**     Returns     :
**         ---             - Error code
** ===================================================================
*/
byte IEE1_GetWord(word Addr,word *Data)
{
  if ((Addr < EEPROMStart)||(Addr > (EEPROMEnd - 1))) /* Is given address out of EEPROM area array ? */
    return ERR_RANGE;                  /* If yes then error */
  *Data = *(volatile word *) Addr;     /* Return data from given address */
  return ERR_OK;                       /* OK */
}

/*
** ===================================================================
**     Method      :  IEE1_SetWait (bean IntEEPROM)
**
**     Description :
**         Method changes wait status of methods SetByte, SetActByte
**         and SetPage.
**     Parameters  :
**         NAME            - DESCRIPTION
**         Wait            - TRUE - methods wait till the write
**                           operation to EEPROM is finished,
**                           FALSE - methods do not wait for the end
**                           of write operation
**     Returns     : Nothing
** ===================================================================
*/
/*
void IEE1_SetWait(bool Wait)

**      This method is implemented as macro. See IEE1.h file.      **
*/

/*
** ===================================================================
**     Method      :  IEE1_Busy (bean IntEEPROM)
**
**     Description :
**         Method return status of EEPROM device
**     Parameters  : None
**     Returns     :
**         ---             - TRUE/FALSE - EEPROM is busy/ready
** ===================================================================
*/
/*
bool IEE1_Busy(void)

**      This method is implemented as macro. See IEE1.h file.      **
*/

/*
** ===================================================================
**     Method      :  IEE1_Init (bean IntEEPROM)
**
**     Description :
**         This method is internal. It is used by Processor Expert
**         only.
** ===================================================================
*/
void IEE1_Init(void)
{
  ECLKDIV = 74;                        /* Set up Clock Divider Register */
  IEE1_Wait = TRUE;                   /* No wait in loop to command complete */
}

/* END IEE1. */

/*
** ###################################################################
**
**     This file was created by UNIS Processor Expert 03.33 for 
**     the Motorola HCS12 series of microcontrollers.
**
** ###################################################################
*/

/*****************************************************
 * 在Eeprom的Addr位置写入word类型的数据Data
 *****************************************************/
void WriteEepromWord(word Addr, word Data)
{
	word tmpWord;
	
    while (IEE1_Busy());
	
 	IEE1_GetWord(Addr, &tmpWord);
	
	if (Data != tmpWord)
	{
	    while (IEE1_Busy());
 		IEE1_SetWord(Addr, Data);
	}
}



/*****************************************************
 * 在Eeprom的Addr位置读取word类型的数据
 *****************************************************/
word ReadEepromWord(word Addr)
{
    word tmpWord;
    
	while (IEE1_Busy());
	
 	IEE1_GetWord(Addr, &tmpWord);
	
	return tmpWord;
}




/*****************************************************
 * 在Eeprom的Addr位置写入byte类型的数据Data
 *****************************************************/
void WriteEepromByte(word Addr, byte Data)
{
	byte tmpByte;
	
	while (IEE1_Busy());

 	IEE1_GetByte(Addr, &tmpByte);

	if (Data != tmpByte)
	{
	    while (IEE1_Busy());

	    IEE1_SetByte(Addr, Data);
	}
}


/*****************************************************
 * 在Eeprom的Addr位置读取byte类型的数据
 *****************************************************/
byte ReadEepromByte(word Addr)
{
    byte tmpByte;
    
	while (IEE1_Busy());
	
	IEE1_GetByte(Addr, &tmpByte);
	
	return tmpByte;
}



/*
** ===================================================================
**     Method      :  IEE2_SetLong (bean IntEEPROM)
**
**     Description :
**         Method writes given long word to the given address in
**         EEPROM.
**     Parameters  :
**         NAME            - DESCRIPTION
**         Addr            - Address to EEPROM
**         Data            - Data to write
**     Returns     :
**         ---             - Error code
** ===================================================================
*/
byte IEE2_SetLong(word Addr,dword Data)
{
  if ((Addr < EEPROMStart)||(Addr > (EEPROMEnd - 3))) /* Is given address out of EEPROM area array ? */
    return ERR_RANGE;                  /* If yes then error */
  if (Addr & 0x0003)                   /* Aligned address ? */
    return ERR_NOTAVAIL;
  return (WriteSector(Addr,Data));     /* Write new content of given sector */
}

/*
** ===================================================================
**     Method      :  IEE2_GetLong (bean IntEEPROM)
**
**     Description :
**         Method reads long word from the given EEPROM address
**     Parameters  :
**         NAME            - DESCRIPTION
**         Addr            - Address to EEPROM
**       * Data            - Pointer to returned 32-bit data
**     Returns     :
**         ---             - Error code
** ===================================================================
*/
byte IEE2_GetLong(word Addr,dword *Data)
{
  if ((Addr < EEPROMStart)||(Addr > (EEPROMEnd - 3))) /* Is given address out of EEPROM area array ? */
    return ERR_RANGE;                  /* If yes then error */
  *Data = *(volatile dword *) Addr;    /* Return data from given address */
  return ERR_OK;                       /* OK */
}




/*****************************************************
 * 在Eeprom的Addr位置写入lonh类型的数据Data
 *****************************************************/
void WriteEepromDword(word Addr, dword Data)
{
	dword tmpDword;
	
    while (IEE1_Busy());
 	IEE2_GetLong(Addr, &tmpDword);
	if (Data != tmpDword)
	{
	    while (IEE1_Busy());
 		IEE2_SetLong(Addr, Data);
	}
}