I2C interfacing with external EEPROM......

void I2CMEM_writeData(unsigned int addr,unsigned char num,unsigned char* buf) 
{
	unsigned char Haddr=0;
	//unsigned char upbyte = 0,lowbyte = 0;
	Haddr = (unsigned char)((addr & 0xFF00));
	while(!(I2CMEM_idle()));
	I2CMEM_start();
	I2CMEM_writeByte(MEMWRITE);
	I2CMEM_writeByte(Haddr);
	I2CMEM_writeByte((unsigned char)(addr & 0x00FF));

	while(num--)
	{
		//upbyte = (unsigned char)(((*buf)&(0xFF00))>>8);
		//lowbyte = (unsigned char)((*buf)&(0x00FF));
		I2CMEM_writeByte(*buf);
		//I2CMEM_writeByte(lowbyte);
		//I2CRTC_nak();
		buf++;
	}
	I2CMEM_stop();
}

void I2CMEM_readData(unsigned int addr,unsigned char num,unsigned char *ptrtemp)
{
	unsigned char Haddr = 0;
	Haddr = (unsigned char)((addr & 0xFF00));
	while(!(I2CMEM_idle()));
	I2CMEM_start();
	I2CMEM_writeByte(MEMWRITE);							  
      // device address with write operation 
	I2CMEM_writeByte(Haddr);	    // Higher Byte of the address
	I2CMEM_writeByte((unsigned char)(addr & 0x00FF));	// Lower Byte of  
                                                                                     //the address
	I2CMEM_start();
	I2CMEM_writeByte(MEMREAD);
	while(num--)
	{
		if(num > 0)
		{
			*ptrtemp = I2CMEM_readByte(ACK);
			//*ptrtemp = (((*ptrtemp)<<8)|I2CMEM_readByte(ACK));
			ptrtemp++;
		}
		else
		{
			*ptrtemp = I2CMEM_readByte(NO_ACK);
			//*ptrtemp = (((*ptrtemp)<8)|I2CMEM_readByte(NO_ACK));
		}
	}
	//I2CMEM_nak();
	I2CMEM_stop();
}