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need help with TC74 temperature sensor

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rashidme

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below is my code to display temperature on lcd. I am using PicDem 2 Plus board along with MPLab IDE. I don't seem to get anything on the lcd screen. The lcd is working fine since I tried writing to it and it displays it. I think the problem is where i am reading data off of the temp sensor.
any help please, thank you.
Code:
#pragma code
void main()
{	
	unsigned char i2c_addr = 0x9A;                //b'10011010;
	unsigned char i2c_addr_read = 0x9B;       //b'10011011
	unsigned char i2c_tempRegAddr = 0x00;
	unsigned char readTemp='a';
	
        TRISB = 0x00;	//port b bits all output

	XLCDInit();	//initialize lcd	
	XLCDClear();	//clear LCD
	XLCDCursorOnBlinkOn();	//blinking cursor	
	XLCDL1home();	//go to line 1

	OpenI2C(MASTER, SLEW_ON);

	StartI2C();			    //start condition
	WriteI2C(i2c_addr);	           //select which i2c device
	AckI2C();                             //acknowledge condition
	WriteI2C(i2c_tempRegAddr); //select temperature register
	AckI2C();
	StopI2C();
	
	while (1) 
	{
		StartI2C();
		WriteI2C(i2c_addr_read);	//read address
		AckI2C();
			if (DataRdyI2C())
			{
			readTemp = getcI2C();
			PORTB = readTemp;
			XLCDPut(readTemp);
			}
		//readTemp = ReadI2C();		//grab byte
				

		StopI2C();
	}
}
 
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