Using MLX90614 with MSP430g2553

Hello,

I am trying to interface MLX90614

my code gets trapped in the while loops of the tempRead() function

any thoughts why would that happen?

#include <msp430g2553.h>

#ifndef TIMER0_A1_VECTOR
#define TIMER0_A1_VECTOR    TIMERA1_VECTOR
#define TIMER0_A0_VECTOR    TIMERA0_VECTOR
#endif

void FaultRoutine(void);
void ConfigWDT(void);
void ConfigClocks(void);
void ConfigLED(void);
void ConfigI2C(void);
int tempRead(void);
void ConfigTimerA2(void);

#define SLAVEAD 0x00

int TRead=0;
int temp;
int temp_high;
int temp_low;
unsigned int PEC;



int main(void) {
	volatile unsigned int i;

	ConfigWDT();
	ConfigClocks();
	ConfigLED();
	ConfigI2C();
	ConfigTimerA2();
	
	_BIS_SR(LPM0_bits+GIE);			//Enable global interrupts
	while(1){
	}
}

void ConfigWDT(void)
 {
 WDTCTL = WDTPW + WDTHOLD;                 // Stop watchdog timer
 }

void ConfigClocks(void)
 {
 if (CALBC1_1MHZ ==0xFF || CALDCO_1MHZ == 0xFF)
   FaultRoutine();		                    // If calibration data is erased
 				                            // run FaultRoutine()
  BCSCTL1 = CALBC1_1MHZ; 					// Set range
  DCOCTL = CALDCO_1MHZ;  					// Set DCO step + modulation
  BCSCTL3 |= LFXT1S_2;                      // LFXT1 = VLO
  IFG1 &= ~OFIFG;                           // Clear OSCFault flag
  BCSCTL2 |= SELM_0 + DIVM_2 + DIVS_2;      // MCLK = DCO/4, SMCLK = DCO/4
 }

void FaultRoutine(void)
 {
   P1OUT = BIT0;                            // P1.0 on (red LED)
   while(1); 			                    // TRAP
 }

void ConfigLED(void){
  P1DIR = BIT0+BIT6;                             // P1.0 (red) output
  P1OUT = 0;                                // LED off
}

void ConfigI2C(void){
	P1SEL |= BIT6 + BIT7;				 	// Assign I2C pins to USCI_B0
	P1SEL2|= BIT6 + BIT7; 					// Assign I2C pins to USCI_B0

	UCB0CTL1 |= UCSWRST;					// Reset I2C to configure

	IE2 |= UCB0TXIE + UCB0RXIE;				// enable TX and RX interrupts

	/* Configurign I2C */
	UCB0CTL0 = UCMST + UCMODE_3 + UCSYNC;	// Master, I2C mode, Synchronous
	UCB0CTL1 = UCSSEL_2 + UCSWRST;			// SMCLK, and keep as reset
	UCB0BR0 = 5;							// SMCLK/5 = 100 KHz
	UCB0BR1 = 0;
	UCB0I2CSA = SLAVEAD;					// Set Slave address

	UCB0CTL1 &= ~UCSWRST;					// Enable I2C
}



int tempRead(void){
	UCB0CTL1 |= UCTR+UCTXSTT;			// Start transmission
	while (!(IFG2 & UCB0TXIFG));
	UCB0TXBUF = 0x07;					// Access RAM, object Temperature 1
	//while(UCB0CTL1 & UCTXSTT);			// wait until start condition is sent
	while (!(IFG2 & UCB0TXIFG));
	UCB0CTL1 &= ~UCTR;				  // Change to RX

	while (UCB0CTL1 & UCTXSTT);
	UCB0CTL1 |= UCTXSTT;				// Start

	while(!(IFG2 & UCB0RXIFG));
	temp_low=UCB0RXBUF;					// Get low byte

	while(!(IFG2 & UCB0RXIFG));
	temp_high=UCB0RXBUF;				// Get high byte

	while(!(IFG2 & UCB0RXIFG));
	PEC=UCB0RXBUF;						// Read packet error code

	UCB0CTL1 |= UCTXSTP;				// Stop
	temp = temp_low | (temp_high << 8);	// Concatinate MSB and LSB
	temp = (temp*2 - 27315)/100;			// temperature in degree celceues
	return temp;
}


void ConfigTimerA2(void){
	CCTL0 = CCIE;							// Allow periodic interrupt
	CCR0 = 12000;							// Enable interrupts every 1 second
	TACTL = TASSEL_1 + MC_1;
}

#pragma vector=TIMER0_A0_VECTOR
__interrupt void Timer_A_ISR (void){
	TRead = tempRead();
	CCR0 +=12000;
}

I am new to MSP430 so I don't know much

I have been reading the manuals, I don't understand them very well though