MSP430G2955: MSP430 Master receiver I2C not working!!!

#include <msp430g2955.h>


/*
 * main.c
 */

//***declaration of global variable***************************
unsigned char *ptrRx;
unsigned char RXData[10];


int main(void) {
    WDTCTL =  WDTPW + WDTHOLD;//Stop the WDT to prevent reset
    BCSCTL1 = CALBC1_16MHZ;                    // Set DCO to 16MHz
    DCOCTL =  CALDCO_16MHZ;

    i2c_init(
            );

    while(1){
        i2c_read_interrupt_init(RXData,1);

    }

	
	return 0;
}
//initialization
void i2c_init(void){
    // configure P3.1(SDA) an P3.2(SCL) for I2C
    P3SEL =BIT1|BIT2;
    P3SEL2 &=~(BIT1|BIT2);

    //Ensure that the USCI_B0 is reset before the configuration
    UCB0CTL1 |=UCSWRST;
    //slve adrres with 7 bit
    UCB0CTL1 &=~UCSLA10;
    //set the MSP430 to master mode
    UCB0CTL0 |=UCMST|UCMODE_3|UCSYNC;
    //take USCi clock source from SMCLK
    UCB0CTL1|=UCSSEL_3;
    //configure the baud rate registers for 100Khz when sourcing from SMCLK,SMCLK=16Mhz
    UCB0BR0 =80;//lower byte of UCBRx
    UCB0BR1 =0;
    //writing the slave address
    UCB0I2CSA =0xAA;
    // Clear SW reset, take the USCI module out of reset
    UCB0CTL1 &=~UCSWRST;
    // enable Rx interrupt
    IE2 |=UCB0RXIE;

}

//receive function

void i2c_read_interrupt_init(unsigned char *rxbuf,unsigned char length){
    unsigned char i;
    //receiver mode
    UCB0CTL1 &=~UCTR;
    UCB0CTL1 |= UCTXSTT;                    // I2C start condition
    while (UCB0CTL1 & UCTXSTT);             // Ensure START condition got sent
    __bis_SR_register(LPM0 | GIE);        // Enter LPM0 w/ interrupt

    for(i=0;i<length;i++){
    while(!(IFG2&UCB0RXIFG));     //wait tiill we receive the data
    *rxbuf=RXByte;
    rxbuf++;
    }
    if(length==1){
        //stop reception
        UCB0CTL1 |=UCTXSTP;
    }
}
// interrupt
#pragma vector = USCIAB0RX_VECTOR
__interrupt void USCIAB0RX_ISR(void)
{
    //clear interrrupt flag
  RXByte = UCB0RXBUF;                       // Get RX data
  __bic_SR_register_on_exit(LPM0);        // Exit LPM0
}