CCS/MSP430G2553: SPI read data problem

Tool/software: Code Composer Studio

Hi

I wrote this program for communication between TI MSP430G2553 and NPX MFRC522 RFID reader.

I trying to read the Version of the ic (register adress 0x37) so i send over MOSI channel the address like datasheet instructions:

In the arduino version of mfrc522 library code, after sent the address have to sent a dummy byte. In this manner the after the ic had process the request it "shift" the required value in the master RX register (I think).

After the address was sent over the MOSI I recive in the RX register the value 0xFF (i think this is normal) but when I send the dummy byte (and I should be getting the value of the version register) i recive 0xFF again.

What's the problem? Thanks in advance

I attach the code below

#include <msp430.h>
#include <stdint.h>
#include <stdio.h>

volatile char received_ch = 0;

uint8_t SPI_write(uint8_t data){
    //IFG2 &=~(UCA0RXIFG+UCA0TXIFG);
    P1OUT &= (~BIT5); // Select Device
    UCA0TXBUF = data; // setting TXBUF clears the TXIFG flag
    while (!(IFG2 & UCA0RXIFG));
         // wait for SPI TX/RX to finish

    P1OUT |= BIT5;
    return UCA0RXBUF;
}



#define SPI_read() (SPI_write(0x00)) // Read by sending a dummy byte

int main(void)
{
    WDTCTL = WDTPW + WDTHOLD; // Stop WDT

    P1OUT |= BIT5;
    P1DIR |= BIT5;
    P1SEL = BIT1 | BIT2 | BIT4;
    P1SEL2 = BIT1 | BIT2 | BIT4;

    UCA0CTL1 = UCSWRST;
    UCA0CTL0 |= UCCKPH + UCMSB + UCMST + UCSYNC; // 3-pin, 8-bit SPI master
    UCA0CTL1 |= UCSSEL_2; // SMCLK
    UCA0BR0 |= 0x02; // /2
    UCA0BR1 = 0; //
    UCA0MCTL = 0; // No modulation
    UCA0CTL1 &= ~UCSWRST; // **Initialize USCI state machine**
    IE2 |= UCA0RXIE;

    SPI_write((0x37<<1) | 0x80);
    //for(x = 2000; x > 0; x--);
    int value = SPI_write(0);

}