MSP430 SPI&UART问题请教

大家好,
我是MSP430的初学者，遇到一些问题想麻烦大家指导我。

主要是想调试SPI串口的功能，测试情境如下:
我用lanchpad的MSP430G2553作为Master，用MSP-EXP430F5529作为Slave，
Master将资料从0x00每次递增加1、透过SPI传送给Slave，Slave接收再使用UART将资料传送PC，借此观察结果的正确性。

不过我用Access看回传值一直是错的(不是递增数值)，调试很久找不出问题所在，所以上来跟各位高手讨教，请大家指导我一下。

以下是我的程序 :

//Master

#include <msp430.h>

/*
 * main.c
 */
int main(void) {
     unsigned int data=0x00;
     WDTCTL = WDTPW + WDTHOLD;                  // Stop watchdog timer

     P1OUT = 0x00;                              // P1 setup for reset output
     P1DIR |= BIT5;

     // Set DCO Clock
     BCSCTL1 = CALBC1_1MHZ;
     DCOCTL = CALDCO_1MHZ;

     // SPI Initialize
     P1SEL = BIT1 + BIT2 + BIT4;
     P1SEL2 = BIT1 + BIT2 + BIT4;
     UCA0CTL0 |= UCCKPL + 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**

     // Reset SPI Slave
     P1OUT &= ~BIT5;                           // Now with SPI signals initialized,
     P1OUT |= BIT5;                            // reset slave
     __delay_cycles(100);
     // Wait for slave to initialize

     // Data Transmit
     for(;;)
     {
         while (!(IFG2 & UCA0TXIFG));              // USCI_A0 TX buffer ready?
         UCA0TXBUF = data;
         data++;
         __delay_cycles(1000);
     }
}

-----------------------------------------------------------------------------------------------------------------------------------------------------------

// Slave

#include <msp430.h>

/*
 * main.c
 */
int main(void) {
    WDTCTL = WDTPW | WDTHOLD;    // Stop watchdog timer

    // CLK Set
    UCSCTL3 |= SELREF_2;        // Set DCO FLL Reference = REFO
    UCSCTL4 |= SELA_2;          // Set ACLK = REFO
    __bis_SR_register(SCG0);    // Disable the FLL Control Loop
    UCSCTL0 = 0x0000;           // Will be Set Automatically by FLL

    UCSCTL1 = DCORSEL_2;        // 1 MHz range
    UCSCTL2 = FLLD_1 + 32;      // Set FLL to approximately 1 MHz:
                                // FLL divider result = 32768
                                // 32 * 32768 = "1 MHz"

    // SPI Initialize
    P3SEL = BIT0|BIT1|BIT2;                 // Set Pin Function for SPI Mode
    UCB0CTL1 |= UCSWRST;                    // Put State Machine in Reset
    UCB0CTL0 |= UCSYNC+UCMSB+UCCKPH;        // 3-pin, 8-bit SPI Master,MSB First,Mode 0(UCCKPL=0,UCCKPH=1)
    UCB0CTL1 &= ~UCSWRST;                   // SPI
    UCB0IE |= UCRXIE;                         // Enable USCI_A0 RX interrupt

    // UART Initialize
    P4SEL |= BIT4+BIT5;                       // P3.3,4 = USCI_A0 TXD/RXD
    UCA1CTL1 |= UCSWRST;                      // **Put state machine in reset**
    UCA1CTL1 |= UCSSEL_2;                     // SMCLK
    UCA1BR0 = 6;                              // 1MHz 9600 (see User's Guide)
    UCA1BR1 = 0;                              // 1MHz 9600
    UCA1MCTL = UCBRS_0 + UCBRF_13+UCOS16;     // Modln UCBRSx=0, UCBRFx=0,
    UCA1CTL1 &= ~UCSWRST;                     // **Initialize USCI state machine**


    __bis_SR_register(LPM0_bits + GIE);       // CPU off, enable interrupts
    return 0;
}

#pragma vector=USCI_B0_VECTOR
__interrupt void USCI_B0_ISR(void)
{
  while (!(UCA1IFG & UCTXIFG));              // USCI_A1 TX buffer ready?
  UCA1TXBUF = UCB0RXBUF;
}