DMA出现bug 无法将数据传输到目的地址 而将数据传输到其他地址？？？？？

建议参考下官网提供的例程

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//******************************************************************************
// MSP430F552x Demo - DMA0, Single transfer using ADC12 triggered by TimerB
//
// Description: This software uses TBCCR1 as a sample and convert input into
// the A0 of ADC12. ADC12IFG is used to trigger a DMA transfer and DMA
// interrupt triggers when DMA transfer is done. TB1 is set as an output and
// P1.0 is toggled when DMA ISR is serviced.
// ACLK = REFO = 32kHz, MCLK = SMCLK = default DCO 1048576Hz
//
// MSP430F552x
// -----------------
// /|\| XIN|-
// | | | 32kHz
// --|RST XOUT|-
// | |
// | P1.0|-->LED
// | P5.7|-->TB1 output
// | |
// | P6.0|<--A0
//
// Bhargavi Nisarga
// Texas Instruments Inc.
// April 2009
// Built with CCSv4 and IAR Embedded Workbench Version: 4.21
//******************************************************************************

#include <msp430.h>

unsigned int DMA_DST; // ADC conversion result is stored in this variable

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

P1OUT &= ~BIT0; // P1.0 clear
P1DIR |= BIT0; // P1.0 output
P5SEL |= BIT7; // P5.7/TB1 option select
P5DIR |= BIT7; // Output direction
P6SEL |= BIT0; // Enable A/D channel A0

//Setup Timer B0
TBCCR0 = 0xFFFE;
TBCCR1 = 0x8000;
TBCCTL1 = OUTMOD_3; // CCR1 set/reset mode
TBCTL = TBSSEL_2+MC_1+TBCLR; // SMCLK, Up-Mode

// Setup ADC12
ADC12CTL0 = ADC12SHT0_15+ADC12MSC+ADC12ON;// Sampling time, MSC, ADC12 on
ADC12CTL1 = ADC12SHS_3+ADC12CONSEQ_2; // Use sampling timer; ADC12MEM0
// Sample-and-hold source = CCI0B =
// TBCCR1 output
// Repeated-single-channel
ADC12MCTL0 = ADC12SREF_0+ADC12INCH_0; // V+=AVcc V-=AVss, A0 channel
ADC12CTL0 |= ADC12ENC;

// Setup DMA0
DMACTL0 = DMA0TSEL_24; // ADC12IFGx triggered
DMACTL4 = DMARMWDIS; // Read-modify-write disable
DMA0CTL &= ~DMAIFG;
DMA0CTL = DMADT_4+DMAEN+DMADSTINCR_3+DMAIE; // Rpt single tranfer, inc dst, Int
DMA0SZ = 1; // DMA0 size = 1

__data16_write_addr((unsigned short) &DMA0SA,(unsigned long) &ADC12MEM0);
// Source block address
__data16_write_addr((unsigned short) &DMA0DA,(unsigned long) &DMA_DST);
// Destination single address
__bis_SR_register(LPM0_bits + GIE); // LPM0 w/ interrupts
__no_operation(); // used for debugging
}

//------------------------------------------------------------------------------
// DMA Interrupt Service Routine
//------------------------------------------------------------------------------
#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
#pragma vector=DMA_VECTOR
__interrupt void DMA_ISR(void)
#elif defined(__GNUC__)
void __attribute__ ((interrupt(DMA_VECTOR))) DMA_ISR (void)
#else
#error Compiler not supported!
#endif
{
switch(__even_in_range(DMAIV,16))
{
case 0: break;
case 2: // DMA0IFG = DMA Channel 0
P1OUT ^= BIT0; // Toggle P1.0 - PLACE BREAKPOINT HERE AND CHECK DMA_DST VARIABLE
break;
case 4: break; // DMA1IFG = DMA Channel 1
case 6: break; // DMA2IFG = DMA Channel 2
case 8: break; // DMA3IFG = DMA Channel 3
case 10: break; // DMA4IFG = DMA Channel 4
case 12: break; // DMA5IFG = DMA Channel 5
case 14: break; // DMA6IFG = DMA Channel 6
case 16: break; // DMA7IFG = DMA Channel 7
default: break;
}
}