CC2533 DMA 读写我没有成功。can you give me some advice?

 #include <ioCC2533.h>
#include "mcu_io.h"
#include "flash.h"
#include <string.h>
typedef unsigned char uint8;

typedef struct
{
  unsigned char SRCADDRH;           //源地址高8位
  unsigned char SRCADDRL;           //源地址低8位
  unsigned char DESTADDRH;          //目的地址高8位
  unsigned char DESTADDRL;          //目的地址低8位
  unsigned char VLEN        :3;     //长度域模式选择
  unsigned char LENH        :5;     //传输长度高字节
  unsigned char LENL        :8;     //传输长度低字节
  unsigned char WORDSIZE    :1;     //字节（byte）或字（word）传输
  unsigned char TMODE       :2;     //传输模式选择
  unsigned char TRIG        :5;     //触发事件选择
  unsigned char SRCINC      :2;     //源地址增量：-1/0/1/2
  unsigned char DESTINC     :2;     //目的地址增量：-1/0/1/2
  unsigned char IRQMASK     :1;     //中断屏蔽
  unsigned char M8          :1;     //7或8bit传输长度，仅在字节传输模式下适用
  unsigned char PRIORITY    :2;     //优先级
}DMA_CFG;

void sys_clk_init(void)
{
    CLKCONCMD = ~0x47;
}

void delay(unsigned int ts)
{
    unsigned int t;
    for(t=0;t<ts;t++);
    for(t=0;t<ts;t++);
    for(t=0;t<ts;t++);
    for(t=0;t<ts;t++);
}

void Flash_read(unsigned char pg,   \
               unsigned char offset,\
               unsigned char* str,  \
               unsigned int n)      \
{
    unsigned char *addr;
    unsigned char save;
    pg /= 32;
    save = MEMCTR;
    MEMCTR = (MEMCTR & 0xF8)|pg;
    addr = (unsigned char*)0x8000+offset+(pg%32)*1024;
    while(n--)
    {
        *str++ = *addr++;
    }
    MEMCTR = save;
}
#define debug
void main(void)
{
  unsigned char str[10] = {0};
  DMA_CFG dmaConfig;       //定义配置结构体
  unsigned char sourceString[]="chinaymj learn cc2533 RF mcu";      //源字符串
  MEMCTR  = (MEMCTR & 0xF8)|0;//flash 低32kb映射到xdata 0x8000后的空间
  sys_clk_init();
  P1_1 = 0;
  P1DIR = 0xff;
#define flash
#ifdef flash
#ifdef debug
  FADDRH = 0;
  FCTL |= 0x01;//清空32页的1Kb空间
  //配置DMA结构体
#endif
  dmaConfig.SRCADDRH=(unsigned char)((unsigned int)&sourceString >> 8);     //源地址
  dmaConfig.SRCADDRL=(unsigned char)((unsigned int)&sourceString);
  dmaConfig.DESTADDRH=(unsigned char)((unsigned int)&FWDATA >> 8);      //目的地址
  dmaConfig.DESTADDRL=(unsigned char)((unsigned int)&FWDATA);
  dmaConfig.VLEN=0x00;         //选择LEN作为传送长度
  dmaConfig.LENH=(unsigned char)((unsigned int)sizeof(sourceString) >> 8);  //传输长度
  dmaConfig.LENL=(unsigned char)((unsigned int)sizeof(sourceString));
  dmaConfig.WORDSIZE=0x00;     //选择字节（byte）传送
  dmaConfig.TMODE=0x00;        //single
  dmaConfig.TRIG=18;            //flash
  dmaConfig.SRCINC=0x01;       //源地址增量为1
  dmaConfig.DESTINC=0x00;      //目的地址增量为0
  dmaConfig.IRQMASK=0;         //DMA中断屏蔽
  dmaConfig.M8=0x00;           //选择8位长的字节来传送数据
  dmaConfig.PRIORITY=0x02;     //传输优先级为高
  DMA0CFGH=(unsigned char)((unsigned int)&dmaConfig >> 8);   //将配置结构体的首地址赋予相关SFR
  DMA0CFGL=(unsigned char)((unsigned int)&dmaConfig);
  DMAARM=0x01;                 //启用配置 进入工作状态
  DMAIRQ=0x00;                 //清中断标志位
  DMAREQ=0x01;                 //启动DMA传输
  FADDRL = 0;//设置flash页面地址
  FADDRH = 1;
  FCTL |= 0x02;         // Trigger the DMA writes.
  while (FCTL & 0x80);  // Wait until writing is done.
  while(!(DMAIRQ&0x01));       //等待传输结束
 // MEMCTR  = (MEMCTR & 0xF8)|1;
  Flash_read(1,0,str,10);
  if(str[0] == 'c')
    LED_ON;
  else
    LED_OFF;
#endif
 
// MEMCTR &= ~(1<<3);// ram
}

我实在是没的办法了，没的效果啊！