大家好。我再调试BF609和ADC连接时遇到了问题，请大家帮忙看看。BF609通过EPPI2和ADC相连，ADC的采样时钟是40MHz。我准备采用FS0模式，也就是出发一次开始采集数据，然后就不管帧同步信号了。现在的问题是，DMA通道的状态寄存器看起来是对的，计数器减到了0，但是没有数据读进内存中，EPPI2的状态寄存器提示YFIFO出错。下面是配置的程序，请大家看看问题在哪儿，谢谢了！

/*-------------------config the DMA ---------------------------*/

     r0.h = 0x0002;

     r0.l = 0x240C;

     p0.h = hi(REG_EPPI2_CTL);

     p0.l = lo(REG_EPPI2_CTL);

     [p0] = r0;

     r1.l = lo(real_data);

     r1.h = hi(real_data);          

     p1.h = hi(REG_DMA31_ADDRSTART);

     p1.l = lo(REG_DMA31_ADDRSTART);

     [p1] = r1;

     r1 = 128;

     p1.h = hi(REG_DMA31_XCNT);

     p1.l = lo(REG_DMA31_XCNT);

     [p1] = r1;

     r1 = 2;

     p1.h = hi(REG_DMA31_XMOD);

     p1.l = lo(REG_DMA31_XMOD);

     [p1] = r1;

     r1.h = 0x0050;

     r1.l = 0x0126;

     p1.h = hi(REG_DMA31_CFG);

     p1.l = lo(REG_DMA31_CFG);

     [p1] = r1;

     r0 = [p0];

     r1 = [p1];

     bitset(r0,0);

     bitset(r1,0);

     [p1] = r1;

     [p0] = r0;

      wait0: jump wait0;