PIC24FJ带DMA的ADC有时值不相等

您好，就像提到的主题名称一样，当DMA将ADC转换成RAM时，ADC的结果缓冲区（ADC1BUF2）与RAM内的值不相等。这是我对DMA的初始化：DMA触发器是ADC中断，当转换完成时，我添加了一些图片来显示问题。尼昂已经面临这种行为？



      以下为原文

    Hello,

Like as the topic name mentioned, the result buffer (ADC1BUF2) of ADC are not equal with the values inside the ram, when DMA moves the ADC conversion into ram.

This is my initialisation of DMA:
DMA Trigger is ADC Interrupt, when conversion is done.
I added some pictures to show the problem.

void DMA_Enable(void)
{
    /* DMACON */
    /*****************************************/
    /* Enable DMA Modul */
    DMACONbits.DMAEN = 1;
   
    /* Channel Priority Scheme is Fixed */
    DMACONbits.PRSSEL = 0;
}

void DMA_ADC_Init(uint16_t* destination)
{
     /* Disable DMACH0 */
    DMACH0bits.CHEN = 0;

    /* DMACH0 */
    /*****************************************/
    /* No dummy write */
    DMACH0bits.NULLW = 0;
   
    /* Address and Count Reloaded for next operation */
    DMACH0bits.RELOAD = 1;
   
    /* No software request */
    DMACH0bits.CHREQ = 0;
   
    /* DMA Source is Peripheral Indirect Addressing and remains unchanged */
    DMACH0bits.SAMODE = 3;
   
    /* DMA Destination remains unchanged after a transfer completion */
    DMACH0bits.DAMODE = 0;
   
    /* Transfermode is repeated one shot mode */
    DMACH0bits.TRMODE = 1;
   
    /* Data size is 16-bit */
    DMACH0bits.SIZE = 0;
        
    /* DMA Source, Destination and Count */
    DMASRC0 = &ADC1BUF2; // ADC1BUF2
    DMADST0 = destination;
    DMACNT0 = 1;
   
    /* Enable DMACH0 */
    DMACH0bits.CHEN = 1;
   
   
    /* DMAINT0 */
    /*************************************************/
    /* Channel Trigger is A/D Interrupt */
    DMAINT0bits.CHSEL = 0b1010001;
}

Did anyone already faced with this behavior?
   Attached Image(s)