DSP28335滑动平均代码

以下是一段使用DSP28335实现滑动平均的代码：

#include "DSP2833x_Device.h"

#define FILTER_LENGTH 16

Uint16 counter = 0;
Uint16 index = 0;
Uint16 result = 0;
Uint16 filter[FILTER_LENGTH] = {0};

interrupt void adc_isr(void)
{
    filter[index] = AdcResult.ADCRESULT0;

    if(counter < FILTER_LENGTH)
    {
        counter++;
    }

    result = 0;
    for(Uint16 i = 0; i < counter; i++)
    {
        result += filter[i];
    }
    result /= counter;

    index++;
    if(index >= FILTER_LENGTH)
    {
        index = 0;
    }

    AdcRegs.ADCTRL2.bit.RST_SEQ1 = 1; 

    PieCtrlRegs.PIEACK.all |= M_INT1;
}

void main(void)
{
    InitSysCtrl();
    InitPieCtrl();
    InitPieVectTable();
    EALLOW;
    PieVectTable.ADCINT1 = &adc_isr;
    EDIS;
    IER |= M_INT1;
    PieCtrlRegs.PIEIER1.bit.INTx1 = 1;
    AdcRegs.ADCTRL2.bit.EPWM_SOCA_SEQ1 = 1;
    AdcRegs.ADCTRL2.bit.INT_ENA_SEQ1 = 1;
    AdcRegs.ADCTRL2.bit.RST_SEQ1 = 1; 
    AdcRegs.ADCTRL2.bit.SOC_SEQ1 = 1;

    while(1);
}

该代码使用DMA控制AD转换，每次转换的结果会存储在filter数组中，然后计算数组中所有元素的平均值。当filter数组填满后，将从头开始重新填充。