求高手指点该程序，是什么功能，意思。新手。谢谢。

2019-07-16 08:43发布

short Max11046DataAvr(int16 data[],uint8 length,uint16 zero_channel)
{
      uint8 i,j,len;
      short temp_val,min_index;
      int32 sum_val;
      int16 AD_val;
      int16 data_tmp[SAMP_COUNT_ALL];                               //120
      len = length;
      for (i=0; i<len; i++)
      {
            data_tmp = data;
      }
      for (i=0; i<len-1; i++)
      {
            min_index = i;
            for (j=i+1; j<len; j++)
            {
                     if (data_tmp[j]<data_tmp[min_index])
                     {
                              min_index = j;
                     }
            }
            if(min_index != i)
            {
                     temp_val = data_tmp;
                     data_tmp = data_tmp[min_index];
                     data_tmp[min_index] = temp_val;
            }
      }
      sum_val = 0;
      for (i=(len-COUNTSAMPINDEX)/2; i<(len+COUNTSAMPINDEX)/2; i++)
      {
            if (data_tmp>=zero_channel)
            {
                     data_tmp = data_tmp - zero_channel;
                     sum_val += data_tmp;
            }
            else
            {
                     data_tmp = zero_channel - data_tmp;
                     sum_val -= data_tmp;
            }
      }
      AD_val = sum_val / COUNTSAMPINDEX;
      return AD_val;
}