stm32 HAL库 三重ADC交替采样-极限采样率7.2M

for (l = 1; l <= N/4; l++)
  {
    for (i = 0; i< logN2; i++)
    {
      a[i] = l & (1 << i);
    }
    for (j = 0; j < logN2; j++)
    {
      if (a[j] != 0)
      y[l] += (1 << ((logN2 - 1) - j));
    }
    y[l] = y[l] >> 1;
   }