There are some memory Considerations that have to be kept in mind while using the E-Meterology Library.
First let's look at the total available RAM and Flash in F28P55.
Total Available RAM

Total Available Flash

Overall memory distribution of the E-Meterology Library

Current Memory Utilization (CPU1_RAM build)

Current Memory Allocation (in CPU1_Flash Build)

The major contributor to the memory are the FFT arrays. You can find the size for the buffers used to do FFT calculations here.

This is realtionship between FFT_STAGES (defined in fft.h) and the size of the buffers


![]()
