Use of FFT with RAK4631 RUI

RUI
#1

Hello,

I am reading RAK1904 sensor acceleration data at high rate and want to do FFT operation on the obtained data. What FFT library do you recommend me to use RAK4631 RUI ?

Thank you !

#2

Hi @wardzx ,

In our WisBlock Audio, we have different example implementations of FFT.

Most of these are using ApproxFFT. This is not a library but a lightweight implementation of FFT in C code.

Maybe you can have a look and see if it can be used to your acceleration data stream.

Here’s one FFT example - https://github.com/RAKWireless/RAKwireless-Audio-library/tree/main/examples/RAK4631/PDMSerialPlotterFFT

Please note that the full example itself is not for RUI3. However, ApproxFFT is a C code that you can try to port and implement for accelerometer.

#3

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