how to use fft library in zephyr ncs for adx1345

[irsad_kures]

I have got accel data from adaxl345 in nrf9160. I want to get vibration frequency (HZ)  from accel data set using fft algorithm. 

process: 

1. collect 100 accel data every one second

2. 100 data put a buffer. create a data set every one second

3. using fft algorithm on zephyr in nrf9160  (sdk 2.6 / toolchanin 2.6)

4. geting  vibration frequency (HZ) every one second

are there any sample or guide book for using fft algorithm on dataset ? can you answer in detail.

[Naeem Maroof]

Hi,

The zephyr DSP library provides the functionality that you are looking for.

Please see this ticket that talks about FFT on 9160 device using NCS.

You might also like to look at CMSIS on github that might contain some example code.

Regards,

Naeem