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STM32 Fast Fourier Transform (CMSIS DSP FFT) - Phil's Lab #111

Phil’s Lab

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Intermediate. Assumes working knowledge.

75K views3 years ago2 recommendations

Systems programmingHardwareEmbedded systemsAlgorithms

How to implement a Fast Fourier Transform on an STM32 microcontroller using ARM's CMSIS DSP library.

How to implement a Fast Fourier Transform (FFT) on an embedded system (STM32 microcontroller + CODEC) using ARM's CMSIS library. Full walkthrough and demo of a peak frequency detector. PCBs by PCBWay pcbway.com (AD: This video includes a paid promotion for PCBWay and Altium). [SUPPORT] Hardware design courses: phils-lab-shop.fedevel.education Course content: phils-lab.net/courses Free trial of Altium Designer: altium.com/yt/philslab (AD) Patreon: patreon.com/phils94 [GIT] github.com/pms67 [SOCIAL] Instagram: instagram.com/philslabyt [LINKS] CMSIS Libraries: github.com/ARM-software/CMSIS_4 STM32CubeIDE: st.com/en/development-tools/stm32cubeide.html 3blue1brown FFT Video: youtube.com/watch?v=spUNpyF58BY Hardware Walkthrough Video: youtube.com/watch?v=AxEL3eESL9I I2S/DMA Set-Up Video: youtube.com/watch?v=zlGSxZGwj-E [TIMESTAMPS] Introduction Altium Designer Free Trial (Ad) PCBWay (Ad) Previous Videos FFT Basics CMSIS Libraries Adding Libraries to CubeIDE Basic Code Structure Including arm_math.h ARM FFT Function Overview FFT Variables & Defines Initialising FFT Processing Callback (Fill Buffer, Compute FFT) Peak Frequency Detector FFT Complex Result Computing Magnitude Frequency Bins Data via USB Test Set-Up Live Demo Outro

Why it's here

2 people recommend this

What people say. Recommended as a practical guide for implementing FFT and DSP on ARM microcontrollers.

u/Top_Independence5434in r/embedded • Recommends

On “Is knowing DFT useful for an embedded engineer?”

ARM's CMSIS library can perform DFT in every mcu that has an ARM core and preferrably FPU. Here is an example. Understanding the theory to knows what it spits out is good, but not how to write code to perform it.
1View on Reddit

u/Dwagner6in r/embedded • Recommends

On “[Beginner] Help me chose an STM32 board”

STM32F4 family is pretty old, but if that’s all you have available, go with more SRAM F411 if you’re “displaying” stuff like on a actually display (OLED, TFT, or whatever). You can use the CMSIS DSP library to do the FFT: Integrating CMSIS DSP libraries into your project Phils Lab: STM32 FFT
1View on Reddit