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

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 [SUPPORT] Hardware design courses: Course content: Free trial of Altium Designer: Tag-Connect: Patreon: [GIT] [SOCIAL] Instagram: [LINKS] CMSIS Libraries: STM32CubeIDE: 3blue1brown FFT Video: Hardware Walkthrough Video: I2S/DMA Set-Up Video: [TIMESTAMPS] 00:00 Introduction 01:13 Altium Designer Free Trial 01:36 PCBWay 01:56 Previous Videos 02:27 FFT Basics 03:04 CMSIS Libraries 04:24 Adding Libraries to CubeIDE 06:06 Basic Code Structure 07:12 Including arm_math.h 07:43 ARM FFT Function Overview 09:04 FFT Variables & Defines 09:56 Initialising FFT 10:14 Processing Callback (Fill Buffer, Compute FFT) 12:32 Peak Frequency Detector 13:26 FFT Complex Result 14:27 Computing Magnitude 15:10 Frequency Bins 17:15 Data via USB 17:38 Test Set-Up 18:10 Live Demo 19:43 Outro