About SA V.1

SA V.1 · 2024-09-24

Hello community,The CMSIS DSP library supports a 4096-point FFT, but my project requires a 16384-point FFT. I added some extra library files (downloaded from GitHub; these files are written in C) to my project and successfullyperformed a 16384-point ...

SA V.1 · 2024-05-09

Hello community , Am using STM32H745ZIT6 MCU in that configured ADC (4 channnels) triggered by timer and data collected in DMA .ADC is tiggered by timer (all the 4 channels at a time ) . I want to trigger each channels seperately(in a single ADC) b...

SA V.1 · 2024-02-16

Hello community, In my project requires upto 16384 points of FFT(Fast Fourier Transform) . I found out that I can’t perform this number of FFT points using arm CMSIS DSP library since it is limited to 4096 point Max. Due to this I have to use externa...

SA V.1 · 2023-12-16

Hello community , Am using a STM32CubeIDE version 1.9.0 with CubeMX 6.5.0 created project in this and working fine no issues . Currently installed a recent version CubeIDE1.14.0 with CubeMX 6.10.0 and i opened my old projects in this projects will o...

SA V.1 · 2023-09-29

Hello team, am working ADC and Ethernet in Nucleo H745zi_q board when goes to initialize DMA for ADC from that moment Ethernet failed to ping "destination host unreachable " . HAL_ADC_Init --> HAL_ADC_MspInit --> /* ADC3 DMA Init */ if i comment...

SA V.1 · 2024-10-03

> complex FFT , data format float>H7 will supports FPU.> extra DSP library - fallowed by this --> https://github.com/Treeed/Long_FFTs_for_CMSIS_DSP/tree/master some part of code :Process_FFT(ADC_TEMP_Ch1); // FFT processingvoid Process_FFT(signed s...

SA V.1 · 2024-10-03

In the CMSIS DSP library, a 4K FFT takes 1.6 seconds to execute. When I enable the I+D cache, it takes 440 ms. However, when I add extra DSP library files to perform a 16,384-point FFT, it takes 27 seconds to execute. With the I+D cache enabled, it t...

SA V.1 · 2024-09-24

working on H7 only (STM32H745xx) ,real data ---> The functions support lengths of [32, 64, 128, ..., 4096]samples. Done with 4K and got the output properly Next Added some library files to perform 16384 and got the result also but consumes more tim...

SA V.1 · 2024-09-24

H7's floating point unit support double ?Yes --->The Arm® Cortex®-M7 with double-precision FPU processor is the latest generation of Arm processors for embedded systems.I add these library files and peforming the FFT and got the result also but the ...

SA V.1 · 2024-09-24

16k FFT , is about N*log(N) butterfly ops -> about 230k ; assuming the cpu can do 4Mio /s , your FFT should run in about 100ms or so, not 30 s. ---> i didn't understand this calculation ? FFT input is float, am using ARM(STM32H745xx muc CortexM7),C...

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Time Delay in FFT performance

ADC Triggered by Timer

16384 points of FFT(Fast Fourier Transform)

Software version issues

when ADC DMA initialization starts ETH failed to ping

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