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HardFault when doing FFT

Vegard Havellen

Hi

I am making a program that samples a signal, does a fft on the signal and sends the signal over can. I am using a STM32F446ZE with Keil for the programming.

I have a problem that the program crashes to the hardfault handler when the fft is doing a bitreversal. I am not so steady on Keil that i can pinpoint the assemblyline that causes the crash.

I am using the CMSIS DSP package to do the fft, although the problen was also present when using KISSFFT.

Does anyone here have any tips or solutions to my problem?

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