HardDefault when using DSP arm filter

[Jinchen]

Hi, I try to use arm_fir_f32 from CMSIS-DSP to bandpass my signal. But the program always run into the hard fault handler.

I wonder if that could be i didn't correctly import the CMSIS-DSP library. I followed the instruction from https://community.st.com/t5/stm32-mcus/how-to-integrate-cmsis-dsp-libraries-on-a-stm32-project/ta-p/666790. But in the last step, there were so many multi definition, i commented so much more lines to make compliation work. But now the program kept run into hard fault, I wonder if this could be the problem from CMSIS-DSP.

[KDJEM.1]

Hello @Jinchen ,

Could you please give more detail about this hardfault? Is the optimization level set to 0?

May this FAQ "How to debug a HardFault on an Arm Cortex®-M STM32" can help you.  This article can help you to learn about fault registers, how to automate fault analysis, and figure out ways to recover from some faults.

Thank you.

Kaouthar

[Jinchen]

Hi Kaouthar,

Thank you for your reply, and I looked the tutorial you recommended.

The optimization level is set to be 0, and the Fault Analyzer and the address of the PC are shown in the image below. But I couldnt figure out how fix this hardfault.

Could you please give me some more advice?

Thank you 

Jinchen. 

[Jinchen]

All of the code was working fine, utill it run into the "arm_fir_f32(&S, tmpB1, tmpC1, FLOATS_PER_WINDOW_SIZE);"

[Tesla DeLorean]

If it's in the HardFault Handler and that just does while(1), there's no point in illustrating that.

Show the CODE that's actually failing and the REGISTERs

Imprecise suggests its a failing memory write just prior.

This is what I use in KEIL

https://github.com/cturvey/RandomNinjaChef/blob/main/KeilHardFault.c

I'm interested in the PC of the FAULT, the registers that code is using, and perhaps LR to understand the next level up, where the current function was called, so I can check the passed parameters, or perhaps add code to sanity check them. ie not NULL or Errant Pointers, etc.

Check size fields, if they describe bytes or array elements.