STM32H742VG HardFault()

Dear comrades!

I have encountered a problem while debuging my STM32H742VG project.

I am falling into HardFault just after system init and do not know any reason why it is happening.

I am starting my MCU with HSI clock and debugign with a STLink v2 debugger.

Could anyone help me with solving the problem please?

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Guru

Use a Handler that outputs actionable data, and with an understanding of the registers/state inspect the offending code in a disassembly.

Super early check stack alignment and RAM used.

Turn off "run to main" and walk in the code.

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Associate II

Thank you - I will try this.

But first I would like to ask you if there is an easier way 'cause I have never tried to solve problems via disassembly.

Maybe a blank-default way to start th MCU? I just think that there is something very simple I am forgeting to turn on at the start...

Guru

You could walk your code and look for errant pointer. Check malloc/new don't fail, returning NUL pointers.

Check alignment issues.

Check the FPU is enabled.

Check it is linking the right libraries.

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