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stm32f405, hardfault help

Question asked by Angelo Dureghello on Mar 18, 2014
Latest reply on Mar 18, 2014 by Andrew Neil
Dear all,

i am still in a beginner phase with stm32, and trying to output a square wave from a GPIO PORTA pin.

But program loops in hardfault:

> step
target state: halted
target halted due to single-step, current mode: Thread
xPSR: 0x41000000 pc: 0x0800224c msp: 0x20020000
halted: PC: 0x0800224c
> step
target state: halted
target halted due to single-step, current mode: Handler HardFault
xPSR: 0x41000003 pc: 0x08000900 msp: 0x2001ffe0
halted: PC: 0x08000900
> step
target state: halted
target halted due to single-step, current mode: Handler HardFault
xPSR: 0x41000003 pc: 0x08000902 msp: 0x2001ffe0
halted: PC: 0x08000902
> step
target state: halted
target halted due to single-step, current mode: Thread
xPSR: 0x41000000 pc: 0x0800224c msp: 0x20020000
halted: PC: 0x0800224c
>

What could cause this ?

Thanks
angelo




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