Hardfault and Assert failed

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Gerry Steyn

• October 10, 2015 09:40

For a couple of days now, I've been trying to get a program to run on the STM32F042F6. I used the Systick STDPERIPH example as a starting point. The systick is created and works properly, but as soon as I add GPIO's, I get a Hardfault error. I'm trying to add PB1 to flash a LED. 

At first I was working on my board with the STLINK, but then changed to the simulator. Both give the same results.

If I step the program, I can see the all the GPIOB registers contain 0xcdcdcdcd. If I try to change one of these registers in the Registers pane, I get the error "Simulator memory write word 0x48000400 failed"

I've been using Ver3.3, I've downloaded a demo version of Ver 3.5, I get the same results. I've even reinstalled the ST SPL Ver1.5.0.

I've searched all over for the problem, but no solution was found.

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  Michael Johnson

  • October 10, 2015 17:31

  If you are using the st library software then increase the stack size. If you aren't then ensure that the GPIOB is enabled (one of the RCC registers). I suspect the simulator doesn't implement those registers....

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  Gerry Steyn

  • October 10, 2015 18:23

  Thanks Michael!

  I went back to the hardware, and also increased the stack to 1024. Now it is working again.

   

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