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vincenthamp9
vincenthamp9
Associate III
December 7, 2014
Question

STM32F405 - core won't run

  • December 7, 2014
  • 2 replies
  • 527 views
Posted on December 07, 2014 at 13:38

Hello

I've recently developed my first little STM32F4 board which I just successfully connected to. The chip can be programmed, erased, red from and what not but no matter what I do, my own code won't run. So far I've used ST Utility to program the chip and afterwards I've tried to do a core and system reset from the menu.

Both resets result in a ''Lockup'' of the Core state?

Is this normal?

I've no idea what to try next...?

A high-res circuit diagram can be found here:

http://higaski.at/stm32.png

tia
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    2 replies

    Tesla DeLorean
    Tesla DeLorean
    Guru
    December 7, 2014
    Posted on December 07, 2014 at 16:07

    I've no idea what to try next...?

    Do something simpler, and try using a debugger to understand what's happening.

    Put some code in the ResetHandler to toggle a GPIO.

    Check the system_stm32f4xx.c code, make sure the PLL settings are suitable for your board, the HSE is at the correct value, along with HSE_VALUE defined in the project.
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    vincenthamp9
    vincenthamp9Author
    Associate III
    December 7, 2014
    Posted on December 07, 2014 at 17:18

    Well... apparently Eclipse does not recognize small .s files as ASM.

    I had no startup code at all.
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