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How to monitor what got me to an exception handlers?

avihay eini

How can i monitor where an HardFault_Handler (for example) exception occured?
which function, paramter or line rised this exception..
i think i would need to add a fuction to Handler functions so it will save the stack path to flash memory so i could watch it from the map file.

does it has to be an inline assembly function?

i would welcome any suggestion :)

thanks!

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  • 0 in reply to Andy Neil

    Hi Andrew, thanks for the quick response.
    i try to implement the functions from this source:
    www.freertos.org/Debugging-Hard-Faults-On-Cortex-M-Microcontrollers.html

    i guess im not using the inline assembly right.. why is the content of "static void HardFault_Handler(void)" is all commented with " ?
    it says it doesnt recognized the "lr" pramater, which is the first one.. so it wont recognized any of the syntax..

    iv'e replaced the "void HardFault_Handler(void)" function with this one, and the "prvGetRegistersFromStack" is also there..(in stm32f4xx_it.c)

    what am i missing?

    (im very new to this, so sorry for the trouble and thanks!)

Reply
  • 0 in reply to Andy Neil

    Hi Andrew, thanks for the quick response.
    i try to implement the functions from this source:
    www.freertos.org/Debugging-Hard-Faults-On-Cortex-M-Microcontrollers.html

    i guess im not using the inline assembly right.. why is the content of "static void HardFault_Handler(void)" is all commented with " ?
    it says it doesnt recognized the "lr" pramater, which is the first one.. so it wont recognized any of the syntax..

    iv'e replaced the "void HardFault_Handler(void)" function with this one, and the "prvGetRegistersFromStack" is also there..(in stm32f4xx_it.c)

    what am i missing?

    (im very new to this, so sorry for the trouble and thanks!)

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