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Calculating application code checksum

Nimish Tambe
Prodigy 70 points


Hi!

I'm looking for ways to calculate my application code's checksum at runtime. Essentially, I want to write a routine that iterates over the application code space in FLASH and generates a simple checksum.

For this purpose, I would need to know the start address of my application code (which I will have), but the number of code words or the final address of my application code will be unknown (I assume), as I will continue to make minor revisions to the firmware over time.

Is there a symbol that is generated at compile time that contains the final address of the application code in FLASH memory? Or am I missing something?

Thanks in advance.

  • 0
    TI__Mastermind 19810 points

    Hi Nimish

    you can declare a symbol in your linker command file at the end of your text section and refer to this in your C-code. The address of this symbol when accessed will give you the end address of the text segment.

    Should be mentioned in assembler or compiler reference guides.

    Best Regards
    Santosh