TMS320F28069F: How can I extract the size of the .text section in my code to run a flash CRC check?

Hi Valeri,

Irrespective of the map file, why don't you do checksum for the entire flash memory address range?  Do you plan to change some of the flash content at run time for data storage?

Thanks and regards,
Vamsi

Hi Vamsi,

When I generate my hex file I've noticed the executable flash memory section does not cover the entire flash memory address range. Instead, the flash sector in the hex file only occupies the used flash memory.

I cannot compute a checksum over the entire flash memory range like that, as the unused flash memory is removed out of the hex file. And to answer your 2nd question, no. Flash content is not changing at run time.

Thanks,

Valeri.

I have already attempted this, but it doesn't suit my needs. The --fill option does not fill the executable program memory (.text), which is what I need to perform a checksum check. 

To give some context, I'm using an externally developed hex tool to compute a CRC over the executable flash memory. The tool can extract the executable flash memory address and its corresponding length from a ti_txt file. Once the CRC is computed, the hex tool will write the CRC into the hex file under a specific memory location. At run-time, I want to perform a continuous CRC check, but that is impossible if I don't have a way to extract the executable flash memory size.

Is there no possible way to extract the executable flash memory size? On the .map file I see it under the .text section. Can I not extract this number directly at runtime?

Thanks,

Valeri.

Hi Valeri,

Thank you for the details. I can review and get back to you early next week.

Regards,
Vamsi

Hi Valeri,

Since I did not hear back from you, I am closing this post assuming the issue is resolved.

If you have further questions, please open a new post.

Thanks and regards,
Vamsi