TMS320F28335: Memory Check

Alvaro,

This post gives the details on the checksum algo we used to create the checksum stored in the BROM:

 BOOT ROM checksum code 

Page 217 of the TRM gives the details on where this is stored in the BROM: https://www.ti.com/lit/ug/sprui07/sprui07.pdf

If you want to do a checksum of your RAM contents, you can use the similar approach to our BROM checksum algo on your fixed data sections.

Best,

Matthew

Thanks Matthew, I check this and say something.

Hello I can search the code and the TRM, but I need to check this specific memory:

- Program memory

- Adjustable data

- HW Config Area

- HW Correction Data

I have the memory map of my project but I don´t know as recognize these areas.

Álvaro

Álvaro,

Here is link to the general memory map https://www.ti.com/document-viewer/TMS320F28335/datasheet#GUID-7D9C26C1-9D15-4E3A-B2FF-A843EB612894/TITLE-SPRS439LITSPRS230-0445

and the HW register maps are here:

https://www.ti.com/document-viewer/TMS320F28335/datasheet#GUID-7D9C26C1-9D15-4E3A-B2FF-A843EB612894/TITLE-SPRS439LITSPRS230-0445

The F28335 has a unified memory map, so everything in program space is also accessible in data space by the C28x core.

For memory, you can look at your .map file(output from the project build) to see what ranges are in use.

For the HW regs, you will need to look at what IP you are using, but not all registers will have a read back value, ex: GPIOSET registers are R=0 always, etc.  You will need to see which registers make sense based on your system.

You can use pointers for the memory and peripheral regions, as I mentioned everything is accessible via data space reads, so no special requirements on the C code side.

Let me know if this is the info you are looking for, or if you have more questions.

Best,

Matthew