TMS320F28035: HEX2000 Block Size Configuration

Brian Wang0

Hi team,

I am supporting my customer to use HEX2000 to generate a hex.txt to support our bootloader.

I looked throught our hex format and the source code fo Boot ROM, I noticed there is an important parameter which is 'block size'. In our boot function, we recieve all the data in one 'block' in a ram buffer and then program in flash. Thus the block size is directly related to the buffer size in RAM.If I can limit the block size, I can use a smaller buffer.

My question is:

1. How is the block size determined by default? Is it a fixed value? I am using this command to generate hex file:

....\hex2000.exe -boot -sci8 -a -o Example_2803xEPwmDCEventTripComp.txt Example_2803xEPwmDCEventTripComp.out

2. Do we support to specify the block size in HEX2000? How to do that?

Regards,

Brian

over 6 years ago

0 Krishna Allam over 6 years ago

TI__Expert 7985 points

Hi Brian,

Please have a look at this document: Learn more about it here as part of this user's guide: http://www.ti.com/lit/spru513 Section 12.3.2 talks about Specifying the Memory Width.

Let me know if you need further assistance.

Cheers!

Krishna Allam

0 Brian Wang0 over 6 years ago in reply to Krishna Allam

TI__Expert 5500 points

Hi Krishna,

According to my understanding, the memory width indicates the data bit width like 8bit or 16bit, but not how many bytes are included in one block as I mentioned in the post. Is that correct?

Regards,

Brian

0 Krishna Allam over 6 years ago in reply to Brian Wang0

TI__Expert 7985 points

Hi Brian,

You are right, the memory width indicates byte (8-bit) or word (16-bit). It does not define the block size and that is expected can be defined by the user. The only thing to keep in mind is that the block should should begin at a word aligned boundary.

Hope this is helpful. Please let us know if you have further questions.

Thanks,

Krishna

0 Krishna Allam over 6 years ago in reply to Krishna Allam

TI__Expert 7985 points

Hi Brian, I am going to close this issue with the understanding that you do not have any further questions. Please feel free to re-open this issue or submit another one if we can be of further assistance.

Cheers!

Krishna

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F28035: HEX2000 Block Size Configuration