MSPM0L1306: CRC calculation in combination with linker generated and store crc checksum in hex file, read CRC resul in C code

Bian johnny

Part Number: MSPM0L1306

Tool/software:

Hi Support team:

I want to implement CRC calculation and store result in HEX file with updated .cmd file. Then read out CRC result in C code.

I change content in .cmd file, see red in first picture. The CRC content _flash_crc is in .map file, see red in second picture.

But _flash_crc does not have content in debug state, see third picture.

I reference chapter 10.9 of complier user manual. Is there other references? thanks

johnny

1 month ago

0 Dennis Lehman 30 days ago

TI__Guru 71216 points

Hi Bian,

I super apologize that you have not received a response to your questions.

Let me take a quick look into this for you and get right back with an answer.

0 Dennis Lehman 30 days ago in reply to Dennis Lehman

TI__Guru 71216 points

Hi Bian,

Ok, again, sorry for the delay.

Looking back through your code I see the CRC_TABLE, which should come crc_tbl.h, so not exactly sure why the CCS can't display _flash_crc as a struct as I did in my example I put together (see below). You can see the _flash_crc_table in the expressions window. IDE.

Just a note -> In the linker cmd file you shouldn't use type=copy as this prevents the CRC from being placed in memory

Do this instead

Check out the attached pdf, slide 4 for a complete view of my CCS if that helps. Let me know ... I can post my code also.

Linker Generated CRC example.pdf

0 Bian johnny 23 days ago in reply to Dennis Lehman

Prodigy 30 points

Hi Dennis,

Thanks for your so detail explain. I comment 'type = COPY' in .cmd, so the result of MEMRANGE_CRC_TABLE in expressions window. IDE now.

But the value is wrong.

BTW, I use CCS 12.4, CLANG 4.0.1

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MSPM0L1306: CRC calculation in combination with linker generated and store crc checksum in hex file, read CRC resul in C code