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calculate the CRC of Flash memory from Out file(COFF file)

nancy dong
Prodigy 10 points


Hello all,
 
Currently we are trying to calculate the CRC of Flash memory from Out file(COFF file), then download this Coff file with CRC to target board, then comapre it with the calculated one to check whether ROM check has error.
 
Thank you!
Best Regards,
Nancy Dong
  • 0
    Guru 192875 points

    Hi Nancy,

    I hope this thread helps you out:

    http://e2e.ti.com/support/microcontrollers/c2000/f/171/t/117036.aspx

    Regards,

    Gautam

  • 0
    Guru 20525 points

    Hi!

    For example, you can go to HEX-format to resolve this task with HEX-editor http://mh-nexus.de/en/. This application calculates checksum with many  algorithms (option "Analise"). After calculation you can insert checksum to end of your file through option "add bytes".

    Regards,

    Igor

  • 0
    Expert 1345 points

    7585.slaa221.zip

    The above link includes algorithms for calculating CRCs.

    I used a shareware application called HexEdit available at www.hexedit.com.

    The 32-bit CRC value calculated by HexEdit uses the same polynomial as the TI method shown in slaa221.

    The trick I discovered was realizing that HexEdit calculates a 32-bit CRC based on a reflected method. See the CRC-32 values in the far right column on page 6 (section 4.6) of SLAA221.

    Also, the flash sectors on some C2000 dsps are 16 bit words. HexEdit will load your out file in 8-bit memory locations, so you need to keep that in mind when selecting a CRC algorithm. SLAA221 has 16-bit and 8-bit algorithms.

    -Chuck