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TMS320F28P550SJ: CRC Calculation in command line

Hang Yang
Expert 3031 points
Part Number: TMS320F28P550SJ
Other Parts Discussed in Thread: UNIFLASH

Tool/software:

Hi Experts,

My customer is developing automation script for the UNIFLASH command line interface. They need to calculate the CRC or other forms of verification code. I can see this in the GUI, but how to calculate CRC in command line?

Regards,

Hang

  • 0
    TI__Expert 3031 points

    Adding more details.

    Customer needs to confirm the CRC of the image before loading, how can this be done in the command line interface?

  • 0
    TI__Genius 15010 points

    Hi Hang,

    The customer can calculate CRC Checksum through the UniFlash Command Line Interface (CLI) before loading by doing one of the following changes:

    1. In dslite-C28xx_CPU1.bat, add the "-b CalculateChecksum" argument to the generated command file, for example:

    set GENERATED_COMMAND=-c user_files/configs/f28p550sj9.ccxml -l user_files/settings/generated.ufsettings -s VerifyAfterProgramLoad="No verification" -e -f -v "user_files/images/led_ex1_blinky.out" -b CalculateChecksum
    2. At the command line when calling dslite-C28xx_CPU1.bat, add the arguments for generated command including the "-b CalculateChecksum" option, for example:
    dslite-C28xx_CPU1.bat flash -c user_files/configs/f28p550sj9.ccxml -l user_files/settings/generated.ufsettings -s VerifyAfterProgramLoad="No verification" -e -f -v "user_files/images/led_ex1_blinky.out" -b CalculateChecksum
    Note that the "-b" argument indicates we wish to perform this operation before a program load. Operations can be found in the device's Flash Properties XML file as one of the performAction items.
    Thanks and regards,
    Charles
  • 0 in reply to Charles Roberson
    TI__Expert 3031 points

    Hi Charles,

    Thanks for the instructions. As I tried it out, the -b option seems belongs to part of the loading process, the customer is looking for a separate CRC calculation.

    Their process goes like:

    1. Calculate check sum 

    2. Confirm the checksum from display to ensure they are using correct image.

    3. Connect to XDS110

    4. Program the device

    Using -b options would have these issue: 

    • It cannot be used when XDS110 is not connected
    • Even if XDS110 is connected, using -b would cause a program load right after calculating the checksum.

    The -b options is like executing step 1 and step 4 in a sequence, they need to insert at least step 2 in between (ideally inserting step3 as well), 

    They need something to execute step 1 only. Does CLI support that? If not, can we share the algorithm so that they can implement it themself?

    Regards,

    Hang

  • 0 in reply to Hang Yang
    TI__Genius 15010 points

    Hi Hang,

    The options for checksum before XDS110 usage, do you mean checksum over the image standalone? This is not something that the CLI interface currently supports. Per Vamsi, has the algorithm already been shared to you?

    Thanks and regards,

    Charles

  • 0 in reply to Charles Roberson
    TI__Expert 3031 points

    Hi Charles,

    Vansi shared a checksum algorithm, is it the same to the CRC we are talking about here?

  • 0
    TI__Guru**** 472161 points
    Hang Yang said:
    I can see this in the GUI

    There are several types of checksum. Can you provide a screenshot of this particular one that you are interested in?

  • 0 in reply to Ki
    TI__Expert 3031 points

    Hi Ki 

    This one

  • 0 in reply to Hang Yang
    TI__Guru**** 472161 points

    Thank you. I don't believe this functionality is available from UniFlash CLI interface. I will need to confirm.