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CC2642R: Trying to flash TI chip using Backdoor Bootloader mode, CCFG CRC not Matching

ARUL E
Prodigy 40 points
Part Number: CC2642R

Tool/software:

Hello Team,

         I'm using Backdoor Bootloader mode to flash TI, we are using Sector erase method to erase, we skipped Block 36(page 36) and block 37 (page37) remaining all we erased, then we flashed from base address to some address then we try to verify the same with CRC, It is matching, now I'm trying to flash CCFG which is of 88 bytes I can able to flash but CRC is not matching, what may be the issue ?

  • 0
    TI__Genius 12321 points

    Hello ARUL E,

    I hope you are doing well. I first wanted to reach out and ask which SDK version is this on, and which CCS version as well. Was the CRC re-calculated with the CCFG perhaps?

    Thanks,
    Alex F

  • 0 in reply to Alex Fager
    Prodigy 40 points

    Hi Alex,

    thanks for your response, we are not using SDK and CCS to flash. in our case IMXRT Controller is Master and TI CHIP is slave, From IMXRT I'm trying to flash TI_CHIP using backdoor bootloader mode via SPI.

  • 0 in reply to ARUL E
    Prodigy 40 points

    adding some other findings: after erase I checked for CRC (before write) let's say A, after flash I'm trying to check CRC (after write) let's say B, What i observed is A and B are same. what does it mean is ERASE For CCFG is not working or write for CCFG is not working ?

  • 0 in reply to ARUL E
    TI__Genius 12321 points

    Hello ARUL E,

    I wanted to see if you are sending the right address for the COMMAND_CRC32, if the CCFG section is not included in that address then CRC calculation won't include it, this could explain why the CRC's are the same in both instances. 

    Thanks,
    Alex F