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delete exocite CIK from eeprom TM4C129ENCPDT

Jan Cumps
Guru 15740 points

Other Parts Discussed in Thread: TM4C129ENCPDT, UNIFLASH

What's the best way to remove the CIK from a TM4C129ENCPDT crypto connected controller

(the key that's retrieved when running the iot examples)

Is there a UniFlash setting that supports that, or should I write a program that clears the memory area?

  • 0
    Guru 92251 points

    Jan Cumps said:
    Is there a UniFlash setting that supports that, or should I write a program that clears the memory area?

    The "Debug Port Unlock" utility in LM Flash Programmer invokes a mass erase of the device, which erases the EEPROM, flash and non-volatile registers.

    Note that since the MAC address is stored in the non-volatile User registers performing a "Debug Port Unlock" will erase the MAC address. LM Flash Programmer allows you to read the current MAC address, perform a Debug Port Unlock, and then restore the original MAC address.

    Having just checked Uniflash 3.4.0 there are the same facilities as LM Flash Programmer for reading the MAC address, performing a Debug Port Unlock and writing the MAC address.

  • 0
    TI__Guru**** 244450 points
    Hello Jan,

    If you generate a new CIK, then launchpad will register the new CIK and discard the older one.

    Regards
    Amit
  • 0 in reply to Amit Ashara
    Guru 15740 points
    Confirmed. Thank you.