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Recovering default MAC address for DK-TM4C129X kit

badvani
Prodigy 130 points
Other Parts Discussed in Thread: LMFLASHPROGRAMMER, UNIFLASH

Hi,

(this is a low priority issue - more of a curiosity)

I recently did a Debug Port Unlock for my DK-TM4C129X that had gotten locked. In doing so, the registers where the MAC address was stored were erased. Is there any way I can recover the default MAC address? I have searched the kit and the box it came in, and I can't find anything that indicates a MAC address.

Thanks.

  • 0
    TI__Guru**** 244380 points

    Hello Badvani,

    You should have noted this before using the kit. But anyways you can try putting a new MAC Address using LMFlashProgrammer and downloading the ethernet example

    Regards

    Amit

  • 0 in reply to Amit Ashara
    Prodigy 135 points

    Amit,

    LMFlashProgrammer works great for the dev kit but does not work well for a custom board.

    How do I program the MAC Address on a custom board?

    Regards,

    Alonso

  • 0 in reply to Alonso Rodriguez
    TI__Guru**** 244380 points

    Hello Alonso,

    The LMFlashProgrammer uses the Stellaris ICDI for JTAG on the Dev Kit. In case you want to do the same using a custom board, you may want to use the UNIFLASH application if you have an XDS Debugger/Emulator

    In the UNIFLASH you may want to use the Option of User Register Programming to program the MAC Address which the enet examples can then use.

    Regards

    Amit

  • 0 in reply to Amit Ashara
    Prodigy 135 points

    Amit,

    Great advise, I tried the UNIFLASH and it worked.  The problem is that I committed the MAC address.  Is there a way to reprogram the MAC address.  When using UNIFLASH it appears to work but when I read back it continues to read back the old address.

    Regards,
    Alonso

  • 0 in reply to Alonso Rodriguez
    TI__Guru**** 244380 points

    Hello Alonso,

    You will have to Toggle Mass Erase (Unlock Sequence)  the device to commit a new value.

    Regards

    Amit