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Flash Memory Write Error F28069

Adnan Kurt
Intellectual 665 points
Other Parts Discussed in Thread: UNIFLASH

I am using CCSv4 & CCSv5.4 to write and download programs to controlStick F28069. All of a sudden, I could not download, erase or reprogram my controller. I have then tested and tried using Uniflash programming utility. No success. I have tried reprogramming the FTDI chip with tools addressed in XDS100 page. It seems to be working as expected. I have tried programming another controlStick to make sure that the PC USB is intact. There is no prblem with PC, Software integrity and USB port. I assume FTDI is also clean.

I have tried to see whether any locking and passwords problem. No, I can unlock without error, no unexpected password list. I can read from the memory, but cannot write and cannot program.

I have read many similar discussions, but could not figure out a solution. Before buying a new stick I wanted to get expert opinion. Especially, I am uneasy to get a new device, without knowing the reason of damage or way to cure, if any.

Regards,
Adnan Kurt

PS. This is a typical error message I am getting under Uniflash:

C28xx: Flash Programmer: Error erasing flash memory. << When trying to erase asector

And these are what I get when trying to download a program:

[05:34:01] Loading program: \\PISI\Users\Adnan\ShareVirtual\BlinkingLED.out
[05:34:04] ERROR >> C28xx: Flash Programmer: Error encountered when writing to flash memory
[05:34:05] ERROR >> C28xx: GEL: File: \\PISI\Users\Adnan\ShareVirtual\BlinkingLED.out: Load failed.
[05:34:05] File: \\PISI\Users\Adnan\ShareVirtual\BlinkingLED.out: Load failed.
[05:34:05] Programs operation finished.

  • 0
    Guru 192875 points

    Hi Adnan,

    It sounds as if the device is locked by the security module. If that is the case there is no way to get it back to its default state. I would like to know, did you ever stop the ongoing programming process when it was successfully programming? Try using the "unlock" feature in Uniflash and then try programming.

    Regards,

    Gautam

  • 0 in reply to Gautam Iyer
    Intellectual 665 points

    Dear Gautam,

     

    Yes, I neglected to report the issue. The last time I tried to program the device, my PC somehow freezed, and I had to reset the system. Does it mean,  the processor is dead? I have tried unlocking it with Uniflash, it didnot recover. Is there any way to prove that it is deadlock?

    Regards,
    Adnan

    This is what I get when tried to unlock and then erase part of the flash memory:

    [15:55:20] C28xx: Starting device unlocking...

    [15:55:20] C28xx: Device unlocked. To clear the programmed password, please erase Sector A of Flash memory.

    [15:55:38] C28xx: Erasing Flash memory...

    [15:55:40] ERROR >> C28xx: Flash Programmer: Error erasing flash memory. Error erasing Sector E

    [15:55:41] Flash operation Erase failed on core Texas Instruments XDS100v2 USB Emulator/C28xx .

     

  • 0 in reply to Adnan Kurt
    Guru 192875 points

    The last time I tried to program the device, my PC somehow freezed, and I had to reset the system. Does it mean,  the processor is dead?

    Yes, this is the main cause of the controller getting bricked. Anyways try selecting only 1 sector at a time erase it and try to program on the same sector. Let me know what you observe.

    Regards,

    Gautam

  • 0 in reply to Gautam Iyer
    Intellectual 665 points

    Dear Gautam,

    I have tried erasing one sector at a time as well. Does not work, I cannot reprogram. Should I replace the processor?

    Best Regards;

    Adnan Kurt

  • 0 in reply to Adnan Kurt
    Guru 192875 points

    Yup Adnan there doesn't seem any other option left.

    Regards,

    Gautam

  • 0 in reply to Gautam Iyer
    Intellectual 665 points

    Thanks Gautam.

    I am a bit dissappointed. That means I have to make sure that the Flash write operations must never cease during the lifetime of the application board. And that helped me to understand that I should not use internal flash for variable storage which requires FlashAPI to be used in the field.

    Good point is I could made my mind :)

    Regards,

    Adnan

  • 0 in reply to Adnan Kurt
    Guru 192875 points

    Yup, Adnan just be careful :)

    Good luck & Regards,

    Gautam

  • 0 in reply to Gautam Iyer
    Intellectual 355 points

    Hi,

    I just wanted to report about the same problem. We've produced 8 boards with 28069 MCU, and two of them cannot be reprogrammed. I could program them once, but after that an error occurs when erasing flash. No locking was used and the programming did not interrupt at any time. After LOTS of trying, i managed to erase and program one of the boards, but only once. after restart flash erasing was not accessible again. I understand, that most probably the only way will be to replace the chips, but I wanted to let TI know anyway.