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TMS320F28035 DEVICE LOCKED

sanjay pai
Prodigy 30 points
Other Parts Discussed in Thread: UNIFLASH, TMS320F28035

I am having an issue with the Texas TMS320F28035 programming in Flash. The device seems to be getting locked after trying to program in Flash. During programming using CCS Uniflash it generates an error stating “ Device may be locked or JTAG might be unreliable” . I tried using another JTAG but the same error keeps coming. Also at times during programming it doesn’t generate any error but doesn’t generate the required output too.

PS: the same code runs in RAM with the JTAG connected. Version CCS 6.1

  • 0
    Expert 1720 points

    Hi,


    Check the power source, if the power is not sufficient, you may get these kind of issues.

    Are you trying this on an Eval board? or custom board with custom power supply, If custom power supply check the amount of current its drawing and try to increase that. During flashing the program you need more current.

  • 0 in reply to B M Mohan
    Prodigy 30 points
    Hi

    The power source is an external DC source connected to my RnD prototype SMPS. There seems to be no issue of current limiting here, it is set at max current.
    First time i try dumping i get this error
    -----------------
    error-1015 @ 0x0
    ------------------
    Again when i try dumping, the code gets dumped with the following message
    ---------------------------
    Device calibration not complete, check if device is unlocked and recalibrate.
    ERROR >> C28xx: File Loader : Data verification failed at address 0x00008000 Please verify target memory and memory map
    ERROR >> C28xx: GEL : File abc.hex : a data verification error occured, file load failed

    StringEvenCallBack error !!File abc.hex : a data verification error occured, file load failed
    Operation writing Flash memory returned.
    ------------------------
    But the code runs properly when tried online with RAM.

    Regards
    Sanjay
  • 0 in reply to sanjay pai
    TI__Guru** 113105 points

    Hi Sanjay,

    After connecting to CCS, please check the content of Flash via Memory watch window. If you see Flash content in all sectors as 0x0 then device is LOCKED and it's very unlikely to recover.

    Regards,

    Vivek Singh

  • 0 in reply to Vivek Singh
    Prodigy 30 points
    Hi Vivek

    Thanks for the info. Lemme try it out and check.

    Regards
    Sanjay
  • 0 in reply to sanjay pai
    TI__Guru** 113105 points
    Sanjay, Is this issue resolved ?
  • 0 in reply to Vivek Singh
    TI__Guru** 113105 points
    Closing the post. If you still see this issue, please re-open the post or start a new one.