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error while debugging...

chandu dusa
Intellectual 870 points

Other Parts Discussed in Thread: TMS470MF06607

Hi  

I successfully built the ccstudio c6678 example project and got the .out file.Then while debugging i got an error message 

Error connecting to the target:
(Error -2131 @ 0x0)
Unable to access device register. Reset the device, and retry the operation. If error persists, confirm configuration, power-cycle the board, and/or try more reliable JTAG settings (e.g. lower TCLK).
(Emulation package 5.0.838.0)

please help me ,Thank you.

  • TI__Guru**** 474801 points

    Hello,

    Try the following:

    -Update to the latest CCS version (5.3.0.00090). If that does not help, try testing your JTAG connectivity:

    http://processors.wiki.ti.com/index.php/Debugging_JTAG_Connectivity_Problems

    Please post the results of the test

    Thanks

    ki

  • in reply to Ki
    Intellectual 865 points

    I have XDS100v2 and my device which based on TMS470MF06607.

    CCS version 5 tells me error:

    Error 2131. Unable to access device register. Reset the device, and retry the operation. If error persists, confirm configuration, power-cycle the board, and/or try more reliable JTAG settings (e.g. lower TCLK).

    Testing my JTAG connectivity by Debug JTAG GUI tells:


    -----[An error has occurred and this utility has aborted]--------------------

    This error is generated by TI's USCIF driver.

    The value is '-235' (0xffffff15).
    The title is 'SC_ERR_PATH_DR_BROKEN'.

    The explanation is:
    The data scan-path cannot circulate bits, it may be broken.
    An attempt to scan the JTAG data registers has failed.
    The target's JTAG data path appears to be broken
    with a stuck-at-ones or stuck-at-zero fault.

    Please, help me

    Regards, Roman


  • in reply to Roman Zavyalov
    TI__Guru**** 474801 points

    Hi Roman,

    Roman Zavyalov said:

    The title is 'SC_ERR_PATH_DR_BROKEN'.

    The explanation is:
    The data scan-path cannot circulate bits, it may be broken.
    An attempt to scan the JTAG data registers has failed.
    The target's JTAG data path appears to be broken
    with a stuck-at-ones or stuck-at-zero fault.

    This is a serious error - basically your connection failed the most basic of communication tests. This is usually an issue related to the hardware being bad. Check the JTAG hardware connections on your board.

    ki