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Info: Program/symbols must be loaded to decode trace data.

Michi Yama
Guru 10030 points

Hi,

I have simple question.

My customer has an issue that  there is not  displayed data on the trace viewer of CCS.

And there is an error message in thier CCS as the below.

             "Info: Program/symbols must be loaded to decode trace data."

I would like to know the meaning of the above message. In my thought, to display the trace data on viewer,

source code is not needed.  But if it is so, what is the meaning of the above message?

 

Please let me know.

Best regards,

Michi

 

  • 0
    TI__Guru**** 163035 points

    Michi,

    Could you provide some information on which version of CCS and which device you are using.

    That error message typically means that you do not have the symbol file loaded for the program.  CCS needs the symbol files in order to decode the trace information.  If you are doing PC trace the trace data is just a series of Program Counter values.  The symbol file is needed to figure out the instruction that was present and the source code correlation.  

    Regards,

    John

  • 0 in reply to JohnS
    Guru 10030 points

    John-san,

    Thank you for your reply.

    CCS version is 5.4.

    BTW, I have one more question regarding EMU pin.

    Should EMU0,1 pin connect between target board and emulator for Core trace with ETB?

    I think so. But I would like to cofirm it.

    Pleae let me know.

    Best regards,

    Michi

  • 0 in reply to Michi Yama
    TI__Guru**** 171729 points

    Michi-san,

    Although specifically for ETB these pins are not needed, I would route them anyways. The issue is that, depending on the device, they can have other features such as wait in reset (core is halted when reset occurs, which may be useful for debugging), setting breakpoints between multiple devices (also called global breakpoints), System Trace or external Core trace (if using a XDS Pro Trace) and so on. Section 4 of this page briefly talks about some other features of these pins.

    Regards,

    Rafael