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The expression window shows "execution state prevented access" when DSP is running

Ruoyu Zhang
Prodigy 220 points

I am using Code Composer Studio Version: 6.0.0.00190, and connect to the 6713DSK board
by Blackhawk XDS560V2-USB System Trace Emulator. When DSP is running in CCS Debug mode,
the Expressions window shows "execution state prevented access" instead of the value.

I searched this community, and found some answers such as:

e2e.ti.com/.../3261

However, I can't find the option 'Halt the target before any debug access'. Here is the screenshot:

  • 0
    TI__Guru**** 173310 points

    Ruoyu Zhang said:
    However, I can't find the option 'Halt the target before any debug access'.

    Please take a look at this wiki section. It describes where this debugger setting can be found.

    http://processors.wiki.ti.com/index.php/Debug_Handbook_for_CCS#Debug_Properties

     

  • 0 in reply to AartiG
    Prodigy 40 points
    Aarti,

    Thanks for answering that. I had a similar issue in CCS6.2 while bringing up and MSP430FR launchpad.

    The settings was in project properties -> Debug -> Auto Run and Launch Options -> "Halt the debugger before any...etc "

    However, after reading the wiki I am still not clear on what the implication of this setting is. It only says that "will impact servicing of interrupts." Can you provide any other resources to explain exactly what it is this setting is doing? I just want to make sure I understand how changing this setting may affect the timing/execution of the program.