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BMart12's avatar
BMart12
Icon for Occasional Contributor rankOccasional Contributor
4 years ago
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SignalTap Logic Analyzer waveform display

Hello,

I am using the SignalTap II logic analyzer on Quartus Prime Version : 18.1.1 Build 646 04/11/2019 SJ Standard Edition. I am tracing logic in the Cyclone V SOC. Sometimes whan I run analysis the waveform display presents blue left and right arrows which allow me to locate the next edge in the trace. Sometimes I do not get the arrows. Please le me know what I need to do to activate the arrows. I provide two screen shots, with arrows and without arrows.

Thank you

  • BMart12's avatar
    BMart12
    4 years ago

    I made a new stp file. Prior to running an analysis I punched in numbers starting at 0 for the aliases. I use the signaltap text file to lift the signal names when I record the results of the analysis. When I ran the analysis the arrows magically appeared. I did not even add time bars.

    I had been reusing the old stp file. I wonder if reusing the stp too many times confuses SignalTap. Should I be using a new stp file each time I want to add signals?

4 Replies

  • sstrell's avatar
    sstrell
    Icon for Super Contributor rankSuper Contributor
    4 years ago

    I don't see the arrows in either of your screenshots, but normally you have to select a signal to use the arrows since they are used to jump to the next signal edge for a particular signal. I think you also have to have the master time bar (solid vertical black line) and a reference time bar (dashed line) enabled.

    • BMart12's avatar
      BMart12
      Icon for Occasional Contributor rankOccasional Contributor
      4 years ago

      Thank you for replying. I learned from this exchange that the export to BMP function does not show the arrows. I provide a screen shot. I was fiddling with the master and reference time bars trying to enable the arrows. Per your reply, I tried selecting a signal but was unable to activate the arrows.

      • sstrell's avatar
        sstrell
        Icon for Super Contributor rankSuper Contributor
        4 years ago

        So you're saying you see the Value column but no arrows above it?

        I click where it says "Click to insert a time bar" and the Value column and the arrows appear.