Intel® Quartus® Prime Software
Intel® Quartus® Prime Design Software, Design Entry, Synthesis, Simulation, Verification, Timing Analysis, System Design (Platform Designer, formerly Qsys)
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Signal Probe - Source node does not exist

tedh4ddv
New Contributor I
1,154 Views

I've compiled my project.  I've reserved an available pin for Signal Probe output.  When I try to Add Signal Probe Pin, the selected node is not found.  I see an error: Source node does not exist.  Please specify a valid nod.  I know the node exists since I can analyze it's behavior in Signal Tap.  The node is inside the Remote Update IP Core. 

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tedh4ddv
New Contributor I
1,104 Views

I changed node filter to post fitting and was able to select the target node.  The design compiled and the node was accessible at the selected pin.  Thanks for the advice.

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sstrell
Honored Contributor III
1,138 Views

The signal probably got optimized away or renamed.  You were able to tap it in Signal Tap because you can tap pre-synthesis nodes.  Signal Probe only can connect to post-fit nodes, so they must "survive" the compilation process.

Either that or because it's a signal inside an IP, which sometimes can prevent post-fit access.

When you use the Node Finder to find the signal, are you using the Signal Probe filter?

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ShengN_Intel
Employee
1,122 Views

Hi,


You may also try confirming whether that node exists or not by click View > Node Finder, and filter by Signal Tap: post-fitting to view the nodes you can route. Check this link https://www.intel.com/content/www/us/en/docs/programmable/683819/23-3/step-2-assign-nodes-to-pins.html


Thanks,

Best Regards,

Sheng


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tedh4ddv
New Contributor I
1,105 Views

I changed node filter to post fitting and was able to select the target node.  The design compiled and the node was accessible at the selected pin.  Thanks for the advice.

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