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Altera_Forum's avatar
Altera_Forum
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9 years ago

SignalTap autotriggers constantly without meeting conditions

Is there a reason SignalTap offloads acquisitions immediately after "Run Analysis" is requested, even when trigger conditions are not met? I tried removing and adding the *.SDC timing commands to me...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

Rysc, msj, and sstrell,

Thank you all for the "magic dust". I really don't know why, but after a few weeks of having this problem and troubleshooting it's working again. During troubleshooting, I even pulled legacy designs and the standard Altera TSE Tutorial off of Altera University and they acted the same way and triggered no matter the trigger condition. Each time, the signals would have been in the same clock domain as the trigger clock.

The only thing I changed just now was I opened up a second instance of Quartus/SignalTap, so that I had two running on my machine at the same time. I'm using the Altera USB Blaster with a DE2-115 Cyclone IV board. Perhaps it had something to do with the driver (as msj had mentioned), and it was fixed by opening up two instances of Quartus/SignalTap.