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Altera_Forum
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12 years ago

SignalTap working on Windows but not on Linux

Hi! I'm having some problems when trying to use SignalTap on Linux. I'm using two different setups: - DE2 development board with integrated USB Blaster - Custom board (EP4CE15) + ext...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

What do you mean by "some problems"? I have some problems with Signaltap under Linux with an EEBlaster. I can use signaltap, configure the triggers, it triggers at the correct time but the waveforms reported don't look correct, as if there was a shifting between the different signals.

AFAIK it is a problem in the FTDI driver in Ubuntu. The EEBlaster uses different FTDI chips than the USB Blaster. It shouldn't be a problem, and actually it isn't under Windows, but with Ubuntu we have this strange behaviour. From what I've heard this doesn't happen with Red Hat Linux.