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Altera_Forum
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15 years ago

JTAG UART & nios2-terminal comm problems

All-- I've got a JTAG UART issue I'm running into and I'm hoping someone out there might be able to help out. For whatever reason, nios2-terminal loses connection on an intermittent basis. It...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

We did some preliminary scoping on the various JTAG lines and then compared that to what we saw with the starter board. We didn't see much difference to be honest.

We had an FAE in yesterday for some training and to look at our design. He saw two things that might be mitigating factors -- inductance from the kludge-wires may be to blame, and we are using a Terasic USB Blaster rather than an Altera branded USB Blaster. He mentioned that the signals between the Terasic USB Blaster and the device may not be as clean as they would be with an Altera USB Blaster due to cabling. We are going to get a loaner Altera USB Blaster to see if that improves things.

I'll post results from that testing and if I learn anymore.

--tim