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Altera_Forum
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11 years ago

Cyclone IV Transciever Starter Kit Automation Issue MAX_error LED stuck on.

We have an automated test system running with Cyclone IV Transciever Cards acting as PCIe EP's. Our automation system load the .elf to the card memory via a NIOS console running on a host PC. ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

Solved .....

I took a Cyclone card to my office, connected it to USB on my Laptop and ran nios2-terminal from the NIOS Command Shell and got a connection.

Next, I powered down the Cyclone card and then powered back on using the brick power and the card power slide switch. The resulting behavior is a red MAX_ERROR LED. I will tell the automation team not to do it or to somehow release the connection before cycling the Cyclone PCIe slot power. .

I tried this by terminating the nios2-terminal session with CNTL-C and in that state, the card can be power cycled without disconnecting the USB cable +5 VDC and the FPGA is configured without any issue.