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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
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11 years ago

Thanks Dave ...Yes to page 10 of the schematic , but the red LED is an error indicator and I believe the RED_LED is D1 and associated with MAX_ERROR. Given that, it seems to indicate a load error , and I can trigger on that but this error is pervasive across power cycles until the USB cable is removed ... to me this indicates that the USB cable is holding U5 in some state that causes the U10 MAX II ( EPM2210 ) to flag an error ... possibly not an actual load error but some error ... i would need to check the MAX II code to see what all the sources are of the MAX_ERROR...

I suspect this is a power sequencing issue ... since the emulator I am connected to does alot of power on/ off cycles and I believe there may may be an issue there or else with the automation that runs overnight since when I am manually working at the emulator and power cycle off and on ... I don't see any issues.

I have asked to capture a screen shot of the NIOSII command terminal that is attempting to load a .elf and in this error state, gets an error indicating no USB Blaster is present.

Thanks, Bob.