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Altera_Forum
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9 years ago

Using EPCQ to load Nios

1) Why can't I get past "No EPCS registers found"? If I try "nios2-flash-programmer --device=1 --base=0x42000000 --epcs --debug" I get: Using cable "USB-Blaster [USB-0]", device 1, instance 0x...
Altera_Forum's avatar
Altera_Forum
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9 years ago

Thanks for your reply. I don't want to use Quartus II Programmer because

a) I don't want the whole chip to be erased each time I program,

b) I want the NIOS Cpu to be able to program the EPCQ flash itself, and so the nios2-flash-programmer has to work.

I'm using a Cyclone V 5CSTFD5D5 part.

I have read an736, thank you. Is there any particular part you wanted to refer to?

I think the pertinent point was from Cris72, when he said the EPCS pins need to be configured as general purpose I/O - but Quartus 15.1 doesn't let me do that.