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Observer boy_fpga
Observer
6,084 Views
Registered: ‎10-01-2011

Looking for simple examples for my Atlys

Hello, I have a Atlys board with Spartan 6, I'm looking for some simple examples like blinking LEDS... that can be used for configuring the FPGA through memory stick (in .bit format) just for testing purpose.. this morning I accidentaly broke the USB PROG port, and while trying to resolder it, I feared like I damaged the board even more... so I just wanted to test it (I have no JTAG cable, neither can use ADEPT port since it is broken..)

Thank you very much...

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5 Replies
Scholar joelby
Scholar
6,080 Views
Registered: ‎10-05-2010

Re: Looking for simple examples for my Atlys

I've never tried using the USB host port configuration facility, but have heard that it doesn't work at all. You could try contacting the author of that page to ask if he had any more luck with it.

 

Okay, I've just tried it, and it didn't work! I've attached a bit file for the Atlys that will flash LEDs in a pleasing manner. I didn't check with an oscilloscope to see if the FPGA made any attempt to configure itself, but wouldn't be surprised if the facilty wasn't finished by Digilent.

 

You might want to consider buying a JTAG cable. Digilent sell a couple, and you can find them on eBay.

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Observer boy_fpga
Observer
6,069 Views
Registered: ‎10-01-2011

Re: Looking for simple examples for my Atlys

thank you, I tried with the attached .bit, I loaded the JP11, turned on the board, and tried the same thing with 3 different memory sticks.... unfortunately.... no one of these seem to work.... :-(

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Scholar joelby
Scholar
6,061 Views
Registered: ‎10-05-2010

Re: Looking for simple examples for my Atlys

You could ask Digilent what the deal is with this functionality. I have a suspicion that they erroneously copied and pasted this part from another development board's manual.

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Visitor prophet36
Visitor
6,057 Views
Registered: ‎08-13-2011

Re: Looking for simple examples for my Atlys

I made a basic (programming only, no ChipScope) Xilinx-compatible USB-JTAG cable for £5, if it's any use to you.

http://www.makestuff.eu/wordpress/?p=1927
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Scholar joelby
Scholar
6,021 Views
Registered: ‎10-05-2010

Re: Looking for simple examples for my Atlys

I saw your thread on edaboard.com and noted that mrflibble had successfully configured the FPGA using a USB drive, so I tried again. Indeed, it works! It just takes about 25 seconds and it turns out I'm not patient enough.

 

My drive is formatted as FAT32 and was 1 GB. The .bit file was the only file present. Long and short filenames both worked.

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