XDC error

The Rev. D XDC file has an error in the switch location constraints. Switch 7 is at M15 not M17. The comment (udc constraint) is correct, but the XDC is wrong.
I also have a problem reading SW1, but its constraint matches the schematic and the switch works. Anybody know what that might be? Schematic doesn't match the layout?

-Bill

0 Former Member over 11 years ago

Thanks for reporting the error. We will get it corrected.

-Gary
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0 zedhed over 11 years ago

Hi bill,

Thanks for reporting the error! The XDC under the ZedBoard documentation page has been updated to version 1a to correct the SW7 pin location.

As for reading SW1, I had one ZedBoard which I could not read one of the switch states until I cleaned it out with contact spray. I think in my case, there may have been some sort of oxide or residue preventing the switch from making contact internally. After cleaning, I had no problems after that.

Regards,

-Kevin
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0 Former Member over 11 years ago in reply to zedhed

SW1 fixed itself. I think it is a cold solder joint under the BGA as I could verify the switch worked with an ohm meter.
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