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Altera_Forum's avatar
Altera_Forum
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11 years ago

HSMC GPIO Daughter card.

I have a question regarding the gpio-hstc card (http://www.terasic.com.tw/cgi-bin/page/archive.pl?language=english&categoryno=67&no=322&partno=1). I'd like to use this board to expand the gpio of my ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

Well I had a lot of other stuff to get working before I managed to do something with this adapter. But found that I had trouble when using the HSMC_TX_D_P[9?]. This is assigned to the same pin as nCEO. I remember reading something about this but I could not remember the solution. After about 30 minutes I remembered having a similar problem with another board once (I beleve it was the DE2-70) where a pin was configured as a programming pin.

So for others who encounter this and immediately search this forum:

1. Go to Assignments->Device->Device and Pin Options...

2. Open menu Dual-Purpose Pins

3. Set nCEO from "Use as programming pin" to "Use as regular I/O".