GPIO - problem defining input and output pin on the same gpio connector...

FPGA, SoC, And CPLD Boards And Kits

FPGA Evaluation and Development Kits

GPIO - problem defining input and output pin on the same gpio connector...

886 Views

Hello everyones!

I know this is a fairly basic question but this puzzel me a lot... I have tried to do a simple loopback on two pins (A0 and A1 on the same GPIO connector on a DE2 kit) defining one as input and the other as output and shorting both pins together but (I know...it is too simple to work!!) Quartus is telling me I cant do that. By defining both pins as inout it work...

Anyones care to explain why? I dont want to stay in that puzzel state the rest of my life!

Link Copied

0 Replies

Community support is provided during standard business hours (Monday to Friday 7AM - 5PM PST). Other contact methods are available here.

Intel does not verify all solutions, including but not limited to any file transfers that may appear in this community. Accordingly, Intel disclaims all express and implied warranties, including without limitation, the implied warranties of merchantability, fitness for a particular purpose, and non-infringement, as well as any warranty arising from course of performance, course of dealing, or usage in trade.

For more complete information about compiler optimizations, see our Optimization Notice.