Forum Discussion
Altera_Forum
Honored Contributor
Honored ContributorNeed help! Weird CycloneII LED assignment problem!
Hey guys, My pins on board don't work as what they should do according to pin assignment. In my design entity, I have outputs LEDR0, LEDR1... LEDR5. I assigned them to correct LED pins, no...
Altera_ForumHonored Contributor
Honored Contributor"nothing has been assigned to the pin where LEDR7" would mean, that it should be set according to the unused pins default. I can't imagine a reason, why the fitter should assign anything different here, but you should check in the fitter pinout report. Personally I don't like the "driving ground" feature, because there's always a certain risk, that unused pins are connected different in the hardware design and could be possibly damaged in this case. But that's a different problem.
Anyway, what happens, if you drive the R7 output explicitely to GND? I assumed first, that you are driving the LEDs active low, but understand, that they are active high, most likely you have a DE-2 board?
