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Altera_Forum's avatar
Altera_Forum
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8 years ago

GPIO Pin Problems

Hi all, I am attempting to interface an ultrasonic range sensor with the DE2 board through the GPIO expansion header. The device has 4 connections, 5v vcc, ground, trigger, and echo. The 5v and gr...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

Hi Digitalsolace,

Have you assigned pins for both the signal.

Take care of following

I think the issue could be that IOs from a Bank can only be configured as either input or output, aka, If he's using BANK0, and configuring GPIO0 as input, it may not be possible to assign GPIO1 as output. He may need to assign another BANK pin as output.

OR

Here's the Altera QSF file for that board.

ftp://ftp.altera.com/up/pub/intel_material/boards/de2-115/de2_115.qsf

Best Regards,

Anand Raj Shankar

(This message was posted on behalf of Intel Corporation)