I'm working on a similar issue with using LEDs connected to GPIO pins.  I had thought that as long as the GPIOs are configured as outputs that I could 'echo 1 > gpioXXX/value' or 'echo 0 > gpioXXX/value' to turn the LED on and off but it doesn't seem to be working.

In u-boot's overo.h, I have tried the GPIOs configured as (IEN | PTD | EN | M4) and (IDIS | PTD | EN | M4).  The LEDs on the board simply don't change when I set the pins high/low via the filesystem in /sys/class/gpio.

This is on overo earth btw.

On Thu, Feb 18, 2010 at 5:10 PM, Elliot Mackenzie <macka@adixein.com> wrote:
Hi guys,

I have a Verdex Pro with NetPro and a requirement for USB (host signals).  I also have a requirement for a couple of I/Os (principally to drive LEDs but also one input).  Is the simplest way to do this to add a breakout-vx to the mix?

Incidently, does anyone happen to know a place that sells housings for the Verdex Pro which would fit all this plus some pre-fabricated LEDs and at least one switch?


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