PYNQ-Z2 with libgpiod - what's that on line 62?

Support
1

Hi,

I have installed libgpiod on my PYNQ-Z2 with boot image version 2.5.
Libgpiod comes with a number of nice utilities, including gpioinfo, which shows which lines are currently in use, etc.
To my surprise gpioinfo reports that gpio line 62 is in use as an output even before I have loaded my overlay and configured my i/o-lines.
Anyone know what this line is used for, and if/how I can gain control over it? =)

Kind regards, Frank

2

The output of gpioinfo should give you some indication of what it is connected to. If it’s "sysfs" then you can free the pin by going to /sys/class/gpio and catting the appropriate number into the unexport device.

Peter