On my Beaglebone Black, I have two config-pin executables. One is a compiled executable from the bb-cape-overlays package, the other is a bash script in /opt/source/bb.org-overlays:
$ which config-pin
/usr/bin/config-pin
$ dpkg -S /usr/bin/config-pin
bb-cape-overlays: /usr/bin/config-pin
$ find / -name config-pin 2> /dev/null
/opt/source/bb.org-overlays/tools/beaglebone-universal-io/config-pin
/usr/bin/config-pin
I have a script that configures specific pins using config-pin in the format:
config-pin P8.8 in-
Which sets pin P8.8 to an input configured as a pull down.
The bash script seems to be the one that accepts that format, the other does not and errors with:
ERROR: open() for /sys/devices/platform/ocp/ocp:P8_8_pinmux/state failed, No such file or directory
The compiled version is the default on my Beaglebone and I’d like to know more about it. For my script to work, I need to use the other one right now. I can certainly update the script if the compiled config-pin is a newer version and recommended practice is to use it, but I can’t seem to make it work right. Any information is appreciated!