We are trying to use gpio78 as a gpio output pin. We have it setup through sysfs and on this jetson nano, the output doesn’t go to 0.0v
In this trace we were doing:
echo 0 >> /sys/class/gpio/gpio78/value
Everytime we run the command, the output voltage dips to 1.5v but the value immediately shoots back up to 2.9v (without even doing echo 1)
We tried this on another jetson nano with the same linux version/device tree and it goes to 0.0v just fine.
What could this be? There is no load connected when doing this test on either the good/bad jetson.