I have a question about gpio testing environment.
I want to check gpio value so I connected between PIN #31 (sysfs 200) and PIN #34 (GND) directly in Jetson Nano. I attached cable connection picture.
And I run below command.
echo 200 > /sys/class/gpio/export
I want to check that changing value, but the value is always 0.
How can I check GPIO value changing? I want to check GPIO pin is worked in software.