GPIO does not work using jetson-gpio python library

Robotics & Edge Computing Jetson Systems Jetson Xavier NX
1

Hello,
I have installed the jetson-gpio library on my jetson xavier nx. I was tryind to run some example files of the samples folder. Unfortunately, I got always the same error message:

amr@moto:~/Downloads/jetson-gpio/samples$ sudo python3 test_all_pins.py
Testing pin 7 as OUTPUT; CTRL-C to test next pin
Traceback (most recent call last):
File “test_all_pins.py”, line 89, in
GPIO.setup(pin, GPIO.OUT)
File “/usr/local/lib/python3.7/dist-packages/Jetson.GPIO-2.1.3-py3.7.egg/Jetson/GPIO/gpio.py”, line 360, in setup
File “/usr/local/lib/python3.7/dist-packages/Jetson.GPIO-2.1.3-py3.7.egg/Jetson/GPIO/gpio.py”, line 155, in _do_one_channel
File “/usr/local/lib/python3.7/dist-packages/Jetson.GPIO-2.1.3-py3.7.egg/Jetson/GPIO/gpio_cdev.py”, line 189, in chip_open_by_label
Exception: tegra194-gpio: No such gpio device registered

Any suggestions to solve the issue is appreiated.
Thanks
Salvatore

3

Hi saxosun,

Are you using the devkit or custom board for Xavier NX?
What’s your Jetpack version in use?

Do you refer to the following instruction step-by-step to setup Jetson GPIO?
GitHub - NVIDIA/jetson-gpio: A Python library that enables the use of Jetson’s GPIOs
especially the Setting User Permissions part.