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With the release of the new Jetson Nano also comes the 4.2 release of nVidia’s Jetpack BSP for the Jetson. This included a new python library called Jetson.GPIO which provides a familiar interface for anyone who has used RPi.GPIO before. However, it doesn’t seem to be installed by default, so here are the instructions for getting it loaded into python!

# Setup groups/permissions
sudo groupadd -f -r gpio
sudo usermod -a -G gpio your_user_name
sudo cp /opt/nvidia/jetson-gpio/etc/99-gpio.rules /etc/udev/rules.d/
sudo udevadm control --reload-rules && sudo udevadm trigger

# Reboot required for changes to take effect
sudo reboot

Now we need to install Jetson.GPIO:

sudo pip3 install Jetson.GPIO
sudo pip install Jetson.GPIO

After this we should be able to import the library in both versions of python:

nvidia@tx2:~$ python3
Python 3.6.7 (default, Oct 22 2018, 11:32:17)
[GCC 8.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import Jetson.GPIO
>>>
nvidia@tx2:~$ python
Python 2.7.15rc1 (default, Nov 12 2018, 14:31:15)
[GCC 7.3.0] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import Jetson.GPIO
>>>

Happy hacking!