GPIO usage C++

Autonomous Machines Jetson & Embedded Systems Jetson Nano
1

Hello everyone,
I’m having some trouoble using the GPIO of the Jetson Nano.
I’ve tried both python scripts and C++ scripts with absolutely no results.
I’ve found c++ scripts here: GitHub - jerrymhlee/jetsonTX2GPIO: A straightforward C/C++ library to interface with the NVIDIA Jetson TX2 Development Kit GPIO pins. (i know those are for Jetson TX)
and python scripts from /usr/share/doc/jetson-gpio-common/samples

I’m used to work with Raspberry Pi’s GPIO so I know how to use pins, buttons etc.

I’ve recently swapped to Jetson for a project. I installed python 3.6 from pip and directly went for the simplest examples (simple_input.py) but it doesn’t read the value correctly.

Can someone help me? my doubt is: do I need some other configuration? some jumper to be closed or open?

thank you in advance

3

how about using Jetson-IO tool for GPIO configuration.

4

Hi, thank you for your reply!
I googled a lot and found this: GPIO Interfacing – NVIDIA Jetson TX1 - JetsonHacks
A pulldown resistor to the GPIO pin was needed and the signal coming from the 3v3 pin.
Close the topic!
Thank you!