Jetson Nano GPIO setting LOW or HIGH problem

Robotics & Edge Computing Jetson & Embedded Systems Jetson Nano
1

Hello,

I have a Jetson Nano Developer Board and i tried to power up another device with Jetson’s GPIO port, similar to ESP32 set PIN method.

I read these documents with no luck:

The ESP32’s method works like this: Configure GPIO 33 as digital I/O - ESP32 Forum

Is there any way to control Jetson’s GPIO similar to ESP32?

Thanks in advance.

Your sincerely:
Peter

3

hello peter90,

could you please refer to GitHub - NVIDIA/jetson-gpio: A Python library that enables the use of Jetson's GPIOs,
thanks

4

Dear JerryChang,

Thank you for your reply. I read this description, but it not helped. Let me to clarify my problem. I try to power up another device with Jetson’s GPIO ports. I have two wires (PWR and GND, generally red and black wires). My question is is it possible to do this in this way? Or i need another device, circuit or anything else?

I have default installation with the latest JetPack version (4.5.1). I didn’t set up pinmux. I tried the samples in this directory (/usr/share/doc/jetson-gpio-common/samples). The test_all_pins.py script didn’t helped me.

So i ask for help in this issue.

Thanks in advance.

Your sincerely
Peter

5

hello peter90,

you’re working with 40-pin expansion header, port J41, right?
please check Jetson Nano J41 Header Pinout for provided voltage.
you may also check Applications Note of 40-pin expansion header for reference,
thanks

6

Dear JerryChang,

Yes, I’m working with a 40-pin expansion header (port J41). I read the desciption what you’ve sent, i understand and i read about TXB voltage translator before. I tried to configure GPIO port based on this description (https://maker.pro/nvidia-jetson/tutorial/how-to-use-gpio-pins-on-jetson-nano-developer-kit) without luck. I tried to measure the output voltage on GPIO 18 port, i measured 1.4V with and without HIGH settings. I tried to measure additional ports too, but I experienced the same. Could you help me to find the right settings to set described port HIGH or LOW position?

Thanks in advance.

Your sincerely
Peter

7

hello peter90,

could you please check this topic as see-also.
thanks

8

Dear JerryChang,

I read the description what you sent, but it wasn’t helped to me. I try to solve this issue another way. Thank you for your help.

Have a nice day! :)

Your sincerely
Peter

9

hello peter90,

am I understanding correctly that this issue has already resolved.
please share some info for reference, thanks