Jetson Orin Nano gpio stuck at intermediate voltage level

Robotics & Edge Computing Jetson & Embedded Systems Jetson Orin Nano
1

On my Jetson Orin Nano devkit I have a number of pins which are stuck on odd configurations. For example, on pin 15 (aka GPIO12, aka PN.01 aka 85) is permanently stuck on ~2V. I have attempted to restart the device, reconfigure jetson-io.py, and have also tried the following commands with no results:

sudo gpiofind PN.01
sudo gpioset --mode=wait 0 85=0
sudo gpioset --mode=wait 0 85=1

The pin stays consistently at ~2V.

Similarly, none of the python sample test codes work which make use of GPIO.HIGH, GPIO.LOW, and GPIO.PWM

What could cause this? I have identical other jetson orin nano devkit which does not experience this issue. Any other steps for debugging other than re-flashing jetpack?

3

Hi uko,

What’s the Jetpack version in use?

Do you use the same Jetpack release on another Orin Nano devkit?

Please share the result of the following command at this moment.

//SOC_GPIO39
$ sudo busybox devmem 0x02440020
4

The Jetpack version in use is 6.1 .
The second non-faulty nvidia jetson orin nano devkit also uses Jetpack version 6.1 .
The output from:
sudo busybox devmem 0x02440020
0x00000404

5

It is not the expected result to use the pin as GPIO.
Do you run gpioget before gpioset command?

Please apply the patch from 40hdr - SPI1 gpio padctl register bit[10] effect by gpiod tools in JP6 - #20 by KevinFFF to check if it could help in your case.