GPIO Mapping in pinmux sheet to Jetson.GPIO python lib

[r.vries]

Hi all,

Considering the gpio pin below (211)

How am i supposed to drive this pin using the Jetson GPIO library? I am using a custom carrier board so I am not able to directly use the gpio pin header numbers. I am able to drive the pin using “echo 1 > PAC.06/value” however I would prefer a python script.
As the documentation says I can use the TEGRA_SOC names to drive this pin, however when I use the signal name “GPIO09” I get a ValueError: Channel GPIO09 is invalid Ive also tried GPIO3_PAC.06 but this also gives the same result.
Which string do I need to use to drive this pin?

Thanks!

[KevinFFF]

Hi r.vries,

Is your custom board desgin similar to the devkit?
If yes, you could try using Jetson GPIO, or add your own gpio configuration in the following.
jetson-gpio/gpio_pin_data.py at master · NVIDIA/jetson-gpio · GitHub

Or you could just use kernel level command with export to control GPIO.

#cat /sys/kernel/debug/gpio

Or you may refer to the following topic to access GPIO:
Jetson Nano Fast GPIO C++ Example with Direct Memory Access (DMA) - Jetson & Embedded Systems / Jetson Nano - NVIDIA Developer Forums