Unable to Trigger Waveshare 3-CH Relay via GPIO (Pin 40 / BCM21) on Jetson Orin Nano/NX

Robotics & Edge Computing Jetson Systems Jetson AGX Orin
3

Hi developer311,

Do you configure the pin as GPIO/Output/Drive 0 or 1 in pinmux spreadsheet before use?

For JP6.x, you have to apply the patch from 40hdr - SPI1 gpio padctl register bit[10] effect by gpiod tools in JP6 - #20 by KevinFFF in kernel source to control GPIO.

You can simply replace kernel image (i.e. /boot/Image on your board) to apply the change.