I’ve seen a few things around involving the use of LinuxGPIO for bitbanging bootloaders and .hex files onto ATMEGAs, but generally using the Raspberry Pi. Is there anybody that’s documented its setup for the Jetson Nano? I ask because I’ve watched the output of each of the 40 GPIO pins with my scope…

Hi, Actually I am not sure whether your tool would work or not. Jetson nano uses basic Linux GPIO framework and sysfs to control the gpio. https://www.kernel.org/doc/Documentation/gpio/sysfs.txt

AVRDUDE and LinuxGPIO Issues

AVRDUDE and LinuxGPIO Issues