RS232

System Node

You can access the COM port on the panel via /dev/ttyTHS0 By default, the baud rate is 115200.

Pin Definition

Please refer to 10-Pin / 8-Pin Terminal Block.

Disable Debug UART

In our pre-built system image, we disabled the debug UART feature of Jetson Xavier NX. If you built your system image, please remember to execute the following commands and reboot to disable the debug UART to properly use the COM port.

sudo systemctl stop nvgetty
sudo systemctl disable nvgetty

Enable Debug UART

In our pre-built system image, we disabled debug UART on the COM port. If you want to use the debug UART, please use the following commands to enable debug UART.

sudo systemctl enable nvgetty
sudo systemctl start nvgetty

# confirm nvgetty status by 
sudo systemctl status nvgetty

Then you can use another computer to connect to the COM port and remember to set the baud rates to 115200. For example, if you connect to NRU-52S from COM 1 of another Linux computer, you can type the following commands to access the debug console.

sudo minicom -b 115200 -D /dev/ttyS0

Please also make sure the "hardware flow control" and "software flow control" are disabled.

Ctrl-A Z to open the menu. Type "O" for "Configure Minicom"

Select "Serial port setup"

Make sure "Hardware FLow Control" and "Software Flow Control" are disabled

Then you will see something like the below while NRU-52S rebooted.