Changing the debug uart baud rate

Robotics & Edge Computing Jetson Systems Jetson Orin NX
1

I am running on L4T 35.4.1 and would like to lower the baud rate of the debug uart port. May I know if it’s possible or strictly only 115200?

5

Hi ZiJian98,

Are you using the devkit or custom board for Orin NX?

May I know the use case why you want to lower its baud rate?

As my understanding, it is a Tegra Combined UART which means that it output logs from several firmwares and the baud rate is configured in each of them. So, you are not able to modify it.

6

Incidentally, for the developer kits, 115200 is already the default baud rate (with 8-bit, no parity, one stop bit).

8

Custom board for the Orin NX. I would like to use another system for Jetson hardware monitoring but the UART does not support 115200 baud rate, so I hoped to lower down the baud rate.

9

115200 is a standard and common baudrate for UART.
I’m not clear about why your “another system” does not support it, but you can try using other interface to transform it to serial to support 115200 baudrate (e.g. SPI-to-Serial, USB-to-Serial..etc).