Dear teachers
I want to use UART2 in Orin nano 4gb so that this port can not only generate logs when the system starts, but also debug software.
But I can’t find ttyTHS2 in the dev directory, what should I do to use UART2?
Hi 403199668,
Do you mean the /dev/ttyTCU0?
If so, this is the debug UART port, which is a Tegra Combined UART and you can get serial console log from or debug through it.
Sorry, I didn’t understand what you meant.
Is it possible to use UART2 by changing “port=ttyTHS2” to “port=ttyTCU0” in the program?
UART0 and UART1 are designed to connect with the GNSS module, and UART2 design to connect with the MCU module.
This old device’s NANO module also connect with debugging serial port to the MCU, and after the system fully started, the UART2 will be used by the program continually.
That’s why I designed the circuit based on old equipment.
If I used UART0 , shoud follow this way.
- Configure the device tree, perform address mapping, and generate ttyTHS1;
- Modify pinmux to load UART0 other than 40pin into pinmux;
- Write programs to debug serial ports.
Sir, I’m not sure if my understanding is correct. If there are any issues, please provide guidance.thank you!
The answer for this topic is NO.
I’ve updated Request to resolve UART debugging issues - #15 by KevinFFF for details.