Is it possible to assign UART 2 to spare pins on the 40-pin header in the dev kit carrier board? I’d like to have all three UARTs available. I’m assuming the debug serial port is UART0, and UART1 is available on the 40-pin header already.
Hi rmann,
Please refer to the following thread about the UART usage for Orin NX/Nano.
OrinNX : How to check UART is working? - #3 by KevinFFF
Do you mean the UART interface on M.2 Key E?
If so, it could not be used from 40-header pins because it is hw routing to M.2 Key E.
Oh I see, UART2 is the debug UART.
I was hoping that the pins on the 40-pin header could be reconfigured with alternate functions to expose more UARTs. On my Nvidia dev kit I’m using one M.2 slot for an SSD, and one comes with Wi-Fi installed. Alas, that appears to be the E-key slot, and thus I can’t access the UART.
Yes, there’s only one UART(UART1) on 40-pin header could be used.