Hi @KevinFFF
Thank your reply!
I understood the UART3/C is only for debugging purposes.
In fact, that port is what we are using for. However, we are exploring customizing the debug UART interface at the hardware level from the development kit design found in the NVIDIA Jetson AGX Orin Developer Kit Carrier Board Specification:
to the following Planned Design:
We already tested the Planned Design, but we got output messages very different from the devkit UART debug port output. That is the reason why we wanted to check the UART3 port instance in the JetPack 6 sources device tree.
Please, check the following debug files so you can see the differences:
serial_port_debug_files.zip (27.5 KB)
Questions for the NVIDIA team
- According to the planned design, could we see the same output as when we use the devkit serial port?
- I understand that the UART3 device tree instance should not be changed in the device tree, but according to the planned design, should we keep the instance as is too?
- Are the Debug MCU and Level Shifters needed? Or could we replace them with the USB to UART FT232RNQ chip and get the same results?