I'm brand new to Node-RED and serial communication setups. I have two Raspberry Pis and I'm attempting to get them to communicate via serial ports. One Pi is using an RS485 CAN HAT, and the other Pi is using a DTech USB RS485 USB adapter.
Problem: Both Raspberry Pis appear to transmit fine through their respective serial ports, but neither one shows any receive messages in the debug window.
The Pi with the USB adapter shows a Rx LED and Tx LED at the appropriate time, so I know both devices are transmitting. When the USB adapter is plugged into a PC (not running Node-RED), the message is received and displays without error, so I know the wiring is correct.
It seems simple, what am I missing? I searched the forum, but couldn't find anything helpful.