Hello guys, I have a quick question. How do I enable a different UART in the firmware? I would like to run the RAK2045 with my USB to UART adapter which I connect in the USB port of my Raspberry. I cannot use the ttyAMA0 port because it is used by a different board.
I am currently using a Raspberry 3B+ thanks for your help in advance
To use a USB-UART converter to RPI, you need to determine its name. You can use ls /dev/tty* to check it. If your USB-UART converter is already connected, you should find /dev/ttyUSB0 on the list.
That would depend on the specific purpose for which you wish to use it. It’s not immediately obvious what that would be - GPS? Console? Something else?
What have you wired to the UART pins of this USB-UART adapter?
A simple, reversible way to keep the GPS signals off the pi pins might be to buy an extra stacking header as used on pi hats, cut off pins 8 & 10 of that header, and then insert it between the RAK2245 and the pi.