Hi everyone,
I build a serial gateway (based on an Arduino nano v3) that I'll plug to a Raspberry that will house a NodeJS controller.

I would like to have my Arduino to communicate with the rpi over usb.

So my questions are :
How can I tell the gateway to use the usb to send the data ? (I'm using the default serialgateway code)
And on the RPI which tty should I connect to ?

Thanks !