Good Afternoon, I have a problem to set up the UART1 ttyS1 on NanoPi NEO Air-LTS I want to use the tiny Neo Air Module with both serial ports for an Dula (W)M-Bus Module from Solvimus Is there a correct layout for the PINs and the way to config the Overlay and somthing else to get it work I try sinc...

Good Afternoon, I have a problem to set up the UART1 ttyS1 on NanoPi NEO Air-LTS I want to use the tiny Air Module with two serial ports for an Dual (W)M-Bus Module from Solvimus. How is the correct layout for the PINs and the way to config the Overlay and somthing else to get it work? I try since d...