It was set to USBINVERT and I changed it to no. Since I turned it on tonight its not even transmitting so I'm not sure whats going on. The serial port is set as default, but I'm not sure if its correct or what the setting would be. This is a PIhat so it sits on the GPIO ports and not in a USB port. I'm able to make changes in the sa818-menu and it writes ok so I assume the port is ok.
