Has anyone given Android Things a go with the Raspberry PI 3?
I have been struggling for the last day or 2 to get the UART working. I can see the port go active when my app starts and the TXD and RXD lines go high but I am seeing nothing on the TXD line when I send data. Also if I try to read the input from a device that sends every second, I see no bytes received either. 
I think this is a configuration issue but I have been unable to get anything to work. Originally I saw the console output until I disabled this on the command line configuration so I know at least that the port works.