Android Things: Connect to Serial Debug Console

Question

I've been trying to connect to the serial console of a Raspberry Pi 3 with Android Things using USB to TTL cable from my Linux (Ubuntu) machine. Despite I connected the cable as per the documentation, all I get when executing the minicom command is the following

with no chance to type in any character. So I neither can see any kernel messages nor shell into the device.

What am I missing?

Answer 1

Windows (with PuTTY)

1. Install PuTTY
2. Connect the board to machine with USB-to-TTL cable and find out the COM port using Windows Device Manager. You should look for the the one called USB Serial Port (in my case it was COM3).
3. Run PuTTY and set it up. Use the speed as per the documentation (115200):

4. Hit Open and type a command in a terminal window popped up.