Hi @jpeyron,
Thank you for the pointer. I faithfully followed the tutorial and got the echo server working on the board. But I had to sidestep a bit at step 12.2 (setting STDIO connection to console), because I simply did not see "STDIO Connection" tab. I am using 2018.1 Vivado, so wonder if this is some recent change in the tool, though I also did not see anything resembling the functionality of redirecting STDIO connection. So I had to check my router to see if there's any new device, got its IP, then telnet to it with port 7, and actual echoing seems to work.
Do you know if the missing STDIO tab is due to the new version of the tool, or because something else is going on, such as UART connection is not recognized?
Thank you.
UPDATE : It seems that "STDIO connection" tab is no more, but I was able to achieve the same connection from UART to SDK using "SDK Terminal" window, click on "+" to make connection to /dev/ttyUSB0 at baudrate 9600.