tty_flip_buffer_push() sends data back to itself

Question

I am trying to run tiny_tty in LDD3. When I use \"cat /dev/ttty0\" to read from it, there is no output and the command is blocked.

Checking the trace, I notice both

Answer 1

Your terminal device has ECHO enabled. You can turn it off (and control other flags as well) with stty command:

stty -F /dev/ttty0 -echo

or use a proper terminal emulation program like picocom or minicom.