Not sure when this started, but I can't seem to get any keyboard input in my serial terminal window. No issues however in binding the tty.usbserial interface to the terminal program and getting output from whatever device is connected. But once I start hitting the keyboard, nothing shows on the terminal window.
I have tried zTerm and CoolTerm as serial terminal programs and I'm on macOS Mojave 10.14. Oh and not to forget the built-in "screen" program. Tried several devices with a console port.
ls /dev/tty.* /dev/tty.usbserial-A700HCG8
What can I do to troubleshoot & hopefully fix this issue?