I have tried several code samples: nrf/samples/bluetooth/peripheral_uart and nrf/samples/openthread/cli. If I set hw-flow-control in zephyr/boards/nordic/nrf9160dk/nrf9160dk_nrf52840.dts for uart0, there is no communication possible through vcom1 to my computer. I have not tried different computers -- this one is Lenovo P51 running Ubuntu 24.04. It was kind of a weird thing for me to enable hw-flow-control, but it happened when I was trying to get openthread/cli running and I saw that some other platforms use hw-flow-control. Any thoughts? Oh, yeah, I am running Serial Terminal on my Ubuntu and I did set RTS/CTS to on (in case default was different). I almost closed this ticket, but when AI said it was due to my misconfigured computer, but I know I have Serial Terminal set up correctly, I figured I'd have you take another look.
Burt