How to enable flow control (CTS/RTS) for Jetson Orin Nano Development Board?

Hello there!

A module that I’m using requires flow control over UART and I just can’t find anything about this for Orin Nano on the web, documentations and the data sheet. There are some forum posts about this for other Jetson boards and they are definitely the most undescriptive posts I have ever seen.

It’s fine using just RX and TX pins. Need assistance about RTS and CTS pins (For UART #1, 40 pin header). I would really appreciate if someone could forward me to some direction.

After hours of research I’ve finally come across this: Configuring the Jetson Expansion Headers — Jetson Linux Developer Guide documentation

Looks like this jetson-io script is the way. “Jetson 40pin Header > Configure header pins manually > uarta-cts/rts”, saved, restarted and looks like it’s working! I hope this will help those who are in search.

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