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Serial over Ethernet with HA (piefed.zip)

submitted 1 month ago by SwingingTheLamp@piefed.zip to c/homeassistant@lemmy.world

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I just picked up a 4K commercial display to upgrade my TV for cheap. It has an RS232C port on the back for control, and Home Assistant has a native integration to control it via a local Linux tty. The hitch is that my Home Assistant server is located in a spot not near the television, and running physical serial line to it would be inconvenient. But, since I have a Raspberry Pi connected as the streaming media box, I should be able to plug a USB adapter into it and route the serial data over the network, right?

Is there a a good way to do this in HAOS?

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[–] SwingingTheLamp@piefed.zip 2 points 1 month ago (1 children)

Thanks! I've got the TV end covered, the issue is at the HAOS end. The LG serial TV integration talks to a Linux device node (e.g. /dev/ttyUSB0), so the issue is stuffing the TCP stream back into a pty.

[–] CondorWonder@lemmy.ca 10 points 1 month ago (1 children)

That’s what they’re saying - you can use an ESP32 device as a serial proxy without having to do anything special. If you already have a device attached to it you could use the socket:/… syntax below.

Per the integration documentation:

Port

The serial port the TV is connected to. This can be a local device path or a remote serial proxy URL. For example, /dev/ttyUSB0 (USB adapter), socket://192.168.1.100:2000(network proxy), or socket://esphome-device.local:6638 (ESPHome).

[–] SwingingTheLamp@piefed.zip 2 points 1 month ago

Oh, nice, thanks!

(Oddly, the documentation that came up when I looked didn't mention the socket options.)