What is the best way to access serial ports in a tauri app?

[tgirotto]

I can think of two options:

1. Use an npm package like serialport, but I am not sure it's possible;
2. Spin up a backend server that has access to the serial port apis and use http to communicate with the tauri app.

Any advice?

[nothingismagick]

Use https://docs.rs/serialport/4.0.1/serialport/ and create a tauri plugin that offers a JS API.

[thadguidry]

Great idea, expand the Tauri ecosystem, create a plugin, so that the next person with the same problem can just use it! And then the community itself can help you maintain the plugin, you wouldn't be alone!

[carlos22]

There seems to be a plugin available here: https://github.com/lzhida/tauri-plugin-serialport

[bastian2001]

Did you get it to work? I can only write to the serial port, but not read from it. I do not understand the difference between read and listen, and I don't get any data, even though I have verified the program on the MCU to be functional (just a basic Serial mirror).

It also seems weird that the read function has no callback function to do something when data was received, or a buffer to put the bytes in once received. It also only returns a void Promise, so there's nothing to be taken from the read function, if I understand it correctly.

[nathanbabcock]

Doing it in Rust is probably the safest bet as people have mentioned, however there is also a Web Serial API to do it purely browser-side:

https://developer.mozilla.org/en-US/docs/Web/API/Web_Serial_API

Looks to be supported in Edge (Webview), if WIndows is your target platform: https://caniuse.com/web-serial

[carlos22]

But I doubt it is usable from WebView2. As this is a feature with security implications I think they disable it for embedded views or at least you need to configure something to make it work. But I did not try it...

[hanckmann]

Currently I am also looking into this and I would like to do it in Rust.
Still, the same question is valid... what is the good way to do this?

[hansSchall]

I can confirm that WebSerial works in WebView2/Tauri.

It would be nice if there were a permission handler api in rust (like https://www.electronjs.org/docs/latest/tutorial/devices#web-serial-api), instead of showing the default Edge serial permission dialog.

[earthtosid]

This guy did it

[s00d]

my version for tauri 2 https://github.com/s00d/tauri-plugin-serialplugin

[mrchypark]

may this support ios?