Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The setSignals() method of the SerialPort interface sets control signals on the port and returns a Promise that resolves when they are set.
js
setSignals()
setSignals(options)
options Optional
An object with any of the following values:
dataTerminalReady
A boolean indicating whether to invoke the operating system to either assert (if true) or de-assert (if false) the "data terminal ready" or "DTR" signal on the serial port.
requestToSend
A boolean indicating whether to invoke the operating system to either assert (if true) or de-assert (if false) the "request to send" or "RTS" signal on the serial port.
break
A boolean indicating whether to invoke the operating system to either assert (if true) or de-assert (if false) the "break" signal on the serial port.
A Promise.
InvalidStateError DOMException
Returned if the port is not open. Call SerialPort.open() to avoid this error.
NetworkError DOMException
Returned if the signals on the device could not be set.
| Specification |
|---|
| Web Serial API # dom-serialport-setsignals |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
setSignals |
89 | 89 | No | No | 75 | No | No | No | No | No | No | No |
© 2005–2023 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/SerialPort/setSignals