Limited availability
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.
Note: This feature is available in Dedicated Web Workers.
The setSignals() method of the SerialPort interface sets control signals on the port and returns a Promise that resolves when they are set.
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.
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