The setSignals() method of the SerialPort interface sets control signals on the port and returns a Promise that resolves when they are set.

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.