SerialPort.getSignals()
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The SerialPort.getSignals() method of the SerialPort interface returns a Promise that resolves with an object containing the current state of the port's control signals.
Syntax
var promise = SerialPort.getSignals();
Parameters
None.
Return value
Returns a Promise that resolves with an object containing the following members:
clearToSend-
A boolean indicating to the other end of a serial connection that is clear to send data.
dataCarrierDetect-
A boolean that toggles the control signal needed to communicate over a serial connection.
dataSetReady-
A boolean indicating whether the device is ready to send and receive data.
ringIndicator-
A boolean indicating whether a ring signal should be sent down the serial connection.
Exceptions
InvalidStateErrorDOMException-
Returned if the port is not open. Call
SerialPort.open()to avoid this error. NetworkErrorDOMException-
Returned if the signals on the device could not be set.
Specifications
| Specification |
|---|
| Web Serial API # dom-serialport-getsignals |
Browser compatibility
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