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Identifying-Mode.md

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Identifying Mode

The machine node can show a sign, e.g. blinking a LED or buzzing, to let a user know where the machine is located. The qnode implementer can override the identify() method to provide this feature. The default implementation does nothing but always returns a InternalServerError(500) response to the Server which sends the identify command to this qnode.

qnode.identify(cb)

Method of identify. Overridable.

Arguments:

1 cb (Function): function (err) {}, the callback you should call when qnode starts the identifying mode.

// In this example, assume that ledDrive is a handle to control the LED.
qnode.identify = function (cb) {
  ledDriver.blink('led1', 10) // starts to blink a LED to tell people where it is
  cb(null)
}