createFromDeviceId static method

Future<UsbPort?> createFromDeviceId(
  1. int? deviceId, [
  2. String type = "",
  3. int interface = -1
])

Creates a UsbPort from deviceId optionally type and interface. throws an error on failure. This function will pop up a permission request if needed. Note deviceId is only valid for the duration of a device being plugged in. Once unplugged and replugged this id changes.

type = One of UserSerial.CDC, UsbSerial.CH34x, UsbSerial.CP210x, UsbSerial.FTDI, UsbSerial.PL2303 or empty for auto detect. interface = Interface of the Usb Interface, -1 for auto detect.

Implementation

static Future<UsbPort?> createFromDeviceId(int? deviceId, [String type = "", int interface = -1]) async {
  String? methodChannelName = await _channel.invokeMethod("create", {"type": type, "vid": -1, "pid": -1, "deviceId": deviceId, "interface": interface});

  if (methodChannelName == null) {
    return null;
  }

  return new UsbPort(methodChannelName);
}