serial_port_core

The serial port interface shared by usb_serial_next (USB OTG on Android) and bluetooth_serial_next (Bluetooth Classic SPP on Android). Pure Dart, no dependencies.

SerialPort: input (Stream<Uint8List>, buffered until you listen), write, isOpen, closed (with the reason), close.
lines() and writeText(): UTF-8 (or another encoding) lines split on \n, \r\n and \r, also across chunks.
SerialException with a SerialError for every failure, the same values in both plugins.

You do not need to add this package to use either plugin: both export it. Depend on it when you write a protocol (Modbus RTU, ELM327, ESC/POS, AT commands, your own) that should work over any transport:

import 'package:serial_port_core/serial_port_core.dart';

class Elm327 {
  Elm327(this.port);
  final SerialPort port;

  Future<void> reset() => port.writeText('ATZ\r');
}

// Elm327(await UsbSerial.instance.open(usbDevice));
// Elm327(await BluetoothSerial.instance.open('00:1D:A5:68:98:8B', channel: 1));

For tests, implement SerialPort with a StreamController; see test/serial_port_core_test.dart.

Errors

`SerialError`	When
`permissionDenied`	No permission for the device, or the user said no
`deviceNotFound`	The device is not attached or not known
`unsupportedDevice`	No driver knows the device (USB)
`disconnected`	The connection was lost while open
`portClosed`	The port was closed before or during the call
`busy`	Already open, here or in another app
`invalidArgument`	A value out of range
`unsupportedOperation`	The device or platform cannot do this
`timeout`	The operation did not finish in time
`adapterOff`	The radio is off (Bluetooth)
`notPaired`	The device has to be paired (again) (Bluetooth)
`connectionFailed`	The device did not take the connection (Bluetooth)
`io`	Anything else; see `message`

License

MIT, see LICENSE.

serial_port_core

Errors

License

Libraries

serial_port_core package