About Flutter Serial Communication

This library aims to ease Flutter Developers to do serial communcation with their peripherals without too much hassle.

Currently supports Android USB (OTG) to communicate with Arduinos and other USB serial hardware on Android WITHOUT using root access.

Installing

1. Install it to your flutter project

flutter pub add flutter_serial_communication

or by adding dependencies to your package's pubspec.yaml then run dart pub get

dependencies:
  flutter_serial_communication: 0.2.5

2. Import it in your .dart file

import 'package:flutter_serial_communication/flutter_serial_communication.dart';

Features

• Doesn't require root in Android
• Easy to use
• Using listener for reading message & device connection status

Functions

• Get All Available Devices:

final _flutterSerialCommunicationPlugin = FlutterSerialCommunication();

List<DeviceInfo> availableDevices = await _flutterSerialCommunicationPlugin.getAvailableDevices();

• Connect:

final _flutterSerialCommunicationPlugin = FlutterSerialCommunication();

DeviceInfo device = DeviceInfo(); // DeviceInfo from getAvailableDevices()
int baudRate = 0; // Your device's baud rate
bool isConnectionSuccess = await _flutterSerialCommunicationPlugin.connect(device, baudRate);

• Disconnect:

final _flutterSerialCommunicationPlugin = FlutterSerialCommunication();

await _flutterSerialCommunicationPlugin.disconnect();

• Write:

final _flutterSerialCommunicationPlugin = FlutterSerialCommunication();

bool isMessageSent = await _flutterSerialCommunicationPlugin.write(Uint8List.fromList([0xBB, 0x00, 0x22, 0x00, 0x00, 0x22, 0x7E]));
debugPrint("Is Message Sent:  $isMessageSent");

• Read (Listener):

final _flutterSerialCommunicationPlugin = FlutterSerialCommunication();

EventChannel eventChannel = _flutterSerialCommunicationPlugin.getSerialMessageListener();
eventChannel.receiveBroadcastStream().listen((event) {
  debugPrint("Received From Native:  $event");
});

• Device Connection Status (Listener):

final _flutterSerialCommunicationPlugin = FlutterSerialCommunication();

EventChannel eventChannel = _flutterSerialCommunicationPlugin.getDeviceConnectionListener();
eventChannel.receiveBroadcastStream().listen((event) {
  debugPrint("Received From Native:  $event");
});

Implementation

• Android: Bridging from native Android library usb-serial-for-android