flutter_serial_communication 0.1.0

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 s [...]

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

Android

1. Add jitpack.io repository to your build.gradle (root)

allprojects {
    repositories {
        ...
        maven { url 'https://jitpack.io' }
    }
}

2. Add library to Android dependencies (root build gradle / app build gradle)

dependencies {
    ...
    implementation 'com.github.mik3y:usb-serial-for-android:3.5.1'
}

3. Install it to your flutter project

flutter pub add shelf_static

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

dependencies:
  flutter_serial_communication: 0.1.0

4. 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:
  • Requires: none
  • Returns: Future<List<String>>

final _flutterSerialCommunicationPlugin = FlutterSerialCommunication();

List<String> newConnectedDevices = await _flutterSerialCommunicationPlugin.getAvailableDevices() ?? [];

• Connect:
  • Requires: index(int), baudRate(int)
  • Returns: Future<bool>

final _flutterSerialCommunicationPlugin = FlutterSerialCommunication();

int index = 0; // Index of List<String> from getAvailableDevices()
int baudRate = 0; // Your device's baud rate
bool isConnectionSuccess = await _flutterSerialCommunicationPlugin.connect(index, baudRate);

• Disconnect:
  • Requires: none
  • Returns: Future<void>

final _flutterSerialCommunicationPlugin = FlutterSerialCommunication();

await _flutterSerialCommunicationPlugin.disconnect();

• Write:
  • Requires: data(Uint8List)
  • Returns: Future<bool>

final _flutterSerialCommunicationPlugin = FlutterSerialCommunication();

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

• Read (Listener):
  • Requires: none
  • Returns: EventChannel

final _flutterSerialCommunicationPlugin = FlutterSerialCommunication();

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

• Device Connection Status (Listener):
  • Requires: none
  • Returns: EventChannel

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