BITalino

Open source Flutter plugin that integrates the communication with BITalino devices. Made by Afonso Raposo.

See the an example app here.

Tested with BITalino Core BT (MCU+BT+PWR) and BITalino Core BLE/BT.

Work flow scheme

Currently supporting:

This plugin uses the available native APIs available at https://bitalino.com/en/development/apis.

Plaftorm Supported Native Repository Date
Android ✅ revolution-android-api Jul 16, 2020
IOS ✅ BITalinoBLE-iOS Jun 22, 2016

Installation

Add this plugin to the pubspec.yaml file:

dependencies:
  flutter:
    sdk: flutter
  bitalino: ^1.1.1 // add bitalino plugin

Android

On Android, you must set the minSdkVersion to 18 (or higher) in your android/app/build.gradle file.

minSdkVersion 18

IOS

On IOS, you have to add the following lines to the bottom of the /ios/Runner/Info.plist file:

<key>NSBluetoothAlwaysUsageDescription</key>
<string>This application needs access to bluetooth to communicate with BITalino device</string>

<key>NSBluetoothPeripheralUsageDescription</key>
<string>This application needs access to BLE to communicate with BITalino device</string>

Examples

Initialize controller

Android

On Android, the user must provide the device MAC address and can choose between BTH or BLE for communication protocols. If available, BTH is advised.

BITalinoController bitalinoController = BITalinoController(
  "20:16:07:18:17:02",
  CommunicationType.BTH,
);

try {
  await bitalinoController.initialize();
} on PlatformException catch (Exception) {
  print("Initialization failed: ${Exception.message}");
}

IOS

On IOS, the user must provide the device UUID and can only use BLE regarding communication protocol.

The UUID can be found with this application: Bluetooth Smart Scanner .

On IOS, there is no frame identifier.

BITalinoController bitalinoController = BITalinoController(
  "03A1C0AB-018F-5B39-9567-471DDE5B0322",
  CommunicationType.BLE,
);

try {
  await bitalinoController.initialize(
    
  );
} on PlatformException catch (Exception) {
  print("Initialization failed: ${Exception.message}");
}

Connect to device

Connect to a device by providing its address.

await bitalinoController.connect(
  onConnectionLost: () {
    print("Connection lost");
  },
)

Start acquisition

Start acquiring analog channels: A0, A2, A4, and A5, with a Sampling Rate of 10Hz. onDataAvailable is called everytime the application receives data during recording.

bool success = await bitalinoController.start(
  [0, 2, 4, 5],
  Frequency.HZ10,
  onDataAvailable: (BITalinoFrame frame) {
      print(frame.sequence);    // [int]
      print(frame.analog);      // [List<int>]
      print(frame.digital);     // [List<int>]
    },),
);

During acquisiton, the onDataAvailable callback is called.

Stop acquisition

bool success = await bitalinoController.stop();

Get the device state

Android

BITalinoState state = await bitalinoController.state();
print(state.identifier);        // [String]
print(state.battery);           // [int]
print(state.batteryThreshold);  // [int]
print(state.analog);            // [List<int>]
print(state.digital);           // [List<int>]

IOS

This method is not available for IOS.

Disconnect from device

bool success = await bitalinoController.disconnect();

Dispose controller

When you're done using the controller, dispose it.

bool success = await bitalinoController.dispose();

More

You can find all the information regarding this plugin on the API reference page.


Future

If you have any suggestion or problem, let me know and I'll try to improve or fix it. Also, feel free to contribute to this project! :)

License

GNU General Public License v3.0, see the LICENSE.md file for details.

Libraries

bitalino