ethanliew / flutter_blue Goto Github PK

FlutterBlue flutterBlue = FlutterBlue.instance;

/// Start scanning
var scanSubscription = flutterBlue.scan().listen((scanResult) {
    // do something with scan result
});

/// Stop scanning
scanSubscription.cancel();

/// Create a connection to the device
var deviceConnection = flutterBlue.connect(device).listen((s) {
    if(s == BluetoothDeviceState.connected) {
        // device is connected, do something
    }
});

/// Disconnect from device
deviceConnection.cancel();

List<BluetoothService> services = await device.discoverServices();
services.forEach((service) {
    // do something with service
});

// Reads all characteristics
var characteristics = service.characteristics;
for(BluetoothCharacteristic c in characteristics) {
    List<int> value = await device.readCharacteristic(c);
    print(value);
}

// Writes to a characteristic
await device.writeCharacteristic(c, [0x12, 0x34])

// Reads all descriptors
var descriptors = characteristic.descriptors;
for(BluetoothDescriptor d in descriptors) {
    List<int> value = await device.readDescriptor(d);
    print(value);
}

// Writes to a descriptor
await device.writeDescriptor(d, [0x12, 0x34])

await device.setNotifyValue(characteristic, true);
device.onValueChanged(characteristic).listen((value) {
    // do something with new value
});