get characteristics

getledchar.dart

  bool _getLEDChar(List<BluetoothService> services) {
    for (BluetoothService s in services) {
      if (s.uuid.toString() == _myService) {
        var characteristics = s.characteristics;
        for (BluetoothCharacteristic c in characteristics) {
          if (c.uuid.toString() == _myChar) {
            _ledChar = c;
            return true;
          }
        }
      }
    }
    return false;
  }