_handleMachinePress = async machine => {
  try {
    this.setState({ loading: true });
    await ble.connectionManager.connectToMachine(machine);
    const passProps = { ...props };
    navigateToScreen(ConnectedToMachineScreen, passProps);
  } catch (error) {
    console.warn(error);
  } finally {
    this.setState({ loading: false });
  }
}


export const connectToMachine = async machine => {
  return new Promise(async (resolve, reject) => {
    let connectedDevice;
    try {
      connectedDevice = await ble.connectToDevice(machine.id, { timeout: 10000, autoConnect: true });
    } catch (error) {
      try {
        await timeout(5000);
        connectedDevice = await ble.connectToDevice(machine.id, { timeout: 10000 });
      } catch (error) {
        reject(error);
        return;
      }
    }
    try {
      const exploredDevice = await connectedDevice.discoverAllServicesAndCharacteristics();
      await exploredDevice.services();
      resolve();
    } catch (error) {
      reject(error);
    }
  });
};