Reading GPIO

        getApplicationContext().bindService(new Intent(this, MetaWearBleService.class),this, Context.BIND_AUTO_CREATE);
        MWConnect = (Button)findViewById(R.id.buttonConnect);
        MWDisConnect = (Button)findViewById(R.id.buttonDisconnect);
        MWConnect.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mwCtrllr.connect();
                GPIO gpioCtrllr = (GPIO) mwCtrllr.getModuleController(Module.GPIO);
                mwCtrllr.addModuleCallback(new GPIO.Callbacks() {
                    @Override
                    public void receivedAnalogInputAsAbsValue(byte pin, short value) {
                        Log.v("ExampleActivity", String.format(Locale.US, "pin= %d, Analog Abs Ref= %dmV",
                                pin, value));
                    }
                    @Override
                    public void receivedAnalogInputAsSupplyRatio(byte pin, short value) {
                        Log.v("ExampleActivity", String.format(Locale.US, "pin= %d, Analog Supply Ratio= %d",
                                pin, value));
                    }
                });
                gpioCtrllr.readAnalogInput((byte) 0, GPIO.AnalogMode.SUPPLY_RATIO);

                mwCtrllr.addModuleCallback(new GPIO.Callbacks() {
                    @Override
                    public void receivedDigitalInput(byte pin, byte value) {
                        Log.i("ExampleActivity", String.format(Locale.US, "pin= %d, Digital In Value= %d",
                                pin, value));
                    }
                });
                gpioCtrllr.readDigitalInput((byte) 0);
            }
        });
        MWDisConnect.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mwCtrllr.close(true);
            }
        });
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        getApplicationContext().unbindService(this);
    }

    @Override
    public void onServiceConnected(ComponentName name, IBinder service) {
        mwService= ((MetaWearBleService.LocalBinder) service).getService();
        final BluetoothManager btManager=
                (BluetoothManager) getSystemService(Context.BLUETOOTH_SERVICE);
        final BluetoothDevice mwBoard= BluetoothAdapter.getDefaultAdapter().getRemoteDevice(MW_MAC_ADDRESS);
        mwCtrllr= mwService.getMetaWearController(mwBoard);
    }