private GpioPinListenerAnalog analogAdapter() {
	return new GpioPinListenerAnalog() {
		@Override
		public void handleGpioPinAnalogValueChangeEvent(
				GpioPinAnalogValueChangeEvent event) {
			if (event.getEventType() == ANALOG_VALUE_CHANGE) {
				fireStateChanged(analogPinValueChanged(analogPin(event.getPin().getPin().getAddress()), (int) event.getValue()));
			}
		}
	};
}
 

@Override
public void handleGpioPinAnalogValueChangeEvent(GpioPinAnalogValueChangeEvent event) {
	if(event.getEventType() == PinEventType.ANALOG_VALUE_CHANGE) {
		int[] message = protocolParser.analogRead(pin, (int)event.getValue());
		
		connectionContact.parseInput(CONNECTION_NAME, message.length, message);
	}
}
 

public static void main(String args[]) throws InterruptedException, IOException {
    
    System.out.println("<--Pi4J--> ADS1115 GPIO Example ... started.");

    // number formatters
    final DecimalFormat df = new DecimalFormat("#.##");
    final DecimalFormat pdf = new DecimalFormat("###.#");
    
    // create gpio controller
    final GpioController gpio = GpioFactory.getInstance();
    
    // create custom ADS1115 GPIO provider
    final ADS1115GpioProvider gpioProvider = new ADS1115GpioProvider(I2CBus.BUS_1, ADS1115GpioProvider.ADS1115_ADDRESS_0x48);
    
    // provision gpio analog input pins from ADS1115
    GpioPinAnalogInput myInputs[] = {
            gpio.provisionAnalogInputPin(gpioProvider, ADS1115Pin.INPUT_A0, "MyAnalogInput-A0"),
            gpio.provisionAnalogInputPin(gpioProvider, ADS1115Pin.INPUT_A1, "MyAnalogInput-A1"),
            gpio.provisionAnalogInputPin(gpioProvider, ADS1115Pin.INPUT_A2, "MyAnalogInput-A2"),
            gpio.provisionAnalogInputPin(gpioProvider, ADS1115Pin.INPUT_A3, "MyAnalogInput-A3"),
        };
    
    // ATTENTION !!          
    // It is important to set the PGA (Programmable Gain Amplifier) for all analog input pins. 
    // (You can optionally set each input to a different value)    
    // You measured input voltage should never exceed this value!
    //
    // In my testing, I am using a Sharp IR Distance Sensor (GP2Y0A21YK0F) whose voltage never exceeds 3.3 VDC
    // (http://www.adafruit.com/products/164)
    //
    // PGA value PGA_4_096V is a 1:1 scaled input, 
    // so the output values are in direct proportion to the detected voltage on the input pins
    gpioProvider.setProgrammableGainAmplifier(ProgrammableGainAmplifierValue.PGA_4_096V, ADS1115Pin.ALL);
            
    
    // Define a threshold value for each pin for analog value change events to be raised.
    // It is important to set this threshold high enough so that you don't overwhelm your program with change events for insignificant changes
    gpioProvider.setEventThreshold(500, ADS1115Pin.ALL);

    
    // Define the monitoring thread refresh interval (in milliseconds).
    // This governs the rate at which the monitoring thread will read input values from the ADC chip
    // (a value less than 50 ms is not permitted)
    gpioProvider.setMonitorInterval(100);
    
    
    // create analog pin value change listener
    GpioPinListenerAnalog listener = new GpioPinListenerAnalog()
    {
        @Override
        public void handleGpioPinAnalogValueChangeEvent(GpioPinAnalogValueChangeEvent event)
        {
            // RAW value
            double value = event.getValue();

            // percentage
            double percent =  ((value * 100) / ADS1115GpioProvider.ADS1115_RANGE_MAX_VALUE);
            
            // approximate voltage ( *scaled based on PGA setting )
            double voltage = gpioProvider.getProgrammableGainAmplifier(event.getPin()).getVoltage() * (percent/100);

            // display output
            System.out.print("\r (" + event.getPin().getName() +") : VOLTS=" + df.format(voltage) + "  | PERCENT=" + pdf.format(percent) + "% | RAW=" + value + "       ");
        }
    };
    
    myInputs[0].addListener(listener);
    myInputs[1].addListener(listener);
    myInputs[2].addListener(listener);
    myInputs[3].addListener(listener);
    
    // keep program running for 10 minutes 
    for (int count = 0; count < 600; count++) {

        // display output
        //System.out.print("\r ANALOG VALUE (FOR INPUT A0) : VOLTS=" + df.format(voltage) + "  | PERCENT=" + pdf.format(percent) + "% | RAW=" + value + "       ");
        Thread.sleep(1000);
    }
    
    // stop all GPIO activity/threads by shutting down the GPIO controller
    // (this method will forcefully shutdown all GPIO monitoring threads and scheduled tasks)
    gpio.shutdown();
    System.out.print("");
    System.out.print("");
}
 

public static void main(String args[]) throws InterruptedException, IOException {
    
    System.out.println("<--Pi4J--> ADS1015 GPIO Example ... started.");

    // number formatters
    final DecimalFormat df = new DecimalFormat("#.##");
    final DecimalFormat pdf = new DecimalFormat("###.#");
    
    // create gpio controller
    final GpioController gpio = GpioFactory.getInstance();
    
    // create custom ADS1015 GPIO provider
    final ADS1015GpioProvider gpioProvider = new ADS1015GpioProvider(I2CBus.BUS_1, ADS1015GpioProvider.ADS1015_ADDRESS_0x48);
    
    // provision gpio analog input pins from ADS1015
    GpioPinAnalogInput myInputs[] = {
            gpio.provisionAnalogInputPin(gpioProvider, ADS1015Pin.INPUT_A0, "MyAnalogInput-A0"),
            gpio.provisionAnalogInputPin(gpioProvider, ADS1015Pin.INPUT_A1, "MyAnalogInput-A1"),
            gpio.provisionAnalogInputPin(gpioProvider, ADS1015Pin.INPUT_A2, "MyAnalogInput-A2"),
            gpio.provisionAnalogInputPin(gpioProvider, ADS1015Pin.INPUT_A3, "MyAnalogInput-A3"),
        };
    
    // ATTENTION !!          
    // It is important to set the PGA (Programmable Gain Amplifier) for all analog input pins. 
    // (You can optionally set each input to a different value)    
    // You measured input voltage should never exceed this value!
    //
    // In my testing, I am using a Sharp IR Distance Sensor (GP2Y0A21YK0F) whose voltage never exceeds 3.3 VDC
    // (http://www.adafruit.com/products/164)
    //
    // PGA value PGA_4_096V is a 1:1 scaled input, 
    // so the output values are in direct proportion to the detected voltage on the input pins
    gpioProvider.setProgrammableGainAmplifier(ProgrammableGainAmplifierValue.PGA_4_096V, ADS1015Pin.ALL);
            
    
    // Define a threshold value for each pin for analog value change events to be raised.
    // It is important to set this threshold high enough so that you don't overwhelm your program with change events for insignificant changes
    gpioProvider.setEventThreshold(500, ADS1015Pin.ALL);

    
    // Define the monitoring thread refresh interval (in milliseconds).
    // This governs the rate at which the monitoring thread will read input values from the ADC chip
    // (a value less than 50 ms is not permitted)
    gpioProvider.setMonitorInterval(100);
    
    
    // create analog pin value change listener
    GpioPinListenerAnalog listener = new GpioPinListenerAnalog()
    {
        @Override
        public void handleGpioPinAnalogValueChangeEvent(GpioPinAnalogValueChangeEvent event)
        {
            // RAW value
            double value = event.getValue();

            // percentage
            double percent =  ((value * 100) / ADS1015GpioProvider.ADS1015_RANGE_MAX_VALUE);
            
            // approximate voltage ( *scaled based on PGA setting )
            double voltage = gpioProvider.getProgrammableGainAmplifier(event.getPin()).getVoltage() * (percent/100);

            // display output
            System.out.print("\r (" + event.getPin().getName() +") : VOLTS=" + df.format(voltage) + "  | PERCENT=" + pdf.format(percent) + "% | RAW=" + value + "       ");
        }
    };
    
    myInputs[0].addListener(listener);
    myInputs[1].addListener(listener);
    myInputs[2].addListener(listener);
    myInputs[3].addListener(listener);
    
    // keep program running for 10 minutes 
    for (int count = 0; count < 600; count++) {

        // display output
        //System.out.print("\r ANALOG VALUE (FOR INPUT A0) : VOLTS=" + df.format(voltage) + "  | PERCENT=" + pdf.format(percent) + "% | RAW=" + value + "       ");
        Thread.sleep(1000);
    }
    
    // stop all GPIO activity/threads by shutting down the GPIO controller
    // (this method will forcefully shutdown all GPIO monitoring threads and scheduled tasks)
    gpio.shutdown();
    System.out.print("");
    System.out.print("");
}