Java I2CBus.BUS_1属性代码示例

/**
 * Creates new form MainWindow
 *
 * @throws com.pi4j.io.i2c.I2CFactory.UnsupportedBusNumberException
 * @throws java.io.IOException
 */
public PumpDiagGuiSingle() throws I2CFactory.UnsupportedBusNumberException, IOException, IOException, InterruptedException {
    gpio = GpioFactory.getInstance(); // Singleton instance
    mcpProvider = new MCP23017GpioProvider(I2CBus.BUS_1, 0x23);

    // Provision direction control pins as outputs
    System.out.println("Provisioning direction pin");
    dir = gpio.provisionDigitalOutputPin(mcpProvider, MCP23017Pin.GPIO_A7, "Direction", PinState.LOW);

    // Provision step control pins as outputs
    System.out.println("Provisioning step pin");
    step = gpio.provisionDigitalOutputPin(mcpProvider, MCP23017Pin.GPIO_A6, "Step", PinState.LOW);

    // Provision enable pins as outputs. 
    // Note that the pin state "high" means the pump is disabled;
    // the enable pump on the chip is inverted.
    System.out.println("Provisioning enable pin");
    enable = gpio.provisionDigitalOutputPin(mcpProvider, MCP23017Pin.GPIO_A5, "~Enable", PinState.HIGH);
}
 

public static void main(String args[]) throws Exception {
    System.out.println("<--Pi4J--> MCP4725 DAC Example ... started.");
    // create gpio controller
    final GpioController gpio = GpioFactory.getInstance();

    // create gpio provider
    final MCP4725GpioProvider gpioProvider = new MCP4725GpioProvider(I2CBus.BUS_1, MCP4725GpioProvider.MCP4725_ADDRESS_1);

    // create output pin
    final GpioPinAnalogOutput vout = gpio.provisionAnalogOutputPin(gpioProvider, MCP4725Pin.OUTPUT);

    // generate sinus wave on output pin
    for (int i = 0; i < 360; i++) {
        double y = Math.sin(Math.toRadians(i));
        y = y / 2 + 0.5;
        vout.setValue(y);
        if (i == 359) {
            i = 0;
        }
    }
}
 

public static void main(String args[]) throws InterruptedException, UnsupportedBusNumberException, IOException {

        System.out.println("<--Pi4J--> MCP3424 GPIO Example ... started.");

        // create gpio controller
        final GpioController gpio = GpioFactory.getInstance();

        // create custom MCP3424 GPIO provider
        final MCP3424GpioProvider provider = new MCP3424GpioProvider(I2CBus.BUS_1, 0x6C, 18, 1);

        // provision gpio input pins from MCP3424
        GpioPinAnalogInput inputs[] = { gpio.provisionAnalogInputPin(provider, MCP3424Pin.GPIO_CH0, "Channel-0"),
                gpio.provisionAnalogInputPin(provider, MCP3424Pin.GPIO_CH1, "Channel-1"),
                gpio.provisionAnalogInputPin(provider, MCP3424Pin.GPIO_CH2, "Channel-2"),
                gpio.provisionAnalogInputPin(provider, MCP3424Pin.GPIO_CH3, "Channel-3") };

        // Keep this sample program running for 10 minutes
        for (int count = 0; count < 600; count++) {
            StringBuilder sb  = new StringBuilder();

            // Print current analog input conversion values from each input channel
            for(GpioPinAnalogInput input : inputs){
                double analog = provider.getAnalogValue(input.getPin());
                sb.append(" \t[" + input.getValue() + " -> " + analog + " V] ");
            }

            // Print out all analog input conversion values
            System.out.println("<MCP3424 VALUES> " + sb.toString());

            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.println("<--Pi4J--> Exiting MCP3424 GPIO Example.");
    }
 

public McpOutputController(int addr) {

        // Basic required setup
        this.gpioCtrl = GpioFactory.getInstance();
        try {
            this.provider = new MCP23017GpioProvider(I2CBus.BUS_1, addr);
        } catch (I2CFactory.UnsupportedBusNumberException | IOException ex) {
            Logger.getLogger(McpOutputController.class.getName()).log(Level.SEVERE, null, ex);
        }

        // Initialize all pins to output
        this.initPins();
    }
 

public GpioProvider getMCP23017Provider(int address) {
try {
    return new MCP23017GpioProvider(newRasPI() ? I2CBus.BUS_1 : I2CBus.BUS_0, address);
} catch (IOException | UnsatisfiedLinkError e) {
    LOG.error("Unable to locate MCP23017 at address " + String.format("0x%x", address) + ", using default provider instead.", e);
    return gpio().getDefaultProvider();
}
   }
 

public static void main(String args[]) throws InterruptedException, UnsupportedBusNumberException, IOException {

        System.out.println("<--Pi4J--> MCP3424 GPIO Example ... started.");

        // create gpio controller
        final GpioController gpio = GpioFactory.getInstance();

        // create custom MCP3424 GPIO provider
        final MCP3424GpioProvider provider = new MCP3424GpioProvider(I2CBus.BUS_1, 0x6C, 18, 1);

        // provision gpio input pins from MCP3424
        GpioPinAnalogInput inputs[] = { gpio.provisionAnalogInputPin(provider, MCP3424Pin.GPIO_CH0, "Channel-0"),
                gpio.provisionAnalogInputPin(provider, MCP3424Pin.GPIO_CH1, "Channel-1"),
                gpio.provisionAnalogInputPin(provider, MCP3424Pin.GPIO_CH2, "Channel-2"),
                gpio.provisionAnalogInputPin(provider, MCP3424Pin.GPIO_CH3, "Channel-3") };

        // Define the amount that the ADC input conversion value must change before
        // a 'GpioPinAnalogValueChangeEvent' is raised.  This is used to prevent unnecessary
        // event dispatching for an analog input that may have an acceptable or expected
        // range of value drift.
        provider.setEventThreshold(0, inputs); // all inputs; alternatively you can set thresholds on each input discretely

        // Print current analog input conversion values from each input channel
        for(GpioPinAnalogInput input : inputs){
            System.out.print("<INITIAL VALUE> [" + input.getName() + "] : RAW VALUE = " + input.getValue());
            System.out.println(" -> " + provider.getAnalogValue(input.getPin()) + " V");
        }

        // create and register gpio pin listener
        gpio.addListener(new GpioPinListenerAnalog() {
            @Override
            public void handleGpioPinAnalogValueChangeEvent(GpioPinAnalogValueChangeEvent event) {
            	// get pin
            	GpioPin pin = event.getPin();

            	// get RAW value
                double value = event.getValue();

            	// get Volt value
                double analog = provider.getAnalogValue(pin.getPin());

                // display output
                System.out.print("<CHANGED VALUE> [" + pin + "] : RAW VALUE = " + value);
                System.out.println(" -> " + analog + " V");
            }
        }, inputs);

        provider.setMonitorInterval(50);
        provider.setMonitorEnabled(true);

        // Keep this sample program running for 10 minutes
        for (int count = 0; count < 600; count++) {
            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.println("<--Pi4J--> Exiting MCP3424 GPIO Example.");
    }
 

public static void main(String args[]) throws InterruptedException, UnsupportedBusNumberException, 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.println(" (" + 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
        Thread.sleep(600000);

        // 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.println("Exiting ADS1115GpioExample");
    }
 

public static void main(String args[]) throws Exception {
        System.out.println("<--Pi4J--> MCP4725 DAC Example ... started.");
        // create gpio controller
        final GpioController gpio = GpioFactory.getInstance();

        // create gpio provider
        final DacGpioProvider provider = new MCP4725GpioProvider(
                I2CBus.BUS_1,                          // I2C BUS 1 on newer Raspberry Pi's
                MCP4725GpioProvider.MCP4725_ADDRESS_1  // default address
        );

        // create output pin
        final GpioPinAnalogOutput output = gpio.provisionAnalogOutputPin(provider, MCP4725Pin.OUTPUT);

        // set a startup value for the output pin
        output.setValue(0);

        // set a shutdown value for the output pin
        provider.setShutdownValue(MCP4725GpioProvider.MAX_VALUE, output);

        // generate sinus wave on output pin
        for (int i = 0; i < 360; i++) {
            double y = Math.sin(Math.toRadians(i));
            y = (y / 2 + 0.5) * 100;

            // assign a percentage value instead of raw value
            // (we have to use a helper method within the provider instead of directly on the pin instance)
            provider.setPercentValue(output, y);

            // rollover
            if (i == 359) { i = 0; }
        }

        // generate a square wave on output pin
//        for(int i = 0; i < 100000; i++) {
//            output.setValue(gpioProvider.getMaxSupportedValue());
//            Thread.sleep(2);
//            output.setValue(gpioProvider.getMinSupportedValue());
//            Thread.sleep(2);
//        }

        // When your program is finished, make sure to stop all GPIO activity/threads by shutting
        // down the GPIO controller (this method will forcefully shutdown all GPIO monitoring threads
        // and background scheduled tasks)
        gpio.shutdown();

        System.out.println("Exiting MCP4725GpioExample");
    }
 

public static void main(String args[]) throws InterruptedException, UnsupportedBusNumberException, IOException {

        System.out.println("<--Pi4J--> MCP23017 GPIO Example ... started.");

        // create gpio controller
        final GpioController gpio = GpioFactory.getInstance();

        // create custom MCP23017 GPIO provider
        final MCP23017GpioProvider provider = new MCP23017GpioProvider(I2CBus.BUS_1, 0x21);

        // provision gpio input pins from MCP23017
        GpioPinDigitalInput myInputs[] = {
                gpio.provisionDigitalInputPin(provider, MCP23017Pin.GPIO_A0, "MyInput-A0", PinPullResistance.PULL_UP),
                gpio.provisionDigitalInputPin(provider, MCP23017Pin.GPIO_A1, "MyInput-A1", PinPullResistance.PULL_UP),
                gpio.provisionDigitalInputPin(provider, MCP23017Pin.GPIO_A2, "MyInput-A2", PinPullResistance.PULL_UP),
                gpio.provisionDigitalInputPin(provider, MCP23017Pin.GPIO_A3, "MyInput-A3", PinPullResistance.PULL_UP),
                gpio.provisionDigitalInputPin(provider, MCP23017Pin.GPIO_A4, "MyInput-A4", PinPullResistance.PULL_UP),
                gpio.provisionDigitalInputPin(provider, MCP23017Pin.GPIO_A5, "MyInput-A5", PinPullResistance.PULL_UP),
                gpio.provisionDigitalInputPin(provider, MCP23017Pin.GPIO_A6, "MyInput-A6", PinPullResistance.PULL_UP),
                gpio.provisionDigitalInputPin(provider, MCP23017Pin.GPIO_A7, "MyInput-A7", PinPullResistance.PULL_UP),
            };

        // create and register gpio pin listener
        gpio.addListener(new GpioPinListenerDigital() {
            @Override
            public void handleGpioPinDigitalStateChangeEvent(GpioPinDigitalStateChangeEvent event) {
                // display pin state on console
                System.out.println(" --> GPIO PIN STATE CHANGE: " + event.getPin() + " = "
                        + event.getState());
            }
        }, myInputs);

        // provision gpio output pins and make sure they are all LOW at startup
        GpioPinDigitalOutput myOutputs[] = {
            gpio.provisionDigitalOutputPin(provider, MCP23017Pin.GPIO_B0, "MyOutput-B0", PinState.LOW),
            gpio.provisionDigitalOutputPin(provider, MCP23017Pin.GPIO_B1, "MyOutput-B1", PinState.LOW),
            gpio.provisionDigitalOutputPin(provider, MCP23017Pin.GPIO_B2, "MyOutput-B2", PinState.LOW),
            gpio.provisionDigitalOutputPin(provider, MCP23017Pin.GPIO_B3, "MyOutput-B3", PinState.LOW),
            gpio.provisionDigitalOutputPin(provider, MCP23017Pin.GPIO_B4, "MyOutput-B4", PinState.LOW),
            gpio.provisionDigitalOutputPin(provider, MCP23017Pin.GPIO_B5, "MyOutput-B5", PinState.LOW),
            gpio.provisionDigitalOutputPin(provider, MCP23017Pin.GPIO_B6, "MyOutput-B6", PinState.LOW),
            gpio.provisionDigitalOutputPin(provider, MCP23017Pin.GPIO_B7, "MyOutput-B7", PinState.LOW)
          };

        // keep program running for 20 seconds
        for (int count = 0; count < 10; count++) {
            gpio.setState(true, myOutputs);
            Thread.sleep(1000);
            gpio.setState(false, myOutputs);
            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.println("Exiting MCP23017GpioExample");
    }
 

public static void main(String args[]) throws InterruptedException, UnsupportedBusNumberException, 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.println(" (" + 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
        Thread.sleep(600000);

        // 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.println("Exiting ADS1015GpioExample");
    }
 

public static void main(String args[]) throws InterruptedException, UnsupportedBusNumberException, IOException {

        System.out.println("<--Pi4J--> PCF8574 GPIO Example ... started.");

        // create gpio controller
        final GpioController gpio = GpioFactory.getInstance();

        // create custom MCP23017 GPIO provider
        final PCF8574GpioProvider provider = new PCF8574GpioProvider(I2CBus.BUS_1, PCF8574GpioProvider.PCF8574A_0x3F);

        // provision gpio input pins from MCP23017
        GpioPinDigitalInput myInputs[] = {
                gpio.provisionDigitalInputPin(provider, PCF8574Pin.GPIO_00),
                gpio.provisionDigitalInputPin(provider, PCF8574Pin.GPIO_01),
                gpio.provisionDigitalInputPin(provider, PCF8574Pin.GPIO_02)
            };

        // create and register gpio pin listener
        gpio.addListener(new GpioPinListenerDigital() {
            @Override
            public void handleGpioPinDigitalStateChangeEvent(GpioPinDigitalStateChangeEvent event) {
                // display pin state on console
                System.out.println(" --> GPIO PIN STATE CHANGE: " + event.getPin() + " = "
                        + event.getState());
            }
        }, myInputs);

        // provision gpio output pins and make sure they are all LOW at startup
        GpioPinDigitalOutput myOutputs[] = {
            gpio.provisionDigitalOutputPin(provider, PCF8574Pin.GPIO_04, PinState.LOW),
            gpio.provisionDigitalOutputPin(provider, PCF8574Pin.GPIO_05, PinState.LOW),
            gpio.provisionDigitalOutputPin(provider, PCF8574Pin.GPIO_06, PinState.LOW)
          };

        // on program shutdown, set the pins back to their default state: HIGH
        gpio.setShutdownOptions(true, PinState.HIGH, myOutputs);

        // keep program running for 20 seconds
        for (int count = 0; count < 10; count++) {
            gpio.setState(true, myOutputs);
            Thread.sleep(1000);
            gpio.setState(false, myOutputs);
            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.println("Exiting PCF8574GpioExample");
    }
 

public MCP23017_Control(int address) throws UnsupportedBusNumberException, IOException {
    this.gpio = GpioFactory.getInstance();
    this.provider = new MCP23017GpioProvider(I2CBus.BUS_1, address);
    
}
 

public static void main(String args[]) throws InterruptedException, UnsupportedBusNumberException, IOException {

        System.out.println("<--Pi4J--> MCP23017 GPIO Example ... started.");

        // create gpio controller
        final GpioController gpio = GpioFactory.getInstance();

        // create custom MCP23017 GPIO provider
        final MCP23017GpioProvider provider = new MCP23017GpioProvider(I2CBus.BUS_1, 0x20);
        
        
        
        

        // provision gpio input pins from MCP23017
        GpioPinDigitalInput myInputs[] = {
                gpio.provisionDigitalInputPin(provider, MCP23017Pin.GPIO_A0, "MyInput-A0", PinPullResistance.OFF),
                gpio.provisionDigitalInputPin(provider, MCP23017Pin.GPIO_A1, "MyInput-A1", PinPullResistance.OFF),
                gpio.provisionDigitalInputPin(provider, MCP23017Pin.GPIO_A2, "MyInput-A2", PinPullResistance.OFF),
                gpio.provisionDigitalInputPin(provider, MCP23017Pin.GPIO_A3, "MyInput-A3", PinPullResistance.OFF),
                gpio.provisionDigitalInputPin(provider, MCP23017Pin.GPIO_A4, "MyInput-A4", PinPullResistance.OFF),
                gpio.provisionDigitalInputPin(provider, MCP23017Pin.GPIO_A5, "MyInput-A5", PinPullResistance.OFF),
                gpio.provisionDigitalInputPin(provider, MCP23017Pin.GPIO_A6, "MyInput-A6", PinPullResistance.OFF),
                gpio.provisionDigitalInputPin(provider, MCP23017Pin.GPIO_A7, "MyInput-A7", PinPullResistance.OFF),
            };

        // create and register gpio pin listener
        gpio.addListener(new GpioPinListenerDigital() {
            @Override
            public void handleGpioPinDigitalStateChangeEvent(GpioPinDigitalStateChangeEvent event) {
                // display pin state on console
                System.out.println(" --> GPIO PIN STATE CHANGE: " + event.getPin() + " = "
                        + event.getState());
            }
        }, myInputs);

        // provision gpio output pins and make sure they are all LOW at startup
        GpioPinDigitalOutput myOutputs[] = {
            gpio.provisionDigitalOutputPin(provider, MCP23017Pin.GPIO_B0, "MyOutput-B0", PinState.LOW),
            gpio.provisionDigitalOutputPin(provider, MCP23017Pin.GPIO_B1, "MyOutput-B1", PinState.LOW),
            gpio.provisionDigitalOutputPin(provider, MCP23017Pin.GPIO_B2, "MyOutput-B2", PinState.LOW),
            gpio.provisionDigitalOutputPin(provider, MCP23017Pin.GPIO_B3, "MyOutput-B3", PinState.LOW),
            gpio.provisionDigitalOutputPin(provider, MCP23017Pin.GPIO_B4, "MyOutput-B4", PinState.LOW),
            gpio.provisionDigitalOutputPin(provider, MCP23017Pin.GPIO_B5, "MyOutput-B5", PinState.LOW),
            gpio.provisionDigitalOutputPin(provider, MCP23017Pin.GPIO_B6, "MyOutput-B6", PinState.LOW),
            gpio.provisionDigitalOutputPin(provider, MCP23017Pin.GPIO_B7, "MyOutput-B7", PinState.LOW)
          };
        
        

        // keep program running for 20 seconds
        for (int count = 0; count < 1000; count++) {
            gpio.setState(true, myOutputs);
            Thread.sleep(1000);
            gpio.setState(false, myOutputs);
            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.println("Exiting MCP23017GpioExample");
    }
 

/**
 * Creates new form MainWindow
 * @throws com.pi4j.io.i2c.I2CFactory.UnsupportedBusNumberException
 * @throws java.io.IOException
 */
public PumpDiagGui() throws I2CFactory.UnsupportedBusNumberException, IOException, IOException {
    gpio = GpioFactory.getInstance(); // Singleton instance
    mcpProviderOne = new MCP23017GpioProvider(I2CBus.BUS_1, 0x27);
    //mcpProviderTwo = new MCP23017GpioProvider(I2CBus.BUS_1, 0x23);

    // Provision direction control pins as outputs
    GpioPinDigitalOutput dir1 = gpio.provisionDigitalOutputPin(mcpProviderOne, MCP23017Pin.GPIO_A7, "Pump 1 Direction", PinState.LOW);
    GpioPinDigitalOutput dir2 = gpio.provisionDigitalOutputPin(mcpProviderOne, MCP23017Pin.GPIO_B0, "Pump 2 Direction", PinState.LOW);
    GpioPinDigitalOutput dir3 = gpio.provisionDigitalOutputPin(mcpProviderOne, MCP23017Pin.GPIO_A4, "Pump 3 Direction", PinState.LOW);

    // Provision step control pins as outputs
    GpioPinDigitalOutput step1 = gpio.provisionDigitalOutputPin(mcpProviderOne, MCP23017Pin.GPIO_A6, "Pump 1 Step", PinState.LOW);
    GpioPinDigitalOutput step2 = gpio.provisionDigitalOutputPin(mcpProviderOne, MCP23017Pin.GPIO_B1, "Pump 2 Step", PinState.LOW);
    GpioPinDigitalOutput step3 = gpio.provisionDigitalOutputPin(mcpProviderOne, MCP23017Pin.GPIO_A3, "Pump 3 Step", PinState.LOW);

    // Provision enable pins as outputs. 
    // Note that the pin state "high" means the pump is disabled;
    // the enable pump on the chip is inverted.
    GpioPinDigitalOutput enable1 = gpio.provisionDigitalOutputPin(mcpProviderOne, MCP23017Pin.GPIO_A5, "Pump 1 ~Enable", PinState.HIGH);
    GpioPinDigitalOutput enable2 = gpio.provisionDigitalOutputPin(mcpProviderOne, MCP23017Pin.GPIO_B7, "Pump 2 ~Enable", PinState.HIGH);
    GpioPinDigitalOutput enable3 = gpio.provisionDigitalOutputPin(mcpProviderOne, MCP23017Pin.GPIO_A2, "Pump 3 ~Enable", PinState.HIGH);

    // Provision end-stop pins as inputs. 
    // These pins tell the pump when the syringe
    // is in its MINIMUM possible position (empty).
    GpioPinDigitalInput min1 = gpio.provisionDigitalInputPin(RaspiPin.GPIO_07, "Pump 1 Min (BCM 4)", PinPullResistance.PULL_UP);
    GpioPinDigitalInput min2 = gpio.provisionDigitalInputPin(RaspiPin.GPIO_00, "Pump 2 Min (BCM 17)", PinPullResistance.PULL_UP);
    GpioPinDigitalInput min3 = gpio.provisionDigitalInputPin(RaspiPin.GPIO_02, "Pump 3 Min (BCM 27)", PinPullResistance.PULL_UP);

    // Provision end-stop pins as inputs.
    // These pins tell the pump when the syringe
    // is in its MAXIMUM possible position (full).
    GpioPinDigitalInput max1 = gpio.provisionDigitalInputPin(RaspiPin.GPIO_27, "Pump 1 Max (BCM 16)", PinPullResistance.PULL_UP);
    GpioPinDigitalInput max2 = gpio.provisionDigitalInputPin(RaspiPin.GPIO_28, "Pump 2 Max (BCM 20)", PinPullResistance.PULL_UP);
    GpioPinDigitalInput max3 = gpio.provisionDigitalInputPin(RaspiPin.GPIO_29, "Pump 3 Max (BCM 21)", PinPullResistance.PULL_UP);

    pump1 = new SyringePump(step1, dir1, enable1, min1, max1);
    pump2 = new SyringePump(step2, dir2, enable2, min2, max2);
    pump3 = new SyringePump(step3, dir3, enable3, min3, max3);

    pump1.setStepDelay(1);
    pump2.setStepDelay(1);
    pump3.setStepDelay(1);
    
   
    
    initComponents();

}
 

public static void main(String args[]) throws InterruptedException, IOException {
    
    System.out.println("<--Pi4J--> MCP23017 GPIO Example ... started.");
    
    // create gpio controller
    final GpioController gpio = GpioFactory.getInstance();
    
    // create custom MCP23017 GPIO provider
    final MCP23017GpioProvider gpioProvider = new MCP23017GpioProvider(I2CBus.BUS_1, 0x21);
    
    // provision gpio input pins from MCP23017
    GpioPinDigitalInput myInputs[] = {
            gpio.provisionDigitalInputPin(gpioProvider, MCP23017Pin.GPIO_A0, "MyInput-A0", PinPullResistance.PULL_UP),
            gpio.provisionDigitalInputPin(gpioProvider, MCP23017Pin.GPIO_A1, "MyInput-A1", PinPullResistance.PULL_UP),
            gpio.provisionDigitalInputPin(gpioProvider, MCP23017Pin.GPIO_A2, "MyInput-A2", PinPullResistance.PULL_UP),
            gpio.provisionDigitalInputPin(gpioProvider, MCP23017Pin.GPIO_A3, "MyInput-A3", PinPullResistance.PULL_UP),
            gpio.provisionDigitalInputPin(gpioProvider, MCP23017Pin.GPIO_A4, "MyInput-A4", PinPullResistance.PULL_UP),
            gpio.provisionDigitalInputPin(gpioProvider, MCP23017Pin.GPIO_A5, "MyInput-A5", PinPullResistance.PULL_UP),
            gpio.provisionDigitalInputPin(gpioProvider, MCP23017Pin.GPIO_A6, "MyInput-A6", PinPullResistance.PULL_UP),
            gpio.provisionDigitalInputPin(gpioProvider, MCP23017Pin.GPIO_A7, "MyInput-A7", PinPullResistance.PULL_UP),
        };
    
    // create and register gpio pin listener
    gpio.addListener(new GpioPinListenerDigital() {
        @Override
        public void handleGpioPinDigitalStateChangeEvent(GpioPinDigitalStateChangeEvent event) {
            // display pin state on console
            System.out.println(" --> GPIO PIN STATE CHANGE: " + event.getPin() + " = "
                    + event.getState());
        }
    }, myInputs);
    
    // provision gpio output pins and make sure they are all LOW at startup
    GpioPinDigitalOutput myOutputs[] = { 
        gpio.provisionDigitalOutputPin(gpioProvider, MCP23017Pin.GPIO_B0, "MyOutput-B0", PinState.LOW),
        gpio.provisionDigitalOutputPin(gpioProvider, MCP23017Pin.GPIO_B1, "MyOutput-B1", PinState.LOW),
        gpio.provisionDigitalOutputPin(gpioProvider, MCP23017Pin.GPIO_B2, "MyOutput-B2", PinState.LOW),
        gpio.provisionDigitalOutputPin(gpioProvider, MCP23017Pin.GPIO_B3, "MyOutput-B3", PinState.LOW),
        gpio.provisionDigitalOutputPin(gpioProvider, MCP23017Pin.GPIO_B4, "MyOutput-B4", PinState.LOW),
        gpio.provisionDigitalOutputPin(gpioProvider, MCP23017Pin.GPIO_B5, "MyOutput-B5", PinState.LOW),
        gpio.provisionDigitalOutputPin(gpioProvider, MCP23017Pin.GPIO_B6, "MyOutput-B6", PinState.LOW),
        gpio.provisionDigitalOutputPin(gpioProvider, MCP23017Pin.GPIO_B7, "MyOutput-B7", PinState.LOW)
      };
    
    // keep program running for 20 seconds
    for (int count = 0; count < 10; count++) {
        gpio.setState(true, myOutputs);
        Thread.sleep(1000);
        gpio.setState(false, myOutputs);
        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();                 
}