Examples with GpioPinDigitalInput com.pi4j.io.gpio.GpioPinDigitalInput used on opensource projects

Example 1 with GpioPinDigitalInput

use of com.pi4j.io.gpio.GpioPinDigitalInput in project openhab1-addons by openhab.

the class MCP23017Binding method bindGpioPin.

private void bindGpioPin(MCP23017BindingProvider provider, String itemName) {
    try {
        int address = provider.getBusAddress(itemName);
        MCP23017GpioProvider mcp = mcpProviders.get(address);
        if (mcp == null) {
            try {
                mcp = new MCP23017GpioProvider(I2CBus.BUS_1, address);
                mcp.setPollingTime(pollingInterval);
            } catch (UnsupportedBusNumberException ex) {
                throw new IllegalArgumentException("Tried to access not available I2C bus");
            }
            mcpProviders.put(address, mcp);
        }
        Pin pin = provider.getPin(itemName);
        PinMode mode = provider.getPinMode(itemName);
        if (mode.equals(PinMode.DIGITAL_OUTPUT)) {
            GpioPinDigitalOutput output = gpio.provisionDigitalOutputPin(mcp, pin, itemName, provider.getDefaultState(itemName));
            gpioPins.put(itemName, output);
            logger.debug("Provisioned digital output for {}", itemName);
        } else if (mode.equals(PinMode.DIGITAL_INPUT)) {
            GpioPinDigitalInput input = gpio.provisionDigitalInputPin(mcp, pin, itemName, PinPullResistance.OFF);
            input.setDebounce(20);
            input.addListener(this);
            gpioPins.put(itemName, input);
            logger.debug("Provisioned digital input for {}", itemName);
        } else {
            throw new IllegalArgumentException("Invalid Pin Mode in config " + mode.name());
        }
    } catch (IOException exception) {
        logger.error("I/O error {}", exception.getMessage());
    }
}

Example 2 with GpioPinDigitalInput

use of com.pi4j.io.gpio.GpioPinDigitalInput in project SmartApplianceEnabler by camueller.

the class S0ElectricityMeter method start.

public void start() {
    pulseElectricityMeter.setImpulsesPerKwh(impulsesPerKwh);
    pulseElectricityMeter.setMeasurementInterval(measurementInterval);
    pulseElectricityMeter.setPowerOnAlways(powerOnAlways);
    if (getGpioController() != null) {
        final GpioPinDigitalInput input = getGpioController().provisionDigitalInputPin(getGpio(), getPinPullResistance());
        input.addListener(new GpioPinListenerDigital() {

            @Override
            public void handleGpioPinDigitalStateChangeEvent(GpioPinDigitalStateChangeEvent event) {
                logger.debug("GPIO " + event.getPin() + " changed to " + event.getState());
                if (event.getState() == PinState.HIGH) {
                    pulseElectricityMeter.addTimestampAndMaintain(System.currentTimeMillis());
                }
            }
        });
        logger.info("Start metering using " + getGpio());
    } else {
        logGpioAccessDisabled(logger);
    }
}