Java - Humidity Bricklet¶

Simple¶

Download (ExampleSimple.java)

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import com.tinkerforge.IPConnection;
import com.tinkerforge.BrickletHumidity;

public class ExampleSimple {
    private static final String HOST = "localhost";
    private static final int PORT = 4223;

    // Change XYZ to the UID of your Humidity Bricklet
    private static final String UID = "XYZ";

    // Note: To make the example code cleaner we do not handle exceptions. Exceptions
    //       you might normally want to catch are described in the documentation
    public static void main(String args[]) throws Exception {
        IPConnection ipcon = new IPConnection(); // Create IP connection
        BrickletHumidity h = new BrickletHumidity(UID, ipcon); // Create device object

        ipcon.connect(HOST, PORT); // Connect to brickd
        // Don't use device before ipcon is connected

        // Get current humidity
        int humidity = h.getHumidity(); // Can throw com.tinkerforge.TimeoutException
        System.out.println("Humidity: " + humidity/10.0 + " %RH");

        System.out.println("Press key to exit"); System.in.read();
        ipcon.disconnect();
    }
}

Callback¶

Download (ExampleCallback.java)

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import com.tinkerforge.IPConnection;
import com.tinkerforge.BrickletHumidity;

public class ExampleCallback {
    private static final String HOST = "localhost";
    private static final int PORT = 4223;

    // Change XYZ to the UID of your Humidity Bricklet
    private static final String UID = "XYZ";

    // Note: To make the example code cleaner we do not handle exceptions. Exceptions
    //       you might normally want to catch are described in the documentation
    public static void main(String args[]) throws Exception {
        IPConnection ipcon = new IPConnection(); // Create IP connection
        BrickletHumidity h = new BrickletHumidity(UID, ipcon); // Create device object

        ipcon.connect(HOST, PORT); // Connect to brickd
        // Don't use device before ipcon is connected

        // Add humidity listener
        h.addHumidityListener(new BrickletHumidity.HumidityListener() {
            public void humidity(int humidity) {
                System.out.println("Humidity: " + humidity/10.0 + " %RH");
            }
        });

        // Set period for humidity callback to 1s (1000ms)
        // Note: The humidity callback is only called every second
        //       if the humidity has changed since the last call!
        h.setHumidityCallbackPeriod(1000);

        System.out.println("Press key to exit"); System.in.read();
        ipcon.disconnect();
    }
}

Threshold¶

Download (ExampleThreshold.java)

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import com.tinkerforge.IPConnection;
import com.tinkerforge.BrickletHumidity;

public class ExampleThreshold {
    private static final String HOST = "localhost";
    private static final int PORT = 4223;

    // Change XYZ to the UID of your Humidity Bricklet
    private static final String UID = "XYZ";

    // Note: To make the example code cleaner we do not handle exceptions. Exceptions
    //       you might normally want to catch are described in the documentation
    public static void main(String args[]) throws Exception {
        IPConnection ipcon = new IPConnection(); // Create IP connection
        BrickletHumidity h = new BrickletHumidity(UID, ipcon); // Create device object

        ipcon.connect(HOST, PORT); // Connect to brickd
        // Don't use device before ipcon is connected

        // Get threshold callbacks with a debounce time of 10 seconds (10000ms)
        h.setDebouncePeriod(10000);

        // Add humidity reached listener
        h.addHumidityReachedListener(new BrickletHumidity.HumidityReachedListener() {
            public void humidityReached(int humidity) {
                System.out.println("Humidity: " + humidity/10.0 + " %RH");
                System.out.println("Recommended humidity for human comfort is 30 to 60 %RH.");
            }
        });

        // Configure threshold for humidity "outside of 30 to 60 %RH"
        h.setHumidityCallbackThreshold('o', 30*10, 60*10);

        System.out.println("Press key to exit"); System.in.read();
        ipcon.disconnect();
    }
}

Basic Functions¶

class BrickletHumidity(String uid, IPConnection ipcon)¶

Parameters:	uid – Type: String ipcon – Type: IPConnection
Returns:	humidity – Type: BrickletHumidity

Creates an object with the unique device ID uid:

BrickletHumidity humidity = new BrickletHumidity("YOUR_DEVICE_UID", ipcon);

This object can then be used after the IP Connection is connected.

int BrickletHumidity.getHumidity()¶

Returns:	humidity – Type: int, Unit: 1/10 %, Range: [0 to 1000]

Returns the humidity of the sensor.

If you want to get the humidity periodically, it is recommended to use the HumidityListener listener and set the period with setHumidityCallbackPeriod().

Advanced Functions¶

int BrickletHumidity.getAnalogValue()¶

Returns:	value – Type: int, Range: [0 to 212 - 1]

Returns the value as read by a 12-bit analog-to-digital converter.

Note

The value returned by getHumidity() is averaged over several samples to yield less noise, while getAnalogValue() gives back raw unfiltered analog values. The returned humidity value is calibrated for room temperatures, if you use the sensor in extreme cold or extreme warm environments, you might want to calculate the humidity from the analog value yourself. See the HIH 5030 datasheet.

If you want the analog value periodically, it is recommended to use the AnalogValueListener listener and set the period with setAnalogValueCallbackPeriod().

BrickletHumidity.Identity BrickletHumidity.getIdentity()¶

Return Object:

uid – Type: String, Length: up to 8 connectedUid – Type: String, Length: up to 8 position – Type: char, Range: ['a' to 'h', 'z'] hardwareVersion – Type: short[], Length: 3 0: major – Type: short, Range: [0 to 255] 1: minor – Type: short, Range: [0 to 255] 2: revision – Type: short, Range: [0 to 255] firmwareVersion – Type: short[], Length: 3 0: major – Type: short, Range: [0 to 255] 1: minor – Type: short, Range: [0 to 255] 2: revision – Type: short, Range: [0 to 255] deviceIdentifier – Type: int, Range: [0 to 216 - 1]

Returns the UID, the UID where the Bricklet is connected to, the position, the hardware and firmware version as well as the device identifier.

The position can be 'a', 'b', 'c', 'd', 'e', 'f', 'g' or 'h' (Bricklet Port). A Bricklet connected to an Isolator Bricklet is always at position 'z'.

The device identifier numbers can be found here. There is also a constant for the device identifier of this Bricklet.

Listener Configuration Functions¶

void BrickletHumidity.setHumidityCallbackPeriod(long period)¶

Parameters:	period – Type: long, Unit: 1 ms, Range: [0 to 232 - 1], Default: 0

Sets the period with which the HumidityListener listener is triggered periodically. A value of 0 turns the listener off.

The HumidityListener listener is only triggered if the humidity has changed since the last triggering.

long BrickletHumidity.getHumidityCallbackPeriod()¶

Returns:	period – Type: long, Unit: 1 ms, Range: [0 to 232 - 1], Default: 0

Returns the period as set by setHumidityCallbackPeriod().

void BrickletHumidity.setAnalogValueCallbackPeriod(long period)¶

Parameters:	period – Type: long, Unit: 1 ms, Range: [0 to 232 - 1], Default: 0

Sets the period with which the AnalogValueListener listener is triggered periodically. A value of 0 turns the listener off.

The AnalogValueListener listener is only triggered if the analog value has changed since the last triggering.

long BrickletHumidity.getAnalogValueCallbackPeriod()¶

Returns:	period – Type: long, Unit: 1 ms, Range: [0 to 232 - 1], Default: 0

Returns the period as set by setAnalogValueCallbackPeriod().

void BrickletHumidity.setHumidityCallbackThreshold(char option, int min, int max)¶

Parameters:	option – Type: char, Range: See constants, Default: 'x' min – Type: int, Unit: 1/10 %, Range: [0 to 216 - 1], Default: 0 max – Type: int, Unit: 1/10 %, Range: [0 to 216 - 1], Default: 0

Sets the thresholds for the HumidityReachedListener listener.

The following options are possible:

Option	Description
'x'	Listener is turned off
'o'	Listener is triggered when the humidity is outside the min and max values
'i'	Listener is triggered when the humidity is inside the min and max values
'<'	Listener is triggered when the humidity is smaller than the min value (max is ignored)
'>'	Listener is triggered when the humidity is greater than the min value (max is ignored)

The following constants are available for this function:

For option:

• BrickletHumidity.THRESHOLD_OPTION_OFF = 'x'
• BrickletHumidity.THRESHOLD_OPTION_OUTSIDE = 'o'
• BrickletHumidity.THRESHOLD_OPTION_INSIDE = 'i'
• BrickletHumidity.THRESHOLD_OPTION_SMALLER = '<'
• BrickletHumidity.THRESHOLD_OPTION_GREATER = '>'

BrickletHumidity.HumidityCallbackThreshold BrickletHumidity.getHumidityCallbackThreshold()¶

Return Object:	option – Type: char, Range: See constants, Default: 'x' min – Type: int, Unit: 1/10 %, Range: [0 to 216 - 1], Default: 0 max – Type: int, Unit: 1/10 %, Range: [0 to 216 - 1], Default: 0

Returns the threshold as set by setHumidityCallbackThreshold().

The following constants are available for this function:

For option:

• BrickletHumidity.THRESHOLD_OPTION_OFF = 'x'
• BrickletHumidity.THRESHOLD_OPTION_OUTSIDE = 'o'
• BrickletHumidity.THRESHOLD_OPTION_INSIDE = 'i'
• BrickletHumidity.THRESHOLD_OPTION_SMALLER = '<'
• BrickletHumidity.THRESHOLD_OPTION_GREATER = '>'

void BrickletHumidity.setAnalogValueCallbackThreshold(char option, int min, int max)¶

Parameters:	option – Type: char, Range: See constants, Default: 'x' min – Type: int, Range: [0 to 216 - 1], Default: 0 max – Type: int, Range: [0 to 216 - 1], Default: 0

Sets the thresholds for the AnalogValueReachedListener listener.

The following options are possible:

Option	Description
'x'	Listener is turned off
'o'	Listener is triggered when the analog value is outside the min and max values
'i'	Listener is triggered when the analog value is inside the min and max values
'<'	Listener is triggered when the analog value is smaller than the min value (max is ignored)
'>'	Listener is triggered when the analog value is greater than the min value (max is ignored)

The following constants are available for this function:

For option:

• BrickletHumidity.THRESHOLD_OPTION_OFF = 'x'
• BrickletHumidity.THRESHOLD_OPTION_OUTSIDE = 'o'
• BrickletHumidity.THRESHOLD_OPTION_INSIDE = 'i'
• BrickletHumidity.THRESHOLD_OPTION_SMALLER = '<'
• BrickletHumidity.THRESHOLD_OPTION_GREATER = '>'

BrickletHumidity.AnalogValueCallbackThreshold BrickletHumidity.getAnalogValueCallbackThreshold()¶

Return Object:	option – Type: char, Range: See constants, Default: 'x' min – Type: int, Range: [0 to 216 - 1], Default: 0 max – Type: int, Range: [0 to 216 - 1], Default: 0

Returns the threshold as set by setAnalogValueCallbackThreshold().

The following constants are available for this function:

For option:

• BrickletHumidity.THRESHOLD_OPTION_OFF = 'x'
• BrickletHumidity.THRESHOLD_OPTION_OUTSIDE = 'o'
• BrickletHumidity.THRESHOLD_OPTION_INSIDE = 'i'
• BrickletHumidity.THRESHOLD_OPTION_SMALLER = '<'
• BrickletHumidity.THRESHOLD_OPTION_GREATER = '>'

void BrickletHumidity.setDebouncePeriod(long debounce)¶

Parameters:	debounce – Type: long, Unit: 1 ms, Range: [0 to 232 - 1], Default: 100

Sets the period with which the threshold listeners

• HumidityReachedListener,
• AnalogValueReachedListener

are triggered, if the thresholds

• setHumidityCallbackThreshold(),
• setAnalogValueCallbackThreshold()

keep being reached.

long BrickletHumidity.getDebouncePeriod()¶

Returns:	debounce – Type: long, Unit: 1 ms, Range: [0 to 232 - 1], Default: 100

Returns the debounce period as set by setDebouncePeriod().

Listeners¶

Listeners can be registered to receive time critical or recurring data from the device. The registration is done with add*Listener() functions of the device object.

The parameter is a listener class object, for example:

device.addExampleListener(new BrickletHumidity.ExampleListener() {
    public void property(int value) {
        System.out.println("Value: " + value);
    }
});

The available listener classes with inherent methods to be overwritten are described below. It is possible to add several listeners and to remove them with the corresponding remove*Listener() function.

class BrickletHumidity.HumidityListener()¶

This listener can be added with the addHumidityListener() function. An added listener can be removed with the removeHumidityListener() function.

void humidity(int humidity)

Parameters:	humidity – Type: int, Unit: 1/10 %, Range: [0 to 1000]

This listener is triggered periodically with the period that is set by setHumidityCallbackPeriod(). The parameter is the humidity of the sensor.

The HumidityListener listener is only triggered if the humidity has changed since the last triggering.

class BrickletHumidity.AnalogValueListener()¶

This listener can be added with the addAnalogValueListener() function. An added listener can be removed with the removeAnalogValueListener() function.

void analogValue(int value)

Parameters:	value – Type: int, Range: [0 to 212 - 1]

This listener is triggered periodically with the period that is set by setAnalogValueCallbackPeriod(). The parameter is the analog value of the sensor.

The AnalogValueListener listener is only triggered if the humidity has changed since the last triggering.

class BrickletHumidity.HumidityReachedListener()¶

This listener can be added with the addHumidityReachedListener() function. An added listener can be removed with the removeHumidityReachedListener() function.

void humidityReached(int humidity)

Parameters:	humidity – Type: int, Unit: 1/10 %, Range: [0 to 1000]

This listener is triggered when the threshold as set by setHumidityCallbackThreshold() is reached. The parameter is the humidity of the sensor.

If the threshold keeps being reached, the listener is triggered periodically with the period as set by setDebouncePeriod().

class BrickletHumidity.AnalogValueReachedListener()¶

This listener can be added with the addAnalogValueReachedListener() function. An added listener can be removed with the removeAnalogValueReachedListener() function.

void analogValueReached(int value)

Parameters:	value – Type: int, Range: [0 to 212 - 1]

This listener is triggered when the threshold as set by setAnalogValueCallbackThreshold() is reached. The parameter is the analog value of the sensor.

If the threshold keeps being reached, the listener is triggered periodically with the period as set by setDebouncePeriod().

Virtual Functions¶

Virtual functions don't communicate with the device itself, but operate only on the API bindings device object. They can be called without the corresponding IP Connection object being connected.

short[] BrickletHumidity.getAPIVersion()¶

Return Object:	apiVersion – Type: short[], Length: 3 0: major – Type: short, Range: [0 to 255] 1: minor – Type: short, Range: [0 to 255] 2: revision – Type: short, Range: [0 to 255]

Returns the version of the API definition implemented by this API bindings. This is neither the release version of this API bindings nor does it tell you anything about the represented Brick or Bricklet.

boolean BrickletHumidity.getResponseExpected(byte functionId)¶

Parameters:	functionId – Type: byte, Range: See constants
Returns:	responseExpected – Type: boolean

Returns the response expected flag for the function specified by the function ID parameter. It is true if the function is expected to send a response, false otherwise.

For getter functions this is enabled by default and cannot be disabled, because those functions will always send a response. For listener configuration functions it is enabled by default too, but can be disabled by setResponseExpected(). For setter functions it is disabled by default and can be enabled.

Enabling the response expected flag for a setter function allows to detect timeouts and other error conditions calls of this setter as well. The device will then send a response for this purpose. If this flag is disabled for a setter function then no response is sent and errors are silently ignored, because they cannot be detected.

The following constants are available for this function:

For functionId:

• BrickletHumidity.FUNCTION_SET_HUMIDITY_CALLBACK_PERIOD = 3
• BrickletHumidity.FUNCTION_SET_ANALOG_VALUE_CALLBACK_PERIOD = 5
• BrickletHumidity.FUNCTION_SET_HUMIDITY_CALLBACK_THRESHOLD = 7
• BrickletHumidity.FUNCTION_SET_ANALOG_VALUE_CALLBACK_THRESHOLD = 9
• BrickletHumidity.FUNCTION_SET_DEBOUNCE_PERIOD = 11

void BrickletHumidity.setResponseExpected(byte functionId, boolean responseExpected)¶

Parameters:	functionId – Type: byte, Range: See constants responseExpected – Type: boolean

Changes the response expected flag of the function specified by the function ID parameter. This flag can only be changed for setter (default value: false) and listener configuration functions (default value: true). For getter functions it is always enabled.

Enabling the response expected flag for a setter function allows to detect timeouts and other error conditions calls of this setter as well. The device will then send a response for this purpose. If this flag is disabled for a setter function then no response is sent and errors are silently ignored, because they cannot be detected.

The following constants are available for this function:

For functionId:

• BrickletHumidity.FUNCTION_SET_HUMIDITY_CALLBACK_PERIOD = 3
• BrickletHumidity.FUNCTION_SET_ANALOG_VALUE_CALLBACK_PERIOD = 5
• BrickletHumidity.FUNCTION_SET_HUMIDITY_CALLBACK_THRESHOLD = 7
• BrickletHumidity.FUNCTION_SET_ANALOG_VALUE_CALLBACK_THRESHOLD = 9
• BrickletHumidity.FUNCTION_SET_DEBOUNCE_PERIOD = 11

void BrickletHumidity.setResponseExpectedAll(boolean responseExpected)¶

Parameters:	responseExpected – Type: boolean

Changes the response expected flag for all setter and listener configuration functions of this device at once.

Constants¶

int BrickletHumidity.DEVICE_IDENTIFIER¶

This constant is used to identify a Humidity Bricklet.

The getIdentity() function and the IPConnection.EnumerateListener listener of the IP Connection have a deviceIdentifier parameter to specify the Brick's or Bricklet's type.

String BrickletHumidity.DEVICE_DISPLAY_NAME¶

This constant represents the human readable name of a Humidity Bricklet.