Java - Dual Relay Bricklet¶

Simple¶

Download (ExampleSimple.java)

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

import com.tinkerforge.IPConnection;
import com.tinkerforge.BrickletDualRelay;

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

    // Change XYZ to the UID of your Dual Relay 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
        BrickletDualRelay dr = new BrickletDualRelay(UID, ipcon); // Create device object

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

        // Turn relays alternating on/off 10 times with 1 second delay
        for(int i = 0; i < 5; i++) {
            Thread.sleep(1000);
            dr.setState(true, false);
            Thread.sleep(1000);
            dr.setState(false, true);
        }

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

Basic Functions¶

class BrickletDualRelay(String uid, IPConnection ipcon)¶

Parameters:	uid – Type: String ipcon – Type: IPConnection
Returns:	dualRelay – Type: BrickletDualRelay

Creates an object with the unique device ID uid:

BrickletDualRelay dualRelay = new BrickletDualRelay("YOUR_DEVICE_UID", ipcon);

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

void BrickletDualRelay.setState(boolean relay1, boolean relay2)¶

Parameters:	relay1 – Type: boolean, Default: false relay2 – Type: boolean, Default: false

Sets the state of the relays, true means on and false means off. For example: (true, false) turns relay 1 on and relay 2 off.

If you just want to set one of the relays and don't know the current state of the other relay, you can get the state with getState() or you can use setSelectedState().

All running monoflop timers will be aborted if this function is called.

BrickletDualRelay.State BrickletDualRelay.getState()¶

Return Object:	relay1 – Type: boolean, Default: false relay2 – Type: boolean, Default: false

Returns the state of the relays, true means on and false means off.

Advanced Functions¶

void BrickletDualRelay.setMonoflop(short relay, boolean state, long time)¶

Parameters:	relay – Type: short, Range: [1 to 2] state – Type: boolean time – Type: long, Unit: 1 ms, Range: [0 to 232 - 1]

The first parameter can be 1 or 2 (relay 1 or relay 2). The second parameter is the desired state of the relay (true means on and false means off). The third parameter indicates the time that the relay should hold the state.

If this function is called with the parameters (1, true, 1500): Relay 1 will turn on and in 1.5s it will turn off again.

A monoflop can be used as a failsafe mechanism. For example: Lets assume you have a RS485 bus and a Dual Relay Bricklet connected to one of the slave stacks. You can now call this function every second, with a time parameter of two seconds. The relay will be on all the time. If now the RS485 connection is lost, the relay will turn off in at most two seconds.

BrickletDualRelay.Monoflop BrickletDualRelay.getMonoflop(short relay)¶

Parameters:	relay – Type: short, Range: [1 to 2]
Return Object:	state – Type: boolean time – Type: long, Unit: 1 ms, Range: [0 to 232 - 1] timeRemaining – Type: long, Unit: 1 ms, Range: [0 to 232 - 1]

Returns (for the given relay) the current state and the time as set by setMonoflop() as well as the remaining time until the state flips.

If the timer is not running currently, the remaining time will be returned as 0.

void BrickletDualRelay.setSelectedState(short relay, boolean state)¶

Parameters:	relay – Type: short, Range: [1 to 2] state – Type: boolean

Sets the state of the selected relay (1 or 2), true means on and false means off.

A running monoflop timer for the selected relay will be aborted if this function is called.

The other relay remains untouched.

BrickletDualRelay.Identity BrickletDualRelay.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.

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 BrickletDualRelay.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 BrickletDualRelay.MonoflopDoneListener()¶

This listener can be added with the addMonoflopDoneListener() function. An added listener can be removed with the removeMonoflopDoneListener() function.

void monoflopDone(short relay, boolean state)

Parameters:	relay – Type: short, Range: [1 to 2] state – Type: boolean

This listener is triggered whenever a monoflop timer reaches 0. The parameter contain the relay (1 or 2) and the current state of the relay (the state after the monoflop).

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[] BrickletDualRelay.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 BrickletDualRelay.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:

• BrickletDualRelay.FUNCTION_SET_STATE = 1
• BrickletDualRelay.FUNCTION_SET_MONOFLOP = 3
• BrickletDualRelay.FUNCTION_SET_SELECTED_STATE = 6

void BrickletDualRelay.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:

• BrickletDualRelay.FUNCTION_SET_STATE = 1
• BrickletDualRelay.FUNCTION_SET_MONOFLOP = 3
• BrickletDualRelay.FUNCTION_SET_SELECTED_STATE = 6

void BrickletDualRelay.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 BrickletDualRelay.DEVICE_IDENTIFIER¶

This constant is used to identify a Dual Relay 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 BrickletDualRelay.DEVICE_DISPLAY_NAME¶

This constant represents the human readable name of a Dual Relay Bricklet.