MATLAB/Octave - Industrial Dual Analog In Bricklet 2.0

This is the description of the MATLAB/Octave API bindings for the Industrial Dual Analog In Bricklet 2.0. General information and technical specifications for the Industrial Dual Analog In Bricklet 2.0 are summarized in its hardware description.

An installation guide for the MATLAB/Octave API bindings is part of their general description.

Examples

The example code below is Public Domain (CC0 1.0).

Simple (MATLAB)

Download (matlab_example_simple.m)

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function matlab_example_simple()
    import com.tinkerforge.IPConnection;
    import com.tinkerforge.BrickletIndustrialDualAnalogInV2;

    HOST = 'localhost';
    PORT = 4223;
    UID = 'XYZ'; % Change XYZ to the UID of your Industrial Dual Analog In Bricklet 2.0

    ipcon = IPConnection(); % Create IP connection
    idai = handle(BrickletIndustrialDualAnalogInV2(UID, ipcon), 'CallbackProperties'); % Create device object

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

    % Get current voltage from channel 0
    voltage = idai.getVoltage(0);
    fprintf('Voltage (Channel 0): %g V\n', voltage/1000.0);

    input('Press key to exit\n', 's');
    ipcon.disconnect();
end

Callback (MATLAB)

Download (matlab_example_callback.m)

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function matlab_example_callback()
    import com.tinkerforge.IPConnection;
    import com.tinkerforge.BrickletIndustrialDualAnalogInV2;

    HOST = 'localhost';
    PORT = 4223;
    UID = 'XYZ'; % Change XYZ to the UID of your Industrial Dual Analog In Bricklet 2.0

    ipcon = IPConnection(); % Create IP connection
    idai = handle(BrickletIndustrialDualAnalogInV2(UID, ipcon), 'CallbackProperties'); % Create device object

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

    % Register voltage callback to function cb_voltage
    set(idai, 'VoltageCallback', @(h, e) cb_voltage(e));

    % Set period for voltage (channel 0) callback to 1s (1000ms) without a threshold
    idai.setVoltageCallbackConfiguration(0, 1000, false, 'x', 0, 0);

    input('Press key to exit\n', 's');
    ipcon.disconnect();
end

% Callback function for voltage callback
function cb_voltage(e)
    fprintf('Channel: %i\n', e.channel);
    fprintf('Voltage: %g V\n', e.voltage/1000.0);
    fprintf('\n');
end

Threshold (MATLAB)

Download (matlab_example_threshold.m)

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function matlab_example_threshold()
    import com.tinkerforge.IPConnection;
    import com.tinkerforge.BrickletIndustrialDualAnalogInV2;

    HOST = 'localhost';
    PORT = 4223;
    UID = 'XYZ'; % Change XYZ to the UID of your Industrial Dual Analog In Bricklet 2.0

    ipcon = IPConnection(); % Create IP connection
    idai = handle(BrickletIndustrialDualAnalogInV2(UID, ipcon), 'CallbackProperties'); % Create device object

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

    % Register voltage callback to function cb_voltage
    set(idai, 'VoltageCallback', @(h, e) cb_voltage(e));

    % Configure threshold for voltage (channel 0) "greater than 10 V"
    % with a debounce period of 10s (10000ms)
    idai.setVoltageCallbackConfiguration(0, 10000, false, '>', 10*1000, 0);

    input('Press key to exit\n', 's');
    ipcon.disconnect();
end

% Callback function for voltage callback
function cb_voltage(e)
    fprintf('Channel: %i\n', e.channel);
    fprintf('Voltage: %g V\n', e.voltage/1000.0);
    fprintf('\n');
end

Simple (Octave)

Download (octave_example_simple.m)

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function octave_example_simple()
    more off;

    HOST = "localhost";
    PORT = 4223;
    UID = "XYZ"; % Change XYZ to the UID of your Industrial Dual Analog In Bricklet 2.0

    ipcon = javaObject("com.tinkerforge.IPConnection"); % Create IP connection
    idai = javaObject("com.tinkerforge.BrickletIndustrialDualAnalogInV2", UID, ipcon); % Create device object

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

    % Get current voltage from channel 0
    voltage = idai.getVoltage(0);
    fprintf("Voltage (Channel 0): %g V\n", voltage/1000.0);

    input("Press key to exit\n", "s");
    ipcon.disconnect();
end

Callback (Octave)

Download (octave_example_callback.m)

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function octave_example_callback()
    more off;

    HOST = "localhost";
    PORT = 4223;
    UID = "XYZ"; % Change XYZ to the UID of your Industrial Dual Analog In Bricklet 2.0

    ipcon = javaObject("com.tinkerforge.IPConnection"); % Create IP connection
    idai = javaObject("com.tinkerforge.BrickletIndustrialDualAnalogInV2", UID, ipcon); % Create device object

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

    % Register voltage callback to function cb_voltage
    idai.addVoltageCallback(@cb_voltage);

    % Set period for voltage (channel 0) callback to 1s (1000ms) without a threshold
    idai.setVoltageCallbackConfiguration(0, 1000, false, "x", 0, 0);

    input("Press key to exit\n", "s");
    ipcon.disconnect();
end

% Callback function for voltage callback
function cb_voltage(e)
    fprintf("Channel: %d\n", e.channel);
    fprintf("Voltage: %g V\n", e.voltage/1000.0);
    fprintf("\n");
end

Threshold (Octave)

Download (octave_example_threshold.m)

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function octave_example_threshold()
    more off;

    HOST = "localhost";
    PORT = 4223;
    UID = "XYZ"; % Change XYZ to the UID of your Industrial Dual Analog In Bricklet 2.0

    ipcon = javaObject("com.tinkerforge.IPConnection"); % Create IP connection
    idai = javaObject("com.tinkerforge.BrickletIndustrialDualAnalogInV2", UID, ipcon); % Create device object

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

    % Register voltage callback to function cb_voltage
    idai.addVoltageCallback(@cb_voltage);

    % Configure threshold for voltage (channel 0) "greater than 10 V"
    % with a debounce period of 10s (10000ms)
    idai.setVoltageCallbackConfiguration(0, 10000, false, ">", 10*1000, 0);

    input("Press key to exit\n", "s");
    ipcon.disconnect();
end

% Callback function for voltage callback
function cb_voltage(e)
    fprintf("Channel: %d\n", e.channel);
    fprintf("Voltage: %g V\n", e.voltage/1000.0);
    fprintf("\n");
end

API

Generally, every method of the MATLAB bindings that returns a value can throw a TimeoutException. This exception gets thrown if the device did not respond. If a cable based connection is used, it is unlikely that this exception gets thrown (assuming nobody unplugs the device). However, if a wireless connection is used, timeouts will occur if the distance to the device gets too big.

Beside the TimeoutException there is also a NotConnectedException that is thrown if a method needs to communicate with the device while the IP Connection is not connected.

Since the MATLAB bindings are based on Java and Java does not support multiple return values and return by reference is not possible for primitive types, we use small classes that only consist of member variables. The member variables of the returned objects are described in the corresponding method descriptions.

The package for all Brick/Bricklet bindings and the IP Connection is com.tinkerforge.*

All methods listed below are thread-safe.

Basic Functions

public class BrickletIndustrialDualAnalogInV2(String uid, IPConnection ipcon)

Creates an object with the unique device ID uid.

In MATLAB:

import com.tinkerforge.BrickletIndustrialDualAnalogInV2;

industrialDualAnalogInV2 = BrickletIndustrialDualAnalogInV2('YOUR_DEVICE_UID', ipcon);

In Octave:

industrialDualAnalogInV2 = java_new("com.tinkerforge.BrickletIndustrialDualAnalogInV2", "YOUR_DEVICE_UID", ipcon);

This object can then be used after the IP Connection is connected (see examples above).

public int getVoltage(int channel)

Returns the voltage for the given channel in mV.

If you want to get the value periodically, it is recommended to use the VoltageCallback callback. You can set the callback configuration with setVoltageCallbackConfiguration().

public void setChannelLEDConfig(int channel, int config)

Each channel has a corresponding LED. You can turn the LED off, on or show a heartbeat. You can also set the LED to "Channel Status". In this mode the LED can either be turned on with a pre-defined threshold or the intensity of the LED can change with the measured value.

You can configure the channel status behavior with setChannelLEDStatusConfig().

By default all channel LEDs are configured as "Channel Status".

The following constants are available for this function:

  • BrickletIndustrialDualAnalogInV2.CHANNEL_LED_CONFIG_OFF = 0
  • BrickletIndustrialDualAnalogInV2.CHANNEL_LED_CONFIG_ON = 1
  • BrickletIndustrialDualAnalogInV2.CHANNEL_LED_CONFIG_SHOW_HEARTBEAT = 2
  • BrickletIndustrialDualAnalogInV2.CHANNEL_LED_CONFIG_SHOW_CHANNEL_STATUS = 3
public int getChannelLEDConfig(int channel)

Returns the channel LED configuration as set by setChannelLEDConfig()

The following constants are available for this function:

  • BrickletIndustrialDualAnalogInV2.CHANNEL_LED_CONFIG_OFF = 0
  • BrickletIndustrialDualAnalogInV2.CHANNEL_LED_CONFIG_ON = 1
  • BrickletIndustrialDualAnalogInV2.CHANNEL_LED_CONFIG_SHOW_HEARTBEAT = 2
  • BrickletIndustrialDualAnalogInV2.CHANNEL_LED_CONFIG_SHOW_CHANNEL_STATUS = 3
public void setChannelLEDStatusConfig(int channel, int min, int max, int config)

Sets the channel LED status config. This config is used if the channel LED is configured as "Channel Status", see setChannelLEDConfig().

For each channel you can choose between threshold and intensity mode.

In threshold mode you can define a positive or a negative threshold. For a positive threshold set the "min" parameter to the threshold value in mV above which the LED should turn on and set the "max" parameter to 0. Example: If you set a positive threshold of 10V, the LED will turn on as soon as the voltage exceeds 10V and turn off again if it goes below 10V. For a negative threshold set the "max" parameter to the threshold value in mV below which the LED should turn on and set the "min" parameter to 0. Example: If you set a negative threshold of 10V, the LED will turn on as soon as the voltage goes below 10V and the LED will turn off when the voltage exceeds 10V.

In intensity mode you can define a range in mV that is used to scale the brightness of the LED. Example with min=4V, max=20V: The LED is off at 4V, on at 20V and the brightness is linearly scaled between the values 4V and 20V. If the min value is greater than the max value, the LED brightness is scaled the other way around.

By default the channel LED status config is set to intensity with min=0V and max=10V.

The following constants are available for this function:

  • BrickletIndustrialDualAnalogInV2.CHANNEL_LED_STATUS_CONFIG_THRESHOLD = 0
  • BrickletIndustrialDualAnalogInV2.CHANNEL_LED_STATUS_CONFIG_INTENSITY = 1
public BrickletIndustrialDualAnalogInV2.ChannelLEDStatusConfig getChannelLEDStatusConfig(int channel)

Returns the channel LED status configuration as set by setChannelLEDStatusConfig().

The following constants are available for this function:

  • BrickletIndustrialDualAnalogInV2.CHANNEL_LED_STATUS_CONFIG_THRESHOLD = 0
  • BrickletIndustrialDualAnalogInV2.CHANNEL_LED_STATUS_CONFIG_INTENSITY = 1

The returned object has the public member variables int min, int max and int config.

Advanced Functions

public void setSampleRate(int rate)

Sets the sample rate. The sample rate can be between 1 sample per second and 976 samples per second. Decreasing the sample rate will also decrease the noise on the data.

The default value is 6 (2 samples per second).

The following constants are available for this function:

  • BrickletIndustrialDualAnalogInV2.SAMPLE_RATE_976_SPS = 0
  • BrickletIndustrialDualAnalogInV2.SAMPLE_RATE_488_SPS = 1
  • BrickletIndustrialDualAnalogInV2.SAMPLE_RATE_244_SPS = 2
  • BrickletIndustrialDualAnalogInV2.SAMPLE_RATE_122_SPS = 3
  • BrickletIndustrialDualAnalogInV2.SAMPLE_RATE_61_SPS = 4
  • BrickletIndustrialDualAnalogInV2.SAMPLE_RATE_4_SPS = 5
  • BrickletIndustrialDualAnalogInV2.SAMPLE_RATE_2_SPS = 6
  • BrickletIndustrialDualAnalogInV2.SAMPLE_RATE_1_SPS = 7
public int getSampleRate()

Returns the sample rate as set by setSampleRate().

The following constants are available for this function:

  • BrickletIndustrialDualAnalogInV2.SAMPLE_RATE_976_SPS = 0
  • BrickletIndustrialDualAnalogInV2.SAMPLE_RATE_488_SPS = 1
  • BrickletIndustrialDualAnalogInV2.SAMPLE_RATE_244_SPS = 2
  • BrickletIndustrialDualAnalogInV2.SAMPLE_RATE_122_SPS = 3
  • BrickletIndustrialDualAnalogInV2.SAMPLE_RATE_61_SPS = 4
  • BrickletIndustrialDualAnalogInV2.SAMPLE_RATE_4_SPS = 5
  • BrickletIndustrialDualAnalogInV2.SAMPLE_RATE_2_SPS = 6
  • BrickletIndustrialDualAnalogInV2.SAMPLE_RATE_1_SPS = 7
public void setCalibration(int[] offset, int[] gain)

Sets offset and gain of MCP3911 internal calibration registers.

See MCP3911 datasheet 7.7 and 7.8. The Industrial Dual Analog In Bricklet 2.0 is already factory calibrated by Tinkerforge. It should not be necessary for you to use this function

public BrickletIndustrialDualAnalogInV2.Calibration getCalibration()

Returns the calibration as set by setCalibration().

The returned object has the public member variables int[] offset and int[] gain.

public int[] getADCValues()

Returns the ADC values as given by the MCP3911 IC. This function is needed for proper calibration, see setCalibration().

public int[] getAPIVersion()

Returns the version of the API definition (major, minor, revision) 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.

public boolean getResponseExpected(int functionId)

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 callback 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 send and errors are silently ignored, because they cannot be detected.

See setResponseExpected() for the list of function ID constants available for this function.

public void setResponseExpected(int functionId, boolean responseExpected)

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 callback 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 send and errors are silently ignored, because they cannot be detected.

The following function ID constants are available for this function:

  • BrickletIndustrialDualAnalogInV2.FUNCTION_SET_VOLTAGE_CALLBACK_CONFIGURATION = 2
  • BrickletIndustrialDualAnalogInV2.FUNCTION_SET_SAMPLE_RATE = 5
  • BrickletIndustrialDualAnalogInV2.FUNCTION_SET_CALIBRATION = 7
  • BrickletIndustrialDualAnalogInV2.FUNCTION_SET_CHANNEL_LED_CONFIG = 10
  • BrickletIndustrialDualAnalogInV2.FUNCTION_SET_CHANNEL_LED_STATUS_CONFIG = 12
  • BrickletIndustrialDualAnalogInV2.FUNCTION_SET_WRITE_FIRMWARE_POINTER = 237
  • BrickletIndustrialDualAnalogInV2.FUNCTION_SET_STATUS_LED_CONFIG = 239
  • BrickletIndustrialDualAnalogInV2.FUNCTION_RESET = 243
  • BrickletIndustrialDualAnalogInV2.FUNCTION_WRITE_UID = 248
public void setResponseExpectedAll(boolean responseExpected)

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

public BrickletIndustrialDualAnalogInV2.SPITFPErrorCount getSPITFPErrorCount()

Returns the error count for the communication between Brick and Bricklet.

The errors are divided into

  • ACK checksum errors,
  • message checksum errors,
  • framing errors and
  • overflow errors.

The errors counts are for errors that occur on the Bricklet side. All Bricks have a similar function that returns the errors on the Brick side.

The returned object has the public member variables long errorCountAckChecksum, long errorCountMessageChecksum, long errorCountFrame and long errorCountOverflow.

public int setBootloaderMode(int mode)

Sets the bootloader mode and returns the status after the requested mode change was instigated.

You can change from bootloader mode to firmware mode and vice versa. A change from bootloader mode to firmware mode will only take place if the entry function, device identifier and CRC are present and correct.

This function is used by Brick Viewer during flashing. It should not be necessary to call it in a normal user program.

The following constants are available for this function:

  • BrickletIndustrialDualAnalogInV2.BOOTLOADER_MODE_BOOTLOADER = 0
  • BrickletIndustrialDualAnalogInV2.BOOTLOADER_MODE_FIRMWARE = 1
  • BrickletIndustrialDualAnalogInV2.BOOTLOADER_MODE_BOOTLOADER_WAIT_FOR_REBOOT = 2
  • BrickletIndustrialDualAnalogInV2.BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_REBOOT = 3
  • BrickletIndustrialDualAnalogInV2.BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_ERASE_AND_REBOOT = 4
  • BrickletIndustrialDualAnalogInV2.BOOTLOADER_STATUS_OK = 0
  • BrickletIndustrialDualAnalogInV2.BOOTLOADER_STATUS_INVALID_MODE = 1
  • BrickletIndustrialDualAnalogInV2.BOOTLOADER_STATUS_NO_CHANGE = 2
  • BrickletIndustrialDualAnalogInV2.BOOTLOADER_STATUS_ENTRY_FUNCTION_NOT_PRESENT = 3
  • BrickletIndustrialDualAnalogInV2.BOOTLOADER_STATUS_DEVICE_IDENTIFIER_INCORRECT = 4
  • BrickletIndustrialDualAnalogInV2.BOOTLOADER_STATUS_CRC_MISMATCH = 5
public int getBootloaderMode()

Returns the current bootloader mode, see setBootloaderMode().

The following constants are available for this function:

  • BrickletIndustrialDualAnalogInV2.BOOTLOADER_MODE_BOOTLOADER = 0
  • BrickletIndustrialDualAnalogInV2.BOOTLOADER_MODE_FIRMWARE = 1
  • BrickletIndustrialDualAnalogInV2.BOOTLOADER_MODE_BOOTLOADER_WAIT_FOR_REBOOT = 2
  • BrickletIndustrialDualAnalogInV2.BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_REBOOT = 3
  • BrickletIndustrialDualAnalogInV2.BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_ERASE_AND_REBOOT = 4
public void setWriteFirmwarePointer(long pointer)

Sets the firmware pointer for writeFirmware(). The pointer has to be increased by chunks of size 64. The data is written to flash every 4 chunks (which equals to one page of size 256).

This function is used by Brick Viewer during flashing. It should not be necessary to call it in a normal user program.

public int writeFirmware(int[] data)

Writes 64 Bytes of firmware at the position as written by setWriteFirmwarePointer() before. The firmware is written to flash every 4 chunks.

You can only write firmware in bootloader mode.

This function is used by Brick Viewer during flashing. It should not be necessary to call it in a normal user program.

public void setStatusLEDConfig(int config)

Sets the status LED configuration. By default the LED shows communication traffic between Brick and Bricklet, it flickers once for every 10 received data packets.

You can also turn the LED permanently on/off or show a heartbeat.

If the Bricklet is in bootloader mode, the LED is will show heartbeat by default.

The following constants are available for this function:

  • BrickletIndustrialDualAnalogInV2.STATUS_LED_CONFIG_OFF = 0
  • BrickletIndustrialDualAnalogInV2.STATUS_LED_CONFIG_ON = 1
  • BrickletIndustrialDualAnalogInV2.STATUS_LED_CONFIG_SHOW_HEARTBEAT = 2
  • BrickletIndustrialDualAnalogInV2.STATUS_LED_CONFIG_SHOW_STATUS = 3
public int getStatusLEDConfig()

Returns the configuration as set by setStatusLEDConfig()

The following constants are available for this function:

  • BrickletIndustrialDualAnalogInV2.STATUS_LED_CONFIG_OFF = 0
  • BrickletIndustrialDualAnalogInV2.STATUS_LED_CONFIG_ON = 1
  • BrickletIndustrialDualAnalogInV2.STATUS_LED_CONFIG_SHOW_HEARTBEAT = 2
  • BrickletIndustrialDualAnalogInV2.STATUS_LED_CONFIG_SHOW_STATUS = 3
public int getChipTemperature()

Returns the temperature in °C as measured inside the microcontroller. The value returned is not the ambient temperature!

The temperature is only proportional to the real temperature and it has bad accuracy. Practically it is only useful as an indicator for temperature changes.

public void reset()

Calling this function will reset the Bricklet. All configurations will be lost.

After a reset you have to create new device objects, calling functions on the existing ones will result in undefined behavior!

public void writeUID(long uid)

Writes a new UID into flash. If you want to set a new UID you have to decode the Base58 encoded UID string into an integer first.

We recommend that you use Brick Viewer to change the UID.

public long readUID()

Returns the current UID as an integer. Encode as Base58 to get the usual string version.

public BrickletIndustrialDualAnalogInV2.Identity getIdentity()

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' or 'd'.

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

The returned object has the public member variables String uid, String connectedUid, char position, int[] hardwareVersion, int[] firmwareVersion and int deviceIdentifier.

Callback Configuration Functions

public void setVoltageCallbackConfiguration(int channel, long period, boolean valueHasToChange, char option, int min, int max)

The period in ms is the period with which the VoltageCallback callback is triggered periodically. A value of 0 turns the callback off.

If the value has to change-parameter is set to true, the callback is only triggered after the value has changed. If the value didn't change within the period, the callback is triggered immediately on change.

If it is set to false, the callback is continuously triggered with the period, independent of the value.

It is furthermore possible to constrain the callback with thresholds.

The option-parameter together with min/max sets a threshold for the VoltageCallback callback.

The following options are possible:

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

If the option is set to 'x' (threshold turned off) the callback is triggered with the fixed period.

The default value is (0, false, 'x', 0, 0).

The following constants are available for this function:

  • BrickletIndustrialDualAnalogInV2.THRESHOLD_OPTION_OFF = 'x'
  • BrickletIndustrialDualAnalogInV2.THRESHOLD_OPTION_OUTSIDE = 'o'
  • BrickletIndustrialDualAnalogInV2.THRESHOLD_OPTION_INSIDE = 'i'
  • BrickletIndustrialDualAnalogInV2.THRESHOLD_OPTION_SMALLER = '<'
  • BrickletIndustrialDualAnalogInV2.THRESHOLD_OPTION_GREATER = '>'
public BrickletIndustrialDualAnalogInV2.VoltageCallbackConfiguration getVoltageCallbackConfiguration(int channel)

Returns the callback configuration as set by setVoltageCallbackConfiguration().

The following constants are available for this function:

  • BrickletIndustrialDualAnalogInV2.THRESHOLD_OPTION_OFF = 'x'
  • BrickletIndustrialDualAnalogInV2.THRESHOLD_OPTION_OUTSIDE = 'o'
  • BrickletIndustrialDualAnalogInV2.THRESHOLD_OPTION_INSIDE = 'i'
  • BrickletIndustrialDualAnalogInV2.THRESHOLD_OPTION_SMALLER = '<'
  • BrickletIndustrialDualAnalogInV2.THRESHOLD_OPTION_GREATER = '>'

The returned object has the public member variables long period, boolean valueHasToChange, char option, int min and int max.

Callbacks

Callbacks can be registered to receive time critical or recurring data from the device. The registration is done with "set" function of MATLAB. The parameters consist of the IP Connection object, the callback name and the callback function. For example, it looks like this in MATLAB:

function my_callback(e)
    fprintf('Parameter: %s\n', e.param);
end

set(device, 'ExampleCallback', @(h, e) my_callback(e));

Due to a difference in the Octave Java support the "set" function cannot be used in Octave. The registration is done with "add*Callback" functions of the device object. It looks like this in Octave:

function my_callback(e)
    fprintf("Parameter: %s\n", e.param);
end

device.addExampleCallback(@my_callback);

It is possible to add several callbacks and to remove them with the corresponding "remove*Callback" function.

The parameters of the callback are passed to the callback function as fields of the structure e, which is derived from the java.util.EventObject class. The available callback names with corresponding structure fields are described below.

Note

Using callbacks for recurring events is always preferred compared to using getters. It will use less USB bandwidth and the latency will be a lot better, since there is no round trip time.

public callback BrickletIndustrialDualAnalogInV2.VoltageCallback
Parameters:
  • channel -- int
  • voltage -- int

This callback is triggered periodically according to the configuration set by setVoltageCallbackConfiguration().

The parameter is the same as getVoltage().

In MATLAB the set() function can be used to register a callback function to this callback.

In Octave a callback function can be added to this callback using the addVoltageCallback() function. An added callback function can be removed with the removeVoltageCallback() function.

Constants

public static final int BrickletIndustrialDualAnalogInV2.DEVICE_IDENTIFIER

This constant is used to identify a Industrial Dual Analog In Bricklet 2.0.

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

public static final String BrickletIndustrialDualAnalogInV2.DEVICE_DISPLAY_NAME

This constant represents the human readable name of a Industrial Dual Analog In Bricklet 2.0.