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.
The example code below is Public Domain (CC0 1.0).
Download (matlab_example_simple.m)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | 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
|
Download (matlab_example_callback.m)
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 | 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
|
Download (matlab_example_threshold.m)
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 | 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
|
Download (octave_example_simple.m)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | 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
|
Download (octave_example_callback.m)
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 | 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
|
Download (octave_example_threshold.m)
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 | 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
|
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.
The Bricklet has two input channel. Functions that are related
directly to a channel have a channel
parameter to specify one of the two
channels. Valid values for the channel
parameter are 0 and 1.
BrickletIndustrialDualAnalogInV2
(String uid, IPConnection ipcon)¶Parameters: |
|
---|---|
Returns: |
|
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.
BrickletIndustrialDualAnalogInV2.
getVoltage
(int channel)¶Parameters: |
|
---|---|
Returns: |
|
Returns the voltage for the given channel.
If you want to get the value periodically, it is recommended to use the
VoltageCallback
callback. You can set the callback configuration
with setVoltageCallbackConfiguration()
.
BrickletIndustrialDualAnalogInV2.
setChannelLEDConfig
(int channel, int config)¶Parameters: |
|
---|
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:
For config:
BrickletIndustrialDualAnalogInV2.
getChannelLEDConfig
(int channel)¶Parameters: |
|
---|---|
Returns: |
|
Returns the channel LED configuration as set by setChannelLEDConfig()
The following constants are available for this function:
For config:
BrickletIndustrialDualAnalogInV2.
setChannelLEDStatusConfig
(int channel, int min, int max, int config)¶Parameters: |
|
---|
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.
The following constants are available for this function:
For config:
BrickletIndustrialDualAnalogInV2.
getChannelLEDStatusConfig
(int channel)¶Parameters: |
|
---|---|
Return Object: |
|
Returns the channel LED status configuration as set by
setChannelLEDStatusConfig()
.
The following constants are available for this function:
For config:
BrickletIndustrialDualAnalogInV2.
setSampleRate
(int rate)¶Parameters: |
|
---|
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 following constants are available for this function:
For rate:
BrickletIndustrialDualAnalogInV2.
getSampleRate
()¶Returns: |
|
---|
Returns the sample rate as set by setSampleRate()
.
The following constants are available for this function:
For rate:
BrickletIndustrialDualAnalogInV2.
setCalibration
(int[] offset, int[] gain)¶Parameters: |
|
---|
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
BrickletIndustrialDualAnalogInV2.
getCalibration
()¶Return Object: |
|
---|
Returns the calibration as set by setCalibration()
.
BrickletIndustrialDualAnalogInV2.
getADCValues
()¶Returns: |
|
---|
Returns the ADC values as given by the MCP3911 IC. This function
is needed for proper calibration, see setCalibration()
.
BrickletIndustrialDualAnalogInV2.
getAllVoltages
()¶Returns: |
|
---|
Returns the voltages for all channels.
If you want to get the value periodically, it is recommended to use the
AllVoltagesCallback
callback. You can set the callback configuration
with setAllVoltagesCallbackConfiguration()
.
New in version 2.0.6 (Plugin).
BrickletIndustrialDualAnalogInV2.
getSPITFPErrorCount
()¶Return Object: |
|
---|
Returns the error count for the communication between Brick and Bricklet.
The errors are divided into
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.
BrickletIndustrialDualAnalogInV2.
setStatusLEDConfig
(int config)¶Parameters: |
|
---|
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:
For config:
BrickletIndustrialDualAnalogInV2.
getStatusLEDConfig
()¶Returns: |
|
---|
Returns the configuration as set by setStatusLEDConfig()
The following constants are available for this function:
For config:
BrickletIndustrialDualAnalogInV2.
getChipTemperature
()¶Returns: |
|
---|
Returns the temperature 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.
BrickletIndustrialDualAnalogInV2.
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!
BrickletIndustrialDualAnalogInV2.
getIdentity
()¶Return Object: |
|
---|
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.
BrickletIndustrialDualAnalogInV2.
setVoltageCallbackConfiguration
(int channel, long period, boolean valueHasToChange, char option, int min, int max)¶Parameters: |
|
---|
The period 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 following constants are available for this function:
For option:
BrickletIndustrialDualAnalogInV2.
getVoltageCallbackConfiguration
(int channel)¶Parameters: |
|
---|---|
Return Object: |
|
Returns the callback configuration as set by setVoltageCallbackConfiguration()
.
The following constants are available for this function:
For option:
BrickletIndustrialDualAnalogInV2.
setAllVoltagesCallbackConfiguration
(long period, boolean valueHasToChange)¶Parameters: |
|
---|
The period is the period with which the AllVoltagesCallback
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 at least one of the values has changed. If the values 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.
New in version 2.0.6 (Plugin).
BrickletIndustrialDualAnalogInV2.
getAllVoltagesCallbackConfiguration
()¶Return Object: |
|
---|
Returns the callback configuration as set by
setAllVoltagesCallbackConfiguration()
.
New in version 2.0.6 (Plugin).
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.
BrickletIndustrialDualAnalogInV2.
VoltageCallback
¶Event Object: |
|
---|
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.
BrickletIndustrialDualAnalogInV2.
AllVoltagesCallback
¶Event Object: |
|
---|
This callback is triggered periodically according to the configuration set by
setAllVoltagesCallbackConfiguration()
.
The parameters are the same as getAllVoltages()
.
New in version 2.0.6 (Plugin).
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
addAllVoltagesCallback()
function. An added callback function can be removed with
the removeAllVoltagesCallback()
function.
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.
BrickletIndustrialDualAnalogInV2.
getAPIVersion
()¶Return Object: |
|
---|
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.
BrickletIndustrialDualAnalogInV2.
getResponseExpected
(byte functionId)¶Parameters: |
|
---|---|
Returns: |
|
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 sent and errors are silently ignored, because they cannot be detected.
The following constants are available for this function:
For functionId:
BrickletIndustrialDualAnalogInV2.
setResponseExpected
(byte functionId, boolean responseExpected)¶Parameters: |
|
---|
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 sent and errors are silently ignored, because they cannot be detected.
The following constants are available for this function:
For functionId:
BrickletIndustrialDualAnalogInV2.
setResponseExpectedAll
(boolean responseExpected)¶Parameters: |
|
---|
Changes the response expected flag for all setter and callback configuration functions of this device at once.
Internal functions are used for maintenance tasks such as flashing a new firmware of changing the UID of a Bricklet. These task should be performed using Brick Viewer instead of using the internal functions directly.
BrickletIndustrialDualAnalogInV2.
setBootloaderMode
(int mode)¶Parameters: |
|
---|---|
Returns: |
|
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:
For mode:
For status:
BrickletIndustrialDualAnalogInV2.
getBootloaderMode
()¶Returns: |
|
---|
Returns the current bootloader mode, see setBootloaderMode()
.
The following constants are available for this function:
For mode:
BrickletIndustrialDualAnalogInV2.
setWriteFirmwarePointer
(long pointer)¶Parameters: |
|
---|
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.
BrickletIndustrialDualAnalogInV2.
writeFirmware
(int[] data)¶Parameters: |
|
---|---|
Returns: |
|
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.
BrickletIndustrialDualAnalogInV2.
writeUID
(long uid)¶Parameters: |
|
---|
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.
BrickletIndustrialDualAnalogInV2.
readUID
()¶Returns: |
|
---|
Returns the current UID as an integer. Encode as Base58 to get the usual string version.
BrickletIndustrialDualAnalogInV2.
DEVICE_IDENTIFIER
¶This constant is used to identify a Industrial Dual Analog In Bricklet 2.0.
The getIdentity()
function and the
IPConnection.EnumerateCallback
callback of the IP Connection have a deviceIdentifier
parameter to specify
the Brick's or Bricklet's type.
BrickletIndustrialDualAnalogInV2.
DEVICE_DISPLAY_NAME
¶This constant represents the human readable name of a Industrial Dual Analog In Bricklet 2.0.