Visual Basic .NET - Color Bricklet 2.0

This is the description of the Visual Basic .NET API bindings for the Color Bricklet 2.0. General information and technical specifications for the Color Bricklet 2.0 are summarized in its hardware description.

An installation guide for the Visual Basic .NET API bindings is part of their general description.

Examples

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

Simple

Download (ExampleSimple.vb)

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Imports System
Imports Tinkerforge

Module ExampleSimple
    Const HOST As String = "localhost"
    Const PORT As Integer = 4223
    Const UID As String = "XYZ" ' Change XYZ to the UID of your Color Bricklet 2.0

    Sub Main()
        Dim ipcon As New IPConnection() ' Create IP connection
        Dim c As New BrickletColorV2(UID, ipcon) ' Create device object

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

        ' Get current color
        Dim r, g, b, c_ As Integer

        c.GetColor(r, g, b, c_)

        Console.WriteLine("Color [R]: " + r.ToString())
        Console.WriteLine("Color [G]: " + g.ToString())
        Console.WriteLine("Color [B]: " + b.ToString())
        Console.WriteLine("Color [C]: " + c_.ToString())

        Console.WriteLine("Press key to exit")
        Console.ReadLine()
        ipcon.Disconnect()
    End Sub
End Module

Callback

Download (ExampleCallback.vb)

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Imports System
Imports Tinkerforge

Module ExampleCallback
    Const HOST As String = "localhost"
    Const PORT As Integer = 4223
    Const UID As String = "XYZ" ' Change XYZ to the UID of your Color Bricklet 2.0

    ' Callback subroutine for color callback
    Sub ColorCB(ByVal sender As BrickletColorV2, ByVal r As Integer, ByVal g As Integer, _
                ByVal b As Integer, ByVal c As Integer)
        Console.WriteLine("Color [R]: " + r.ToString())
        Console.WriteLine("Color [G]: " + g.ToString())
        Console.WriteLine("Color [B]: " + b.ToString())
        Console.WriteLine("Color [C]: " + c.ToString())
        Console.WriteLine("")
    End Sub

    Sub Main()
        Dim ipcon As New IPConnection() ' Create IP connection
        Dim c As New BrickletColorV2(UID, ipcon) ' Create device object

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

        ' Register color callback to subroutine ColorCB
        AddHandler c.ColorCallback, AddressOf ColorCB

        ' Set period for color callback to 0.1s (100ms)
        c.SetColorCallbackConfiguration(100, False)

        Console.WriteLine("Press key to exit")
        Console.ReadLine()
        ipcon.Disconnect()
    End Sub
End Module

API

Since Visual Basic .NET does not support multiple return values directly, we use the ByRef keyword to return multiple values from a function.

All functions and procedures listed below are thread-safe.

Basic Functions

Class BrickletColorV2(ByVal uid As String, ByVal ipcon As IPConnection)

Creates an object with the unique device ID uid:

Dim colorV2 As New BrickletColorV2("YOUR_DEVICE_UID", ipcon)

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

Sub BrickletColorV2.GetColor(ByRef r As Integer, ByRef g As Integer, ByRef b As Integer, ByRef c As Integer)
Output Parameters:
  • r – Type: Integer, Range: [0 to 216 - 1]
  • g – Type: Integer, Range: [0 to 216 - 1]
  • b – Type: Integer, Range: [0 to 216 - 1]
  • c – Type: Integer, Range: [0 to 216 - 1]

Returns the measured color of the sensor. The values have a range of 0 to 65535.

The red (r), green (g), blue (b) and clear (c) colors are measured with four different photodiodes that are responsive at different wavelengths:

Chart Responsivity / Wavelength

If you want to get the color periodically, it is recommended to use the ColorCallback callback and set the period with SetColorCallbackConfiguration().

Function BrickletColorV2.GetIlluminance() As Long
Returns:
  • illuminance – Type: Long, Range: [0 to 232 - 1]

Returns the illuminance affected by the gain and integration time as set by SetConfiguration(). To get the illuminance in Lux apply this formula:

lux = illuminance * 700 / gain / integration_time

To get a correct illuminance measurement make sure that the color values themselves are not saturated. The color value (R, G or B) is saturated if it is equal to the maximum value of 65535. In that case you have to reduce the gain, see SetConfiguration().

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

Function BrickletColorV2.GetColorTemperature() As Integer
Returns:
  • colorTemperature – Type: Integer, Range: [0 to 216 - 1]

Returns the color temperature in Kelvin.

To get a correct color temperature measurement make sure that the color values themselves are not saturated. The color value (R, G or B) is saturated if it is equal to the maximum value of 65535. In that case you have to reduce the gain, see SetConfiguration().

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

Sub BrickletColorV2.SetLight(ByVal enable As Boolean)
Parameters:
  • enable – Type: Boolean

Turns the white LED on the Bricklet on/off.

Function BrickletColorV2.GetLight() As Boolean
Returns:
  • enable – Type: Boolean

Returns the value as set by SetLight().

Sub BrickletColorV2.SetConfiguration(ByVal gain As Byte, ByVal integrationTime As Byte)
Parameters:
  • gain – Type: Byte, Range: See constants
  • integrationTime – Type: Byte, Range: See constants

Sets the configuration of the sensor. Gain and integration time can be configured this way.

For configuring the gain:

  • 0: 1x Gain
  • 1: 4x Gain
  • 2: 16x Gain
  • 3: 60x Gain

For configuring the integration time:

  • 0: 2.4ms
  • 1: 24ms
  • 2: 101ms
  • 3: 154ms
  • 4: 700ms

Increasing the gain enables the sensor to detect a color from a higher distance.

The integration time provides a trade-off between conversion time and accuracy. With a longer integration time the values read will be more accurate but it will take longer to get the conversion results.

The default values are 60x gain and 154ms integration time.

The following constants are available for this function:

For gain:

  • BrickletColorV2.GAIN_1X = 0
  • BrickletColorV2.GAIN_4X = 1
  • BrickletColorV2.GAIN_16X = 2
  • BrickletColorV2.GAIN_60X = 3

For integrationTime:

  • BrickletColorV2.INTEGRATION_TIME_2MS = 0
  • BrickletColorV2.INTEGRATION_TIME_24MS = 1
  • BrickletColorV2.INTEGRATION_TIME_101MS = 2
  • BrickletColorV2.INTEGRATION_TIME_154MS = 3
  • BrickletColorV2.INTEGRATION_TIME_700MS = 4
Sub BrickletColorV2.GetConfiguration(ByRef gain As Byte, ByRef integrationTime As Byte)
Output Parameters:
  • gain – Type: Byte, Range: See constants
  • integrationTime – Type: Byte, Range: See constants

Returns the configuration as set by SetConfiguration().

The following constants are available for this function:

For gain:

  • BrickletColorV2.GAIN_1X = 0
  • BrickletColorV2.GAIN_4X = 1
  • BrickletColorV2.GAIN_16X = 2
  • BrickletColorV2.GAIN_60X = 3

For integrationTime:

  • BrickletColorV2.INTEGRATION_TIME_2MS = 0
  • BrickletColorV2.INTEGRATION_TIME_24MS = 1
  • BrickletColorV2.INTEGRATION_TIME_101MS = 2
  • BrickletColorV2.INTEGRATION_TIME_154MS = 3
  • BrickletColorV2.INTEGRATION_TIME_700MS = 4

Advanced Functions

Function BrickletColorV2.GetAPIVersion() As Byte()
Returns:
  • apiVersion – Type: Byte Array, Length: 3, Range: [0 to 255]

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.

Function BrickletColorV2.GetResponseExpected(ByVal functionId As Byte) As Boolean
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 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.

The following constants are available for this function:

For functionId:

  • BrickletColorV2.FUNCTION_SET_COLOR_CALLBACK_CONFIGURATION = 2
  • BrickletColorV2.FUNCTION_SET_ILLUMINANCE_CALLBACK_CONFIGURATION = 6
  • BrickletColorV2.FUNCTION_SET_COLOR_TEMPERATURE_CALLBACK_CONFIGURATION = 10
  • BrickletColorV2.FUNCTION_SET_LIGHT = 13
  • BrickletColorV2.FUNCTION_SET_CONFIGURATION = 15
  • BrickletColorV2.FUNCTION_SET_WRITE_FIRMWARE_POINTER = 237
  • BrickletColorV2.FUNCTION_SET_STATUS_LED_CONFIG = 239
  • BrickletColorV2.FUNCTION_RESET = 243
  • BrickletColorV2.FUNCTION_WRITE_UID = 248
Sub BrickletColorV2.SetResponseExpected(ByVal functionId As Byte, ByVal responseExpected As Boolean)
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 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 constants are available for this function:

For functionId:

  • BrickletColorV2.FUNCTION_SET_COLOR_CALLBACK_CONFIGURATION = 2
  • BrickletColorV2.FUNCTION_SET_ILLUMINANCE_CALLBACK_CONFIGURATION = 6
  • BrickletColorV2.FUNCTION_SET_COLOR_TEMPERATURE_CALLBACK_CONFIGURATION = 10
  • BrickletColorV2.FUNCTION_SET_LIGHT = 13
  • BrickletColorV2.FUNCTION_SET_CONFIGURATION = 15
  • BrickletColorV2.FUNCTION_SET_WRITE_FIRMWARE_POINTER = 237
  • BrickletColorV2.FUNCTION_SET_STATUS_LED_CONFIG = 239
  • BrickletColorV2.FUNCTION_RESET = 243
  • BrickletColorV2.FUNCTION_WRITE_UID = 248
Sub BrickletColorV2.SetResponseExpectedAll(ByVal responseExpected As Boolean)
Parameters:
  • responseExpected – Type: Boolean

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

Sub BrickletColorV2.GetSPITFPErrorCount(ByRef errorCountAckChecksum As Long, ByRef errorCountMessageChecksum As Long, ByRef errorCountFrame As Long, ByRef errorCountOverflow As Long)
Output Parameters:
  • errorCountAckChecksum – Type: Long, Range: [0 to 232 - 1]
  • errorCountMessageChecksum – Type: Long, Range: [0 to 232 - 1]
  • errorCountFrame – Type: Long, Range: [0 to 232 - 1]
  • errorCountOverflow – Type: Long, Range: [0 to 232 - 1]

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.

Function BrickletColorV2.SetBootloaderMode(ByVal mode As Byte) As Byte
Parameters:
  • mode – Type: Byte, Range: See constants
Returns:
  • status – Type: Byte, Range: See constants

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:

  • BrickletColorV2.BOOTLOADER_MODE_BOOTLOADER = 0
  • BrickletColorV2.BOOTLOADER_MODE_FIRMWARE = 1
  • BrickletColorV2.BOOTLOADER_MODE_BOOTLOADER_WAIT_FOR_REBOOT = 2
  • BrickletColorV2.BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_REBOOT = 3
  • BrickletColorV2.BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_ERASE_AND_REBOOT = 4

For status:

  • BrickletColorV2.BOOTLOADER_STATUS_OK = 0
  • BrickletColorV2.BOOTLOADER_STATUS_INVALID_MODE = 1
  • BrickletColorV2.BOOTLOADER_STATUS_NO_CHANGE = 2
  • BrickletColorV2.BOOTLOADER_STATUS_ENTRY_FUNCTION_NOT_PRESENT = 3
  • BrickletColorV2.BOOTLOADER_STATUS_DEVICE_IDENTIFIER_INCORRECT = 4
  • BrickletColorV2.BOOTLOADER_STATUS_CRC_MISMATCH = 5
Function BrickletColorV2.GetBootloaderMode() As Byte
Returns:
  • mode – Type: Byte, Range: See constants

Returns the current bootloader mode, see SetBootloaderMode().

The following constants are available for this function:

For mode:

  • BrickletColorV2.BOOTLOADER_MODE_BOOTLOADER = 0
  • BrickletColorV2.BOOTLOADER_MODE_FIRMWARE = 1
  • BrickletColorV2.BOOTLOADER_MODE_BOOTLOADER_WAIT_FOR_REBOOT = 2
  • BrickletColorV2.BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_REBOOT = 3
  • BrickletColorV2.BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_ERASE_AND_REBOOT = 4
Sub BrickletColorV2.SetWriteFirmwarePointer(ByVal pointer As Long)
Parameters:
  • pointer – Type: Long, Range: [0 to 232 - 1]

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.

Function BrickletColorV2.WriteFirmware(ByVal data() As Byte) As Byte
Parameters:
  • data – Type: Byte Array, Length: 64, Range: [0 to 255]
Returns:
  • status – Type: Byte, Range: [0 to 255]

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.

Sub BrickletColorV2.SetStatusLEDConfig(ByVal config As Byte)
Parameters:
  • config – Type: Byte, Range: See constants

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:

  • BrickletColorV2.STATUS_LED_CONFIG_OFF = 0
  • BrickletColorV2.STATUS_LED_CONFIG_ON = 1
  • BrickletColorV2.STATUS_LED_CONFIG_SHOW_HEARTBEAT = 2
  • BrickletColorV2.STATUS_LED_CONFIG_SHOW_STATUS = 3
Function BrickletColorV2.GetStatusLEDConfig() As Byte
Returns:
  • config – Type: Byte, Range: See constants

Returns the configuration as set by SetStatusLEDConfig()

The following constants are available for this function:

For config:

  • BrickletColorV2.STATUS_LED_CONFIG_OFF = 0
  • BrickletColorV2.STATUS_LED_CONFIG_ON = 1
  • BrickletColorV2.STATUS_LED_CONFIG_SHOW_HEARTBEAT = 2
  • BrickletColorV2.STATUS_LED_CONFIG_SHOW_STATUS = 3
Function BrickletColorV2.GetChipTemperature() As Short
Returns:
  • temperature – Type: Short, Range: [-215 to 215 - 1]

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.

Sub BrickletColorV2.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!

Sub BrickletColorV2.WriteUID(ByVal uid As Long)
Parameters:
  • uid – Type: Long, Range: [0 to 232 - 1]

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.

Function BrickletColorV2.ReadUID() As Long
Returns:
  • uid – Type: Long, Range: [0 to 232 - 1]

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

Sub BrickletColorV2.GetIdentity(ByRef uid As String, ByRef connectedUid As String, ByRef position As Char, ByRef hardwareVersion() As Byte, ByRef firmwareVersion() As Byte, ByRef deviceIdentifier As Integer)
Output Parameters:
  • uid – Type: String, Length: up to 8
  • connectedUid – Type: String, Length: up to 8
  • position – Type: Char
  • hardwareVersion – Type: Byte Array, Length: 3, Range: [0 to 255]
  • firmwareVersion – Type: Byte Array, Length: 3, Range: [0 to 255]
  • deviceIdentifier – Type: Integer, 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' or 'd'.

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

Callback Configuration Functions

Sub BrickletColorV2.SetColorCallbackConfiguration(ByVal period As Long, ByVal valueHasToChange As Boolean)
Parameters:
  • period – Type: Long, Unit: 1 ms, Range: [0 to 232 - 1], Default: 0
  • valueHasToChange – Type: Boolean, Default: false

The period is the period with which the ColorCallback 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.

Sub BrickletColorV2.GetColorCallbackConfiguration(ByRef period As Long, ByRef valueHasToChange As Boolean)
Output Parameters:
  • period – Type: Long, Unit: 1 ms, Range: [0 to 232 - 1], Default: 0
  • valueHasToChange – Type: Boolean, Default: false

Returns the callback configuration as set by SetColorCallbackConfiguration().

Sub BrickletColorV2.SetIlluminanceCallbackConfiguration(ByVal period As Long, ByVal valueHasToChange As Boolean, ByVal option As Char, ByVal min As Long, ByVal max As Long)
Parameters:
  • period – Type: Long, Unit: 1 ms, Range: [0 to 232 - 1], Default: 0
  • valueHasToChange – Type: Boolean, Default: false
  • option – Type: Char, Range: See constants, Default: "x"C
  • min – Type: Long, Range: [0 to 232 - 1]
  • max – Type: Long, Range: [0 to 232 - 1]

The period is the period with which the IlluminanceCallback 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 IlluminanceCallback 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:

For option:

  • BrickletColorV2.THRESHOLD_OPTION_OFF = "x"C
  • BrickletColorV2.THRESHOLD_OPTION_OUTSIDE = "o"C
  • BrickletColorV2.THRESHOLD_OPTION_INSIDE = "i"C
  • BrickletColorV2.THRESHOLD_OPTION_SMALLER = "<"C
  • BrickletColorV2.THRESHOLD_OPTION_GREATER = ">"C
Sub BrickletColorV2.GetIlluminanceCallbackConfiguration(ByRef period As Long, ByRef valueHasToChange As Boolean, ByRef option As Char, ByRef min As Long, ByRef max As Long)
Output Parameters:
  • period – Type: Long, Unit: 1 ms, Range: [0 to 232 - 1], Default: 0
  • valueHasToChange – Type: Boolean, Default: false
  • option – Type: Char, Range: See constants, Default: "x"C
  • min – Type: Long, Range: [0 to 232 - 1]
  • max – Type: Long, Range: [0 to 232 - 1]

Returns the callback configuration as set by SetIlluminanceCallbackConfiguration().

The following constants are available for this function:

For option:

  • BrickletColorV2.THRESHOLD_OPTION_OFF = "x"C
  • BrickletColorV2.THRESHOLD_OPTION_OUTSIDE = "o"C
  • BrickletColorV2.THRESHOLD_OPTION_INSIDE = "i"C
  • BrickletColorV2.THRESHOLD_OPTION_SMALLER = "<"C
  • BrickletColorV2.THRESHOLD_OPTION_GREATER = ">"C
Sub BrickletColorV2.SetColorTemperatureCallbackConfiguration(ByVal period As Long, ByVal valueHasToChange As Boolean, ByVal option As Char, ByVal min As Integer, ByVal max As Integer)
Parameters:
  • period – Type: Long, Unit: 1 ms, Range: [0 to 232 - 1], Default: 0
  • valueHasToChange – Type: Boolean, Default: false
  • option – Type: Char, Range: See constants, Default: "x"C
  • min – Type: Integer, Range: [0 to 216 - 1]
  • max – Type: Integer, Range: [0 to 216 - 1]

The period is the period with which the ColorTemperatureCallback 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 ColorTemperatureCallback 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:

For option:

  • BrickletColorV2.THRESHOLD_OPTION_OFF = "x"C
  • BrickletColorV2.THRESHOLD_OPTION_OUTSIDE = "o"C
  • BrickletColorV2.THRESHOLD_OPTION_INSIDE = "i"C
  • BrickletColorV2.THRESHOLD_OPTION_SMALLER = "<"C
  • BrickletColorV2.THRESHOLD_OPTION_GREATER = ">"C
Sub BrickletColorV2.GetColorTemperatureCallbackConfiguration(ByRef period As Long, ByRef valueHasToChange As Boolean, ByRef option As Char, ByRef min As Integer, ByRef max As Integer)
Output Parameters:
  • period – Type: Long, Unit: 1 ms, Range: [0 to 232 - 1], Default: 0
  • valueHasToChange – Type: Boolean, Default: false
  • option – Type: Char, Range: See constants, Default: "x"C
  • min – Type: Integer, Range: [0 to 216 - 1]
  • max – Type: Integer, Range: [0 to 216 - 1]

Returns the callback configuration as set by SetColorTemperatureCallbackConfiguration().

The following constants are available for this function:

For option:

  • BrickletColorV2.THRESHOLD_OPTION_OFF = "x"C
  • BrickletColorV2.THRESHOLD_OPTION_OUTSIDE = "o"C
  • BrickletColorV2.THRESHOLD_OPTION_INSIDE = "i"C
  • BrickletColorV2.THRESHOLD_OPTION_SMALLER = "<"C
  • BrickletColorV2.THRESHOLD_OPTION_GREATER = ">"C

Callbacks

Callbacks can be registered to receive time critical or recurring data from the device. The registration is done by assigning a procedure to an callback property of the device object:

Sub MyCallback(ByVal sender As BrickletColorV2, ByVal value As Short)
    Console.WriteLine("Value: {0}", value)
End Sub

AddHandler colorV2.ExampleCallback, AddressOf MyCallback

The available callback property and their type of parameters 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.

Event BrickletColorV2.ColorCallback(ByVal sender As BrickletColorV2, ByVal r As Integer, ByVal g As Integer, ByVal b As Integer, ByVal c As Integer)
Callback Parameters:
  • sender – Type: BrickletColorV2
  • r – Type: Integer, Range: [0 to 216 - 1]
  • g – Type: Integer, Range: [0 to 216 - 1]
  • b – Type: Integer, Range: [0 to 216 - 1]
  • c – Type: Integer, Range: [0 to 216 - 1]

This callback is triggered periodically with the period that is set by SetColorCallbackConfiguration(). The parameter is the color of the sensor as RGBC.

The ColorCallback callback is only triggered if the color has changed since the last triggering.

Event BrickletColorV2.IlluminanceCallback(ByVal sender As BrickletColorV2, ByVal illuminance As Long)
Callback Parameters:
  • sender – Type: BrickletColorV2
  • illuminance – Type: Long, Range: [0 to 232 - 1]

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

The parameter is the same as GetIlluminance().

Event BrickletColorV2.ColorTemperatureCallback(ByVal sender As BrickletColorV2, ByVal colorTemperature As Integer)
Callback Parameters:
  • sender – Type: BrickletColorV2
  • colorTemperature – Type: Integer, Range: [0 to 216 - 1]

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

The parameter is the same as GetColorTemperature().

Constants

Const BrickletColorV2.DEVICE_IDENTIFIER

This constant is used to identify a Color 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.

Const BrickletColorV2.DEVICE_DISPLAY_NAME

This constant represents the human readable name of a Color Bricklet 2.0.