MATLAB/Octave - RGB LED Bricklet 2.0¶

Simple (MATLAB)¶

Download (matlab_example_simple.m)

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function matlab_example_simple()
    import com.tinkerforge.IPConnection;
    import com.tinkerforge.BrickletRGBLEDV2;

    HOST = 'localhost';
    PORT = 4223;
    UID = 'XYZ'; % Change XYZ to the UID of your RGB LED Bricklet 2.0

    ipcon = IPConnection(); % Create IP connection
    rl = handle(BrickletRGBLEDV2(UID, ipcon), 'CallbackProperties'); % Create device object

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

    % Set light blue color
    rl.setRGBValue(0, 170, 234);

    input('Press key to exit\n', 's');
    ipcon.disconnect();
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 RGB LED Bricklet 2.0

    ipcon = javaObject("com.tinkerforge.IPConnection"); % Create IP connection
    rl = javaObject("com.tinkerforge.BrickletRGBLEDV2", UID, ipcon); % Create device object

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

    % Set light blue color
    rl.setRGBValue(0, 170, 234);

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

Basic Functions¶

class BrickletRGBLEDV2(String uid, IPConnection ipcon)¶

Parameters:	uid – Type: String ipcon – Type: IPConnection
Returns:	rgbLEDV2 – Type: BrickletRGBLEDV2

Creates an object with the unique device ID uid.

In MATLAB:

import com.tinkerforge.BrickletRGBLEDV2;

rgbLEDV2 = BrickletRGBLEDV2('YOUR_DEVICE_UID', ipcon);

In Octave:

rgbLEDV2 = java_new("com.tinkerforge.BrickletRGBLEDV2", "YOUR_DEVICE_UID", ipcon);

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

void BrickletRGBLEDV2.setRGBValue(int r, int g, int b)¶

Parameters:	r – Type: int, Range: [0 to 255] g – Type: int, Range: [0 to 255] b – Type: int, Range: [0 to 255]

Sets the r, g and b values for the LED.

BrickletRGBLEDV2.RGBValue BrickletRGBLEDV2.getRGBValue()¶

Return Object:	r – Type: int, Range: [0 to 255] g – Type: int, Range: [0 to 255] b – Type: int, Range: [0 to 255]

Returns the r, g and b values of the LED as set by setRGBValue().

Advanced Functions¶

BrickletRGBLEDV2.SPITFPErrorCount BrickletRGBLEDV2.getSPITFPErrorCount()¶

Return Object:	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.

void BrickletRGBLEDV2.setStatusLEDConfig(int config)¶

Parameters:	config – Type: int, Range: See constants, Default: 3

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:

• BrickletRGBLEDV2.STATUS_LED_CONFIG_OFF = 0
• BrickletRGBLEDV2.STATUS_LED_CONFIG_ON = 1
• BrickletRGBLEDV2.STATUS_LED_CONFIG_SHOW_HEARTBEAT = 2
• BrickletRGBLEDV2.STATUS_LED_CONFIG_SHOW_STATUS = 3

int BrickletRGBLEDV2.getStatusLEDConfig()¶

Returns:	config – Type: int, Range: See constants, Default: 3

Returns the configuration as set by setStatusLEDConfig()

The following constants are available for this function:

For config:

• BrickletRGBLEDV2.STATUS_LED_CONFIG_OFF = 0
• BrickletRGBLEDV2.STATUS_LED_CONFIG_ON = 1
• BrickletRGBLEDV2.STATUS_LED_CONFIG_SHOW_HEARTBEAT = 2
• BrickletRGBLEDV2.STATUS_LED_CONFIG_SHOW_STATUS = 3

int BrickletRGBLEDV2.getChipTemperature()¶

Returns:	temperature – Type: int, Unit: 1 °C, Range: [-215 to 215 - 1]

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.

void BrickletRGBLEDV2.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!

BrickletRGBLEDV2.Identity BrickletRGBLEDV2.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 1: major – Type: short, Range: [0 to 255] 2: minor – Type: short, Range: [0 to 255] 3: revision – Type: short, Range: [0 to 255] firmwareVersion – Type: short[], Length: 3 1: major – Type: short, Range: [0 to 255] 2: minor – Type: short, Range: [0 to 255] 3: 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.

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[] BrickletRGBLEDV2.getAPIVersion()¶

Return Object:	apiVersion – Type: short[], Length: 3 1: major – Type: short, Range: [0 to 255] 2: minor – Type: short, Range: [0 to 255] 3: 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 BrickletRGBLEDV2.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 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:

• BrickletRGBLEDV2.FUNCTION_SET_RGB_VALUE = 1
• BrickletRGBLEDV2.FUNCTION_SET_WRITE_FIRMWARE_POINTER = 237
• BrickletRGBLEDV2.FUNCTION_SET_STATUS_LED_CONFIG = 239
• BrickletRGBLEDV2.FUNCTION_RESET = 243
• BrickletRGBLEDV2.FUNCTION_WRITE_UID = 248

void BrickletRGBLEDV2.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 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:

• BrickletRGBLEDV2.FUNCTION_SET_RGB_VALUE = 1
• BrickletRGBLEDV2.FUNCTION_SET_WRITE_FIRMWARE_POINTER = 237
• BrickletRGBLEDV2.FUNCTION_SET_STATUS_LED_CONFIG = 239
• BrickletRGBLEDV2.FUNCTION_RESET = 243
• BrickletRGBLEDV2.FUNCTION_WRITE_UID = 248

void BrickletRGBLEDV2.setResponseExpectedAll(boolean responseExpected)¶

Parameters:	responseExpected – Type: boolean

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

Internal Functions¶

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.

int BrickletRGBLEDV2.setBootloaderMode(int mode)¶

Parameters:	mode – Type: int, Range: See constants
Returns:	status – Type: int, 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:

• BrickletRGBLEDV2.BOOTLOADER_MODE_BOOTLOADER = 0
• BrickletRGBLEDV2.BOOTLOADER_MODE_FIRMWARE = 1
• BrickletRGBLEDV2.BOOTLOADER_MODE_BOOTLOADER_WAIT_FOR_REBOOT = 2
• BrickletRGBLEDV2.BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_REBOOT = 3
• BrickletRGBLEDV2.BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_ERASE_AND_REBOOT = 4

For status:

• BrickletRGBLEDV2.BOOTLOADER_STATUS_OK = 0
• BrickletRGBLEDV2.BOOTLOADER_STATUS_INVALID_MODE = 1
• BrickletRGBLEDV2.BOOTLOADER_STATUS_NO_CHANGE = 2
• BrickletRGBLEDV2.BOOTLOADER_STATUS_ENTRY_FUNCTION_NOT_PRESENT = 3
• BrickletRGBLEDV2.BOOTLOADER_STATUS_DEVICE_IDENTIFIER_INCORRECT = 4
• BrickletRGBLEDV2.BOOTLOADER_STATUS_CRC_MISMATCH = 5

int BrickletRGBLEDV2.getBootloaderMode()¶

Returns:	mode – Type: int, Range: See constants

Returns the current bootloader mode, see setBootloaderMode().

The following constants are available for this function:

For mode:

• BrickletRGBLEDV2.BOOTLOADER_MODE_BOOTLOADER = 0
• BrickletRGBLEDV2.BOOTLOADER_MODE_FIRMWARE = 1
• BrickletRGBLEDV2.BOOTLOADER_MODE_BOOTLOADER_WAIT_FOR_REBOOT = 2
• BrickletRGBLEDV2.BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_REBOOT = 3
• BrickletRGBLEDV2.BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_ERASE_AND_REBOOT = 4

void BrickletRGBLEDV2.setWriteFirmwarePointer(long pointer)¶

Parameters:	pointer – Type: long, Unit: 1 B, 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.

int BrickletRGBLEDV2.writeFirmware(int[] data)¶

Parameters:	data – Type: int[], Length: 64, Range: [0 to 255]
Returns:	status – Type: int, 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.

void BrickletRGBLEDV2.writeUID(long uid)¶

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.

long BrickletRGBLEDV2.readUID()¶

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.

Constants¶

int BrickletRGBLEDV2.DEVICE_IDENTIFIER¶

This constant is used to identify a RGB LED 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.

String BrickletRGBLEDV2.DEVICE_DISPLAY_NAME¶

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