Class: Tinkerforge::BrickletColorV2

Inherits:
Device
  • Object
show all
Defined in:
lib/tinkerforge/bricklet_color_v2.rb

Overview

Measures color (RGB value), illuminance and color temperature

Constant Summary collapse

DEVICE_IDENTIFIER =

:nodoc:

2128
DEVICE_DISPLAY_NAME =

:nodoc:

'Color Bricklet 2.0'
CALLBACK_COLOR =

This callback is triggered periodically with the period that is set by BrickletColorV2#set_color_callback_configuration. The parameter is the color of the sensor as RGBC.

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

4
CALLBACK_ILLUMINANCE =

This callback is triggered periodically according to the configuration set by BrickletColorV2#set_illuminance_callback_configuration.

The parameter is the same as BrickletColorV2#get_illuminance.

8
CALLBACK_COLOR_TEMPERATURE =

This callback is triggered periodically according to the configuration set by BrickletColorV2#set_color_temperature_callback_configuration.

The parameter is the same as BrickletColorV2#get_color_temperature.

12
FUNCTION_GET_COLOR =

:nodoc:

1
FUNCTION_SET_COLOR_CALLBACK_CONFIGURATION =

:nodoc:

2
FUNCTION_GET_COLOR_CALLBACK_CONFIGURATION =

:nodoc:

3
FUNCTION_GET_ILLUMINANCE =

:nodoc:

5
FUNCTION_SET_ILLUMINANCE_CALLBACK_CONFIGURATION =

:nodoc:

6
FUNCTION_GET_ILLUMINANCE_CALLBACK_CONFIGURATION =

:nodoc:

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FUNCTION_GET_COLOR_TEMPERATURE =

:nodoc:

9
FUNCTION_SET_COLOR_TEMPERATURE_CALLBACK_CONFIGURATION =

:nodoc:

10
FUNCTION_GET_COLOR_TEMPERATURE_CALLBACK_CONFIGURATION =

:nodoc:

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FUNCTION_SET_LIGHT =

:nodoc:

13
FUNCTION_GET_LIGHT =

:nodoc:

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FUNCTION_SET_CONFIGURATION =

:nodoc:

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FUNCTION_GET_CONFIGURATION =

:nodoc:

16
FUNCTION_GET_SPITFP_ERROR_COUNT =

:nodoc:

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FUNCTION_SET_BOOTLOADER_MODE =

:nodoc:

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FUNCTION_GET_BOOTLOADER_MODE =

:nodoc:

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FUNCTION_SET_WRITE_FIRMWARE_POINTER =

:nodoc:

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FUNCTION_WRITE_FIRMWARE =

:nodoc:

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FUNCTION_SET_STATUS_LED_CONFIG =

:nodoc:

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FUNCTION_GET_STATUS_LED_CONFIG =

:nodoc:

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FUNCTION_GET_CHIP_TEMPERATURE =

:nodoc:

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FUNCTION_RESET =

:nodoc:

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FUNCTION_WRITE_UID =

:nodoc:

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FUNCTION_READ_UID =

:nodoc:

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FUNCTION_GET_IDENTITY =

:nodoc:

255
THRESHOLD_OPTION_OFF =

:nodoc:

'x'
THRESHOLD_OPTION_OUTSIDE =

:nodoc:

'o'
THRESHOLD_OPTION_INSIDE =

:nodoc:

'i'
THRESHOLD_OPTION_SMALLER =

:nodoc:

'<'
THRESHOLD_OPTION_GREATER =

:nodoc:

'>'
GAIN_1X =

:nodoc:

0
GAIN_4X =

:nodoc:

1
GAIN_16X =

:nodoc:

2
GAIN_60X =

:nodoc:

3
INTEGRATION_TIME_2MS =

:nodoc:

0
INTEGRATION_TIME_24MS =

:nodoc:

1
INTEGRATION_TIME_101MS =

:nodoc:

2
INTEGRATION_TIME_154MS =

:nodoc:

3
INTEGRATION_TIME_700MS =

:nodoc:

4
BOOTLOADER_MODE_BOOTLOADER =

:nodoc:

0
BOOTLOADER_MODE_FIRMWARE =

:nodoc:

1
BOOTLOADER_MODE_BOOTLOADER_WAIT_FOR_REBOOT =

:nodoc:

2
BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_REBOOT =

:nodoc:

3
BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_ERASE_AND_REBOOT =

:nodoc:

4
BOOTLOADER_STATUS_OK =

:nodoc:

0
BOOTLOADER_STATUS_INVALID_MODE =

:nodoc:

1
BOOTLOADER_STATUS_NO_CHANGE =

:nodoc:

2
BOOTLOADER_STATUS_ENTRY_FUNCTION_NOT_PRESENT =

:nodoc:

3
BOOTLOADER_STATUS_DEVICE_IDENTIFIER_INCORRECT =

:nodoc:

4
BOOTLOADER_STATUS_CRC_MISMATCH =

:nodoc:

5
STATUS_LED_CONFIG_OFF =

:nodoc:

0
STATUS_LED_CONFIG_ON =

:nodoc:

1
STATUS_LED_CONFIG_SHOW_HEARTBEAT =

:nodoc:

2
STATUS_LED_CONFIG_SHOW_STATUS =

:nodoc:

3

Constants inherited from Device

Device::DEVICE_IDENTIFIER_CHECK_MATCH, Device::DEVICE_IDENTIFIER_CHECK_MISMATCH, Device::DEVICE_IDENTIFIER_CHECK_PENDING, Device::RESPONSE_EXPECTED_ALWAYS_TRUE, Device::RESPONSE_EXPECTED_FALSE, Device::RESPONSE_EXPECTED_INVALID_FUNCTION_ID, Device::RESPONSE_EXPECTED_TRUE

Instance Attribute Summary

Attributes inherited from Device

#callback_formats, #expected_response_function_id, #expected_response_sequence_number, #high_level_callbacks, #registered_callbacks, #replaced, #uid

Instance Method Summary collapse

Methods inherited from Device

#check_validity, #dequeue_response, #enqueue_response, #get_api_version, #get_response_expected, #send_request, #set_response_expected, #set_response_expected_all

Constructor Details

#initialize(uid, ipcon) ⇒ BrickletColorV2

Creates an object with the unique device ID uid and adds it to the IP Connection ipcon.



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# File 'lib/tinkerforge/bricklet_color_v2.rb', line 98

def initialize(uid, ipcon)
  super uid, ipcon, DEVICE_IDENTIFIER, DEVICE_DISPLAY_NAME

  @api_version = [2, 0, 0]

  @response_expected[FUNCTION_GET_COLOR] = RESPONSE_EXPECTED_ALWAYS_TRUE
  @response_expected[FUNCTION_SET_COLOR_CALLBACK_CONFIGURATION] = RESPONSE_EXPECTED_TRUE
  @response_expected[FUNCTION_GET_COLOR_CALLBACK_CONFIGURATION] = RESPONSE_EXPECTED_ALWAYS_TRUE
  @response_expected[FUNCTION_GET_ILLUMINANCE] = RESPONSE_EXPECTED_ALWAYS_TRUE
  @response_expected[FUNCTION_SET_ILLUMINANCE_CALLBACK_CONFIGURATION] = RESPONSE_EXPECTED_TRUE
  @response_expected[FUNCTION_GET_ILLUMINANCE_CALLBACK_CONFIGURATION] = RESPONSE_EXPECTED_ALWAYS_TRUE
  @response_expected[FUNCTION_GET_COLOR_TEMPERATURE] = RESPONSE_EXPECTED_ALWAYS_TRUE
  @response_expected[FUNCTION_SET_COLOR_TEMPERATURE_CALLBACK_CONFIGURATION] = RESPONSE_EXPECTED_TRUE
  @response_expected[FUNCTION_GET_COLOR_TEMPERATURE_CALLBACK_CONFIGURATION] = RESPONSE_EXPECTED_ALWAYS_TRUE
  @response_expected[FUNCTION_SET_LIGHT] = RESPONSE_EXPECTED_FALSE
  @response_expected[FUNCTION_GET_LIGHT] = RESPONSE_EXPECTED_ALWAYS_TRUE
  @response_expected[FUNCTION_SET_CONFIGURATION] = RESPONSE_EXPECTED_FALSE
  @response_expected[FUNCTION_GET_CONFIGURATION] = RESPONSE_EXPECTED_ALWAYS_TRUE
  @response_expected[FUNCTION_GET_SPITFP_ERROR_COUNT] = RESPONSE_EXPECTED_ALWAYS_TRUE
  @response_expected[FUNCTION_SET_BOOTLOADER_MODE] = RESPONSE_EXPECTED_ALWAYS_TRUE
  @response_expected[FUNCTION_GET_BOOTLOADER_MODE] = RESPONSE_EXPECTED_ALWAYS_TRUE
  @response_expected[FUNCTION_SET_WRITE_FIRMWARE_POINTER] = RESPONSE_EXPECTED_FALSE
  @response_expected[FUNCTION_WRITE_FIRMWARE] = RESPONSE_EXPECTED_ALWAYS_TRUE
  @response_expected[FUNCTION_SET_STATUS_LED_CONFIG] = RESPONSE_EXPECTED_FALSE
  @response_expected[FUNCTION_GET_STATUS_LED_CONFIG] = RESPONSE_EXPECTED_ALWAYS_TRUE
  @response_expected[FUNCTION_GET_CHIP_TEMPERATURE] = RESPONSE_EXPECTED_ALWAYS_TRUE
  @response_expected[FUNCTION_RESET] = RESPONSE_EXPECTED_FALSE
  @response_expected[FUNCTION_WRITE_UID] = RESPONSE_EXPECTED_FALSE
  @response_expected[FUNCTION_READ_UID] = RESPONSE_EXPECTED_ALWAYS_TRUE
  @response_expected[FUNCTION_GET_IDENTITY] = RESPONSE_EXPECTED_ALWAYS_TRUE

  @callback_formats[CALLBACK_COLOR] = [16, 'S S S S']
  @callback_formats[CALLBACK_ILLUMINANCE] = [12, 'L']
  @callback_formats[CALLBACK_COLOR_TEMPERATURE] = [10, 'S']

  @ipcon.add_device self
end

Instance Method Details

#get_bootloader_mode ⇒ Object

Returns the current bootloader mode, see BrickletColorV2#set_bootloader_mode.



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# File 'lib/tinkerforge/bricklet_color_v2.rb', line 378

def get_bootloader_mode
  check_validity

  send_request FUNCTION_GET_BOOTLOADER_MODE, [], '', 9, 'C'
end

#get_chip_temperature ⇒ Object

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.



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# File 'lib/tinkerforge/bricklet_color_v2.rb', line 436

def get_chip_temperature
  check_validity

  send_request FUNCTION_GET_CHIP_TEMPERATURE, [], '', 10, 's'
end

#get_color ⇒ Object

Returns the measured color of the sensor.

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

.. image

/Images/Bricklets/bricklet_color_wavelength_chart_600.jpg

:scale: 100 %
:alt: Chart Responsivity / Wavelength
:align: center
:target: ../../_images/Bricklets/bricklet_color_wavelength_chart_600.jpg

If you want to get the color periodically, it is recommended to use the CALLBACK_COLOR callback and set the period with BrickletColorV2#set_color_callback_configuration.



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# File 'lib/tinkerforge/bricklet_color_v2.rb', line 151

def get_color
  check_validity

  send_request FUNCTION_GET_COLOR, [], '', 16, 'S S S S'
end

#get_color_callback_configuration ⇒ Object

Returns the callback configuration as set by BrickletColorV2#set_color_callback_configuration.



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# File 'lib/tinkerforge/bricklet_color_v2.rb', line 174

def get_color_callback_configuration
  check_validity

  send_request FUNCTION_GET_COLOR_CALLBACK_CONFIGURATION, [], '', 13, 'L ?'
end

#get_color_temperature ⇒ Object

Returns the color temperature.

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 BrickletColorV2#set_configuration.

If you want to get the value periodically, it is recommended to use the CALLBACK_COLOR_TEMPERATURE callback. You can set the callback configuration with BrickletColorV2#set_color_temperature_callback_configuration.



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# File 'lib/tinkerforge/bricklet_color_v2.rb', line 249

def get_color_temperature
  check_validity

  send_request FUNCTION_GET_COLOR_TEMPERATURE, [], '', 10, 'S'
end

#get_color_temperature_callback_configuration ⇒ Object

Returns the callback configuration as set by BrickletColorV2#set_color_temperature_callback_configuration.



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# File 'lib/tinkerforge/bricklet_color_v2.rb', line 287

def get_color_temperature_callback_configuration
  check_validity

  send_request FUNCTION_GET_COLOR_TEMPERATURE_CALLBACK_CONFIGURATION, [], '', 18, 'L ? k S S'
end

#get_configuration ⇒ Object

Returns the configuration as set by BrickletColorV2#set_configuration.



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# File 'lib/tinkerforge/bricklet_color_v2.rb', line 339

def get_configuration
  check_validity

  send_request FUNCTION_GET_CONFIGURATION, [], '', 10, 'C C'
end

#get_identity ⇒ 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 :ref:‘Isolator Bricklet <isolator_bricklet>` is always at position ’z’.

The device identifier numbers can be found :ref:‘here <device_identifier>`. |device_identifier_constant|



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# File 'lib/tinkerforge/bricklet_color_v2.rb', line 483

def get_identity
  send_request FUNCTION_GET_IDENTITY, [], '', 33, 'Z8 Z8 k C3 C3 S'
end

#get_illuminance ⇒ Object

Returns the illuminance affected by the gain and integration time as

set by BrickletColorV2#set_configuration. 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 BrickletColorV2#set_configuration.

If you want to get the value periodically, it is recommended to use the CALLBACK_ILLUMINANCE callback. You can set the callback configuration with BrickletColorV2#set_illuminance_callback_configuration.



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# File 'lib/tinkerforge/bricklet_color_v2.rb', line 194

def get_illuminance
  check_validity

  send_request FUNCTION_GET_ILLUMINANCE, [], '', 12, 'L'
end

#get_illuminance_callback_configuration ⇒ Object

Returns the callback configuration as set by BrickletColorV2#set_illuminance_callback_configuration.



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# File 'lib/tinkerforge/bricklet_color_v2.rb', line 232

def get_illuminance_callback_configuration
  check_validity

  send_request FUNCTION_GET_ILLUMINANCE_CALLBACK_CONFIGURATION, [], '', 22, 'L ? k L L'
end

#get_light ⇒ Object

Returns the value as set by BrickletColorV2#set_light.



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# File 'lib/tinkerforge/bricklet_color_v2.rb', line 301

def get_light
  check_validity

  send_request FUNCTION_GET_LIGHT, [], '', 9, '?'
end

#get_spitfp_error_count ⇒ Object

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.



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# File 'lib/tinkerforge/bricklet_color_v2.rb', line 356

def get_spitfp_error_count
  check_validity

  send_request FUNCTION_GET_SPITFP_ERROR_COUNT, [], '', 24, 'L L L L'
end

#get_status_led_config ⇒ Object

Returns the configuration as set by BrickletColorV2#set_status_led_config



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# File 'lib/tinkerforge/bricklet_color_v2.rb', line 424

def get_status_led_config
  check_validity

  send_request FUNCTION_GET_STATUS_LED_CONFIG, [], '', 9, 'C'
end

#read_uid ⇒ Object

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



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# File 'lib/tinkerforge/bricklet_color_v2.rb', line 467

def read_uid
  check_validity

  send_request FUNCTION_READ_UID, [], '', 12, 'L'
end

#register_callback(id, &block) ⇒ Object

Registers a callback with ID id to the block block.



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# File 'lib/tinkerforge/bricklet_color_v2.rb', line 488

def register_callback(id, &block)
  callback = block
  @registered_callbacks[id] = callback
end

#reset ⇒ Object

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!



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# File 'lib/tinkerforge/bricklet_color_v2.rb', line 448

def reset
  check_validity

  send_request FUNCTION_RESET, [], '', 8, ''
end

#set_bootloader_mode(mode) ⇒ Object

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.



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# File 'lib/tinkerforge/bricklet_color_v2.rb', line 371

def set_bootloader_mode(mode)
  check_validity

  send_request FUNCTION_SET_BOOTLOADER_MODE, [mode], 'C', 9, 'C'
end

#set_color_callback_configuration(period, value_has_to_change) ⇒ Object

The period is the period with which the CALLBACK_COLOR 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.



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# File 'lib/tinkerforge/bricklet_color_v2.rb', line 166

def set_color_callback_configuration(period, value_has_to_change)
  check_validity

  send_request FUNCTION_SET_COLOR_CALLBACK_CONFIGURATION, [period, value_has_to_change], 'L ?', 8, ''
end

#set_color_temperature_callback_configuration(period, value_has_to_change, option, min, max) ⇒ Object

The period is the period with which the CALLBACK_COLOR_TEMPERATURE 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 CALLBACK_COLOR_TEMPERATURE 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.



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# File 'lib/tinkerforge/bricklet_color_v2.rb', line 280

def set_color_temperature_callback_configuration(period, value_has_to_change, option, min, max)
  check_validity

  send_request FUNCTION_SET_COLOR_TEMPERATURE_CALLBACK_CONFIGURATION, [period, value_has_to_change, option, min, max], 'L ? k S S', 8, ''
end

#set_configuration(gain, integration_time) ⇒ Object

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.



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# File 'lib/tinkerforge/bricklet_color_v2.rb', line 332

def set_configuration(gain, integration_time)
  check_validity

  send_request FUNCTION_SET_CONFIGURATION, [gain, integration_time], 'C C', 8, ''
end

#set_illuminance_callback_configuration(period, value_has_to_change, option, min, max) ⇒ Object

The period is the period with which the CALLBACK_ILLUMINANCE 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 CALLBACK_ILLUMINANCE 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.



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# File 'lib/tinkerforge/bricklet_color_v2.rb', line 225

def set_illuminance_callback_configuration(period, value_has_to_change, option, min, max)
  check_validity

  send_request FUNCTION_SET_ILLUMINANCE_CALLBACK_CONFIGURATION, [period, value_has_to_change, option, min, max], 'L ? k L L', 8, ''
end

#set_light(enable) ⇒ Object

Turns the white LED on the Bricklet on/off.



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# File 'lib/tinkerforge/bricklet_color_v2.rb', line 294

def set_light(enable)
  check_validity

  send_request FUNCTION_SET_LIGHT, [enable], '?', 8, ''
end

#set_status_led_config(config) ⇒ Object

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.



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# File 'lib/tinkerforge/bricklet_color_v2.rb', line 417

def set_status_led_config(config)
  check_validity

  send_request FUNCTION_SET_STATUS_LED_CONFIG, [config], 'C', 8, ''
end

#set_write_firmware_pointer(pointer) ⇒ Object

Sets the firmware pointer for BrickletColorV2#write_firmware. 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.



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# File 'lib/tinkerforge/bricklet_color_v2.rb', line 390

def set_write_firmware_pointer(pointer)
  check_validity

  send_request FUNCTION_SET_WRITE_FIRMWARE_POINTER, [pointer], 'L', 8, ''
end

#write_firmware(data) ⇒ Object

Writes 64 Bytes of firmware at the position as written by BrickletColorV2#set_write_firmware_pointer 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.



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# File 'lib/tinkerforge/bricklet_color_v2.rb', line 404

def write_firmware(data)
  check_validity

  send_request FUNCTION_WRITE_FIRMWARE, [data], 'C64', 9, 'C'
end

#write_uid(uid) ⇒ Object

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.



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# File 'lib/tinkerforge/bricklet_color_v2.rb', line 459

def write_uid(uid)
  check_validity

  send_request FUNCTION_WRITE_UID, [uid], 'L', 8, ''
end