class Tinkerforge::BrickletHumidityV2

Measures relative humidity

Constants

CALLBACK_HUMIDITY

This callback is triggered periodically according to the configuration set by BrickletHumidityV2#set_humidity_callback_configuration.

The parameter is the same as BrickletHumidityV2#get_humidity.

CALLBACK_TEMPERATURE

This callback is triggered periodically according to the configuration set by BrickletHumidityV2#set_temperature_callback_configuration.

The parameter is the same as BrickletHumidityV2#get_temperature.

Public Class Methods

new(uid, ipcon) click to toggle source

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

Calls superclass method
# File lib/tinkerforge/bricklet_humidity_v2.rb, line 87
def initialize(uid, ipcon)
  super uid, ipcon, DEVICE_IDENTIFIER, DEVICE_DISPLAY_NAME

  @api_version = [2, 0, 2]

  @response_expected[FUNCTION_GET_HUMIDITY] = RESPONSE_EXPECTED_ALWAYS_TRUE
  @response_expected[FUNCTION_SET_HUMIDITY_CALLBACK_CONFIGURATION] = RESPONSE_EXPECTED_TRUE
  @response_expected[FUNCTION_GET_HUMIDITY_CALLBACK_CONFIGURATION] = RESPONSE_EXPECTED_ALWAYS_TRUE
  @response_expected[FUNCTION_GET_TEMPERATURE] = RESPONSE_EXPECTED_ALWAYS_TRUE
  @response_expected[FUNCTION_SET_TEMPERATURE_CALLBACK_CONFIGURATION] = RESPONSE_EXPECTED_TRUE
  @response_expected[FUNCTION_GET_TEMPERATURE_CALLBACK_CONFIGURATION] = RESPONSE_EXPECTED_ALWAYS_TRUE
  @response_expected[FUNCTION_SET_HEATER_CONFIGURATION] = RESPONSE_EXPECTED_FALSE
  @response_expected[FUNCTION_GET_HEATER_CONFIGURATION] = RESPONSE_EXPECTED_ALWAYS_TRUE
  @response_expected[FUNCTION_SET_MOVING_AVERAGE_CONFIGURATION] = RESPONSE_EXPECTED_FALSE
  @response_expected[FUNCTION_GET_MOVING_AVERAGE_CONFIGURATION] = RESPONSE_EXPECTED_ALWAYS_TRUE
  @response_expected[FUNCTION_SET_SAMPLES_PER_SECOND] = RESPONSE_EXPECTED_FALSE
  @response_expected[FUNCTION_GET_SAMPLES_PER_SECOND] = 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_HUMIDITY] = [10, 'S']
  @callback_formats[CALLBACK_TEMPERATURE] = [10, 's']

  @ipcon.add_device self
end

Public Instance Methods

get_bootloader_mode() click to toggle source

Returns the current bootloader mode, see BrickletHumidityV2#set_bootloader_mode.

# File lib/tinkerforge/bricklet_humidity_v2.rb, line 324
def get_bootloader_mode
  check_validity

  send_request FUNCTION_GET_BOOTLOADER_MODE, [], '', 9, 'C'
end
get_chip_temperature() click to toggle source

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.

# File lib/tinkerforge/bricklet_humidity_v2.rb, line 382
def get_chip_temperature
  check_validity

  send_request FUNCTION_GET_CHIP_TEMPERATURE, [], '', 10, 's'
end
get_heater_configuration() click to toggle source

Returns the heater configuration as set by BrickletHumidityV2#set_heater_configuration.

# File lib/tinkerforge/bricklet_humidity_v2.rb, line 232
def get_heater_configuration
  check_validity

  send_request FUNCTION_GET_HEATER_CONFIGURATION, [], '', 9, 'C'
end
get_humidity() click to toggle source

Returns the humidity measured by the sensor.

If you want to get the value periodically, it is recommended to use the CALLBACK_HUMIDITY callback. You can set the callback configuration with BrickletHumidityV2#set_humidity_callback_configuration.

# File lib/tinkerforge/bricklet_humidity_v2.rb, line 129
def get_humidity
  check_validity

  send_request FUNCTION_GET_HUMIDITY, [], '', 10, 'S'
end
get_humidity_callback_configuration() click to toggle source

Returns the callback configuration as set by BrickletHumidityV2#set_humidity_callback_configuration.

# File lib/tinkerforge/bricklet_humidity_v2.rb, line 167
def get_humidity_callback_configuration
  check_validity

  send_request FUNCTION_GET_HUMIDITY_CALLBACK_CONFIGURATION, [], '', 18, 'L ? k S S'
end
get_identity() click to toggle source

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|

# File lib/tinkerforge/bricklet_humidity_v2.rb, line 429
def get_identity
  send_request FUNCTION_GET_IDENTITY, [], '', 33, 'Z8 Z8 k C3 C3 S'
end
get_moving_average_configuration() click to toggle source

Returns the moving average configuration as set by BrickletHumidityV2#set_moving_average_configuration.

# File lib/tinkerforge/bricklet_humidity_v2.rb, line 259
def get_moving_average_configuration
  check_validity

  send_request FUNCTION_GET_MOVING_AVERAGE_CONFIGURATION, [], '', 12, 'S S'
end
get_samples_per_second() click to toggle source

Returnes the samples per second, as set by BrickletHumidityV2#set_samples_per_second.

.. versionadded

2.0.3$nbsp;(Plugin)

# File lib/tinkerforge/bricklet_humidity_v2.rb, line 285
def get_samples_per_second
  check_validity

  send_request FUNCTION_GET_SAMPLES_PER_SECOND, [], '', 9, 'C'
end
get_spitfp_error_count() click to toggle source

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.

# File lib/tinkerforge/bricklet_humidity_v2.rb, line 302
def get_spitfp_error_count
  check_validity

  send_request FUNCTION_GET_SPITFP_ERROR_COUNT, [], '', 24, 'L L L L'
end
get_status_led_config() click to toggle source

Returns the configuration as set by BrickletHumidityV2#set_status_led_config

# File lib/tinkerforge/bricklet_humidity_v2.rb, line 370
def get_status_led_config
  check_validity

  send_request FUNCTION_GET_STATUS_LED_CONFIG, [], '', 9, 'C'
end
get_temperature() click to toggle source

Returns the temperature measured by the sensor.

If you want to get the value periodically, it is recommended to use the CALLBACK_TEMPERATURE callback. You can set the callback configuration with BrickletHumidityV2#set_temperature_callback_configuration.

# File lib/tinkerforge/bricklet_humidity_v2.rb, line 179
def get_temperature
  check_validity

  send_request FUNCTION_GET_TEMPERATURE, [], '', 10, 's'
end
get_temperature_callback_configuration() click to toggle source

Returns the callback configuration as set by BrickletHumidityV2#set_temperature_callback_configuration.

# File lib/tinkerforge/bricklet_humidity_v2.rb, line 217
def get_temperature_callback_configuration
  check_validity

  send_request FUNCTION_GET_TEMPERATURE_CALLBACK_CONFIGURATION, [], '', 18, 'L ? k s s'
end
read_uid() click to toggle source

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

# File lib/tinkerforge/bricklet_humidity_v2.rb, line 413
def read_uid
  check_validity

  send_request FUNCTION_READ_UID, [], '', 12, 'L'
end
register_callback(id, &block) click to toggle source

Registers a callback with ID id to the block block.

# File lib/tinkerforge/bricklet_humidity_v2.rb, line 434
def register_callback(id, &block)
  callback = block
  @registered_callbacks[id] = callback
end
reset() click to toggle source

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!

# File lib/tinkerforge/bricklet_humidity_v2.rb, line 394
def reset
  check_validity

  send_request FUNCTION_RESET, [], '', 8, ''
end
set_bootloader_mode(mode) click to toggle source

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.

# File lib/tinkerforge/bricklet_humidity_v2.rb, line 317
def set_bootloader_mode(mode)
  check_validity

  send_request FUNCTION_SET_BOOTLOADER_MODE, [mode], 'C', 9, 'C'
end
set_heater_configuration(heater_config) click to toggle source

Enables/disables the heater. The heater can be used to dry the sensor in extremely wet conditions.

# File lib/tinkerforge/bricklet_humidity_v2.rb, line 225
def set_heater_configuration(heater_config)
  check_validity

  send_request FUNCTION_SET_HEATER_CONFIGURATION, [heater_config], 'C', 8, ''
end
set_humidity_callback_configuration(period, value_has_to_change, option, min, max) click to toggle source

The period is the period with which the CALLBACK_HUMIDITY 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_HUMIDITY 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.

# File lib/tinkerforge/bricklet_humidity_v2.rb, line 160
def set_humidity_callback_configuration(period, value_has_to_change, option, min, max)
  check_validity

  send_request FUNCTION_SET_HUMIDITY_CALLBACK_CONFIGURATION, [period, value_has_to_change, option, min, max], 'L ? k S S', 8, ''
end
set_moving_average_configuration(moving_average_length_humidity, moving_average_length_temperature) click to toggle source

Sets the length of a `moving averaging <BrickletHumidityV2#set_samples_per_second function. It configures the measurement frequency. Since high frequencies can result in self-heating of th IC, changed the default value from 20 samples per second to 1. With 1 sample per second a moving average length of 1000 would result in an averaging window of 1000 seconds!

# File lib/tinkerforge/bricklet_humidity_v2.rb, line 252
def set_moving_average_configuration(moving_average_length_humidity, moving_average_length_temperature)
  check_validity

  send_request FUNCTION_SET_MOVING_AVERAGE_CONFIGURATION, [moving_average_length_humidity, moving_average_length_temperature], 'S S', 8, ''
end
set_samples_per_second(sps) click to toggle source

Sets the samples per second that are gathered by the humidity/temperature sensor HDC1080.

We added this function since we found out that a high measurement frequency can lead to self-heating of the sensor. Which can distort the temperature measurement.

If you don't need a lot of measurements, you can use the lowest available measurement frequency of 0.1 samples per second for the least amount of self-heating.

Before version 2.0.3 the default was 20 samples per second. The new default is 1 sample per second.

.. versionadded

2.0.3$nbsp;(Plugin)

# File lib/tinkerforge/bricklet_humidity_v2.rb, line 276
def set_samples_per_second(sps)
  check_validity

  send_request FUNCTION_SET_SAMPLES_PER_SECOND, [sps], 'C', 8, ''
end
set_status_led_config(config) click to toggle source

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.

# File lib/tinkerforge/bricklet_humidity_v2.rb, line 363
def set_status_led_config(config)
  check_validity

  send_request FUNCTION_SET_STATUS_LED_CONFIG, [config], 'C', 8, ''
end
set_temperature_callback_configuration(period, value_has_to_change, option, min, max) click to toggle source

The period is the period with which the CALLBACK_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_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.

# File lib/tinkerforge/bricklet_humidity_v2.rb, line 210
def set_temperature_callback_configuration(period, value_has_to_change, option, min, max)
  check_validity

  send_request FUNCTION_SET_TEMPERATURE_CALLBACK_CONFIGURATION, [period, value_has_to_change, option, min, max], 'L ? k s s', 8, ''
end
set_write_firmware_pointer(pointer) click to toggle source

Sets the firmware pointer for BrickletHumidityV2#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.

# File lib/tinkerforge/bricklet_humidity_v2.rb, line 336
def set_write_firmware_pointer(pointer)
  check_validity

  send_request FUNCTION_SET_WRITE_FIRMWARE_POINTER, [pointer], 'L', 8, ''
end
write_firmware(data) click to toggle source

Writes 64 Bytes of firmware at the position as written by BrickletHumidityV2#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.

# File lib/tinkerforge/bricklet_humidity_v2.rb, line 350
def write_firmware(data)
  check_validity

  send_request FUNCTION_WRITE_FIRMWARE, [data], 'C64', 9, 'C'
end
write_uid(uid) click to toggle source

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.

# File lib/tinkerforge/bricklet_humidity_v2.rb, line 405
def write_uid(uid)
  check_validity

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