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Software / API Bindings / openHAB / API Reference and Examples / Bricklets / Distance IR Bricklet 2.0

openHAB - Distance IR Bricklet 2.0

Bemerkung

Die openHAB-Dokumentation ist nur auf Englisch verfügbar.

Warnung

The openHAB bindings are still in beta, but the development was stopped.

This is the description of the openHAB API bindings for the Distance IR Bricklet 2.0. General information and technical specifications for the Distance IR Bricklet 2.0 are summarized in its hardware description.

An installation guide for the openHAB API bindings is part of their general description.

Thing

UID:
  • tinkerforge:brickletdistanceirv2:[UID]
Required firmware version:
  • 2.0.0
Firmware update supported:
  • yes
Channels:
Actions:
Parameters:
  • Moving Average Length – Type: integer, Default: 25, Min: 1, Max: 1000
  • Sets the length of a moving averaging for the distance. Setting the length to 1 will turn the averaging off. With less averaging, there is more noise on the data. The range for the averaging is 1-1000. New data is gathered every ~10ms. With a moving average of length 1000 the resulting averaging window has a length of approximately 10s. If you want to do long term measurements the longest moving average will give the cleanest results.

  • Distance LED – Type: Choice, Default: Show Distance
  • Configures the distance LED to be either turned off, turned on, blink in heartbeat mode or show the distance (brighter = object is nearer).
  • Options: Off, On, Show Heartbeat, Show Distance

  • Status LED Configuration – Type: Choice, Default: Show Status
  • 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.
  • Options: Off, On, Show Heartbeat, Show Status

Channels

Distance

The measured distance

Type:
  • Number:Length
UID:
  • tinkerforge:brickletdistanceirv2:[UID]:BrickletDistanceIRV2Distance
Read only:
  • Yes
Unit:
  • Meter
Parameters:
  • Update Interval – Type: integer, Default: 1000, Unit: ms, Min: 0, Max: 4294967295
  • Specifies the update interval in milliseconds. A value of 0 disables automatic updates.
Analog Value

The analog value as read by a analog-to-digital converter.

This is unfiltered raw data. We made sure that the integration time of the ADC is shorter then the measurement interval of the sensor (10ms vs 16.5ms). So there is no information lost.

If you want to do your own calibration or create your own lookup table you can use this value.

Type:
  • Number:Dimensionless
UID:
  • tinkerforge:brickletdistanceirv2:[UID]:BrickletDistanceIRV2AnalogValue
Read only:
  • Yes
Range:
  • 0 to 2097151 (Step 1)
Parameters:
  • Update Interval – Type: integer, Default: 1000, Unit: ms, Min: 0, Max: 4294967295
  • Specifies the update interval in milliseconds. A value of 0 disables automatic updates.

Actions

Actions can be used in rules by creating an action object. All actions return a Map<String, Object>. Returned values can be accessed by name, sometimes the type deduction needs some hints, as shown below:

val actions = getActions("tinkerforge", "tinkerforge:brickletdistanceirv2:[UID]")
val hwVersion = actions.brickletDistanceIRV2GetIdentity().get("hardwareVersion") as short[]
logInfo("Example", "Hardware version: " + hwVersion.get(0) + "." + hwVersion.get(1) + "." + hwVersion.get(2))

Basic Actions

brickletDistanceIRV2GetDistance()
Return Map:
  • distance – Type: int, Unit: 1 mm, Range: [0 to 216 - 1]

Returns the distance measured by the sensor. Possible distance ranges are 40 to 300, 100 to 800 and 200 to 1500, depending on the selected IR sensor.

If you want to get the value periodically, it is recommended to use the Distance channel. You can set the channel configuration with the configuration of Distance.

brickletDistanceIRV2GetAnalogValue()
Return Map:
  • analogValue – Type: long, Range: [0 to 221 - 1]

Returns the analog value as read by a analog-to-digital converter.

This is unfiltered raw data. We made sure that the integration time of the ADC is shorter then the measurement interval of the sensor (10ms vs 16.5ms). So there is no information lost.

If you want to do your own calibration or create your own lookup table you can use this value.

If you want to get the value periodically, it is recommended to use the Analog Value channel. You can set the channel configuration with the configuration of Analog Value.

brickletDistanceIRV2GetMovingAverageConfiguration()
Return Map:
  • movingAverageLength – Type: int, Range: [1 to 1000], Default: 25

Returns the moving average configuration as set by the thing configuration.

brickletDistanceIRV2GetDistanceLEDConfig()
Return Map:
  • config – Type: int, Range: See constants, Default: 3

Returns the LED configuration as set by the thing configuration

The following constants are available for this function:

For config:

  • val DISTANCE_LED_CONFIG_OFF = 0
  • val DISTANCE_LED_CONFIG_ON = 1
  • val DISTANCE_LED_CONFIG_SHOW_HEARTBEAT = 2
  • val DISTANCE_LED_CONFIG_SHOW_DISTANCE = 3
brickletDistanceIRV2GetSensorType()
Return Map:
  • sensor – Type: int, Range: See constants

Returns the sensor type as set by This function is not available in openHAB. Please use Brick Viewer to change persistant device settings.

The following constants are available for this function:

For sensor:

  • val SENSOR_TYPE_2Y0A41 = 0
  • val SENSOR_TYPE_2Y0A21 = 1
  • val SENSOR_TYPE_2Y0A02 = 2

Advanced Actions

brickletDistanceIRV2GetChipTemperature()
Return Map:
  • 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.

brickletDistanceIRV2GetStatusLEDConfig()
Return Map:
  • config – Type: int, Range: See constants, Default: 3

Returns the configuration as set by the thing configuration

The following constants are available for this function:

For config:

  • val STATUS_LED_CONFIG_OFF = 0
  • val STATUS_LED_CONFIG_ON = 1
  • val STATUS_LED_CONFIG_SHOW_HEARTBEAT = 2
  • val STATUS_LED_CONFIG_SHOW_STATUS = 3
brickletDistanceIRV2GetSPITFPErrorCount()
Return Map:
  • 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.

brickletDistanceIRV2Reset()

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!

brickletDistanceIRV2GetIdentity()
Return Map:
  • 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
    • 0: major – Type: short, Range: [0 to 255]
    • 1: minor – Type: short, Range: [0 to 255]
    • 2: revision – Type: short, Range: [0 to 255]
  • firmwareVersion – Type: short[], Length: 3
    • 0: major – Type: short, Range: [0 to 255]
    • 1: minor – Type: short, Range: [0 to 255]
    • 2: 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. 

Internal Actions

brickletDistanceIRV2ReadUID()
Return Map:
  • uid – Type: long, Range: [0 to 232 - 1]

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