openHAB - Particulate Matter Bricklet¶

Basic Actions¶

brickletParticulateMatterGetPMConcentration()¶

Return Map:	pm10 – Type: int, Unit: 1 µg/m³, Range: [0 to 216 - 1] pm25 – Type: int, Unit: 1 µg/m³, Range: [0 to 216 - 1] pm100 – Type: int, Unit: 1 µg/m³, Range: [0 to 216 - 1]

Returns the particulate matter concentration, broken down as:

• PM_1.0,
• PM_2.5 and
• PM_10.0.

If the sensor is disabled (see Sensor Enabled) then the last known good values from the sensor are returned.

If you want to get the values periodically, it is recommended to use the PM 1.0 Concentration channel. You can set the channel configuration with the thing configuration.

brickletParticulateMatterGetPMCount()¶

Return Map:	greater03um – Type: int, Unit: 10000 1/m³, Range: [0 to 216 - 1] greater05um – Type: int, Unit: 10000 1/m³, Range: [0 to 216 - 1] greater10um – Type: int, Unit: 10000 1/m³, Range: [0 to 216 - 1] greater25um – Type: int, Unit: 10000 1/m³, Range: [0 to 216 - 1] greater50um – Type: int, Unit: 10000 1/m³, Range: [0 to 216 - 1] greater100um – Type: int, Unit: 10000 1/m³, Range: [0 to 216 - 1]

Returns the number of particulates in 100 ml of air, broken down by their diameter:

• greater 0.3µm,
• greater 0.5µm,
• greater 1.0µm,
• greater 2.5µm,
• greater 5.0µm and
• greater 10.0µm.

If the sensor is disabled (see Sensor Enabled) then the last known good value from the sensor is returned.

If you want to get the values periodically, it is recommended to use the Particulates Greater 0.3µm channel. You can set the channel configuration with the thing configuration.

Advanced Actions¶

brickletParticulateMatterGetSensorInfo()¶

Return Map:	sensorVersion – Type: int, Range: [0 to 255] lastErrorCode – Type: int, Range: [0 to 255] framingErrorCount – Type: int, Range: [0 to 255] checksumErrorCount – Type: int, Range: [0 to 255]

Returns information about the sensor:

• the sensor version number,
• the last error code reported by the sensor (0 means no error) and
• the number of framing and checksum errors that occurred in the communication with the sensor.

brickletParticulateMatterSetEnable(boolean enable)¶

Parameters:	enable – Type: boolean, Default: true

Enables/Disables the fan and the laser diode of the sensors.

The sensor takes about 30 seconds after it is enabled to settle and produce stable values.

The laser diode has a lifetime of about 8000 hours. If you want to measure in an interval with a long idle time (e.g. hourly) you should turn the laser diode off between the measurements.

brickletParticulateMatterGetEnable()¶

Return Map:	enable – Type: boolean, Default: true

Returns the state of the sensor as set by Sensor Enabled.

brickletParticulateMatterGetChipTemperature()¶

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.

brickletParticulateMatterGetStatusLEDConfig()¶

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

brickletParticulateMatterGetSPITFPErrorCount()¶

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.

brickletParticulateMatterReset()¶

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!

brickletParticulateMatterGetIdentity()¶

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¶

brickletParticulateMatterReadUID()¶

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.