BoschBME280.h file
Contains the BoschBME280 sensor subclass and the variable subclasses BoschBME280_
- Reference
-
Detailed Descriptions
These are used for the Bosch BME280 digital pressure and humidity sensor.
This depends on the Adafruit BME280 library.
Classes
- class BoschBME280
- The Sensor sub-class for the Bosch BME280.
- class BoschBME280_Temp
- The Variable sub-class used for the temperature output from a Bosch BME280.
- class BoschBME280_Humidity
- The Variable sub-class used for the relative humidity output from a Bosch BME280.
- class BoschBME280_Pressure
- The Variable sub-class used for the atmospheric pressure output from a Bosch BME280.
- class BoschBME280_Altitude
- The Variable sub-class used for the altitude calculated from the measurements made by a Bosch BME280.
Defines
- #define BME280_NUM_VARIABLES = 4
- Sensor::
_numReturnedValues; the BME280 can report 4 values. - #define BME280_INC_CALC_VARIABLES = 1
- Sensor::
_incCalcValues; altitude is calculted within the Adafruit library. - #define SEALEVELPRESSURE_HPA = (1013.25)
- The atmospheric pressure at sea level.
Sensor Timing
The sensor timing for a Bosch BME280
- #define BME280_WARM_UP_TIME_MS = 100
- Sensor::
_warmUpTime_ms; BME280 warms up in 100ms. - #define BME280_STABILIZATION_TIME_MS = 4000
- Sensor::
_stabilizationTime_ms; BME280 is stable after 4000ms. - #define BME280_MEASUREMENT_TIME_MS = 1100
- Sensor::
_measurementTime_ms; BME280 takes 1100ms to complete a measurement.
Temperature
The temperature variable from a Bosch BME280
- Range is -40°C to +85°C
- Accuracy is ±0.5°C
Construct a new BoschBME280_
BoschBME280_Temp(BoschBME280* parentSense,
const char* uuid = "",
const char* varCode = BME280_
Parameters
parentSense
The parent BoschBME280 providing the result values.
uuid
A universally unique identifier (UUID or GUID) for the variable; optional with the default value of an empty string.
varCode
A short code to help identify the variable in files; optional with a default value of "BoschBME280Temp".
- #define BME280_TEMP_RESOLUTION = 2
- Decimals places in string representation; temperature should have 2 - resolution is 0.01°C.
- #define BME280_TEMP_VAR_NUM = 0
- Sensor variable number; temperature is stored in sensorValues[0].
- #define BME280_TEMP_VAR_NAME = "temperature"
- Variable name in ODM2 controlled vocabulary; "temperature".
- #define BME280_TEMP_UNIT_NAME = "degreeCelsius"
- Variable unit name in ODM2 controlled vocabulary; "degreeCelsius" (°C)
- #define BME280_TEMP_DEFAULT_CODE = "BoschBME280Temp"
- Default variable short code; "BoschBME280Temp".
Humidity
The humidity variable from a Bosch BME280
Construct a new BoschBME280_
BoschBME280_Humidity(BoschBME280* parentSense,
const char* uuid = "",
const char* varCode = BME280_
Parameters
parentSense
The parent BoschBME280 providing the result values.
uuid
A universally unique identifier (UUID or GUID) for the variable; optional with the default value of an empty string.
varCode
A short code to help identify the variable in files; optional with a default value of "BoschBME280Humidity".
- #define BME280_HUMIDITY_RESOLUTION = 3
- Decimals places in string representation; humidity should have 3- resolution is 0.008 % RH (16 bit).
- #define BME280_HUMIDITY_VAR_NUM = 1
- Sensor variable number; humidity is stored in sensorValues[1].
- #define BME280_HUMIDITY_VAR_NAME = "relativeHumidity"
- Variable name in ODM2 controlled vocabulary; "relativeHumidity".
- #define BME280_HUMIDITY_UNIT_NAME = "percent"
- Variable unit name in ODM2 controlled vocabulary; "percent" - percent relative humidity (% RH)
- #define BME280_HUMIDITY_DEFAULT_CODE = "BoschBME280Humidity"
- Default variable short code; "BoschBME280Humidity".
Barometric Pressure
The barometric pressure variable from a Bosch BME280
- Range is 300 to 1100 hPa
- Absolute accuracy is ±1 hPa
- Relative accuracy is ±0.12 hPa
Construct a new BoschBME280_
BoschBME280_Pressure(BoschBME280* parentSense,
const char* uuid = "",
const char* varCode = BME280_
Parameters
parentSense
The parent BoschBME280 providing the result values.
uuid
A universally unique identifier (UUID or GUID) for the variable; optional with the default value of an empty string.
varCode
A short code to help identify the variable in files; optional with a default value of "BoschBME280Pressure".
- #define BME280_PRESSURE_RESOLUTION = 2
- Decimals places in string representation; barometric pressure should have 2.
- #define BME280_PRESSURE_VAR_NUM = 2
- Sensor variable number; pressure is stored in sensorValues[2].
- #define BME280_PRESSURE_VAR_NAME = "barometricPressure"
- Variable name in ODM2 controlled vocabulary; "barometricPressure".
- #define BME280_PRESSURE_UNIT_NAME = "pascal"
- Variable unit name in ODM2 controlled vocabulary; "pascal" (Pa)
- #define BME280_PRESSURE_DEFAULT_CODE = "BoschBME280Pressure"
- Default variable short code; "BoschBME280Pressure".
Altitude
The altitude variable from a Bosch BME280
Construct a new BoschBME280_
BoschBME280_Altitude(BoschBME280* parentSense,
const char* uuid = "",
const char* varCode = BME280_
Parameters
parentSense
The parent BoschBME280 providing the result values.
uuid
A universally unique identifier (UUID or GUID) for the variable; optional with the default value of an empty string.
varCode
A short code to help identify the variable in files; optional with a default value of "BoschBME280Altitude".
- #define BME280_ALTITUDE_RESOLUTION = 0
- Decimals places in string representation; altitude should have 0 - resolution is 1m.
- #define BME280_ALTITUDE_VAR_NUM = 3
- Sensor variable number; altitude is stored in sensorValues[3].
- #define BME280_ALTITUDE_VAR_NAME = "heightAboveSeaFloor"
- Variable name in ODM2 controlled vocabulary; "heightAboveSeaFloor".
- #define BME280_ALTITUDE_UNIT_NAME = "meter"
- Variable unit name in ODM2 controlled vocabulary; "meter".
- #define BME280_ALTITUDE_DEFAULT_CODE = "BoschBME280Altitude"
- Default variable short code; "BoschBME280Altitude".