bme680: Driver for BME680 digital environmental sensor

struct bme680_values_fixed_t

#include <bme680.h>

Fixed point sensor values (fixed THPG values)

Public Members

int16_t temperature

temperature in degree C * 100 (Invalid value INT16_MIN)

uint32_t pressure

barometric pressure in Pascal (Invalid value 0)

uint32_t humidity

relative humidity in % * 1000 (Invalid value 0)

uint32_t gas_resistance

gas resistance in Ohm (Invalid value 0)

struct bme680_values_float_t

#include <bme680.h>

Floating point sensor values (real THPG values)

Public Members

float temperature

temperature in degree C (Invalid value -327.68)

float pressure

barometric pressure in hPascal (Invalid value 0.0)

float humidity

relative humidity in % (Invalid value 0.0)

float gas_resistance

gas resistance in Ohm (Invalid value 0.0)

struct bme680_settings_t

#include <bme680.h>

Sensor parameters that configure the TPHG measurement cycle.

T - temperature measurement P - pressure measurement H - humidity measurement G - gas measurement

Public Members

bme680_oversampling_rate_t osr_temperature

T oversampling rate (default BME680_OSR_1X)

bme680_oversampling_rate_t osr_pressure

P oversampling rate (default BME680_OSR_1X)

bme680_oversampling_rate_t osr_humidity

H oversampling rate (default BME680_OSR_1X)

bme680_filter_size_t filter_size

IIR filter size (default BME680_IIR_SIZE_3)

int8_t heater_profile

Heater profile used (default 0)

uint16_t heater_temperature[10]

Heater temperature for G (default 320)

uint16_t heater_duration[10]

Heater duration for G (default 150)

int8_t ambient_temperature

Ambient temperature for G (default 25)

struct bme680_calib_data_t

#include <bme680.h>

Data structure for calibration parameters.

These calibration parameters are used in compensation algorithms to convert raw sensor data to measurement results.

Public Members

uint16_t par_t1

calibration data for temperature compensation

int16_t par_t2

int8_t par_t3

uint16_t par_p1

calibration data for pressure compensation

int16_t par_p2

int8_t par_p3

int16_t par_p4

int16_t par_p5

int8_t par_p7

int8_t par_p6

int16_t par_p8

int16_t par_p9

uint8_t par_p10

uint16_t par_h1

calibration data for humidity compensation

uint16_t par_h2

int8_t par_h3

int8_t par_h4

int8_t par_h5

uint8_t par_h6

int8_t par_h7

int8_t par_gh1

calibration data for gas compensation

int16_t par_gh2

int8_t par_gh3

int32_t t_fine

temperature correction factor for P and G

uint8_t res_heat_range

int8_t res_heat_val

int8_t range_sw_err

struct bme680_t

#include <bme680.h>

BME680 sensor device data structure type.

Public Members

i2c_dev_t i2c_dev

I2C device descriptor.

bool meas_started

Indicates whether measurement started.

uint8_t meas_status

Last sensor status (for internal use only)

bme680_settings_t settings

Sensor settings.

bme680_calib_data_t calib_data

Calibration data of the sensor.