sgp40: Driver for SGP40 Indoor Air Quality Sensor for VOC Measurements

struct VocAlgorithmParams

#include <sensirion_voc_algorithm.h>

Struct to hold all the states of the VOC algorithm.

Public Members

fix16_t mVoc_Index_Offset

fix16_t mTau_Mean_Variance_Hours

fix16_t mGating_Max_Duration_Minutes

fix16_t mSraw_Std_Initial

fix16_t mUptime

fix16_t mSraw

fix16_t mVoc_Index

fix16_t m_Mean_Variance_Estimator__Gating_Max_Duration_Minutes

bool m_Mean_Variance_Estimator___Initialized

fix16_t m_Mean_Variance_Estimator___Mean

fix16_t m_Mean_Variance_Estimator___Sraw_Offset

fix16_t m_Mean_Variance_Estimator___Std

fix16_t m_Mean_Variance_Estimator___Gamma

fix16_t m_Mean_Variance_Estimator___Gamma_Initial_Mean

fix16_t m_Mean_Variance_Estimator___Gamma_Initial_Variance

fix16_t m_Mean_Variance_Estimator__Gamma_Mean

fix16_t m_Mean_Variance_Estimator__Gamma_Variance

fix16_t m_Mean_Variance_Estimator___Uptime_Gamma

fix16_t m_Mean_Variance_Estimator___Uptime_Gating

fix16_t m_Mean_Variance_Estimator___Gating_Duration_Minutes

fix16_t m_Mean_Variance_Estimator___Sigmoid__L

fix16_t m_Mean_Variance_Estimator___Sigmoid__K

fix16_t m_Mean_Variance_Estimator___Sigmoid__X0

fix16_t m_Mox_Model__Sraw_Std

fix16_t m_Mox_Model__Sraw_Mean

fix16_t m_Sigmoid_Scaled__Offset

fix16_t m_Adaptive_Lowpass__A1

fix16_t m_Adaptive_Lowpass__A2

bool m_Adaptive_Lowpass___Initialized

fix16_t m_Adaptive_Lowpass___X1

fix16_t m_Adaptive_Lowpass___X2

fix16_t m_Adaptive_Lowpass___X3

struct sgp40_t

#include <sgp40.h>

Device descriptor.

Public Members

i2c_dev_t i2c_dev

uint16_t serial[3]

uint16_t featureset

VocAlgorithmParams voc