mirror of https://github.com/arendst/Tasmota.git
81 lines
2.7 KiB
C++
81 lines
2.7 KiB
C++
/*!
|
|
* @file Adafruit_SGP30.h
|
|
*
|
|
* This is the documentation for Adafruit's SGP30 driver for the
|
|
* Arduino platform. It is designed specifically to work with the
|
|
* Adafruit SGP30 breakout: http://www.adafruit.com/products/3709
|
|
*
|
|
* These sensors use I2C to communicate, 2 pins (SCL+SDA) are required
|
|
* to interface with the breakout.
|
|
*
|
|
* Adafruit invests time and resources providing this open source code,
|
|
* please support Adafruit and open-source hardware by purchasing
|
|
* products from Adafruit!
|
|
*
|
|
* Written by Ladyada for Adafruit Industries.
|
|
*
|
|
* BSD license, all text here must be included in any redistribution.
|
|
*
|
|
*/
|
|
|
|
#include "Arduino.h"
|
|
#include <Wire.h>
|
|
|
|
// the i2c address
|
|
#define SGP30_I2CADDR_DEFAULT 0x58 ///< SGP30 has only one I2C address
|
|
|
|
// commands and constants
|
|
#define SGP30_FEATURESET 0x0020 ///< The required set for this library
|
|
#define SGP30_CRC8_POLYNOMIAL 0x31 ///< Seed for SGP30's CRC polynomial
|
|
#define SGP30_CRC8_INIT 0xFF ///< Init value for CRC
|
|
#define SGP30_WORD_LEN 2 ///< 2 bytes per word
|
|
|
|
/*!
|
|
* @brief Class that stores state and functions for interacting with
|
|
* SGP30 Gas Sensor
|
|
*/
|
|
class Adafruit_SGP30 {
|
|
public:
|
|
Adafruit_SGP30();
|
|
boolean begin(TwoWire *theWire = &Wire, boolean initSensor = true);
|
|
boolean softReset();
|
|
boolean IAQinit();
|
|
boolean IAQmeasure();
|
|
boolean IAQmeasureRaw();
|
|
|
|
boolean getIAQBaseline(uint16_t *eco2_base, uint16_t *tvoc_base);
|
|
boolean setIAQBaseline(uint16_t eco2_base, uint16_t tvoc_base);
|
|
boolean setHumidity(uint32_t absolute_humidity);
|
|
|
|
/** The last measurement of the IAQ-calculated Total Volatile Organic
|
|
* Compounds in ppb. This value is set when you call {@link IAQmeasure()} **/
|
|
uint16_t TVOC;
|
|
|
|
/** The last measurement of the IAQ-calculated equivalent CO2 in ppm. This
|
|
* value is set when you call {@link IAQmeasure()} **/
|
|
uint16_t eCO2;
|
|
|
|
/** The last measurement of the IAQ-calculated equivalent CO2 in ppm. This
|
|
* value is set when you call {@link IAQmeasureRaw()} **/
|
|
uint16_t rawH2;
|
|
|
|
/** The last measurement of the IAQ-calculated equivalent CO2 in ppm. This
|
|
* value is set when you call {@link IAQmeasureRaw()} **/
|
|
uint16_t rawEthanol;
|
|
|
|
/** The 48-bit serial number, this value is set when you call {@link begin()}
|
|
* **/
|
|
uint16_t serialnumber[3];
|
|
|
|
private:
|
|
TwoWire *_i2c;
|
|
uint8_t _i2caddr;
|
|
|
|
void write(uint8_t address, uint8_t *data, uint8_t n);
|
|
void read(uint8_t address, uint8_t *data, uint8_t n);
|
|
boolean readWordFromCommand(uint8_t command[], uint8_t commandLength,
|
|
uint16_t delay, uint16_t *readdata = NULL,
|
|
uint8_t readlen = 0);
|
|
uint8_t generateCRC(uint8_t data[], uint8_t datalen);
|
|
};
|