mirror of https://github.com/arendst/Tasmota.git
108 lines
3.1 KiB
C
108 lines
3.1 KiB
C
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/***************************************************************************
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This is a library for the BME680 humidity, temperature & pressure sensor
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Designed specifically to work with the Adafruit BME680 Breakout
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----> http://www.adafruit.com/products/XXXX
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These sensors use I2C or SPI to communicate, 2 or 4 pins are required
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to interface.
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Adafruit invests time and resources providing this open source code,
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please support Adafruit andopen-source hardware by purchasing products
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from Adafruit!
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Written by Limor Fried & Kevin Townsend for Adafruit Industries.
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BSD license, all text above must be included in any redistribution
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***************************************************************************/
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#ifndef __BME680_H__
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#define __BME680_H__
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#if (ARDUINO >= 100)
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#include "Arduino.h"
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#else
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#include "WProgram.h"
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#endif
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#include <Wire.h>
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#include <SPI.h>
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#include <Adafruit_Sensor.h>
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#include <Wire.h>
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#include "bme680.h"
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/*=========================================================================
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I2C ADDRESS/BITS
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-----------------------------------------------------------------------*/
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#define BME680_DEFAULT_ADDRESS (0x77)
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/*=========================================================================*/
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#define BME680_DEFAULT_SPIFREQ (1000000)
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/*
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class Adafruit_BME680_Unified : public Adafruit_Sensor
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{
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public:
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Adafruit_BME680_Unified(int32_t sensorID = -1);
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bool begin(uint8_t addr = BME680_ADDRESS);
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void getTemperature(float *temp);
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void getPressure(float *pressure);
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float pressureToAltitude(float seaLevel, float atmospheric, float temp);
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float seaLevelForAltitude(float altitude, float atmospheric, float temp);
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void getEvent(sensors_event_t*);
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void getSensor(sensor_t*);
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private:
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uint8_t _i2c_addr;
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int32_t _sensorID;
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};
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*/
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/** Adafruit_BME680 Class for both I2C and SPI usage.
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* Wraps the Bosch library for Arduino usage
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*/
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class Adafruit_BME680
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{
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public:
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Adafruit_BME680(int8_t cspin = -1);
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Adafruit_BME680(int8_t cspin, int8_t mosipin, int8_t misopin, int8_t sckpin);
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bool begin(uint8_t addr = BME680_DEFAULT_ADDRESS);
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float readTemperature(void);
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float readPressure(void);
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float readHumidity(void);
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uint32_t readGas(void);
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float readAltitude(float seaLevel);
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bool setTemperatureOversampling(uint8_t os);
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bool setPressureOversampling(uint8_t os);
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bool setHumidityOversampling(uint8_t os);
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bool setIIRFilterSize(uint8_t fs);
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bool setGasHeater(uint16_t heaterTemp, uint16_t heaterTime);
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bool performReading(void);
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/// Temperature (Celsius) assigned after calling performReading()
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float temperature;
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/// Pressure (Pascals) assigned after calling performReading()
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float pressure;
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/// Humidity (RH %) assigned after calling performReading()
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float humidity;
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/// Gas resistor (ohms) assigned after calling performReading()
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float gas_resistance;
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private:
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bool _filterEnabled, _tempEnabled, _humEnabled, _presEnabled, _gasEnabled;
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uint8_t _i2caddr;
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int32_t _sensorID;
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int8_t _cs;
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uint8_t spixfer(uint8_t x);
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struct bme680_dev gas_sensor;
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};
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#endif
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