CCS811+ BME280 Multi-function Environmental Sensor Wiki - DFRobot

 /*****************CCS811**********************/
 /**
   * @brief Judge if the data can be read 
   * @return true when the reading is successful, false means it fails to read.
   */
  bool checkDataReady();

    /**
   * @brief Set environment parameter 
   * @param temperature Input temperature value, unit: centigrade, range (-40~85℃)
   * @param humidity    Input humidity value, unit: RH, range (0~100)
   */
  void setInTemHum(float temperature, float humidity);

  /**
   * @brief Measurement parameter configuration 
   * @param mode:in typedef enum{
   *              eClosed,      //Idle (Measurements are disabled in this mode)
   *              eCycle_1s,    //Constant power mode, IAQ measurement every second
   *              eCycle_10s,   //Pulse heating mode IAQ measurement every 10 seconds
   *              eCycle_60s,   //Low power pulse heating mode IAQ measurement every 60 seconds
   *              eCycle_250ms  //Constant power mode, sensor measurement every 250ms 1xx: Reserved modes (For future use)
   *          }eCycle_t;
   * @param thresh:0 for Interrupt mode operates normally; 1 for interrupt mode only asserts the nINT signal (driven low) if the new
   * @param interrupt:0 for Interrupt generation is disabled; 1 for the nINT signal is asserted (driven low) when a new sample is ready in
   */
  setMeasurementMode(eCycle_t mode, uint8_t thresh = 0, uint8_t interrupt = 0),

  /**
   * @brief Get the current carbon dioxide concentration 
   * @return current carbon dioxide concentration, unit:ppm
   */
  uint16_t  getCO2PPM();

  /**
   * @brief Get current TVOC concentration
   * @return Return current TVOC concentration, unit: ppb
   */
  uint16_t getTVOCPPB();

  /**
   *@brief get the current baseline number
   *@return a Hexadecimal number of the current baseline number
   */
  uint16_t readBaseLine();

  /**
   *@brief write a baseline number into register
   *@param a Hexadecimal number get from getBaseLine.ino
   */
  void writeBaseLine(uint16_t baseLine);


 /*****************BME280**********************/
   /**
   * @brief getTemperature Get temperature
   * @return Temprature in Celsius
   */
  float getTemperature();

  /**
   * @brief getPressure Get pressure
   * @return Pressure in pa
   */
  uint32_t getPressure();

  /**
   * @brief getHumidity Get humidity
   * @return Humidity in percent
   */
  float getHumidity();

  /**
   * @brief calAltitude Calculate altitude
   * @param seaLevelPressure Sea level pressure
   * @param pressure Pressure in pa
   * @return Altitude in meter
   */
  float calAltitude(float seaLevelPressure, uint32_t pressure);

/*!
 * @file getBaseLine.ino
 * @brief Put the module in clear air and work a few minutes, wait for baseline doing not change 
 * @n Experiment phenomenon: get
 *
 * @copyright    Copyright (c) 2010 DFRobot Co.Ltd (http://www.dfrobot.com)
 * @licence     The MIT License (MIT)
 * @author [LuoYufeng](yufeng.luo@dfrobot.com)
 * @version  V0.1
 * @date  2019-07-19
 * @get from https://www.dfrobot.com
 * @url https://github.com/DFRobot/DFRobot_CCS811
 */
#include "DFRobot_CCS811.h"


/*
 * IIC address default 0x5A, the address becomes 0x5B if the ADDR_SEL is soldered.
 */
//DFRobot_CCS811 CCS811(&Wire, /*IIC_ADDRESS=*/0x5A);
DFRobot_CCS811 CCS811;

void setup(void)
{
    Serial.begin(115200);
    /*Wait for the chip to be initialized completely, and then exit*/
    while(CCS811.begin() != 0){
        Serial.println("failed to init chip, please check if the chip connection is fine");
        delay(1000);
    }
}
void loop() {
    if(CCS811.checkDataReady() == true){
        /*!
         * @brief Set baseline
         * @return baseline in clear air
         */
        Serial.println(CCS811.readBaseLine(), HEX);

    } else {
        Serial.println("Data is not ready!");
    }
    //delay cannot be less than measurement cycle
    delay(1000);
}

/*!
 * @file readData.ino
 * @brief Read the concentration of carbon dioxide and TVOC
 * @n Experiment phenomenon: read data every 0.5s, and print it out on serial port. 
 *
 * @copyright    Copyright (c) 2010 DFRobot Co.Ltd (http://www.dfrobot.com)
 * @licence     The MIT License (MIT)
 * @author [LuoYufeng](yufeng.luo@dfrobot.com)
 * @version  V0.1
 * @date  2019-07-19
 * @get from https://www.dfrobot.com
 * @url https://github.com/DFRobot/DFRobot_CCS811
 */
#include "DFRobot_CCS811.h"

/*
 * IIC address default 0x5A, the address becomes 0x5B if the ADDR_SEL is soldered.
 */
//DFRobot_CCS811 CCS811(&Wire, /*IIC_ADDRESS=*/0x5A);
DFRobot_CCS811 CCS811;

void setup(void)
{
    Serial.begin(115200);
    /*Wait for the chip to be initialized completely, and then exit*/
    while(CCS811.begin() != 0){
        Serial.println("failed to init chip, please check if the chip connection is fine");
        delay(1000);
    }
}
void loop() {
    if(CCS811.checkDataReady() == true){
        Serial.print("CO2: ");
        Serial.print(CCS811.getCO2PPM());
        Serial.print("ppm, TVOC: ");
        Serial.print(CCS811.getTVOCPPB());
        Serial.println("ppb");

    } else {
        Serial.println("Data is not ready!");
    }
    /*!
     * @brief Set baseline
     * @param get from getBaseline.ino
     */
    CCS811.writeBaseLine(0x447B);
    //delay cannot be less than measurement cycle
    delay(1000);
}

/*!
 * @file setInterrupt.ino
 * @brief Set interrupt parameter, when CO2 concentration range changes, get an interrupt
 * @n Experiment phenomenon: read data every 1s, and print it out on serial port.
 *
 * @copyright    Copyright (c) 2010 DFRobot Co.Ltd (http://www.dfrobot.com)
 * @licence     The MIT License (MIT)
 * @author [LuoYufeng](yufeng.luo@dfrobot.com)
 * @version  V1.0
 * @date  2019-07-13
 * @get from https://www.dfrobot.com
 * @url https://github.com/DFRobot/DFRobot_Sensor
 */
#include "DFRobot_CCS811.h"

volatile  int8_t GPIO1TRIG = 0;

/*
 * IIC address default 0x5A, the address becomes 0x5B if the ADDR_SEL is soldered.
 */
//DFRobot_CCS811 CCS811(&Wire, /*IIC_ADDRESS=*/0x5A);
DFRobot_CCS811 CCS811;

void setup(void)
{
    Serial.begin(115200);
    /*wait for the chip to be initialized completely, and then exit*/
    while(CCS811.begin() != 0){
        Serial.println("failed to init chip, please check if the chip connection is fine");
        delay(1000);
    }
    attachInterrupt(0, interrupt, RISING);
    /**
     * @brief Measurement parameter configuration 
     * @param mode:in typedef enum{
     *              eClosed,      //Idle (Measurements are disabled in this mode)
     *              eCycle_1s,    //Constant power mode, IAQ measurement every second
     *              eCycle_10s,   //Pulse heating mode IAQ measurement every 10 seconds
     *              eCycle_60s,   //Low power pulse heating mode IAQ measurement every 60 seconds
     *              eCycle_250ms  //Constant power mode, sensor measurement every 250ms 1xx: Reserved modes (For future use)
     *          }eCycle_t;
     * @param thresh:0 for Interrupt mode operates normally; 1 for interrupt mode only asserts the nINT signal (driven low) if the new
     * @param interrupt:0 for Interrupt generation is disabled; 1 for the nINT signal is asserted (driven low) when a new sample is ready in
     */
    CCS811.setMeasurementMode(CCS811.eCycle_250ms, 1, 1);
    /**
     * @brief Set interrupt thresholds 
     * @param lowToMed: interrupt triggered value in range low to middle 
     * @param medToHigh: interrupt triggered value in range middle to high 
     */
    CCS811.setThresholds(1500,2500);
}
void loop() {
    if(GPIO1TRIG == 1){
        Serial.println("CO2 range has changed");
        Serial.print("CO2: ");
        Serial.print(CCS811.getCO2PPM());
        Serial.print("ppm, TVOC: ");
        Serial.print(CCS811.getTVOCPPB());
        Serial.println("ppb");
        delay(1000);
    }
    GPIO1TRIG = 0;
    Serial.print("CO2: ");
    Serial.print(CCS811.getCO2PPM());
    Serial.print("ppm, TVOC: ");
    Serial.print(CCS811.getTVOCPPB());
    Serial.println("ppb");
    CCS811.writeBaseLine(0x447B);
    delay(1000);
}


void interrupt(){
  GPIO1TRIG = 1;
}

/*!
 * raed_data_i2c.ino
 *
 * Download this demo to test read data from bme280, connect sensor through IIC interface
 * Data will print on your serial monitor
 *
 * Copyright   [DFRobot](http://www.dfrobot.com), 2016
 * Copyright   GNU Lesser General Public License
 *
 * version  V1.0
 * date  12/03/2019
 */

#include "DFRobot_BME280.h"
#include "Wire.h"

typedef DFRobot_BME280_IIC    BME;    // ******** use abbreviations instead of full names ********

BME   bme(&Wire, 0x76);   // select TwoWire peripheral and set sensor address

#define SEA_LEVEL_PRESSURE    1015.0f

// show last sensor operate status
void printLastOperateStatus(BME::eStatus_t eStatus)
{
  switch(eStatus) {
  case BME::eStatusOK:    Serial.println("everything ok"); break;
  case BME::eStatusErr:   Serial.println("unknow error"); break;
  case BME::eStatusErrDeviceNotDetected:    Serial.println("device not detected"); break;
  case BME::eStatusErrParameter:    Serial.println("parameter error"); break;
  default: Serial.println("unknow status"); break;
  }
}

void setup()
{
  Serial.begin(115200);
  bme.reset();
  Serial.println("bme read data test");
  while(bme.begin() != BME::eStatusOK) {
    Serial.println("bme begin faild");
    printLastOperateStatus(bme.lastOperateStatus);
    delay(2000);
  }
  Serial.println("bme begin success");
  delay(100);
}

void loop()
{
  float   temp = bme.getTemperature();
  uint32_t    press = bme.getPressure();
  float   alti = bme.calAltitude(SEA_LEVEL_PRESSURE, press);
  float   humi = bme.getHumidity();

  Serial.println();
  Serial.println("======== start print ========");
  Serial.print("temperature (unit Celsius): "); Serial.println(temp);
  Serial.print("pressure (unit pa):         "); Serial.println(press);
  Serial.print("altitude (unit meter):      "); Serial.println(alti);
  Serial.print("humidity (unit percent):    "); Serial.println(humi);
  Serial.println("========  end print  ========");

  delay(1000);
}