Example Code for Arduino-Get Baseline

Hardware Preparation

• DFRduino UNO R3 (or similar) x 1
• ENS160 + BME280 Multi-function Environmental Sensor x 1
• Jumper wires

Software Preparation

• Arduino IDE
• Download and install the ENS160 Library and examples.
• Download and install the BME280 Library and examples.
  (About how to install the library?)

Wiring Diagram

Get Baseline

Burn the program to FireBeetle Board ESP32-E through Arduino IDE, open the serial port, we can see the printed.

Sensor operating status

For more details, please refer to Chapter 10 in the Chip Manual.

Sample Code

#include <DFRobot_ENS160.h>
#include "DFRobot_BME280.h"

#define SEA_LEVEL_PRESSURE    1015.0f

DFRobot_ENS160_I2C ENS160(&Wire, /*i2cAddr*/ 0x53);
typedef DFRobot_BME280_IIC    BME;    // ******** use abbreviations instead of full names ********
BME   bme(&Wire, 0x76);   // select TwoWire peripheral and set sensor address

// 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(void)
{
  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);
  // Init the sensor
  while( NO_ERR != ENS160.begin() ){
    Serial.println("Communication with device failed, please check connection");
    delay(3000);
  }

  /**
   * Set power mode
   * mode Configurable power mode:
   *   ENS160_SLEEP_MODE: DEEP SLEEP mode (low power standby)
   *   ENS160_IDLE_MODE: IDLE mode (low-power)
   *   ENS160_STANDARD_MODE: STANDARD Gas Sensing Modes
   */
  ENS160.setPWRMode(ENS160_STANDARD_MODE);

  /**
   * Users write ambient temperature and relative humidity into ENS160 for calibration and compensation of the measured gas data.
   * ambientTemp Compensate the current ambient temperature, float type, unit: C
   * relativeHumidity Compensate the current ambient temperature, float type, unit: %rH
   */
  ENS160.setTempAndHum(/*temperature=*/bme.getTemperature(), /*humidity=*/bme.getHumidity());

}

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  ========");
  /**
   * Get the sensor operating status
   * Return value: 0-Normal operation, 
   *         1-Warm-Up phase, first 3 minutes after power-on.
   *         2-Initial Start-Up phase, first full hour of operation after initial power-on. Only once in the sensor’s lifetime.
   * note: Note that the status will only be stored in the non-volatile memory after an initial 24h of continuous
   *       operation. If unpowered before conclusion of said period, the ENS160 will resume "Initial Start-up" mode
   *       after re-powering.
   */
  uint8_t Status = ENS160.getENS160Status();
  Serial.print("Sensor operating status : ");
  Serial.println(Status);
  /**
   * Get the air quality index
   * Return value: 1-Excellent, 2-Good, 3-Moderate, 4-Poor, 5-Unhealthy
   */
  uint8_t AQI = ENS160.getAQI();
  Serial.print("Air quality index : ");
  Serial.println(AQI);

  /**
   * Get TVOC concentration
   * Return value range: 0–65000, unit: ppb
   */
  uint16_t TVOC = ENS160.getTVOC();
  Serial.print("Concentration of total volatile organic compounds : ");
  Serial.print(TVOC);
  Serial.println(" ppb");

  /**
   * Get CO2 equivalent concentration calculated according to the detected data of VOCs and hydrogen (eCO2 – Equivalent CO2)
   * Return value range: 400–65000, unit: ppm
   * Five levels: Excellent(400 - 600), Good(600 - 800), Moderate(800 - 1000), 
   *               Poor(1000 - 1500), Unhealthy(> 1500)
   */
  uint16_t ECO2 = ENS160.getECO2();
  Serial.print("Carbon dioxide equivalent concentration : ");
  Serial.print(ECO2);
  Serial.println(" ppm");
  Serial.println();

  delay(1000);
}

Result