eco2-lcd.cpp

#include <DFRobot_ENS160.h>
#include "DFRobot_AHT20.h"
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x38,16,2); 

#define I2C_COMMUNICATION

#ifdef I2C_COMMUNICATION
DFRobot_ENS160_I2C ENS160(&Wire, /*I2CAddr*/ 0x53);
#else
uint8_t csPin = D3;
DFRobot_ENS160_SPI ENS160(&SPI, csPin);
#endif

DFRobot_AHT20 aht20;

float temperatura_C;
float umidade_R;

int ECO2;
int TVOC;

void setup(void) {
  Serial.begin(9600);
  lcd.init();

  lcd.print("0");  
  while (NO_ERR != ENS160.begin()) {
    Serial.println("Communication with device failed, please check connection");
    delay(3000);
  }
  Serial.println("Begin ok!");

  uint8_t status;
  while ((status = aht20.begin()) != 0) {
    Serial.print("AHT20 sensor initialization failed. error status : ");
    Serial.println(status);
    delay(1000);
  }


  ENS160.setPWRMode(ENS160_STANDARD_MODE);


  ENS160.setTempAndHum(/*temperature=*/25.0, /*humidity=*/50.0);
}

void loop() {

  ECO2 = ENS160.getECO2();
  Serial.println(ECO2);
  lcd.clear();
  lcd.print(ECO2);

  if (aht20.startMeasurementReady(/* crcEn = */ true)) {

    temperatura_C = aht20.getTemperature_C();

    umidade_R = aht20.getHumidity_RH();
  }

  ENS160.setTempAndHum(/*temperature=*/temperatura_C, /*humidity=*/umidade_R);

  delay(2000);
}