indoor-atmosphere.ino

#include <GyverButton.h>
#include <GyverBME280.h>
#include <SoftwareSerial.h>
#include <microLiquidCrystal_I2C.h>


//Screen
LiquidCrystal_I2C lcd(0x27, 16, 2);
bool backlight_on = false;

//BME
GyverBME280 bme;

//MHZ-19 B
SoftwareSerial swSerial(A0, A1); // RX, TX

//button
GButton but(3);

unsigned int ppm = 0, temp = 0, humid = 0, pres = 0, lastCheck = 0;
unsigned int lastValues[4] = {0, 0, 0, 0};

void setup() {

  //Screens
  connectLCD();

  //BME
  connectBME();

  //MHZ-19B
  //connectMhz19b(0);

  pinMode(LED_BUILTIN, OUTPUT);
}


void loop() {

  but.tick();
  if (but.isPress()) {
    toggleBacklight();
  }


  if ((millis() / 1000) - lastCheck > 15 || lastCheck == 0) {

    lastCheck = millis() / 1000;

    blinkBuiltin();

    bme.oneMeasurement(); // BME goes to sleep after measuring when in Forced mode
    temp = round(bme.readTemperature());
    humid = round(bme.readHumidity());
    pres = round(pressureToMmHg(bme.readPressure()));

    //ppm = measureCO2();

    if (temp != lastValues[0] || humid != lastValues[1] || pres != lastValues[2] || ppm != lastValues[3]) {

      lastValues[0] = temp;
      lastValues[1] = humid;
      lastValues[2] = pres;
      lastValues[3] = ppm;

      printValues(temp, humid, pres, ppm);
    }
  }
}

void blinkBuiltin() {
  digitalWrite(LED_BUILTIN, HIGH);
  delay(100);
  digitalWrite(LED_BUILTIN, LOW);
}