arduino-uno-thermometer/arduino-uno-thermometer.ino

#include "application.h"

static unsigned long previousMillis;

static Application application{};

void setup() {
  application.init();
  previousMillis = millis();
}

void loop() {
  unsigned long const currentMillis = millis();
  unsigned long const deltaMillis = currentMillis - previousMillis;
  previousMillis = currentMillis;
  application.update(deltaMillis);
}