#include "DHT.h" //DHT Bibliothek laden
#include <EEPROM.h>
#define DHTTYPE DHT22
//DHT11 HW: Mit Blick auf die Vorderseite des DHT11 wird der linke
// Kontakt mit Pin 3,
// der mittlere mit 5V und der rechte mit GND 
// am Mikrocontroller verbunden.  
 struct  {
    int Tag; 
    int Zeit;
    float Temperature;
    float Humidity;
  } Data;
int DHTPIN = 3;  
DHT DhtSensor (DHTPIN, DHTTYPE);
int currentTime = 0;
int currentDay = 1;
int Test = 0; // 1: Testsimulation ; 0 Wetterstation
int ZeitV = 10;
float deltaT , deltaH;
int t,h;
float T, H;
int buttonPin = 4;

void setup() {
  pinMode(buttonPin, INPUT_PULLUP); 
  // Use internal pull-up resistor
  DhtSensor.begin(); 
  Serial.begin(9600); 
  /*Serial.print("Tag Zeit");
  Serial.print(" ; ");
  Serial.print("Temperatur");
  Serial.print(" ; ");
  Serial.println("Luftfeuchtigkeit");*/



  for (int i=0; i < 672; i= i+2){
   Serial.print (i);
   Serial.print (" Temp ");
   T = EEPROM.get(i,t)/100;
   Serial.println (T);
   i=i+2;
   Serial.print (i);
   Serial.print (" Luftfeuchtigkeit ");
   H = EEPROM.get(i,h)/100;
   Serial.println (H);
  }
}

void loop() {
  if (Test ==1){
    if ( currentDay <= 7 ) {
      deltaT = 2*sin(millis()*2*PI/(24*ZeitV));
      deltaH = 20*sin (millis()*2*PI/(24*ZeitV)+PI);
      Data.Temperature = DhtSensor.readTemperature() + deltaT ; 
      // n. Mal (random (0,21)-10)/10 am Tagesende addieren
      Data.Tag = currentDay;
      Data.Zeit = currentTime;
      Data.Humidity = DhtSensor.readHumidity() + deltaH;
      Serial.print("T");
      Serial.print(Data.Tag);
      Serial.print(" ");
      Serial.print(Data.Zeit);
      Serial.print("h");
      Serial.print(" ; ");
      Serial.print(Data.Temperature);
      Serial.print(" ; ");
      Serial.print(Data.Humidity);
      Serial.println("%");
      currentTime ++;
      if (currentTime>=24) { 
       currentTime =0;
       currentDay ++;
       if (currentDay == 8) {
          Serial.println (" Messung beendet : 7 Tagen");
       }
      }
    }
  }
  else {
    while (digitalRead(buttonPin) == HIGH) 
    {}
    for (int pos=0 ; pos < 672; pos = pos+2){
      t = DhtSensor.readTemperature()*100;
      h = DhtSensor.readHumidity()*100;
      EEPROM.put (pos, t);
      pos = pos+2;
      EEPROM.put (pos, h);
      //delay (3600000);
    }
   //Serial.println("Wetterstation : Code nicht fertig");
  }
 delay (ZeitV); // dann wieder 5 Sek.
}