/*-----[ Bibliotheken einlesen )-----*/
#include <DS3232RTC.h>
#include <Time.h>
#include <EEPROM.h>
#include <Wire.h>
#define ADDR_RTCDS3231 0x68
#include <LCD.h>
#include <LiquidCrystal.h>
#include <LiquidCrystal_I2C.h>

//LiquidCrystal_I2C lcd(0x3f,20,4); // set the LCD address to 0x27 for a 20 chars and 4 line display
LiquidCrystal_I2C lcd(0x3f, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);  // Set the LCD I2C address

byte decToBcd(byte val) {
  return ( (val / 10 * 16) + (val % 10) );
}
byte bcdToDec(byte val)  {
  return ( (val / 16 * 10) + (val % 16) );
}


/*-----[ Variablen deklarieren )-----*/
const int tasterm  = 12;     // Taster Mitte
const int tastero  = 11;     // Taster oben
const int tasterl  = 10;     // Taster links  //Taster an Pin 10 für Backlight ON NEU
const int tasteru =  9;     // Taster unten
const int tasterr =  8;     // Taster rechts

int DisplaySchalter = 0;    // Variable fuer den Zustand des Display-Tasters NEU
long DisplayAus = 0;        // NEU

int pumpe1  =  7;     // Pumpe 1 Ausgang
int pumpe2  =  6;     // Pumpe 2 Ausgang
int pumpe3  =  5;     // Pumpe 3 Ausgang

int pumpschutz1 = 0;
int pumpschutz2 = 0;
int pumpschutz3 = 0;

int x = 1; int y = 0;
long pumpleistung1; long pumpleistung2; long pumpleistung3;

int pumpe1_time_h = EEPROM.read(3); int pumpe2_time_h = EEPROM.read(4); int pumpe3_time_h = EEPROM.read(5);
int pumpe1_time_m = EEPROM.read(6); int pumpe2_time_m = EEPROM.read(7); int pumpe3_time_m = EEPROM.read(8);
int pumpe1_ml = EEPROM.read(0); int pumpe2_ml = EEPROM.read(1); int pumpe3_ml = EEPROM.read(2);
int pumpe1_ml_s = EEPROM.read(9); int pumpe2_ml_s = EEPROM.read(10); int pumpe3_ml_s = EEPROM.read(11);


int Std = 0; int Min = 0; int Tag = 1; int Mon = 1; int Jahr = 2000;

char pause_hour = 0; char pause_min = 0; char pause_day = 0; char pause_month = 0;

/*-----[ Zeitmodul DS3231 einlesen und aktivieren )-----*/
void setDS3231time(int second, int minute, int hour, int ndofweek, int dday, int dmonth, int dyear)
{
  Wire.beginTransmission(ADDR_RTCDS3231);
  Wire.write(0);
  Wire.write(decToBcd(second));   // Sekunden setzen
  Wire.write(decToBcd(minute));   // Minuten setzen
  Wire.write(decToBcd(hour));     // Stunden setzen
  Wire.write(decToBcd(ndofweek)); // Wochentag setzen
  Wire.write(decToBcd(dday));     // Tag setzen
  Wire.write(decToBcd(dmonth));   // Monat setzen
  Wire.write(decToBcd(dyear));    // Jahr Setzen
  //Wire.endTransmission();
}

/*-----[ Einstellungen einlesen )-----*/
void setup(void)
{
  Serial.begin(9600);
  setSyncProvider(RTC.get);   // Funktion zum RTC Modul
  if (timeStatus() != timeSet)
    Serial.println("Zum synchronisieren mit dem RTC Modul");
  else
    Serial.println("Zeit und Datum wurden gespeichert");

  // Ausgänge festlegen
  pinMode(pumpe1, OUTPUT); digitalWrite(pumpe1, HIGH);
  pinMode(pumpe2, OUTPUT); digitalWrite(pumpe2, HIGH);
  pinMode(pumpe3, OUTPUT); digitalWrite(pumpe3, HIGH);

  // Eingänge Festlegen
  pinMode(tasterm, INPUT);
  pinMode(tastero, INPUT);
  pinMode(tasterl, INPUT);
  pinMode(tasteru, INPUT);
  pinMode(tasterr, INPUT);

  //lcd.int();              
  lcd.backlight();        // LCD Hintergrundbeleuchtung NEU
  lcd.begin(20, 4);        // LCD Inizialisieren

  /*-----[ Bildschirm aufbauen )-----*/
  lcd.setCursor(0, 1);
  lcd.print("-   Arduino   -");
  lcd.setCursor(2, 2);
  lcd.print("Aqua Dosierpumpe");
  lcd.setCursor(0, 3);
  lcd.print(" ~ Setup      o Info");

  DisplayAus = now() + 30;    // NEU
  pinMode(tasterl, INPUT);    // Port definieren NEU
}

void loop() {
if (hour() < 10) { // wenn kleiner 10 schreibe eine 0 davor
  lcd.setCursor(0, 0); lcd.print("0"); pause_hour = 1;
}
else pause_hour = 0;

if (minute() < 10) { // wenn kleiner 10 schreibe eine 0 davor
  lcd.setCursor(3, 0); lcd.print("0"); pause_min = 4;
}
else pause_min = 3;

if (day() < 10) { // wenn kleiner 10 schreibe eine 0 davor
  lcd.setCursor(10, 0); lcd.print("0"); pause_day = 11;
}
else pause_day = 10;

if (month() < 10) { // wenn kleiner 10 schreibe eine 0 davor
  lcd.setCursor(13, 0); lcd.print("0"); pause_month = 14;
}
else pause_month = 13;
lcd.setCursor(5, 0); lcd.print(" ");
lcd.setCursor(pause_hour, 0); //Start at character 4 on line 0
lcd.print(hour()); lcd.print(":");
lcd.setCursor(pause_min, 0); lcd.print(minute());
lcd.setCursor(pause_day, 0); lcd.print(day()); lcd.print(".");
lcd.setCursor(pause_month, 0); lcd.print(month()); lcd.print("."); lcd.print(year());

if (digitalRead(tasterr) == HIGH)hauptmenue(1);
if (digitalRead(tasterm) == HIGH)uebersicht(1) ;

DisplaySchalter = digitalRead(tasterl);     //NEU
  if (DisplaySchalter == HIGH) {             //NEU
  DisplayAus = now() + 30;                 //NEU
  }                                        //NEU
if (now() > DisplayAus) { lcd.noBacklight(); } else { lcd.backlight(); }   //NEU