/*

*/
#include <Wire.h>
#include <RTClib.h>
#include <LiquidCrystal.h>

#define BACKLIGHT 22
#define CONTRAST  23
#define SET       10
#define PIU       9
#define MENO      8

char buffer[10];
unsigned long time = 0;
unsigned long timeSet = 0;
int  setModeTime = 2000;
const float BETA = 3950; // should match the Beta Coefficient of the thermistor
RTC_DS1307 RTC;
LiquidCrystal lcd(7, 6, 5, 4, 3, 2);


void setup () { 
  pinMode( BACKLIGHT, OUTPUT );
  pinMode( CONTRAST, OUTPUT );
  digitalWrite( BACKLIGHT, HIGH );
  analogWrite( CONTRAST, 40 );

  Wire.begin();
  RTC.begin();
  lcd.begin(16, 2);
  Serial.begin(9600);     
  if (! RTC.isrunning()) {
    Serial.println("RTC is NOT running!");
    RTC.adjust(DateTime(__DATE__, __TIME__));
  }
}

void loop () {
  switch (variabile) { 
   case label:
   // istruzioni
   break;
case label:
   // istruzioni
   break;
default: 
   // istruzioni
   break;

  lcd.clear();
  int analogValue1 = analogRead(A0);
  float celsius1 = 1 / (log(1 / (1023. / analogValue1 - 1)) / BETA + 1.0 / 298.15) - 273.15;
  lcd.setCursor(0,0);
  lcd.print( "Temp Piano 1" );
  lcd.setCursor(0,1);
  lcd.print(celsius1);
  delay(100);
  Serial.print("Temp Piano 1");
  Serial.print(celsius1);
  Serial.println(" ℃");
  delay(1000);

  lcd.clear();
  int analogValue2 = analogRead(A1);
  float celsius2 = 1 / (log(1 / (1023. / analogValue2 - 1)) / BETA + 1.0 / 298.15) - 273.15;
  lcd.setCursor(0,0);
  lcd.print( "Temp Piano 2" );
  lcd.setCursor(0,1);
  lcd.print(celsius2);
  delay(100);
  Serial.print("Temp Piano 2");
  Serial.print(celsius2);
  Serial.println(" ℃");
  delay(1000);

  lcd.clear();
  int analogValue3 = analogRead(A2);
  float celsius3 = 1 / (log(1 / (1023. / analogValue3 - 1)) / BETA + 1.0 / 298.15) - 273.15;
  lcd.setCursor(0,0);
  lcd.print( "Temp Piano terra" );
  lcd.setCursor(0,1);
  lcd.print(celsius3);
  delay(100);
  Serial.print("Temp Piano terra: ");
  Serial.print(celsius3);
  Serial.println(" ℃");
  delay(1000);

  DateTime now = RTC.now();
  lcd.clear();
  sprintf(buffer,  "%02d/%02d/%d", now.day(), now.month(), now.year());
  lcd.setCursor(0, 0);
  lcd.print( buffer );
  Serial.print("Data: ");
  Serial.println(buffer);
  char buffer[10] = "";
  
  sprintf(buffer,  "%02d:%02d:%02d", now.hour(), now.minute(), now.second());
  lcd.setCursor(0, 1);
  lcd.print( buffer );
  Serial.print("Ora: ");
  Serial.println(buffer);
  delay(2000);
}
}