/*
Example 7.4
Digital LCD clock
tronixstuff.com/tutorials
based on code by Maurice Ribble
17-4-2008 - http://www.glacialwanderer.com/hobbyrobotics
*/
#include <Keypad.h>
#include "Wire.h"
#define DS1307_I2C_ADDRESS 0x68
#include <LiquidCrystal.h> // we need this library for the LCD commands
LiquidCrystal lcd(10,11,12,9,8,7,6);
/* Ot tuk e za keypad*/
const byte ROWS = 4; //four rows
const byte COLS = 3; //three columns
char keys[ROWS][COLS] = {
  {'1','2','3'},
  {'4','5','6'},
  {'7','8','9'},
  {'#','0','*'}
};
byte rowPins[ROWS] = { 3, 2, 1, 0}; //connect to the row pinouts of the keypad
byte colPins[COLS] = { 6, 5, 4}; //connect to the column pinouts of the keypad

Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );
/* do tuk e za keypad*/
int sensorPin = 0;
// Convert normal decimal numbers to binary coded decimal
byte decToBcd(byte val)
{
return ( (val/10*16) + (val%10) );
}
// Convert binary coded decimal to normal decimal numbers
byte bcdToDec(byte val)
{
return ( (val/16*10) + (val%16) );
}
// 1) Sets the date and time on the ds1307
// 2) Starts the clock
// 3) Sets hour mode to 24 hour clock
// Assumes you're passing in valid numbers
void setDateDs1307(byte second, // 0-59
byte minute, // 0-59
byte hour, // 1-23
byte dayOfWeek, // 1-7
byte dayOfMonth, // 1-28/29/30/31
byte month, // 1-12
byte year) // 0-99
{
Wire.beginTransmission(DS1307_I2C_ADDRESS);
Wire.send(0);
Wire.send(decToBcd(second)); // 0 to bit 7 starts the clock
Wire.send(decToBcd(minute));
Wire.send(decToBcd(hour));
Wire.send(decToBcd(dayOfWeek));
Wire.send(decToBcd(dayOfMonth));
Wire.send(decToBcd(month));
Wire.send(decToBcd(year));
Wire.send(0x10); // sends 0x10 (hex) 00010000 (binary) to control register - turns on square wave
Wire.endTransmission();
}
// Gets the date and time from the ds1307
void getDateDs1307(byte *second,
byte *minute,
byte *hour,
byte *dayOfWeek,
byte *dayOfMonth,
byte *month,
byte *year)
{
// Reset the register pointer
Wire.beginTransmission(DS1307_I2C_ADDRESS);
Wire.send(0);
Wire.endTransmission();
Wire.requestFrom(DS1307_I2C_ADDRESS, 7);
// A few of these need masks because certain bits are control bits
*second = bcdToDec(Wire.receive() & 0x7f);
*minute = bcdToDec(Wire.receive());
*hour = bcdToDec(Wire.receive() & 0x3f); // Need to change this if 12 hour am/pm

*dayOfWeek = bcdToDec(Wire.receive());
*dayOfMonth = bcdToDec(Wire.receive());
*month = bcdToDec(Wire.receive());
*year = bcdToDec(Wire.receive());
}
void setup()
{
byte second, minute, hour, dayOfWeek, dayOfMonth, month, year;
Wire.begin();
// Change these values to what you want to set your clock to.
// You probably only want to set your clock once and then remove
// the setDateDs1307 call.
second = 0;
minute = 23;
hour = 23;
dayOfWeek = 4;
dayOfMonth = 19;
month = 5;
year = 10;
// setDateDs1307(second, minute, hour, dayOfWeek, dayOfMonth, month, year);
lcd.begin(16, 2); // tells Arduino the LCD dimensions
lcd.setCursor(0,0);
lcd.print("tronixstuff.com"); // print text and move cursor to start of next line
lcd.setCursor(0,1);
lcd.print("* example 7.4 * ");
delay(5000);
lcd.clear(); // clear LCD screen
}
void loop()
{
/* char key = keypad.getKey(); 
 if (key != NO_KEY){
   int h_counter = 1;
   int m_counter = 1;
   int s_counter = 1;
 
    switch (key){
      case '#':
      lcd.clear();
      lcd.print("Hour:");
      delay(1000);
     
     switch (keypad.getState()) {
       case PRESSED: {
      h_counter++;
      key = keypad.getKey();
      int h_deseti = key;
      lcd.print(h_deseti);
      delay(1000);
      key = keypad.getKey();
      int h_edinici = key;
      lcd.print(h_edinici); 
      break; }
   
      hour = h_deseti*10 + h_edinici; 
      
    }
  }
 
 */
 
 
byte second, minute, hour, dayOfWeek, dayOfMonth, month, year;
getDateDs1307(&second, &minute, &hour, &dayOfWeek, &dayOfMonth, &month, &year);
int reading = analogRead(sensorPin);
float voltage = reading * 5.0 / 1024; 
float temperatureC = (voltage - 0.5) * 100 ;
lcd.clear(); // clear LCD screen
lcd.setCursor(0,0);
lcd.print(" ");
lcd.print(hour, DEC);
lcd.print(":");
if (minute<10)
{
lcd.print("0");
}
lcd.print(minute, DEC);
lcd.print(":");
if (second<10)
{
lcd.print("0");
}
lcd.print(second, DEC);
lcd.print(temperatureC);
lcd.print("C");
lcd.setCursor(0,1);
lcd.print(" ");
switch(dayOfWeek){
case 1:
lcd.print("Sun");
break;
case 2:
lcd.print("Mon");
break;
case 3:
lcd.print("Tue");
break;
case 4:
lcd.print("Wed");
break;
case 5:
lcd.print("Thu");
break;
case 6:
lcd.print("Fri");
break;
case 7:
lcd.print("Sat");
break;
}
lcd.print(" ");
lcd.print(dayOfMonth, DEC);
lcd.print("/");
lcd.print(month, DEC);
lcd.print("/20");
lcd.print(year, DEC);
delay(1000);
}