/*
DS1302 RTC module test by Tuxun

-CE/RST RTC pin D3(3)
-IO/DAT RTC pin D4(4)
-CLK RTC pin D5(5)

Under PUBLIC DOMAIN!
*/


//RTC part 



//time from http://www.pjrc.com/teensy/arduino_libraries/Time.zip
#include <Time.h>

//DS1302 from http://playground.arduino.cc/uploads/Main/DS1302RTC.zip
#include <DS1302RTC.h>

// Set RTC pins:  CE, IO,CLK
DS1302RTC RTC(3, 4, 5);

// Optional connection for RTC module: -1 to disable
#define DS1302_GND_PIN -1
#define DS1302_VCC_PIN -1


void setup()
{
  //initial welcome :)
  Serial.begin(9600);
  Serial.println("DS1302 TEST PROGRAM");
  Serial.println();
  
  
    // Activate RTC module
  digitalWrite(DS1302_GND_PIN, LOW);
  pinMode(DS1302_GND_PIN, OUTPUT);

  digitalWrite(DS1302_VCC_PIN, HIGH);
  pinMode(DS1302_VCC_PIN, OUTPUT);
  
  Serial.println("RTC module activated");
  Serial.println();
  delay(500);
  
  //check that it is activated
  if (RTC.haltRTC()) {
    Serial.println("The DS1302 is stopped.  Please run the SetTime");
    Serial.println("example to initialize the time and begin running.");
    Serial.println();
  }
  if (!RTC.writeEN()) {
    Serial.println("The DS1302 is write protected. This normal.");
    Serial.println();
  }
  
  delay(5000);
  
  
  
}

void loop()
{
  Serial.println("\n");
  
  //DS1302 timestamp structure 
 tmElements_t tm;
  
  //Serial.print("UNIX Time: ");
  //Serial.print(RTC.get());

  if (! RTC.read(tm)) {
    Serial.print("  Time = ");
    print2digits(tm.Hour);
    Serial.write(':');
    print2digits(tm.Minute);
    Serial.write(':');
    print2digits(tm.Second);
    Serial.print(", Date (D/M/Y) = ");
    Serial.print(tm.Day);
    Serial.write('/');
    Serial.print(tm.Month);
    Serial.write('/');
    Serial.print(tmYearToCalendar(tm.Year));
    Serial.print(", DoW = ");
    Serial.print(tm.Wday);
    Serial.println();
  } else {
    Serial.println("DS1302 read error!  Please check the circuitry.");
    Serial.println();
    delay(9000);
  }
  
  // Wait one second before repeating :)
  delay (1000);
  
}


void print2digits(int number) {
  if (number >= 0 && number < 10)
    Serial.write('0');
  Serial.print(number);
}