#include <Wire.h>

#define BAUD_RATE 19200
#define statusLED 12

// Addr. |Mode (162 + Read)
#define RTCAddressW 0xA2
#define RTCAddressR 0xA3

	volatile int blinkStatus = LOW;

void setup(void)
{
// initialize inputs/outputs

// start serial
	Serial.begin(BAUD_RATE);

	Wire.begin();

	Wire.beginTransmission(RTCAddressW);
	Wire.send(0);
	Wire.endTransmission();

// Registers

	Wire.beginTransmission(RTCAddressW);
	Wire.send(B00000000); // 00H	Test mode
	Wire.send(B00000000); // 01H	Alarm mode
	Wire.send(B00000001); // 02H	Seconds
	Wire.send(30);		// 03H	Minutes:p
	Wire.send(19);		// 04H	Hours
	Wire.send(11);		// 05H	Date
	Wire.send(2);			// 06H	Day of the week
	Wire.send(B00000000); // 07H	Century bit 19XX = 1 | 20XX = 0
	Wire.send(7);			// 08H	year
	Wire.send(B00000000); // 09H	Minute alarm
	Wire.send(B00000000); // 0AH	Hour alarm
	Wire.send(B10000000); // 0BH	Day alarm
	Wire.send(B10000000); // 0CH	Weekday alarm
	Wire.send(B10000011); // 0DH	CLKOUT control (00: 32.768Khz 11: 1Hz)
	Wire.send(B00000000); // 0EH	Timer control
	Wire.send(B00000000); // 0FH	Timer
	Wire.endTransmission();

	reportAVRState(3,0);
}

char i = 0;
#define numberOfRegisters 16
char c[numberOfRegisters];

void loop()
{
	Wire.beginTransmission(RTCAddressR);
	Wire.send(0);
	Wire.endTransmission();

	Wire.beginTransmission(RTCAddressR);
	Wire.requestFrom(RTCAddressR, numberOfRegisters);		  // request 1 bytes from slave device #32
	
	i = 0;
	while(Wire.available())			// slave may send less than requested
	{
		c[i] = Wire.receive();
		i++;
	}
	Wire.endTransmission();
	
	for(i=0;i<numberOfRegisters;i++)
	{
		Serial.print(i);
		Serial.print(":\t");
		Serial.println(c, BIN);			 // receive a byte as character
	}
	
	Serial.println("Waiting a little");
	delay(2000);
}

// Reports the state of the controller via pin 13's led and serial
void reportAVRState(int howManyTimes, int leaveOn)
{
	int i;

	pinMode(statusLED, OUTPUT);

	for (i=0; i < howManyTimes; i++) {
		digitalWrite(statusLED, HIGH);
		delay(200);
		digitalWrite(statusLED, LOW);
		delay(200);	 
	}

	if (leaveOn) { 
		digitalWrite(statusLED, HIGH); 
	}

	Serial.println();
	Serial.println("AVR Initialized");
}