#include "Wire.h"
#define DS3231_I2C_ADDRESS 0x68
#define LATCH_DIO 4
#define CLK_DIO 7
#define DATA_DIO 8

 const byte kropka = B01111111;
const byte SEGMENT_MAP[] = {0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0X80,0X90};
const byte SEGMENT_SELECT[] = {0xF1,0xF2,0xF4,0xF8};
void setup()
{
  Wire.begin();
  Serial.begin(9600);
  pinMode(LATCH_DIO,OUTPUT);
  pinMode(CLK_DIO,OUTPUT);
  pinMode(DATA_DIO,OUTPUT);
}
void loop()
{
  //Serial.println(displayTemperature());

  WriteNumber3((displayTemperatureBin()>>6)*25);
  WriteNumber2(displayTemperature());
  writeLeterToSegment(B00000010,kropka);
  //WriteNumber(displayTemperatureBin()>>6);

}



byte displayTemperature()
{
   byte data = 0xFF;

  Wire.beginTransmission(0x68);
  Wire.write(0x11); // the integer portion
  Wire.endTransmission();

  Wire.requestFrom(0x68,1 );
   if (Wire.available()) { data = Wire.read();}

  return data;
}
byte displayTemperatureBin()
{
   byte data = 0xFF;

  Wire.beginTransmission(0x68);
  Wire.write(0x12); // the integer portion
  Wire.endTransmission();

  Wire.requestFrom(0x68,1 );
   if (Wire.available()) { data = Wire.read();}

  return data;
}
void WriteNumber(int Number)
{
  WriteNumberToSegment(0 , Number / 1000);
  WriteNumberToSegment(1 , (Number / 100) % 10);
  WriteNumberToSegment(2 , (Number / 10) % 10);
  WriteNumberToSegment(3 , Number % 10);
}
void WriteNumber2(int Number)
{
  WriteNumberToSegment(0 , (Number / 10) % 10);
  WriteNumberToSegment(1 , Number % 10);

}
void WriteNumber3(int Number)
{
  WriteNumberToSegment(2 , (Number / 10) % 10);
  WriteNumberToSegment(3 , Number % 10);

}
void WriteNumberToSegment(byte Segment, byte Value)
{
  digitalWrite(LATCH_DIO,LOW);
  shiftOut(DATA_DIO, CLK_DIO, MSBFIRST, SEGMENT_MAP[Value]);
  shiftOut(DATA_DIO, CLK_DIO, MSBFIRST, SEGMENT_SELECT[Segment] );
  digitalWrite(LATCH_DIO,HIGH);
}

void writeLeterToSegment(byte Segment, byte Value)
{
  digitalWrite(LATCH_DIO,LOW);
  shiftOut(DATA_DIO, CLK_DIO, MSBFIRST, Value);
  shiftOut(DATA_DIO, CLK_DIO, MSBFIRST, Segment );
  digitalWrite(LATCH_DIO,HIGH);
}