#include "Wire.h"
#define SENSOR_ADDRESS 0x68
#define TEMP_INT_POINTER 0x11
#define TEMP_DEC_POINTER 0x12
#define TEMP_READ_FAIL 0xFF
#define LATCH_DIO 4
#define CLK_DIO 7
#define DATA_DIO 8

const byte leterE = B10000110;

const byte num0 = B11000000;
const byte num1 = B11111001;
const byte num2 = B10100100;
const byte num3 = B10110000;
const byte num4 = B10011001;
const byte num5 = B10010010;
const byte num6 = B10000010;
const byte num7 = B11111000;
const byte num8 = B10000000;
const byte num9 = B10010000;
const byte nums[]= {num0,num1,num2,num3,num4,num5,num6,num7,num8,num9};


const byte point1 = B00000001;
const byte point2 = B00000010;
const byte point3 = B00000100;
const byte dot = B01111111;
void setup()
{
  pinMode(LATCH_DIO,OUTPUT);
  pinMode(CLK_DIO,OUTPUT);
  pinMode(DATA_DIO,OUTPUT); 
  Wire.begin();
  Serial.begin(9600);
}
void loop()
{
  displayTemperature();
  
}

void displayTemperature()
{   byte data = TEMP_READ_FAIL;
  Wire.beginTransmission(SENSOR_ADDRESS);
  Wire.write(TEMP_INT_POINTER); // the integer portion
  Wire.endTransmission();
  
  Wire.requestFrom(SENSOR_ADDRESS, 1);
  if (Wire.available()) {
    data = Wire.read();
  displayNow(nums[data%10],point2);
  data=data-data%10;
  displayNow(nums[(data%100)/10],point1);
  }
  else{
  displayNow(dot, point3);
  }
}
void displayNow(byte x, byte y){
 digitalWrite(LATCH_DIO,LOW); 
  shiftOut(DATA_DIO, CLK_DIO, MSBFIRST, x);
  shiftOut(DATA_DIO, CLK_DIO, MSBFIRST, y );
  digitalWrite(LATCH_DIO,HIGH);   
}