1. #include "Wire.h"
2. #define SENSOR_ADDRESS 0x68
3. #define TEMP_INT_POINTER 0x11
4. #define TEMP_DEC_POINTER 0x12
5. #define TEMP_READ_FAIL 0xFF
6. #define LATCH_DIO 4
7. #define CLK_DIO 7
8. #define DATA_DIO 8
9.  
10. const byte leterE = B10000110;
11.  
12. const byte num0 = B11000000;
13. const byte num1 = B11111001;
14. const byte num2 = B10100100;
15. const byte num3 = B10110000;
16. const byte num4 = B10011001;
17. const byte num5 = B10010010;
18. const byte num6 = B10000010;
19. const byte num7 = B11111000;
20. const byte num8 = B10000000;
21. const byte num9 = B10010000;
22. const byte nums[]= {num0,num1,num2,num3,num4,num5,num6,num7,num8,num9};
23.  
24.  
25. const byte point1 = B00000001;
26. const byte point2 = B00000010;
27. const byte point3 = B00000100;
28. const byte dot = B01111111;
29. void setup()
30. {
31.   pinMode(LATCH_DIO,OUTPUT);
32.   pinMode(CLK_DIO,OUTPUT);
33.   pinMode(DATA_DIO,OUTPUT);
34.   Wire.begin();
35.   Serial.begin(9600);
36. }
37. void loop()
38. {
39.   displayTemperature();
40.  
41. }
42.  
43. void displayTemperature()
44. {   byte data = TEMP_READ_FAIL;
45.   Wire.beginTransmission(SENSOR_ADDRESS);
46.   Wire.write(TEMP_INT_POINTER); // the integer portion
47.   Wire.endTransmission();
48.  
49.   Wire.requestFrom(SENSOR_ADDRESS, 1);
50.   if (Wire.available()) {
51.     data = Wire.read();
52.   displayNow(nums[data%10],point2);
53.   data=data-data%10;
54.   displayNow(nums[(data%100)/10],point1);
55.   }
56.   else{
57.   displayNow(dot, point3);
58.   }
59. }
60. void displayNow(byte x, byte y){
61.  digitalWrite(LATCH_DIO,LOW);
62.   shiftOut(DATA_DIO, CLK_DIO, MSBFIRST, x);
63.   shiftOut(DATA_DIO, CLK_DIO, MSBFIRST, y );
64.   digitalWrite(LATCH_DIO,HIGH);  
65. }
66.  
67.