├── README.md
└── MAX6675
    └── MAX6675.ino


/README.md:
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1 | # MAX6675
2 | MAX6675 Thermocouple Adapter Library
3 | 


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/MAX6675/MAX6675.ino:
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 1 | 
 2 | #include <SPI.h>
 3 | #define SS_PIN (10)
 4 | //#define DEBUG_EN
 5 | void setup()
 6 | {
 7 |     Serial.begin(9600);
 8 |     SPI.begin();
 9 |     SPI.setClockDivider(SPI_CLOCK_DIV32);
10 |     pinMode(SS_PIN,OUTPUT);
11 |     digitalWrite(SS_PIN, HIGH);
12 |      
13 | }
14 | 
15 | void loop()
16 | {
17 |     uint16_t temperature=0;
18 |     uint8_t buffer[2];
19 | 
20 |     digitalWrite(SS_PIN, LOW);
21 |     buffer[0]=SPI.transfer(0xaa);
22 |     buffer[1]=SPI.transfer(0xaa);
23 |     digitalWrite(SS_PIN, HIGH);
24 | 
25 |     temperature = (buffer[0]&0x7F);
26 |     temperature = temperature<<8;
27 |     temperature &= 0xff00;
28 |     temperature |= (buffer[1]>>3);
29 |     Serial.println("***************");
30 | #ifdef DEBUG_EN
31 |     Serial.print("B0-B7 ");
32 |     Serial.println(buffer[1],HEX);
33 |     Serial.print("B8-B15 ");
34 |     Serial.println(buffer[0],HEX);
35 | #endif
36 | 
37 |     if ((buffer[1]&0x04)!=0) {
38 |         Serial.println("!!!!!Thermocouple OPEN!!!!!");
39 |         Serial.println("Following reading may be invalid");
40 |     }
41 |     Serial.print("Ambient Temperature is ");
42 |     Serial.println((float)temperature*1024/32768,DEC);
43 |     Serial.println("***************");
44 |   
45 |     delay(1000);
46 |   
47 |   
48 | }
49 | 


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