Code (C++)

#include <MAX6675.h>
#include <MAX6675.h>

int LED1 = 9;             // Status LED Pin
int CS_ = 10;              // CS pin on MAX6675
int SO_ = 12;              // SO pin of MAX6675
int SCK_ = 13;             // SCK pin of MAX6675
int units = 0;            // Units to readout temp (0 = ˚F, 1 = ˚C)
//float error = 0.0;        // Temperature compensation error
float temperature = 0.0;  // Temperature output variable

// Initialize the MAX6675 Library for our chip
MAX6675 temp0(CS_,SO_,SCK_,units);

// Setup Serial output and LED Pin
// MAX6675 Library already sets pin modes for MAX6675 chip!
void setup() {
	Serial.begin(9600);
	pinMode(LED1, OUTPUT);
}

void loop() {
	temperature = temp0.read_temp();         // Read the temp 5 times and return the average value to the var

	if(temperature == -1) // If there is an error with the TC, temperature will be -1
	{                  
		Serial.println("Thermocouple Error!!"); // Temperature is -1 and there is a thermocouple error
		digitalWrite(LED1, HIGH);               // Turn on the status LED
	}
	else
	{
		Serial.print("Current Temperature: ");
		Serial.println( temperature );          // Print the temperature to Serial
		digitalWrite(LED1, LOW);                // Turn on the status LED
	}

	delay(1000);	// Wait one second before reading again
}