I bought a MLX90614 IR sensor and hooked it up based on the bildr page
http://bildr.org/2011/02/mlx90614-arduino/
Here is my setup based on the bildr page
I installed the library, and used the exact codes in the tutorial
#include <i2cmaster.h>
void setup(){
Serial.begin(9600);
Serial.println("Setup...");
i2c_init(); //Initialise the i2c bus
PORTC = (1 << PORTC4) | (1 << PORTC5);//enable pullups
}
void loop(){
int dev = 0x5A<<1;
int data_low = 0;
int data_high = 0;
int pec = 0;
i2c_start_wait(dev+I2C_WRITE);
i2c_write(0x07);
// read
i2c_rep_start(dev+I2C_READ);
data_low = i2c_readAck(); //Read 1 byte and then send ack
data_high = i2c_readAck(); //Read 1 byte and then send ack
pec = i2c_readNak();
i2c_stop();
//This converts high and low bytes together and processes temperature, MSB is a error bit and is ignored for temps
double tempFactor = 0.02; // 0.02 degrees per LSB (measurement resolution of the MLX90614)
double tempData = 0x0000; // zero out the data
int frac; // data past the decimal point
// This masks off the error bit of the high byte, then moves it left 8 bits and adds the low byte.
tempData = (double)(((data_high & 0x007F) << 8) + data_low);
tempData = (tempData * tempFactor)-0.01;
float celcius = tempData - 273.15;
float fahrenheit = (celcius*1.8) + 32;
Serial.print("Celcius: ");
Serial.println(celcius);
Serial.print("Fahrenheit: ");
Serial.println(fahrenheit);
delay(1000); // wait a second before printing again
}
However when I run it, all i see in the Serial window is "setup..." and nothing happens after that.
Am i supposed to do something after that? I have no experience with I2C whatsoever so I don't even know what the code is even doing. What did I do wrong?