TCN75 Temp Sensor-Arduino

sample code to test sensor

#include?"Wire.h"
#define?tcn75address?0x4F?// with pins 5~7 set to GND, the device address is 0x48

void setup()
{
??Wire.begin();                      // wake up I2C bus 
??Serial.begin(115200);
}

float tcn75_getTemperature(int address)
{
??byte a, b;
??float temp=.0;
??Wire.beginTransmission(address);  // Start transmission
??Wire.write((byte)0);              // move your register pointer back to 00h
??Wire.endTransmission();           // Stop transmission
??Wire.requestFrom(address, 2);     // Send me the contents of your first two bytes
??a?=?Wire.read();                  // first received byte stored here
??b?=?Wire.read();                  // second received byte stored here
??temp=tcn75_convertTemp(a,?b);?????// convert received bytes into float value
??return(temp);
}

float tcn75_convertTemp(byte aa, byte bb)
{
??float temp;
??if (aa>127)            // check for below zero degrees
??{
????temp=((aa-128)*-1);
????if (bb==128)         // check for 0.5 fraction
????{
??????temp-=0.5;
????}
??}
??else                   // it must be above zero degrees
??{
????temp=aa;
????if (bb==128)         // check for 0.5 fraction
????{
??????temp+=0.5;
????}
??}
??return(temp);
}


void loop()
{
??Serial.print("Current temperature = ");
??Serial.println(tcn75_getTemperature(tcn75address));
??delay(2000);
}