#define X_PIN 0
#define Y_PIN 1
#define Z_PIN 2


void setup() {
  Serial.begin(9600);
  analogReference(EXTERNAL);
}

void loop(){

  float xAcc=readAcc(X_PIN);
  float yAcc=readAcc(Y_PIN);
  float zAcc=readAcc(Z_PIN);

  Serial.print(xAcc,DEC);
  Serial.print(",");
  Serial.print(yAcc,DEC);
  Serial.print(",");
  Serial.print(zAcc,DEC);
  Serial.println(";");

}

float readAcc(int port){

  int value=analogRead(port);
  int miliVolts=map(value,0,1023,0,3300)-3300/2;
  float acc=(float)miliVolts/360;
  return acc;
}