change setCalibrationFact to tar

IOT/lib/Capteur/src/Balance.cpp

@@ -49,8 +49,9 @@ String Balance::read() {
     }
 }
 
-void Balance::setCalibrationFact(int caliFact){
+bool Balance::tar(int val){
     this->initialized = true;
-    this->calibrationFact = caliFact;
-    this->capteur->set_scale(caliFact);
+    this->calibrationFact = val;
+    this->capteur->set_scale(val);
+    return this->initialized;
 }