minor changes

sensors/radio/model/LogDistanceModel.h

@@ -18,6 +18,18 @@ public:
 		return (txPower - (10 * pathLoss * std::log10(distance_m)));
 	}
 
+//	static float distanceAndRssiToPathLoss(const float txPower, const float rssi, const float distance_m) {
+//		const float delta = txPower - rssi;
+//		const float log = std::log10(distance_m) * 10.0f;
+//		const float res = delta/log;
+
+//		// sanity check
+//		const float err = std::abs(rssi - distanceToRssi(txPower, res, distance_m));
+//		if (err > 0.01) {throw Exception("error too high!");}
+
+//		return res;
+//	}
+
 };
 
 #include <vector>