added new examples for average measurement

Author: dirk.koehler

Examples/HCSR04example/HCSR04example.ino

@@ -24,9 +24,16 @@ void loop() {
   Serial.print(sensor.getDistance());
   Serial.print(" mm");
 
+  Serial.println("\nAverage of 30 measurements defined manually:");
+  Serial.print(sensor.getDistance(true,30));
+  Serial.print(" mm");
+
   Serial.println("\nObstacle in given range of 500 mm found with average option on:");
   Serial.print(sensor.getObstacle(500));
 
+  Serial.println("\nObstacle in given range of 500 mm found with average option on and 30 measurements:");
+  Serial.print(sensor.getObstacle(500,true,30));
+
   Serial.println("\nObstacle in given range of 500 mm found with average option off:");
   Serial.print(sensor.getObstacle(500,false));
   delay(1000);

HCSR04.cpp

@@ -76,6 +76,7 @@ int HCSR04::getDistance(boolean average = true, int countAverageMeasurements = 1
 boolean HCSR04::getObstacle(int range, boolean average = true, int countAverageMeasurements = 10)
 {
   int distance = getDistance(average,countAverageMeasurements);
+  //check if in distance and if measurement is not zero by timeout
   if (distance <= range && distance != 0)
   {
     return true;