Merge pull request #42 from biomurph/master

fixed bug so functions return things

Author: biomurph

library.properties

@@ -1,5 +1,5 @@
 name=PulseSensor Playground
-version=1.4.4
+version=1.4.5
 author=Joel Murphy, Yury Gitman, Brad Needham
 maintainer=Joel Murphy, Yury Gitman
 sentence=Support at PulseSensor.com

src/PulseSensorPlayground.cpp

@@ -191,7 +191,7 @@ void PulseSensorPlayground::setOutputType(byte outputType) {
 
 void PulseSensorPlayground::setThreshold(int threshold, int sensorIndex) {
   if (sensorIndex != constrain(sensorIndex, 0, SensorCount)) {
-    return; // out of range.
+    return -1; // out of range.
   }
   Sensors[sensorIndex].setThreshold(threshold);
 }
@@ -210,14 +210,14 @@ void PulseSensorPlayground::outputToSerial(char s, int d) {
 
 int PulseSensorPlayground::getPulseAmplitude(int sensorIndex) {
   if (sensorIndex != constrain(sensorIndex, 0, SensorCount)) {
-    return; // out of range.
+    return -1; // out of range.
   }
   return Sensors[sensorIndex].getPulseAmplitude();
 }
 
 unsigned long PulseSensorPlayground::getLastBeatTime(int sensorIndex) {
   if (sensorIndex != constrain(sensorIndex, 0, SensorCount)) {
-    return; // out of range.
+    return -1; // out of range.
   }
   return Sensors[sensorIndex].getLastBeatTime();
 }