Diff: FakeSensor/FakeMeasurer.cpp

Branch:

feature/fakeSensor

Revision:

50:c07e968b9582

Child:

83:0d3572a8a851

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/FakeSensor/FakeMeasurer.cpp	Thu Apr 06 18:52:01 2017 +0000
@@ -0,0 +1,50 @@
+#include "FakeSensor.h"
+#include "mbed.h"
+ 
+/*       
+    Constructor
+    Takes in minimum and maximum values for both temperature and humidity fake readings
+*/
+FakeMeasurer::FakeMeasurer(float tempMin, float tempMax, float humiMin, float humiMax)
+{
+    temperatureMin = tempMin;
+    temperatureMax = tempMax;
+    humidityMin = humiMin;
+    humidityMax = humiMax;
+}    
+/*
+    Simply returns true to fake successful initialisation
+*/   
+bool FakeMeasurer::init() 
+{
+    return true;
+}
+
+/*
+    Simply fakes a calibration call to the sensor by doing nothing
+*/
+void FakeMeasurer::calib() {}
+
+/* 
+    Generates a random number for both temperature and humidity using the ranges
+    given in the constructor
+    Stores the random numbers in the variables given
+*/
+void FakeMeasurer::ReadTempHumi(float *temperature, float *humidity)
+{
+    int rangeMax = 1000;
+            
+    float targetRange = temperatureMax - temperatureMin;
+    srand(time(NULL));
+    int randNum = (rand()%rangeMax);
+    float perc = (float)randNum / rangeMax;
+    float percRange = perc * targetRange;
+    *temperature = percRange + temperatureMin;   
+            
+    targetRange = humidityMax - humidityMin;
+    srand(time(NULL));
+    randNum = (rand()%rangeMax);
+    perc = (float)randNum / rangeMax;
+    percRange = perc * targetRange;
+    *humidity = percRange + humidityMin;                
+}
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