Added dedicated class for power management

src/app/PowerManager.cpp

@@ -0,0 +1,47 @@
+#include "PowerManager.h"
+
+PowerManager::PowerManager()
+{
+  
+}
+
+PowerManager::~PowerManager()
+{
+  
+}
+
+PowerManager::PowerInfo PowerManager::getPowerInfo(const uint16_t nbOfMeasures) const
+{
+  uint16_t batteryMeasures(0), temp(0);
+  unsigned char i(0);
+  int checkLevel(0);
+  PowerInfo p;
+
+  for(;i < nbOfMeasures;i++)
+  {
+    temp = analogRead(ADC);
+    batteryMeasures += temp;
+  }
+  
+  batteryMeasures /= nbOfMeasures;
+  
+  if(batteryMeasures <= USB_THRESHOLD)
+  {
+    p.powerType = USB;
+    p.level = 0;
+  }
+  else 
+  {
+    p.powerType = BATTERY; 
+    checkLevel = ((double)(batteryMeasures-BATT_EMPTY)*100.0/(double)BATT_DIFF);
+    
+    if(checkLevel > 100)
+      p.level = 100;
+    else if (checkLevel < 0)
+      p.level = 0;
+    else
+      p.level = checkLevel;
+  }
+  
+  return p;
+}

src/app/PowerManager.h

@@ -0,0 +1,28 @@
+#ifndef POWERMANAGER
+#define POWERMANAGER
+
+#include "Arduino.h"
+#include "definition.h"
+
+class PowerManager
+{
+  friend class SAB;
+  
+  public:
+    enum PowerType { BATTERY = 0, USB };
+    //Data structure for the battery info
+    struct PowerInfo
+    {
+      PowerType powerType;
+      unsigned char level;
+    };
+    
+    ~PowerManager();
+    
+   PowerManager::PowerInfo getPowerInfo(const uint16_t nbOfMeasures = 5) const;
+  protected:
+    PowerManager();
+  private:
+};
+
+#endif //POWERMANAGER_H