Modified SDCardManager : added new methods and changed constructor

src/app/SDCardManager.cpp

@@ -1,7 +1,8 @@
 #include "SDCardManager.h"
 
-SDCardManager::SDCardManager()
+SDCardManager::SDCardManager(const Pin csPin, SPISettings cfg) : _csPin(csPin), _spiCfg(cfg), _mounted(false)
 {
+  
 }
 
 double SDCardManager::getSize(const SizeUnit sizeUnit)
@@ -9,6 +10,8 @@ double SDCardManager::getSize(const SizeUnit sizeUnit)
   uint64_t numberOf512BytesChunks = blocksPerCluster() * totalClusters();//cardSize();
   double result = 0;
 
+  if(!isMounted()) return 0;
+  
   switch(sizeUnit)
   {
     case KBIT:
@@ -32,6 +35,22 @@ double SDCardManager::getSize(const SizeUnit sizeUnit)
     default:
       result = (double)numberOf512BytesChunks/2.0/1024.0/1024.0;
   }
-
   return result;
 }
+
+boolean SDCardManager::mountSD()
+{
+  _mounted = this->begin(_csPin, _spiCfg);
+  return _mounted;
+}
+
+void SDCardManager::unMountSD()
+{
+  _mounted = false;
+  this->end();
+}
+
+boolean SDCardManager::isMounted()
+{
+  return _mounted;
+}

src/app/SDCardManager.h

@@ -7,10 +7,20 @@ class SDCardManager : public SDClass
 {
   friend class SAB;
   public:
+    SDCardManager(const Pin csPin, SPISettings cfg);
+    
     double getSize(const SizeUnit sizeUnit = GBYTE);
+    boolean mountSD();
+    void unMountSD();
+  
+    boolean isMounted();
+  
   protected:
     SDCardManager();
   private:
+    const Pin _csPin;
+    SPISettings _spiCfg;
+    boolean _mounted;
 };
 
 #endif //SDCARDMANAGER_H