made cardreader more selfsustained

Marlin/cardreader.h

@@ -18,26 +18,38 @@ public:
   void checkautostart(bool x); 
   
   void closefile();
+  void release();
+  void startFileprint();
+  void startFilewrite(char *name);
+  void pauseSDPrint();
+  void getStatus();
+  
+  void selectFile(char* name);
   void getfilename(const uint8_t nr);
   uint8_t getnrfilenames();
+  
+
+  inline void ls() {root.ls();};
+  inline bool eof() { sdpos = file.curPosition();return sdpos>=filesize ;};
+  inline char get() {  int16_t n = file.read(); return (n!=-1)?(char)n:'\n';};
+  inline void setIndex(long index) {sdpos = index;file.seekSet(index);};
 
 public:
-  bool savetosd;
-  SdFile file;
-  uint32_t filesize;
-  uint32_t sdpos ;
-  bool sdmode ;
-  SdFile root;
-  bool sdactive ;
+  bool saving;
+  bool sdprinting ;  
+  bool cardOK ;
   char filename[11];
 private:
-   Sd2Card card;
-   SdVolume volume;
+  SdFile root;
+  Sd2Card card;
+  SdVolume volume;
+  SdFile file;
+  uint32_t filesize;
+  //int16_t n;
+  unsigned long autostart_atmillis;
+  uint32_t sdpos ;
 
-   //int16_t n;
-   unsigned long autostart_atmillis;
-
-   bool autostart_stilltocheck; //the sd start is delayed, because otherwise the serial cannot answer fast enought to make contact with the hostsoftware.
+  bool autostart_stilltocheck; //the sd start is delayed, because otherwise the serial cannot answer fast enought to make contact with the hostsoftware.
 };
   
 #endif //SDSUPPORT