Diff: USBDevice/USBMSD/USBMSD.h

Revision:

19:148a0b8d23bc

Parent:

18:08b207d10056

Child:

20:50bf1cd2e2fe

--- a/USBDevice/USBMSD/USBMSD.h	Sun Dec 11 15:22:50 2011 +0000
+++ b/USBDevice/USBMSD/USBMSD.h	Sun Dec 11 15:42:23 2011 +0000
@@ -30,9 +30,11 @@
  *   - virtual int disk_initialize(): function to initialize the memory
  *   - virtual int disk_sectors(): return the number of blocks
  *   - virtual int disk_size(): return the memory size
+ *   - virtual int disk_status(): return the status of the storage chip
  *
- * All functions names are compatible with the fat filesystem library. So you can imagine using your own class with either
- * USBMSD or a fat filesystem library.
+ * All functions names are compatible with the fat filesystem library. So you can imagine using your own class with 
+ * USBMSD and the fat filesystem library in the same program. Just be careful because there are two different parts which
+ * will access the sd card. You can do a master/slave system using the disk_status method.
  *
  * Once these functions have been defined, you can call connect() (at the end of the constructor of your class for instance)
  * of USBMSD to connect your mass storage device ;)
@@ -128,6 +130,14 @@
     * @returns memory size
     */
     virtual int disk_size() = 0;
+    
+    
+    /*
+    * To check the status of the storage chip
+    *
+    * @returns status: 0: OK, 1: disk not initialized, 2: no medium in the drive, 4: write protected
+    */
+    virtual int disk_status() = 0;
 
     /*
     * Connect the USB MSD device. Establish disk initialization before really connect the device.