implemented fallback to physical usart and basis for wireless support in the future

USB/README.TXT

@@ -17,3 +17,15 @@ and processed by the message queue thread. This makes it possible to query hardw
 also makes it possible to wait on a binary semaphore when sending data back to host. The
 semaphore is set from the CDC TxComplete callback and taken by the TinyFrame write
 function, serving as a form of flow control.
+
+--------------------------------------------
+
+COMM API:
+
+GEX supports alternate command interfaces.
+
+The active interface is set in the global variable gActiveComport
+Due to special init procedures, the com_switch_transfer() function must be called to change it.
+
+The TX function is defined in TF_Integration.c and any RX'd data is sent through rxQuePostMsg()
+

USB/usbd_storage_if.c

@@ -186,7 +186,7 @@ USBD_StorageTypeDef USBD_Storage_Interface_fops_FS =
 int8_t STORAGE_Init_FS (uint8_t lun)
 {
   /* USER CODE BEGIN 2 */
-    dbg("Plug In");
+  dbg("MSC init request");
   vfs_mngr_fs_enable(1);
   return (USBD_OK);
   /* USER CODE END 2 */