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diff --git a/apps/examples/usbstorage/usbstrg.h b/apps/examples/usbstorage/usbstrg.h
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+++ b/apps/examples/usbstorage/usbstrg.h
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+/****************************************************************************
+ * examples/usbstorage/usbstrg.h
+ *
+ *   Copyright (C) 2008-2009 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __EXAMPLES_USBSTORAGE_USBSTRG_H
+#define __EXAMPLES_USBSTORAGE_USBSTRG_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/* Configuration ************************************************************/
+
+#ifndef CONFIG_EXAMPLES_USBSTRG_NLUNS
+#  define CONFIG_EXAMPLES_USBSTRG_NLUNS 1
+#endif
+
+#ifndef CONFIG_EXAMPLES_USBSTRG_DEVMINOR1
+#  define CONFIG_EXAMPLES_USBSTRG_DEVMINOR1 0
+#endif
+
+#ifndef CONFIG_EXAMPLES_USBSTRG_DEVPATH1
+#  define CONFIG_EXAMPLES_USBSTRG_DEVPATH1 "/dev/mmcsd0"
+#endif
+
+#if CONFIG_EXAMPLES_USBSTRG_NLUNS > 1
+#  ifndef CONFIG_EXAMPLES_USBSTRG_DEVMINOR2
+#    error "CONFIG_EXAMPLES_USBSTRG_DEVMINOR2 for LUN=2"
+#  endif
+#  ifndef CONFIG_EXAMPLES_USBSTRG_DEVPATH2
+#    error "CONFIG_EXAMPLES_USBSTRG_DEVPATH2 for LUN=2"
+#  endif
+#  if CONFIG_EXAMPLES_USBSTRG_NLUNS > 2
+#    ifndef CONFIG_EXAMPLES_USBSTRG_DEVMINOR3
+#      error "CONFIG_EXAMPLES_USBSTRG_DEVMINOR2 for LUN=3"
+#    endif
+#    ifndef CONFIG_EXAMPLES_USBSTRG_DEVPATH2
+#      error "CONFIG_EXAMPLES_USBSTRG_DEVPATH2 for LUN=3"
+#    endif
+#    if CONFIG_EXAMPLES_USBSTRG_NLUNS > 3
+#      error "CONFIG_EXAMPLES_USBSTRG_NLUNS must be {1,2,3}"
+#    endif
+#  endif
+#endif
+
+/* Debug ********************************************************************/
+
+#ifdef CONFIG_CPP_HAVE_VARARGS
+#  ifdef CONFIG_DEBUG
+#    define message(...) lib_lowprintf(__VA_ARGS__)
+#    define msgflush()
+#  else
+#    define message(...) printf(__VA_ARGS__)
+#    define msgflush() fflush(stdout)
+#  endif
+#else
+#  ifdef CONFIG_DEBUG
+#    define message lib_lowprintf
+#    define msgflush()
+#  else
+#    define message printf
+#    define msgflush() fflush(stdout)
+#  endif
+#endif
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: usbstrg_archinitialize
+ *
+ * Description:
+ *   Perform architecture specific initialization.  This function must
+ *   configure the block device to export via USB.  This function must be
+ *   provided by architecture-specific logic in order to use this example.
+ *
+ ****************************************************************************/
+
+extern int usbstrg_archinitialize(void);
+
+#endif /* __EXAMPLES_USBSTORAGE_USBSTRG_H */