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diff --git a/apps/examples/cdcacm/cdcacm.h b/apps/examples/cdcacm/cdcacm.h
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+/****************************************************************************
+ * examples/cdcacm/cdcacm.h
+ *
+ *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * 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_CDCACM_CDCACM_H
+#define __EXAMPLES_CDCACM_CDCACM_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <stdlib.h>
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/* Configuration ************************************************************/
+/* Prerequisites */
+
+#ifndef CONFIG_USBDEV
+#  error "CONFIG_USBDEV is not defined"
+#endif
+
+#ifndef CONFIG_CDCACM
+#  error "CONFIG_CDCACM is not defined"
+#endif
+
+#ifndef CONFIG_NSH_BUILTIN_APPS
+#  error "This example can only be built as an NSH built-in application
+#endif
+
+/* Default configuration values */
+
+#ifndef CONFIG_EXAMPLES_CDCACM_DEVMINOR
+#  define CONFIG_EXAMPLES_CDCACM_DEVMINOR 0
+#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 Types
+ ****************************************************************************/
+
+/* All global variables used by this example are packed into a structure in
+ * order to avoid name collisions.
+ */
+
+struct cdcacm_state_s
+{
+  /* This is the handle that references to this particular USB storage driver
+   * instance.  It is only needed if the USB mass storage device example is
+   * built using CONFIG_NSH_BUILTIN_APPS.  In this case, the value
+   * of the driver handle must be remembered between the 'sercon' and 'msdis'
+   * commands.
+   */
+
+  FAR void *handle;
+};
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/* All global variables used by this example are packed into a structure in
+ * order to avoid name collisions.
+ */
+
+extern struct cdcacm_state_s g_cdcacm;
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+#endif /* __EXAMPLES_CDCACM_CDCACM_H */