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diff --git a/at91lib/usb/common/core/USBInterfaceAssociationDescriptor.h b/at91lib/usb/common/core/USBInterfaceAssociationDescriptor.h
new file mode 100644
index 0000000..5f3dd21
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+++ b/at91lib/usb/common/core/USBInterfaceAssociationDescriptor.h
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+/* ----------------------------------------------------------------------------
+ *         ATMEL Microcontroller Software Support 
+ * ----------------------------------------------------------------------------
+ * Copyright (c) 2008, Atmel Corporation
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the disclaimer below.
+ *
+ * Atmel's name may not be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
+ * DISCLAIMED. IN NO EVENT SHALL ATMEL 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.
+ * ----------------------------------------------------------------------------
+ */
+
+/**
+ *  \page USBInterfaceAssociateDescriptor
+ *  !!!Purpose
+ * 
+ *      Class for manipulating USB IAD descriptors.
+ * 
+ *  !!!Usage
+ * 
+ *      -# Test
+ */
+
+#ifndef USBDIADDESCRIPTOR_H
+#define USBDIADDESCRIPTOR_H
+
+//------------------------------------------------------------------------------
+//         Types
+//------------------------------------------------------------------------------
+
+#ifdef __ICCARM__          // IAR
+#pragma pack(1)            // IAR
+#define __attribute__(...) // IAR
+#endif                     // IAR
+
+/*
+    Type: USBDeviceDescriptor
+        USB standard device descriptor structure.
+
+    Variables:
+        bLength - Size of this descriptor in bytes.
+        bDescriptorType - Descriptor type (<USBGenericDescriptor_IAD>).
+        bFirstInterface - Interface number of the first interface that is 
+                          associated with this function. 
+        bInterfaceCount - Number of contiguous interfaces that are 
+                          associated with this function. 
+        bFunctionClass - Class code (assigned by USB-IF).
+        bFunctionSubClass - Subclass code (assigned by USB-IF).
+        bFunctionProtocol - Protocol code (assigned by USB-IF)
+        iFunction - Index of string descriptor describing this function.
+*/
+typedef struct {
+
+   unsigned char bLength;
+   unsigned char bDescriptorType;
+   unsigned char bFirstInterface;
+   unsigned char bInterfaceCount;
+   unsigned char bFunctionClass;
+   unsigned char bFunctionSubClass;
+   unsigned char bFunctionProtocol;
+   unsigned char iFunction;
+} __attribute__ ((packed)) USBInterfaceAssociationDescriptor; // GCC
+
+#ifdef __ICCARM__          // IAR
+#pragma pack()             // IAR
+#endif                     // IAR
+
+#endif //#ifndef USBDIADDESCRIPTOR_H
+