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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.
+ * ----------------------------------------------------------------------------
+ */
+
+/**
+ \unit
+
+ !!!Purpose
+
+ Definition of several callbacks which are triggered by the USB software
+ driver after receiving specific requests.
+
+ !!!Usage
+
+ -# Re-implement the USBDDriverCallbacks_ConfigurationChanged
+ callback to know when the hosts changes the active configuration of
+ the device.
+ -# Re-implement the USBDDriverCallbacks_InterfaceSettingChanged
+ callback to get notified whenever the active setting of an interface
+ is changed by the host.
+*/
+
+#ifndef USBDDRIVERCALLBACKS_H
+#define USBDDRIVERCALLBACKS_H
+
+//------------------------------------------------------------------------------
+// Exported functions
+//------------------------------------------------------------------------------
+
+extern void USBDDriverCallbacks_ConfigurationChanged(unsigned char cfgnum);
+
+extern void USBDDriverCallbacks_InterfaceSettingChanged(unsigned char interface,
+ unsigned char setting);
+
+#endif //#ifndef USBDDRIVERCALLBACKS_H
+
personal git repositories of Harald Welte. Your mileage may vary