--- /dev/null
+/*----------------------------------------------------------------------------
+ * U S B - K e r n e l
+ *----------------------------------------------------------------------------
+ * Name: cdcuser.h
+ * Purpose: USB Communication Device Class User module Definitions
+ * Version: V1.10
+ *----------------------------------------------------------------------------
+ * This software is supplied "AS IS" without any warranties, express,
+ * implied or statutory, including but not limited to the implied
+ * warranties of fitness for purpose, satisfactory quality and
+ * noninfringement. Keil extends you a royalty-free right to reproduce
+ * and distribute executable files created using this software for use
+ * on NXP Semiconductors LPC microcontroller devices only. Nothing else
+ * gives you the right to use this software.
+ *
+ * Copyright (c) 2009 Keil - An ARM Company. All rights reserved.
+ *---------------------------------------------------------------------------*/
+
+#ifndef __CDCUSER_H__
+#define __CDCUSER_H__
+
+/* CDC buffer handling */
+extern int CDC_RdOutBuf (char *buffer, const int *length);
+extern CDC_WrOutBuf (const char *buffer, int *length);
+extern CDC_OutBufAvailChar (int *availChar);
+
+
+/* CDC Data In/Out Endpoint Address */
+#define CDC_DEP_IN 0x82
+#define CDC_DEP_OUT 0x02
+
+/* CDC Communication In Endpoint Address */
+#define CDC_CEP_IN 0x81
+
+/* CDC Requests Callback Functions */
+extern uint32_t CDC_SendEncapsulatedCommand (void);
+extern uint32_t CDC_GetEncapsulatedResponse (void);
+extern uint32_t CDC_SetCommFeature (unsigned short wFeatureSelector);
+extern uint32_t CDC_GetCommFeature (unsigned short wFeatureSelector);
+extern uint32_t CDC_ClearCommFeature (unsigned short wFeatureSelector);
+extern uint32_t CDC_GetLineCoding (void);
+extern uint32_t CDC_SetLineCoding (void);
+extern uint32_t CDC_SetControlLineState (unsigned short wControlSignalBitmap);
+extern uint32_t CDC_SendBreak (unsigned short wDurationOfBreak);
+
+/* CDC Bulk Callback Functions */
+extern void CDC_BulkIn (void);
+extern void CDC_BulkOut (void);
+
+/* CDC Notification Callback Function */
+extern void CDC_NotificationIn (void);
+
+/* CDC Initializtion Function */
+extern void CDC_Init (char portNum);
+
+/* CDC prepare the SERAIAL_STATE */
+extern unsigned short CDC_GetSerialState (void);
+
+/* flow control */
+extern unsigned short CDC_DepInEmpty; // DataEndPoint IN empty
+
+#endif /* __CDCUSER_H__ */
+