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diff --git a/new_cmsis/usb/vcom.c b/new_cmsis/usb/vcom.c
new file mode 100755
index 0000000..dcc06e4
--- /dev/null
+++ b/new_cmsis/usb/vcom.c
@@ -0,0 +1,104 @@
+/*----------------------------------------------------------------------------
+ *      Name:    vcomdemo.c
+ *      Purpose: USB virtual COM port Demo
+ *      Version: V1.20
+ *----------------------------------------------------------------------------
+ *      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.
+ *---------------------------------------------------------------------------*/
+
+#include <board.h>
+#include "lpc_types.h"
+
+#include "usb.h"
+#include "cfg.h"
+#include "hw.h"
+#include "core.h"
+#include "cdc.h"
+#include "cdcuser.h"
+#include "serial.h"
+#include "vcom.h"
+
+/* Example group ----------------------------------------------------------- */
+/** @defgroup USBDEV_USBCDC	USBCDC
+ * @ingroup USBDEV_Examples
+ * @{
+ */
+
+/*----------------------------------------------------------------------------
+ Initialises the VCOM port.
+ Call this function before using VCOM_putchar or VCOM_getchar
+ *---------------------------------------------------------------------------*/
+void VCOM_Init(void) {
+#if PORT_NUM
+  CDC_Init (1);
+#else
+  CDC_Init (0);
+#endif
+}
+
+
+/*----------------------------------------------------------------------------
+  Reads character from serial port buffer and writes to USB buffer
+ *---------------------------------------------------------------------------*/
+void VCOM_Serial2Usb(void) {
+  static char serBuf [USB_CDC_BUFSIZE];
+         int  numBytesRead, numAvailByte;
+
+  ser_AvailChar (&numAvailByte);
+  if (numAvailByte > 0) {
+    if (CDC_DepInEmpty) {
+      numBytesRead = ser_Read (&serBuf[0], &numAvailByte);
+
+      CDC_DepInEmpty = 0;
+	  USB_WriteEP (CDC_DEP_IN, (unsigned char *)&serBuf[0], numBytesRead);
+    }
+  }
+
+}
+
+/*----------------------------------------------------------------------------
+  Reads character from USB buffer and writes to serial port buffer
+ *---------------------------------------------------------------------------*/
+void VCOM_Usb2Serial(void) {
+  static char serBuf [32];
+         int  numBytesToRead, numBytesRead, numAvailByte;
+
+  CDC_OutBufAvailChar (&numAvailByte);
+  if (numAvailByte > 0) {
+      numBytesToRead = numAvailByte > 32 ? 32 : numAvailByte;
+      numBytesRead = CDC_RdOutBuf (&serBuf[0], &numBytesToRead);
+#if PORT_NUM
+      ser_Write (1, &serBuf[0], &numBytesRead);
+#else
+      ser_Write (0, &serBuf[0], &numBytesRead);
+#endif
+  }
+
+}
+
+
+/*----------------------------------------------------------------------------
+  checks the serial state and initiates notification
+ *---------------------------------------------------------------------------*/
+void VCOM_CheckSerialState (void) {
+         unsigned short temp;
+  static unsigned short serialState;
+
+  temp = CDC_GetSerialState();
+  if (serialState != temp) {
+     serialState = temp;
+     CDC_NotificationIn();                  // send SERIAL_STATE notification
+  }
+}
+
+/*
+ * @}
+ */