add core files

Classes/usb.h

@@ -0,0 +1,28 @@
+/*
+ * usb.h
+ *
+ * This module has the wrapper functions to access USB driver functions.
+ *
+ * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
+ * ALL RIGHTS RESERVED
+ *
+*/
+
+#ifndef USB_H
+#define USB_H
+
+#define USB_MIN_PACKET_SIZE 64
+#define USB_MAX_PACKET_SIZE 64
+
+#define MY_VID 0x0451
+#define MY_PID 0x6401
+
+int USB_Open(void);
+bool USB_IsConnected();
+int USB_Write();
+int USB_Read();
+int USB_Close();
+int USB_Init();
+int USB_Exit();
+
+#endif //USB_H