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diff --git a/AT91SAM7S256/armdebug/Debugger/debug_comm.h b/AT91SAM7S256/armdebug/Debugger/debug_comm.h
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+/** @file debug_comm.h
+ * @brief Shared C/ASM header file for debugger communications
+ *
+ */
+
+/* Copyright (C) 2007-2010 the NxOS developers
+ *
+ * Module Developed by: TC Wan <tcwan@cs.usm.my>
+ *
+ * See AUTHORS for a full list of the developers.
+ *
+ * See COPYING for redistribution license
+ *
+ */
+
+#ifndef __DEBUG_COMM_H__
+#define __DEBUG_COMM_H__
+
+#include "_c_arm_macros.h"
+
+/* This is a place holder header file to allow for interfacing with C Routines in either
+ * NxOS or NXT Firmware.
+ *
+ * Since the header files from the original source trees were meant for C programs, we can't
+ * include them directly. Here we just use .extern to reference the routines.
+ */
+
+#ifdef __NXOS__
+
+ .extern nx_usb_is_connected
+ .extern nx_usb_can_write
+ .extern nx_usb_write
+ .extern nx_usb_data_written
+ .extern nx_usb_read
+ .extern nx_usb_data_read
+
+#else /* NXT Firmware */
+
+ .extern cCommInit
+ .extern cCommCtrl
+ .extern cCommExit
+ .extern dUsbWrite
+ .extern dUsbRead
+ .extern dUsbIsConfigured
+ .extern dBtSendMsg
+ .equ nxt_UBYTE_TRUE, 1
+ .equ nxt_UBYTE_FALSE, 0
+ .equ USB_CMD_READY, 0x01 /* From c_comm.iom */
+ .equ BT_CMD_READY, 0x02 /* From c_comm.iom */
+
+#endif
+
+#endif