* Changed header file include guards to unique namespace. Updated file headers comments with SPDX [issue #55] (#666)

src/bacnet/datalink/crc.c

@@ -1,44 +1,17 @@
-/*####COPYRIGHTBEGIN####
- -------------------------------------------
- Copyright (C) 2004 Steve Karg
-
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License
- as published by the Free Software Foundation; either version 2
- of the License, or (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to:
- The Free Software Foundation, Inc.
- 59 Temple Place - Suite 330
- Boston, MA  02111-1307
- USA.
-
- As a special exception, if other files instantiate templates or
- use macros or inline functions from this file, or you compile
- this file and link it with other works to produce a work based
- on this file, this file does not by itself cause the resulting
- work to be covered by the GNU General Public License. However
- the source code for this file must still be made available in
- accordance with section (3) of the GNU General Public License.
-
- This exception does not invalidate any other reasons why a work
- based on this file might be covered by the GNU General Public
- License.
- -------------------------------------------
-####COPYRIGHTEND####*/
+/**
+ * @file
+ * @brief BACnet MS/TP datalink CRC calculations
+ * @author Steve Karg <skarg@users.sourceforge.net>
+ * @date 2004
+ * @copyright SPDX-License-Identifier: GPL-2.0-or-later WITH GCC-exception-2.0
+ * @defgroup DLMSTP BACnet MS/TP DataLink Network Layer
+ * @ingroup DataLink
+ */
 #include <stddef.h>
 #include <stdint.h>
 #include <stdbool.h>
 #include "crc.h"
 
-/** @file crc.c  Calculate CRCs */
-
 #if defined(CRC_USE_TABLE)
 /* note: table is created using unit test below */
 static const uint8_t HeaderCRC[256] = { 0x00, 0xfe, 0xff, 0x01, 0xfd, 0x03,