--- libaitcrc/src/pelco.c	2010/01/20 00:15:06	1.2
+++ libaitcrc/src/pelco.c	2012/07/04 14:53:43	1.4
@@ -3,23 +3,64 @@
 *  by Michael Pounov <misho@openbsd-bg.org>
 *
 * $Author: misho $
-* $Id: pelco.c,v 1.2 2010/01/20 00:15:06 misho Exp $
+* $Id: pelco.c,v 1.4 2012/07/04 14:53:43 misho Exp $
 *
-*************************************************************************/
+**************************************************************************
+The ELWIX and AITNET software is distributed under the following
+terms:
+
+All of the documentation and software included in the ELWIX and AITNET
+Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
+
+Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
+	by Michael Pounov <misho@elwix.org>.  All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+1. Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+3. All advertising materials mentioning features or use of this software
+   must display the following acknowledgement:
+This product includes software developed by Michael Pounov <misho@elwix.org>
+ELWIX - Embedded LightWeight unIX and its contributors.
+4. Neither the name of AITNET nor the names of its contributors
+   may be used to endorse or promote products derived from this software
+   without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGE.
+*/
 #include "global.h"
 
 
 /*
- * crcPelco() Calculate Pelco D/P CRC
+ * crcPelco() - Calculate Pelco D/P CRC
+ *
  * @ver = Pelco protocol version (Dd | Pp)
  * @pkt = Packet for calculate crc
- * return: crc for packet, if is 0 check and crc_GetErrno() == 1 
+ * return: crc for packet, if is 0 check and crc_GetErrno() == EINVAL
  	Pelco protocol not supported
  */
-inline u_char crcPelco(u_char ver, u_char *pkt)
+inline u_char
+crcPelco(u_char ver, u_char *pkt)
 {
 	register u_char i, crc;
 
+	assert(pkt);
+
 	switch (ver) {
 		case 'D':
 		case 'd':
@@ -32,7 +73,7 @@ inline u_char crcPelco(u_char ver, u_char *pkt)
 			break;
 		default:
 			crc = 0;
-			crcSetErr(1, "crcAdler(): Invalid parameters!");
+			crc_SetErr(EINVAL, "Invalid parameters!");
 	}
 
 	return crc;