--- libaitpelco/inc/aitpelco.h	2010/03/12 14:57:17	1.1.1.1.2.2
+++ libaitpelco/inc/aitpelco.h	2011/03/17 08:36:14	1.1.1.1.2.4
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@openbsd-bg.org>
 *
 * $Author: misho $
-* $Id: aitpelco.h,v 1.1.1.1.2.2 2010/03/12 14:57:17 misho Exp $
+* $Id: aitpelco.h,v 1.1.1.1.2.4 2011/03/17 08:36:14 misho Exp $
 *
 *************************************************************************/
 #ifndef __AITPELCO_H
@@ -156,7 +156,15 @@ inline u_char pelcoAddCmdData(void * __restrict p, u_c
  */
 inline u_char pelcoGetCmdData(void * __restrict p, u_char * __restrict cmd, u_char * __restrict data);
 
+/*
+ * pelcoChkSum() Check ot Correct check sum in packet
+ * @p = Input Packet structure
+ * @correct = Calculate new check sum if incorrect !=0, if ==0 only check
+ * return: 0xFF - bad packet, invalid check sum, 0 check sum is correct.
+ */
+inline u_char pelcoChkSum(void * __restrict p, u_char correct);
 
+
 /*
  * pelco_GetVersion() Return Pelco protocol version
  * @p = Packet structure
@@ -232,7 +240,7 @@ inline u_char pelco_P_fromCmd(struct bitP_Cmd1 cmd1, s
  * @p = Output Packet structure
  * return: 0xFF - error, 0 - ok
  */
-inline u_char pelco_SetCamCmdData(u_char ver, u_char __restrict cam, 
+inline u_char pelco_SetCamCmdData(u_char ver, u_char cam, 
 		u_char * __restrict cmd, u_char * __restrict data, void * __restrict p);