skarg
61 lines
2.2 KiB
C
61 lines
2.2 KiB
C
/*####COPYRIGHTBEGIN####
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-------------------------------------------
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Copyright (C) 2003 Steve Karg
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to
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The Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA.
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As a special exception, if other files instantiate templates or
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use macros or inline functions from this file, or you compile
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this file and link it with other works to produce a work based
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on this file, this file does not by itself cause the resulting
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work to be covered by the GNU General Public License. However
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the source code for this file must still be made available in
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accordance with section (3) of the GNU General Public License.
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This exception does not invalidate any other reasons why a work
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based on this file might be covered by the GNU General Public
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License.
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-------------------------------------------
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####COPYRIGHTEND####*/
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#ifndef KEY_H
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#define KEY_H
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#include <stdint.h>
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/* This file has the macros that encode and decode the */
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/* keys for the keylist when used with BACnet Object Id's */
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typedef uint32_t KEY;
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/* assuming a 32 bit KEY */
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#define KEY_TYPE_OFFSET 22 /* bits - for BACnet */
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#define KEY_TYPE_MASK 0x000003FFL
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#define KEY_ID_MASK 0x003FFFFFL
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#define KEY_ID_MAX (KEY_ID_MASK + 1L)
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#define KEY_TYPE_MAX (KEY_TYPE_MASK + 1L)
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#define KEY_LAST(key) ((key & KEY_ID_MASK) == KEY_ID_MAX)
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#define KEY_ENCODE(type,id) ( ((unsigned int)\
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((unsigned int)(type) & KEY_TYPE_MASK) << KEY_TYPE_OFFSET) |\
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((unsigned int)(id) & KEY_ID_MASK) )
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#define KEY_DECODE_TYPE(key) ((int)(((unsigned int)(key) >> KEY_TYPE_OFFSET)\
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& KEY_TYPE_MASK))
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#define KEY_DECODE_ID(key) ((int)((unsigned int)(key) & KEY_ID_MASK))
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#endif
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