minack
97 lines
3.9 KiB
C
97 lines
3.9 KiB
C
/*####COPYRIGHTBEGIN####
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-------------------------------------------
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Copyright (C) 2005 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 BACDEF_H
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#define BACDEF_H
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#include <stddef.h>
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#include <stdint.h>
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#include "bacenum.h"
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#include "config.h"
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/* This stack implements this version of BACnet */
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#define BACNET_PROTOCOL_VERSION 1
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#define BACNET_PROTOCOL_REVISION 5
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/* largest BACnet Instance Number */
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/* Also used as a device instance number wildcard address */
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#define BACNET_MAX_INSTANCE (0x3FFFFF)
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#define BACNET_INSTANCE_BITS 22
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/* large BACnet Object Type */
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#define BACNET_MAX_OBJECT (0x3FF)
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/* Array index 0=size of array, n=array element n, MAX=all array elements */
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#define BACNET_ARRAY_ALL (~0)
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/* Priority Array for commandable objects */
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#define BACNET_NO_PRIORITY 0
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#define BACNET_MIN_PRIORITY 1
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#define BACNET_MAX_PRIORITY 16
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#define BACNET_BROADCAST_NETWORK 0xFFFF
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/* Any size MAC address should be allowed which is less than or
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equal to 7 bytes. The IPv6 addresses are planned to be handled
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outside this area. */
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/* FIXME: mac[] only needs to be as big as our local datalink MAC */
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#define MAX_MAC_LEN 7
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struct BACnet_Device_Address {
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/* mac_len = 0 if global address */
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uint8_t mac_len;
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/* note: MAC for IP addresses uses 4 bytes for addr, 2 bytes for port */
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/* use de/encode_unsigned32/16 for re/storing the IP address */
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uint8_t mac[MAX_MAC_LEN];
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/* DNET,DLEN,DADR or SNET,SLEN,SADR */
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/* the following are used if the device is behind a router */
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/* net = 0 indicates local */
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uint16_t net; /* BACnet network number */
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/* LEN = 0 denotes broadcast MAC ADR and ADR field is absent */
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/* LEN > 0 specifies length of ADR field */
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uint8_t len; /* length of MAC address */
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uint8_t adr[MAX_MAC_LEN]; /* hwaddr (MAC) address */
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};
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typedef struct BACnet_Device_Address BACNET_ADDRESS;
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/* note: with microprocessors having lots more code space than memory,
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it might be better to have a packed encoding with a library to
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easily access the data. */
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typedef struct BACnet_Object_Id {
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uint16_t type;
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uint32_t instance;
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} BACNET_OBJECT_ID;
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#define MAX_NPDU (1+1+2+1+MAX_MAC_LEN+2+1+MAX_MAC_LEN+1+1+2)
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#define MAX_PDU (MAX_APDU + MAX_NPDU)
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#define BACNET_ID_VALUE(bacnet_object_instance, bacnet_object_type) ((((bacnet_object_type) & BACNET_MAX_OBJECT) << BACNET_INSTANCE_BITS) | ((bacnet_object_instance) & BACNET_MAX_INSTANCE))
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#define BACNET_INSTANCE(bacnet_object_id_num) ((bacnet_object_id_num)&BACNET_MAX_INSTANCE)
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#define BACNET_TYPE(bacnet_object_id_num) (((bacnet_object_id_num) >> BACNET_INSTANCE_BITS ) & BACNET_MAX_OBJECT)
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#endif
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