skarg
91 lines
3.3 KiB
C
91 lines
3.3 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 <stdint.h>
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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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// 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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#define MAX_MAC_LEN 8
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struct BACnet_Device_Address {
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// mac_len = 0 if global address
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int mac_len;
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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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int 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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// Max number of bytes in an APDU.
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// Typical sizes are 50, 128, 206, 480, 1024, and 1476 octets
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// This is used in constructing messages and to tell others our limits
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// 50 is the minimum; adjust to your memory and physical layer constraints
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// Lon=206, MS/TP=480, ARCNET=480, Ethernet=1476
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#define MAX_APDU 50
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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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// FIXME: maybe we can encapsulate the Physical layer details in the
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// physical layer modules and not have to allocate the entire packet
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// packet includes physical layer octets such as destination, len, etc.
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// this is highly dependent on the physical layer used
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// ARCNET=1+1+2+2+1+1+1+1=10
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// MS/TP=2+1+1+1+2+1+2+1=11
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// Ethernet=6+6+2+1+1+1=17
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#ifdef BACNET_ARCNET
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#define MAX_HEADER 10
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#endif
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#ifdef BACNET_MSTP
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#define MAX_HEADER 11
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#endif
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#ifdef BACNET_ETHERNET
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#define MAX_HEADER 17
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#endif
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#define MAX_MPDU (MAX_HEADER+MAX_PDU)
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#endif
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