mirror of
https://github.com/stargieg/bacnet-stack
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96 lines
3.4 KiB
C
96 lines
3.4 KiB
C
/**************************************************************************
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*
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* Copyright (C) 2012 Steve Karg <skarg@users.sourceforge.net>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*********************************************************************/
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#ifndef NPDU_H
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#define NPDU_H
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#include <stdbool.h>
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#include <stdint.h>
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#include "bacdef.h"
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#include "bacenum.h"
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/** Hop count default is required by BTL to be maximum */
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#ifndef HOP_COUNT_DEFAULT
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#define HOP_COUNT_DEFAULT 255
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#endif
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/* an NPDU structure keeps the parameter stack to a minimum */
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typedef struct bacnet_npdu_data_t {
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uint8_t protocol_version;
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/* parts of the control octet: */
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bool data_expecting_reply;
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bool network_layer_message; /* false if APDU */
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BACNET_MESSAGE_PRIORITY priority;
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/* optional network message info */
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BACNET_NETWORK_MESSAGE_TYPE network_message_type; /* optional */
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uint16_t vendor_id; /* optional, if net message type is > 0x80 */
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uint8_t hop_count;
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} BACNET_NPDU_DATA;
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struct router_port_t;
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/** The info[] string has no agreed-upon purpose, hence it is useless.
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* Keeping it short here. This size could be 0-255. */
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#define ROUTER_PORT_INFO_LEN 2
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/** Port Info structure used by Routers for their routing table. */
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typedef struct router_port_t {
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uint16_t dnet; /**< The DNET number that identifies this port. */
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uint8_t id; /**< Either 0 or some ill-defined, meaningless value. */
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uint8_t info[ROUTER_PORT_INFO_LEN]; /**< Info like 'modem dialing string' */
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uint8_t info_len; /**< Length of info[]. */
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struct router_port_t *next; /**< Point to next in linked list */
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} BACNET_ROUTER_PORT;
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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uint8_t npdu_encode_max_seg_max_apdu(
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int max_segs,
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int max_apdu);
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int npdu_encode_pdu(
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uint8_t * npdu,
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BACNET_ADDRESS * dest,
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BACNET_ADDRESS * src,
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BACNET_NPDU_DATA * npdu_data);
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void npdu_encode_npdu_data(
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BACNET_NPDU_DATA * npdu,
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bool data_expecting_reply,
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BACNET_MESSAGE_PRIORITY priority);
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void npdu_copy_data(
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BACNET_NPDU_DATA * dest,
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BACNET_NPDU_DATA * src);
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int npdu_decode(
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uint8_t * npdu,
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BACNET_ADDRESS * dest,
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BACNET_ADDRESS * src,
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BACNET_NPDU_DATA * npdu_data);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif
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