mirror of
https://github.com/stargieg/bacnet-stack
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135 lines
5.1 KiB
C
135 lines
5.1 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 MSTPDEF_H
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#define MSTPDEF_H
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#include <stddef.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include "bacdef.h"
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/* The value 255 is used to denote broadcast when used as a */
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/* destination address but is not allowed as a value for a station. */
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/* Station addresses for master nodes can be 0-127. */
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/* Station addresses for slave nodes can be 127-254. */
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#define MSTP_BROADCAST_ADDRESS 255
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/* MS/TP Frame Type */
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/* Frame Types 8 through 127 are reserved by ASHRAE. */
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#define FRAME_TYPE_TOKEN 0
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#define FRAME_TYPE_POLL_FOR_MASTER 1
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#define FRAME_TYPE_REPLY_TO_POLL_FOR_MASTER 2
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#define FRAME_TYPE_TEST_REQUEST 3
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#define FRAME_TYPE_TEST_RESPONSE 4
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#define FRAME_TYPE_BACNET_DATA_EXPECTING_REPLY 5
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#define FRAME_TYPE_BACNET_DATA_NOT_EXPECTING_REPLY 6
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#define FRAME_TYPE_REPLY_POSTPONED 7
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/* Frame Types 128 through 255: Proprietary Frames */
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/* These frames are available to vendors as proprietary (non-BACnet) frames. */
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/* The first two octets of the Data field shall specify the unique vendor */
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/* identification code, most significant octet first, for the type of */
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/* vendor-proprietary frame to be conveyed. The length of the data portion */
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/* of a Proprietary frame shall be in the range of 2 to 501 octets. */
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#define FRAME_TYPE_PROPRIETARY_MIN 128
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#define FRAME_TYPE_PROPRIETARY_MAX 255
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/* The initial CRC16 checksum value */
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#define CRC16_INITIAL_VALUE (0xFFFF)
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/* receive FSM states */
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typedef enum {
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MSTP_RECEIVE_STATE_IDLE = 0,
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MSTP_RECEIVE_STATE_PREAMBLE = 1,
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MSTP_RECEIVE_STATE_HEADER = 2,
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MSTP_RECEIVE_STATE_DATA = 3,
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MSTP_RECEIVE_STATE_SKIP_DATA = 4
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} MSTP_RECEIVE_STATE;
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/* master node FSM states */
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typedef enum {
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MSTP_MASTER_STATE_INITIALIZE = 0,
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MSTP_MASTER_STATE_IDLE = 1,
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MSTP_MASTER_STATE_USE_TOKEN = 2,
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MSTP_MASTER_STATE_WAIT_FOR_REPLY = 3,
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MSTP_MASTER_STATE_DONE_WITH_TOKEN = 4,
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MSTP_MASTER_STATE_PASS_TOKEN = 5,
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MSTP_MASTER_STATE_NO_TOKEN = 6,
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MSTP_MASTER_STATE_POLL_FOR_MASTER = 7,
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MSTP_MASTER_STATE_ANSWER_DATA_REQUEST = 8
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} MSTP_MASTER_STATE;
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/* The time without a DataAvailable or ReceiveError event before declaration */
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/* of loss of token: 500 milliseconds. */
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#define Tno_token 500
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/* The minimum time after the end of the stop bit of the final octet of a */
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/* received frame before a node may enable its EIA-485 driver: 40 bit times. */
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/* At 9600 baud, 40 bit times would be about 4.166 milliseconds */
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/* At 19200 baud, 40 bit times would be about 2.083 milliseconds */
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/* At 38400 baud, 40 bit times would be about 1.041 milliseconds */
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/* At 57600 baud, 40 bit times would be about 0.694 milliseconds */
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/* At 76800 baud, 40 bit times would be about 0.520 milliseconds */
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/* At 115200 baud, 40 bit times would be about 0.347 milliseconds */
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/* 40 bits is 4 octets including a start and stop bit with each octet */
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#define Tturnaround (40UL)
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/* turnaround_time_milliseconds = (Tturnaround*1000UL)/RS485_Baud; */
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/* The number of tokens received or used before a Poll For Master cycle */
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/* is executed: 50. */
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#define Npoll 50
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/* The number of retries on sending Token: 1. */
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#define Nretry_token 1
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/* The maximum idle time a sending node may allow to elapse between octets */
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/* of a frame the node is transmitting: 20 bit times. */
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#define Tframe_gap 20
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/* The maximum time after the end of the stop bit of the final */
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/* octet of a transmitted frame before a node must disable its */
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/* EIA-485 driver: 15 bit times. */
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#define Tpostdrive 15
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/* The width of the time slot within which a node may generate a token: */
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/* 10 milliseconds. */
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#define Tslot 10
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/* The maximum time a node may wait after reception of the token or */
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/* a Poll For Master frame before sending the first octet of a frame: */
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/* 15 milliseconds. */
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#define Tusage_delay 15
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#define DEFAULT_MAX_INFO_FRAMES 1
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#define DEFAULT_MAX_MASTER 127
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#define DEFAULT_MAC_ADDRESS 127
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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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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