89 lines
3.6 KiB
C
89 lines
3.6 KiB
C
/*
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* Copyright (c) 2015, SICS Swedish ICT.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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*/
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/**
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* \addtogroup tsch
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* @{
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* \file
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* TSCH constants
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* \author
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* Simon Duquennoy <simonduq@sics.se>
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*/
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#ifndef __TSCH_CONST_H__
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#define __TSCH_CONST_H__
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/********** Includes **********/
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#include "net/packetbuf.h"
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#include "net/mac/tsch/tsch-conf.h" /* Required for timestlot timing consts */
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/********** Constants **********/
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/* Link options */
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#define LINK_OPTION_TX 1
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#define LINK_OPTION_RX 2
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#define LINK_OPTION_SHARED 4
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#define LINK_OPTION_TIME_KEEPING 8
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/* Default IEEE 802.15.4e hopping sequences, obtained from https://gist.github.com/twatteyne/2e22ee3c1a802b685695 */
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/* 16 channels, sequence length 16 */
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#define TSCH_HOPPING_SEQUENCE_16_16 (uint8_t[]){ 16, 17, 23, 18, 26, 15, 25, 22, 19, 11, 12, 13, 24, 14, 20, 21 }
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/* 4 channels, sequence length 16 */
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#define TSCH_HOPPING_SEQUENCE_4_16 (uint8_t[]){ 20, 26, 25, 26, 15, 15, 25, 20, 26, 15, 26, 25, 20, 15, 20, 25 }
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/* 4 channels, sequence length 4 */
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#define TSCH_HOPPING_SEQUENCE_4_4 (uint8_t[]){ 15, 25, 26, 20 }
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/* 2 channels, sequence length 2 */
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#define TSCH_HOPPING_SEQUENCE_2_2 (uint8_t[]){ 20, 25 }
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/* 1 channel, sequence length 1 */
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#define TSCH_HOPPING_SEQUENCE_1_1 (uint8_t[]){ 20 }
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/* Max TSCH packet lenght */
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#define TSCH_PACKET_MAX_LEN MIN(127, PACKETBUF_SIZE)
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/* The jitter to remove in ticks.
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* This should be the sum of measurement errors on Tx and Rx nodes.
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* */
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#define TSCH_TIMESYNC_MEASUREMENT_ERROR US_TO_RTIMERTICKS(32)
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/* The approximate number of slots per second */
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#define TSCH_SLOTS_PER_SECOND (1000000 / tsch_timing_us[tsch_ts_timeslot_length])
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/* Calculate packet tx/rx duration in rtimer ticks based on packet length in bytes. */
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#define TSCH_PACKET_DURATION(len) US_TO_RTIMERTICKS(RADIO_BYTE_AIR_TIME * ((len) + RADIO_PHY_OVERHEAD))
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/* Convert rtimer ticks to clock and vice versa */
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#define TSCH_CLOCK_TO_TICKS(c) (((c) * RTIMER_SECOND) / CLOCK_SECOND)
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#define TSCH_CLOCK_TO_SLOTS(c, timeslot_length) (TSCH_CLOCK_TO_TICKS(c) / timeslot_length)
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#endif /* __TSCH_CONST_H__ */
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/** @} */
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