667dd6a210
struct asn_t -> struct tsch_asn_t struct asn_divisor_t -> tsch_asn_divisor_t ASN_ macros -> TSCH_ASN_ macros current_asn -> tsch_current_asn
126 lines
4.6 KiB
C
126 lines
4.6 KiB
C
/*
|
|
* Copyright (c) 2014, SICS Swedish ICT.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the Institute nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* This file is part of the Contiki operating system.
|
|
*
|
|
*/
|
|
|
|
/**
|
|
* \file
|
|
* Private TSCH definitions
|
|
* (meant for use by TSCH implementation files only)
|
|
* \author
|
|
* Simon Duquennoy <simonduq@sics.se>
|
|
* Beshr Al Nahas <beshr@sics.se>
|
|
*/
|
|
|
|
#ifndef __TSCH_PRIVATE_H__
|
|
#define __TSCH_PRIVATE_H__
|
|
|
|
/********** Includes **********/
|
|
|
|
#include "contiki.h"
|
|
#include "net/linkaddr.h"
|
|
#include "net/mac/tsch/tsch-asn.h"
|
|
#include "net/mac/tsch/tsch-conf.h"
|
|
#if CONTIKI_TARGET_COOJA || CONTIKI_TARGET_COOJA_IP64
|
|
#include "lib/simEnvChange.h"
|
|
#include "sys/cooja_mt.h"
|
|
#endif /* CONTIKI_TARGET_COOJA || CONTIKI_TARGET_COOJA_IP64 */
|
|
|
|
/************ Types ***********/
|
|
|
|
/* TSCH timeslot timing elements. Used to index timeslot timing
|
|
* of different units, such as rtimer tick or micro-second */
|
|
enum tsch_timeslot_timing_elements {
|
|
tsch_ts_cca_offset,
|
|
tsch_ts_cca,
|
|
tsch_ts_tx_offset,
|
|
tsch_ts_rx_offset,
|
|
tsch_ts_rx_ack_delay,
|
|
tsch_ts_tx_ack_delay,
|
|
tsch_ts_rx_wait,
|
|
tsch_ts_ack_wait,
|
|
tsch_ts_rx_tx,
|
|
tsch_ts_max_ack,
|
|
tsch_ts_max_tx,
|
|
tsch_ts_timeslot_length,
|
|
tsch_ts_elements_count, /* Not a timing element */
|
|
};
|
|
|
|
/***** External Variables *****/
|
|
|
|
/* 802.15.4 broadcast MAC address */
|
|
extern const linkaddr_t tsch_broadcast_address;
|
|
/* The address we use to identify EB queue */
|
|
extern const linkaddr_t tsch_eb_address;
|
|
/* The current Absolute Slot Number (ASN) */
|
|
extern struct tsch_asn_t tsch_current_asn;
|
|
extern uint8_t tsch_join_priority;
|
|
extern struct tsch_link *current_link;
|
|
/* TSCH channel hopping sequence */
|
|
extern uint8_t tsch_hopping_sequence[TSCH_HOPPING_SEQUENCE_MAX_LEN];
|
|
extern struct tsch_asn_divisor_t tsch_hopping_sequence_length;
|
|
/* TSCH timeslot timing (in rtimer ticks) */
|
|
extern rtimer_clock_t tsch_timing[tsch_ts_elements_count];
|
|
|
|
/* TSCH processes */
|
|
PROCESS_NAME(tsch_process);
|
|
PROCESS_NAME(tsch_send_eb_process);
|
|
PROCESS_NAME(tsch_pending_events_process);
|
|
|
|
/********** Functions *********/
|
|
|
|
/* Set TSCH to send a keepalive message after TSCH_KEEPALIVE_TIMEOUT */
|
|
void tsch_schedule_keepalive(void);
|
|
/* Leave the TSCH network */
|
|
void tsch_disassociate(void);
|
|
|
|
/************ Macros **********/
|
|
|
|
/* Calculate packet tx/rx duration in rtimer ticks based on sent
|
|
* packet len in bytes with 802.15.4 250kbps data rate.
|
|
* One byte = 32us. Add two bytes for CRC and one for len field */
|
|
#define TSCH_PACKET_DURATION(len) US_TO_RTIMERTICKS(32 * ((len) + 3))
|
|
|
|
/* Convert rtimer ticks to clock and vice versa */
|
|
#define TSCH_CLOCK_TO_TICKS(c) (((c) * RTIMER_SECOND) / CLOCK_SECOND)
|
|
#define TSCH_CLOCK_TO_SLOTS(c, timeslot_length) (TSCH_CLOCK_TO_TICKS(c) / timeslot_length)
|
|
|
|
/* Wait for a condition with timeout t0+offset. */
|
|
#if CONTIKI_TARGET_COOJA || CONTIKI_TARGET_COOJA_IP64
|
|
#define BUSYWAIT_UNTIL_ABS(cond, t0, offset) \
|
|
while(!(cond) && RTIMER_CLOCK_LT(RTIMER_NOW(), (t0) + (offset))) { \
|
|
simProcessRunValue = 1; \
|
|
cooja_mt_yield(); \
|
|
};
|
|
#else
|
|
#define BUSYWAIT_UNTIL_ABS(cond, t0, offset) \
|
|
while(!(cond) && RTIMER_CLOCK_LT(RTIMER_NOW(), (t0) + (offset))) ;
|
|
#endif /* CONTIKI_TARGET_COOJA || CONTIKI_TARGET_COOJA_IP64 */
|
|
#endif /* __TSCH_PRIVATE_H__ */
|