deac/osd-contiki
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

Merge pull request #1741 from simonduq/pr/tsch-adaptive-control-traffic

Browse source 
TSCH adaptive control traffic
This commit is contained in:
George Oikonomou 2016-11-25 15:53:32 +00:00 committed by GitHub
parent edf3a27920 27b20b09a3
commit 610eefc2ff
5 changed files with 43 additions and 12 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
core/net/mac/tsch/tsch-adaptive-timesync.c
View file

@ -38,8 +38,10 @@
*
*/
#include "tsch-adaptive-timesync.h"
#include "tsch-log.h"
#include "net/mac/tsch/tsch.h"
#include "net/mac/tsch/tsch-conf.h"
#include "net/mac/tsch/tsch-adaptive-timesync.h"
#include "net/mac/tsch/tsch-log.h"
#include <stdio.h>
#if TSCH_ADAPTIVE_TIMESYNC
@ -72,6 +74,10 @@ timesync_entry_add(int32_t val, uint32_t time_delta)
buffer[pos] = val;
if(timesync_entry_count < NUM_TIMESYNC_ENTRIES) {
timesync_entry_count++;
} else {
/* We now have accurate drift compensation.
* Increase keep-alive timeout. */
tsch_set_ka_timeout(TSCH_MAX_KEEPALIVE_TIMEOUT);
}
pos = (pos + 1) % NUM_TIMESYNC_ENTRIES;

2
core/net/mac/tsch/tsch-conf.h
View file

@ -174,7 +174,7 @@
#ifdef TSCH_CONF_ADAPTIVE_TIMESYNC
#define TSCH_ADAPTIVE_TIMESYNC TSCH_CONF_ADAPTIVE_TIMESYNC
#else
#define TSCH_ADAPTIVE_TIMESYNC 0
#define TSCH_ADAPTIVE_TIMESYNC 1
#endif
/* HW frame filtering enabled */

2
core/net/mac/tsch/tsch-rpl.c
View file

@ -85,7 +85,7 @@ tsch_rpl_callback_new_dio_interval(uint8_t dio_interval)
tsch_set_coordinator(1);
}
/* Set EB period */
tsch_set_eb_period(TSCH_EB_PERIOD);
tsch_set_eb_period((CLOCK_SECOND * 1UL << dag->instance->dio_intcurrent) / 1000);
/* Set join priority based on RPL rank */
tsch_set_join_priority(DAG_RANK(dag->rank, dag->instance) - 1);
} else {

18
core/net/mac/tsch/tsch.c
View file

@ -139,6 +139,8 @@ uint8_t tsch_join_priority;
static uint8_t tsch_packet_seqno = 0;
/* Current period for EB output */
static clock_time_t tsch_current_eb_period;
/* Current period for keepalive output */
static clock_time_t tsch_current_ka_timeout;
/* timer for sending keepalive messages */
static struct ctimer keepalive_timer;
@ -175,9 +177,15 @@ tsch_set_join_priority(uint8_t jp)
}
/*---------------------------------------------------------------------------*/
void
tsch_set_ka_timeout(uint32_t timeout)
{
tsch_current_ka_timeout = timeout;
}
/*---------------------------------------------------------------------------*/
void
tsch_set_eb_period(uint32_t period)
{
tsch_current_eb_period = period;
tsch_current_eb_period = MIN(period, TSCH_MAX_EB_PERIOD);
}
/*---------------------------------------------------------------------------*/
static void
@ -244,10 +252,10 @@ keepalive_send()
void
tsch_schedule_keepalive()
{
/* Pick a delay in the range [TSCH_KEEPALIVE_TIMEOUT*0.9, TSCH_KEEPALIVE_TIMEOUT[ */
if(!tsch_is_coordinator && tsch_is_associated) {
unsigned long delay = (TSCH_KEEPALIVE_TIMEOUT - TSCH_KEEPALIVE_TIMEOUT / 10)
+ random_rand() % (TSCH_KEEPALIVE_TIMEOUT / 10);
/* Pick a delay in the range [tsch_current_ka_timeout*0.9, tsch_current_ka_timeout[ */
if(!tsch_is_coordinator && tsch_is_associated && tsch_current_ka_timeout > 0) {
unsigned long delay = (tsch_current_ka_timeout - tsch_current_ka_timeout / 10)
+ random_rand() % (tsch_current_ka_timeout / 10);
ctimer_set(&keepalive_timer, delay, keepalive_send, NULL);
}
}

23
core/net/mac/tsch/tsch.h
View file

@ -49,18 +49,33 @@
#define TSCH_KEEPALIVE_TIMEOUT (12 * CLOCK_SECOND)
#endif
/* With TSCH_ADAPTIVE_TIMESYNC enabled: keep-alive timeout used after reaching
* accurate drift compensation. */
#ifdef TSCH_CONF_MAX_KEEPALIVE_TIMEOUT
#define TSCH_MAX_KEEPALIVE_TIMEOUT TSCH_CONF_MAX_KEEPALIVE_TIMEOUT
#else
#define TSCH_MAX_KEEPALIVE_TIMEOUT (60 * CLOCK_SECOND)
#endif
/* Max time without synchronization before leaving the PAN */
#ifdef TSCH_CONF_DESYNC_THRESHOLD
#define TSCH_DESYNC_THRESHOLD TSCH_CONF_DESYNC_THRESHOLD
#else
#define TSCH_DESYNC_THRESHOLD (4 * TSCH_KEEPALIVE_TIMEOUT)
#define TSCH_DESYNC_THRESHOLD (2 * TSCH_MAX_KEEPALIVE_TIMEOUT)
#endif
/* Period between two consecutive EBs */
#ifdef TSCH_CONF_EB_PERIOD
#define TSCH_EB_PERIOD TSCH_CONF_EB_PERIOD
#else
#define TSCH_EB_PERIOD (4 * CLOCK_SECOND)
#define TSCH_EB_PERIOD (16 * CLOCK_SECOND)
#endif
/* Max Period between two consecutive EBs */
#ifdef TSCH_CONF_MAX_EB_PERIOD
#define TSCH_MAX_EB_PERIOD TSCH_CONF_MAX_EB_PERIOD
#else
#define TSCH_MAX_EB_PERIOD (50 * CLOCK_SECOND)
#endif
/* Max acceptable join priority */
@ -157,8 +172,10 @@ extern const struct mac_driver tschmac_driver;
/* The the TSCH join priority */
void tsch_set_join_priority(uint8_t jp);
/* The the period at which EBs are sent */
/* The period at which EBs are sent */
void tsch_set_eb_period(uint32_t period);
/* The keep-alive timeout */
void tsch_set_ka_timeout(uint32_t timeout);
/* Set the node as PAN coordinator */
void tsch_set_coordinator(int enable);
/* Set the pan as secured or not */