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TSCH: bugfix in tsch-adaptive-sync

This commit is contained in:
Simon Duquennoy 2017-07-14 17:21:11 +02:00 committed by Yasuyuki Tanaka
parent 0fd22a425a
commit a11c2f4a1f
1 changed files with 3 additions and 3 deletions
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6
os/net/mac/tsch/tsch-adaptive-timesync.c
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@ -68,7 +68,7 @@ tsch_adaptive_timesync_get_drift_ppm(void)
/*---------------------------------------------------------------------------*/
/* Add a value to a moving average estimator */
static int32_t
timesync_entry_add(int32_t val, uint32_t time_delta)
timesync_entry_add(int32_t val)
{
#define NUM_TIMESYNC_ENTRIES 8
static int32_t buffer[NUM_TIMESYNC_ENTRIES];
@ -101,9 +101,9 @@ timesync_learn_drift_ticks(uint32_t time_delta_asn, int32_t drift_ticks)
/* should fit in a 32-bit integer */
int32_t time_delta_ticks = time_delta_asn * tsch_timing[tsch_ts_timeslot_length];
int32_t real_drift_ticks = drift_ticks + compensated_ticks;
int32_t last_drift_ppm = (int32_t)((int64_t)real_drift_ticks * TSCH_DRIFT_UNIT / time_delta_ticks);
int32_t last_drift_ppm = (int32_t)(((int64_t)real_drift_ticks * TSCH_DRIFT_UNIT) / time_delta_ticks);
drift_ppm = timesync_entry_add(last_drift_ppm, time_delta_ticks);
drift_ppm = timesync_entry_add(last_drift_ppm);
TSCH_LOG_ADD(tsch_log_message,
snprintf(log->message, sizeof(log->message),