platform_alarm.c
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/*
* Copyright (C) 2017 Fundacion Inria Chile
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @{
* @ingroup net
* @file
* @brief Implementation of OpenThread alarm platform abstraction
*
* @author Jose Ignacio Alamos <jialamos@uc.cl>
* @}
*/
#include <stdint.h>
#include "msg.h"
#include "openthread/platform/alarm.h"
#include "ot.h"
#include "thread.h"
#include "xtimer.h"
#include "timex.h"
#define ENABLE_DEBUG (0)
#include "debug.h"
static xtimer_t ot_timer;
static msg_t ot_alarm_msg;
/**
* Set the alarm to fire at @p aDt milliseconds after @p aT0.
*
* @param[in] aInstance The OpenThread instance structure.
* @param[in] aT0 The reference time.
* @param[in] aDt The time delay in milliseconds from @p aT0.
*/
void otPlatAlarmStartAt(otInstance *aInstance, uint32_t aT0, uint32_t aDt)
{
DEBUG("openthread: otPlatAlarmStartAt: aT0: %" PRIu32 ", aDT: %" PRIu32 "\n", aT0, aDt);
ot_alarm_msg.type = OPENTHREAD_XTIMER_MSG_TYPE_EVENT;
if (aDt == 0) {
msg_send(&ot_alarm_msg, thread_getpid());
}
else {
int dt = aDt * US_PER_MS;
xtimer_set_msg(&ot_timer, dt, &ot_alarm_msg, thread_getpid());
}
}
/* OpenThread will call this to stop alarms */
void otPlatAlarmStop(otInstance *aInstance)
{
DEBUG("openthread: otPlatAlarmStop\n");
xtimer_remove(&ot_timer);
}
/* OpenThread will call this for getting running time in millisecs */
uint32_t otPlatAlarmGetNow(void)
{
uint32_t now = xtimer_now_usec() / US_PER_MS;
DEBUG("openthread: otPlatAlarmGetNow: %" PRIu32 "\n", now);
return now;
}