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93 lines
2.3 KiB
C
93 lines
2.3 KiB
C
/*
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* Copyright (C) 2017 Fundacion Inria Chile
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* 2017 Inria
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @{
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* @ingroup pkg_semtech-loramac
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* @file
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* @brief Compatibility functions for controlling the LoRaMAC timers
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*
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* @author Jose Ignacio Alamos <jialamos@uc.cl>
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* @author Alexandre Abadie <alexandre.abadie@inria.fr>
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* @author Francisco Molina <francisco.molina@inria.cl>
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* @}
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*/
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#include "xtimer.h"
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#include "thread.h"
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#include "semtech-loramac/timer.h"
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extern kernel_pid_t semtech_loramac_pid;
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void TimerInit(TimerEvent_t *obj, void (*cb)(void))
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{
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obj->dev.target = 0;
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obj->running = 0;
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obj->cb = cb;
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}
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void TimerReset(TimerEvent_t *obj)
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{
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TimerStop(obj);
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TimerStart(obj);
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}
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void TimerStart(TimerEvent_t *obj)
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{
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obj->running = 1;
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xtimer_t *timer = &(obj->dev);
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msg_t *msg = &(obj->msg);
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msg->type = MSG_TYPE_MAC_TIMEOUT;
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msg->content.ptr = obj->cb;
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xtimer_set_msg(timer, obj->timeout, msg, semtech_loramac_pid);
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}
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void TimerStop(TimerEvent_t *obj)
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{
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obj->running = 0;
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xtimer_remove(&(obj->dev));
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}
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void TimerSetValue(TimerEvent_t *obj, uint32_t value)
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{
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if (obj->running) {
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xtimer_remove(&(obj->dev));
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}
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/* According to the lorawan specifications, the data sent from the gateway
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could arrive with a short shift in time of +/- 20ms. Here the timeout is
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triggered 50ms in advance to make sure the radio switches to RX mode on
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time and doesn't miss any downlink messages, taking in consideration
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possible xtimer inaccuracies. */
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obj->timeout = (value - 50) * US_PER_MS;
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}
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TimerTime_t TimerGetCurrentTime(void)
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{
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uint64_t CurrentTime = xtimer_now_usec64() / US_PER_MS;
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return (TimerTime_t)CurrentTime;
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}
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TimerTime_t TimerGetElapsedTime(TimerTime_t savedTime)
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{
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uint64_t CurrentTime = xtimer_now_usec64() / US_PER_MS;
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return (TimerTime_t)(CurrentTime - savedTime);
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}
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TimerTime_t TimerGetFutureTime(TimerTime_t eventInFuture)
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{
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uint64_t CurrentTime = xtimer_now_usec64() / US_PER_MS;
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return (TimerTime_t)(CurrentTime + eventInFuture);
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}
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void TimerLowPowerHandler( void )
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{
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}
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