LoRaWANTimer.cpp

00001 /**
00002  / _____)             _              | |
00003 ( (____  _____ ____ _| |_ _____  ____| |__
00004  \____ \| ___ |    (_   _) ___ |/ ___)  _ \
00005  _____) ) ____| | | || |_| ____( (___| | | |
00006 (______/|_____)_|_|_| \__)_____)\____)_| |_|
00007     (C)2013 Semtech
00008 
00009 Description: Timer objects and scheduling management
00010 
00011 License: Revised BSD License, see LICENSE.TXT file include in the project
00012 
00013 Maintainer: Miguel Luis and Gregory Cristian
00014 
00015 
00016 Copyright (c) 2017, Arm Limited and affiliates.
00017 
00018 SPDX-License-Identifier: BSD-3-Clause
00019 */
00020 
00021 #include "lorawan/system/LoRaWANTimer.h"
00022 
00023 LoRaWANTimeHandler::LoRaWANTimeHandler()
00024     : _queue(NULL)
00025 {
00026 }
00027 
00028 LoRaWANTimeHandler::~LoRaWANTimeHandler()
00029 {
00030 }
00031 
00032 void LoRaWANTimeHandler::activate_timer_subsystem(events::EventQueue *queue)
00033 {
00034     _queue = queue;
00035 }
00036 
00037 lorawan_time_t LoRaWANTimeHandler::get_current_time( void )
00038 {
00039     const uint32_t current_time = _queue->tick();
00040     return (lorawan_time_t)current_time;
00041 }
00042 
00043 lorawan_time_t LoRaWANTimeHandler::get_elapsed_time(lorawan_time_t saved_time)
00044 {
00045     return get_current_time() - saved_time;
00046 }
00047 
00048 void LoRaWANTimeHandler::init(timer_event_t &obj, mbed::Callback<void()> callback)
00049 {
00050     obj.callback = callback;
00051     obj.timer_id = 0;
00052 }
00053 
00054 void LoRaWANTimeHandler::start(timer_event_t &obj, const uint32_t timeout)
00055 {
00056     obj.timer_id = _queue->call_in(timeout, obj.callback);
00057     MBED_ASSERT(obj.timer_id != 0);
00058 }
00059 
00060 void LoRaWANTimeHandler::stop(timer_event_t &obj)
00061 {
00062     _queue->cancel(obj.timer_id);
00063     obj.timer_id = 0;
00064 }