/* 
  Ticker.cpp - esp32 library that calls functions periodically

  Copyright (c) 2017 Bert Melis. All rights reserved.
  
  Based on the original work of:
  Copyright (c) 2014 Ivan Grokhotkov. All rights reserved.
  The original version is part of the esp8266 core for Arduino environment.

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.

  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

#include "Ticker.h"

Ticker::Ticker() :
  _timer(nullptr) {}

Ticker::~Ticker() {
  detach();
}

void Ticker::_attach_us(uint64_t micros, bool repeat, callback_with_arg_t callback, void* arg) {
  esp_timer_create_args_t _timerConfig;
  _timerConfig.arg = reinterpret_cast<void*>(arg);
  _timerConfig.callback = callback;
  _timerConfig.dispatch_method = ESP_TIMER_TASK;
  _timerConfig.name = "Ticker";
  if (_timer) {
    esp_timer_stop(_timer);
    esp_timer_delete(_timer);
  }
  esp_timer_create(&_timerConfig, &_timer);
  if (repeat) {
    esp_timer_start_periodic(_timer, micros);
  } else {
    esp_timer_start_once(_timer, micros);
  }
}

void Ticker::detach() {
  if (_timer) {
    esp_timer_stop(_timer);
    esp_timer_delete(_timer);
    _timer = nullptr;
    _callback_function = nullptr;
  }
}

bool Ticker::active() const {
  if (!_timer) return false;
  return esp_timer_is_active(_timer);
}

void Ticker::_static_callback(void* arg)
{
  Ticker* _this = reinterpret_cast<Ticker*>(arg);
  if (_this && _this->_callback_function)
    _this->_callback_function();
}

