io_wdg.hpp

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/*
 *  SatNOGS-COMMS MCU software
 *
 *  Copyright (C) 2024, Libre Space Foundation <http://libre.space>
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 *  SPDX-License-Identifier: GNU General Public License v3.0 or later
 */
 
#pragma once
 
#include <zephyr/kernel.h>
 
namespace satnogs::comms
{

class io_wdg
{
public:
  static constexpr uint32_t min_period_mins = 240;

  static constexpr uint32_t max_period_mins = 20160;
 
  static constexpr uint32_t task_wdg_interval = 30000;

  static io_wdg &
  get_instance()
  {
    static io_wdg instance;
    return instance;
  }
 
  io_wdg(io_wdg const &) = delete;
 
  void
  operator=(io_wdg const &) = delete;
 
  void
  start();
 
  void
  set_period(uint32_t period_mins);
 
  uint32_t
  period_mins();
 
  void
  reset();
 
private:
  static void
  monitor_thread(void *arg1, void *arg2, void *arg3);
 
  io_wdg();
 
  struct k_thread m_thread_data;
  k_tid_t         m_tid;
  k_mutex         m_mtx;
  uint32_t        m_period_mins;
  int64_t         m_last_reset_ts;
};
 
} // namespace satnogs::comms