/*
 * MOST NetServices "Light" V3.2.7.0.1796 MultiInstance Patch
 *
 * Copyright (C) 2015 Microchip Technology Germany II GmbH & Co. KG
 *
 * 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 2 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/>.
 *
 * You may also obtain this software under a propriety license from Microchip.
 * Please contact Microchip for further information.
 *
 */

/*!
 * \file
 * \brief Internal header file of the timer management module.
 *
 * \cond MNS_INTERNAL_DOC
 * \addtogroup G_TIMER
 * @{
 */

#ifndef MNS_TIMER_H
#define MNS_TIMER_H

/*------------------------------------------------------------------------------------------------*/
/* Includes                                                                                       */
/*------------------------------------------------------------------------------------------------*/
#include "mns_cfg.h"
#include "mns_dl.h"
#include "mns_scheduler.h"

#ifdef __cplusplus
extern "C"
{
#endif

/*------------------------------------------------------------------------------------------------*/
/* Types                                                                                          */
/*------------------------------------------------------------------------------------------------*/
/*! \brief Function signature used for timer handler 
 *  \param args Void pointer to optional data
 */
typedef void (*Tm_Handler_t)(void *args);

/*------------------------------------------------------------------------------------------------*/
/* Structures                                                                                     */
/*------------------------------------------------------------------------------------------------*/
/*! \brief  Initialization structure of the timer management module. */
typedef struct Tm_InitData_
{
    /*! \brief Observer used to request current tick count value */
    CSingleObserver *get_tick_count_obs_ptr;
    /*! \brief Observer used to start application timer for delayed TM service calls */
    CSingleObserver *set_application_timer_obs_ptr;
    /*! \brief MOST NetServices instance ID */
    uint8_t mns_inst_id;

} Tm_InitData_t;

/*! \brief   Class structure of the a timer object. */
typedef struct CTimer_
{
    /*! \brief Node of the doubly linked (timer-) list */
    CDlNode node;
    /*! \brief Handler function which is invoked when the timer expires */
    Tm_Handler_t handler_fptr;
    /*! \brief Reference to optional parameter */
    void *args_ptr;
    /*! \brief The Timeout value before the timer expires for the first time, in milliseconds */
    uint16_t elapse;
    /*! \brief The period of the timer, in milliseconds */
    uint16_t period;
    /*! \brief Delta time related to next timer in list */
    uint16_t delta;
    /*! \brief Flag which signals that the timer is in use */
    bool in_use;
    /*! \brief Flag to check if timer object has changed within timer handler callback function */
    bool changed;

} CTimer;

/*! \brief   Class structure of the timer management */
typedef struct CTimerManagement_
{
    /*! \brief Doubly linked list to manage the active timers */
    CDlList timer_list;
    /*! \brief Subject to request current tick count */
    CSingleSubject get_tick_count_subject;
    /*! \brief Subject to start the application timer which triggers a MNS service call */
    CSingleSubject set_application_timer_subject;
    /*! \brief Service instance to add the timer management to the scheduler */
    CService tm_srv;
    /*! \brief Last tick count value (saved at TM service) */
    uint16_t last_tick_count;
    /*! \brief Signals that the application timer callbacks are used */
    bool delayed_tm_service_enabled;
    /*! \brief Indicates that the application timer must be started */
    bool set_service_timer;
    /*! \brief MOST NetServices instance ID */
    uint8_t mns_inst_id;

} CTimerManagement;

/*------------------------------------------------------------------------------------------------*/
/* Prototypes of class CTimerManagement                                                           */
/*------------------------------------------------------------------------------------------------*/
extern void Tm_Ctor(CTimerManagement *self, CScheduler *scd, const Tm_InitData_t *init_ptr);
extern void Tm_SetTimer(CTimerManagement *self, CTimer *timer_ptr, Tm_Handler_t handler_fptr, 
                        void *args_ptr, uint16_t elapse, uint16_t period);
extern void Tm_ClearTimer(CTimerManagement *self, CTimer *timer_ptr);
extern void Tm_CheckForNextService(CTimerManagement *self);
extern void Tm_TriggerService(CTimerManagement *self);
extern void Tm_StopService(CTimerManagement *self);

/*------------------------------------------------------------------------------------------------*/
/* Prototypes of class CTimer                                                                     */
/*------------------------------------------------------------------------------------------------*/
extern void T_Ctor(CTimer *self);
extern bool T_IsTimerInUse(CTimer *self);

#ifdef __cplusplus
}   /* extern "C" */
#endif

#endif  /* #ifndef MNS_TIMER_H */

/*!
 * @}
 * \endcond
 */

/*------------------------------------------------------------------------------------------------*/
/* End of file                                                                                    */
/*------------------------------------------------------------------------------------------------*/