timer.h

/******************************************************************************
The MIT License(MIT)
 
Embedded Template Library.
https://github.com/ETLCPP/etl
https://www.etlcpp.com
 
Copyright(c) 2017 John Wellbelove
 
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files(the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions :
 
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
 
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
******************************************************************************/
 
#ifndef ETL_TIMER_INCLUDED
#define ETL_TIMER_INCLUDED
 
#include "platform.h"
#include "atomic.h"
 
#include <stdint.h>
 
//*****************************************************************************
// Definitions common to timers.
//*****************************************************************************
 
namespace etl
{
#ifdef ETL_TIMER_SEMAPHORE_TYPE
  typedef ETL_TIMER_SEMAPHORE_TYPE timer_semaphore_t;
#else
  #if ETL_HAS_ATOMIC
    typedef etl::atomic_uint32_t timer_semaphore_t;
  #endif
#endif
 
  //***************************************************************************
  //***************************************************************************
  struct timer
  {
    // Timer modes.
    struct mode
    {
      enum
      {
        SINGLE_SHOT = false,
        REPEATING   = true,
 
        Single_Shot = false,
        Repeating   = true
      };
 
      typedef bool type;
    };
 
    // Timer start status.
    struct start
    {
      enum
      {
        DELAYED   = false,
        IMMEDIATE = true,
 
        Delayed   = false,
        Immediate = true
      };
 
      typedef bool type;
    };
 
    // Timer id.
    struct id
    {
      enum
      {
        NO_TIMER = 255,
        No_Timer = 255
      };
 
      typedef uint_least8_t type;
    };
 
    // Timer state.
    struct state
    {
      enum
      {
        INACTIVE = 0xFFFFFFFFUL,
        Inactive = 0xFFFFFFFFUL
      };
    };
 
    // Timer time interval.
    struct interval
    {
      enum
      {
        No_Active_Interval = 0xFFFFFFFFUL
      };
 
      typedef uint32_t type;
    };
  };
}
 
#endif