event_groups.hpp

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/****************************************************************************
 *
 *  Copyright (c) 2017, Danilo Pucci Smokovitz (dnlps@hotmail.com)
 *
 *  This file is part of the FreeRTOS Add-ons project.
 *
 *  Source Code:
 *  https://github.com/michaelbecker/freertos-addons
 *
 *  Project Page:
 *  http://michaelbecker.github.io/freertos-addons/
 *
 *  On-line Documentation:
 *  http://michaelbecker.github.io/freertos-addons/docs/html/index.html
 *
 *  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.
 *  + Credit is appreciated, but not required, if you find this project
 *    useful enough to include in your application, product, device, etc.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 *  OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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 *  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.
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 ***************************************************************************/
#ifndef EVENT_GROUPS_HPP_
#define EVENT_GROUPS_HPP_

#ifndef CPP_FREERTOS_NO_EXCEPTIONS
#include <exception>
#include <string>
#include <cstdio>
#ifdef CPP_FREERTOS_NO_CPP_STRINGS
#error "FreeRTOS-Addons require C++ Strings if you are using exceptions"
#endif
#endif
#include "FreeRTOS.h"
#include "event_groups.h"


namespace cpp_freertos {


#ifndef CPP_FREERTOS_NO_EXCEPTIONS

class EventGroupCreateException : public std::exception {

    public:
        EventGroupCreateException()
        {
            sprintf(errorString, "Event Group Constructor Failed");
        }

        explicit EventGroupCreateException(const char *info)
        {
            snprintf(errorString, sizeof(errorString),
                        "Event Group Constructor Failed %s", info);
        }

        virtual const char *what() const throw()
        {
            return errorString;
        }

    private:
        char errorString[80];
};
#endif


class EventGroup {

    //
    //  Public API
    //
    public:

        EventGroup();

#if( configSUPPORT_STATIC_ALLOCATION == 1 )

        EventGroup(StaticEventGroup_t *pxEventGroupBuffer);
#endif

        EventBits_t Sync(   const EventBits_t uxBitsToSet,
                            const EventBits_t uxBitsToWaitFor,
                            TickType_t xTicksToWait);

        EventBits_t WaitBits(   const EventBits_t uxBitsToWaitFor,
                                bool xClearOnExit,
                                bool xWaitForAllBits,
                                TickType_t xTicksToWait);

        EventBits_t ClearBits(const EventBits_t uxBitsToClear);

        BaseType_t ClearBitsFromISR(const EventBits_t uxBitsToClear);

        EventBits_t GetBits();

        EventBits_t GetBitsFromISR();

        EventBits_t SetBits(const EventBits_t uxBitsToSet);


        #if ( ( configUSE_TRACE_FACILITY == 1 ) && ( INCLUDE_xTimerPendFunctionCall == 1 ) && ( configUSE_TIMERS == 1 ) )

        BaseType_t SetBitsFromISR(  const EventBits_t uxBitsToSet,
                                    BaseType_t *pxHigherPriorityTaskWoken);

        #endif

        virtual ~EventGroup();

    //
    //  Protected API
    //  Not intended for use by application code.
    //
    protected:
        EventGroupHandle_t handle;

};

}

#endif