/*----------------------------------------------------------------------------
 * Copyright (c) <2013-2015>, <Huawei Technologies Co., Ltd>
 * All rights reserved.
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 * 1. Redistributions of source code must retain the above copyright notice, this list of
 * conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
 * of conditions and the following disclaimer in the documentation and/or other materials
 * provided with the distribution.
 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
 * to endorse or promote products derived from this software without specific prior written
 * permission.
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *---------------------------------------------------------------------------*/
 /*----------------------------------------------------------------------------
 * Notice of Export Control Law
 * ===============================================
 * Huawei LiteOS may be subject to applicable export control laws and regulations, which might
 * include those applicable to Huawei LiteOS of U.S. and the country in which you are located.
 * Import, export and usage of Huawei LiteOS in any manner by you shall be in compliance with such
 * applicable export control laws and regulations.
 *---------------------------------------------------------------------------*/

#include "math.h"
#include "time.h"
#include "los_task.h"
#include "los_api_task.h"
#include "los_inspect_entry.h"


#ifdef __cplusplus
#if __cplusplus
extern "C" {
#endif /* __cpluscplus */
#endif /* __cpluscplus */


UINT32 g_uwTskHiID;
UINT32 g_uwTskLoID;


#define TSK_PRIOR_HI 4
#define TSK_PRIOR_LO 5

UINT32 Example_TaskHi(VOID)
{
    UINT32 uwRet;

     dprintf("Enter TaskHi Handler.\r\n");

    /*延时2个Tick，延时后该任务会挂起，执行剩余任务中就高优先级的任务(g_uwTskLoID任务)*/
    uwRet = LOS_TaskDelay(2);
    if (uwRet != LOS_OK)
    {
        dprintf("Delay Task Failed.\r\n");
        return LOS_NOK;
    }

    /*2个tick时间到了后，该任务恢复，继续执行*/
    dprintf("TaskHi LOS_TaskDelay Done.\r\n");

    /*挂起自身任务*/
    uwRet = LOS_TaskSuspend(g_uwTskHiID);
    if (uwRet != LOS_OK)
    {
        dprintf("Suspend TaskHi Failed.\r\n");
		LOS_InspectStatusSetByID(LOS_INSPECT_TASK,LOS_INSPECT_STU_ERROR);
        return LOS_NOK;
    }
		
    dprintf("TaskHi LOS_TaskResume Success.\r\n");
		
	LOS_InspectStatusSetByID(LOS_INSPECT_TASK,LOS_INSPECT_STU_SUCCESS);
		
	/*删除任务*/
    if(LOS_OK != LOS_TaskDelete(g_uwTskHiID))
    {
        dprintf("TaskHi delete failed .\n");
        return LOS_NOK;
    }
		 
    return LOS_OK;
}

/*低优先级任务入口函数*/
UINT32 Example_TaskLo(VOID)
{
    UINT32 uwRet;

    dprintf("Enter TaskLo Handler.\r\n");

    /*延时2个Tick，延时后该任务会挂起，执行剩余任务中就高优先级的任务(背景任务)*/
    uwRet = LOS_TaskDelay(2);
    if (uwRet != LOS_OK)
    {
        dprintf("Delay TaskLo Failed.\r\n");
        return LOS_NOK;
    }

    dprintf("TaskHi LOS_TaskSuspend Success.\r\n");

    /*恢复被挂起的任务g_uwTskHiID*/
    uwRet = LOS_TaskResume(g_uwTskHiID);
    if (uwRet != LOS_OK)
    {
        dprintf("Resume TaskHi Failed.\r\n");
		LOS_InspectStatusSetByID(LOS_INSPECT_TASK,LOS_INSPECT_STU_ERROR);
        return LOS_NOK;
    }	
		
	/*删除任务*/
    if(LOS_OK != LOS_TaskDelete(g_uwTskLoID))
    {
    	dprintf("TaskLo delete failed .\n");
			  
		return LOS_NOK;
    }
		
    return LOS_OK;
}

/*任务测试入口函数，在里面创建优先级不一样的两个任务*/
UINT32 Example_TskCaseEntry(VOID)
{
    UINT32 uwRet;
    TSK_INIT_PARAM_S stInitParam;

    /*锁任务调度*/
    LOS_TaskLock();

    dprintf("LOS_TaskLock() Success!\r\n");

    stInitParam.pfnTaskEntry = (TSK_ENTRY_FUNC)Example_TaskHi;
    stInitParam.usTaskPrio = TSK_PRIOR_HI;
    stInitParam.pcName = "HIGH_NAME";
    stInitParam.uwStackSize = 0x400;
    stInitParam.uwResved   = LOS_TASK_STATUS_DETACHED;
    /*创建高优先级任务，由于锁任务调度，任务创建成功后不会马上执行*/
    uwRet = LOS_TaskCreate(&g_uwTskHiID, &stInitParam);
    if (uwRet != LOS_OK)
    {
        LOS_TaskUnlock();

        dprintf("Example_TaskHi create Failed!\r\n");
        return LOS_NOK;
    }

    dprintf("Example_TaskHi create Success!\r\n");

    stInitParam.pfnTaskEntry = (TSK_ENTRY_FUNC)Example_TaskLo;
    stInitParam.usTaskPrio = TSK_PRIOR_LO;
    stInitParam.pcName = "LOW_NAME";
    stInitParam.uwStackSize = 0x400;
    stInitParam.uwResved   = LOS_TASK_STATUS_DETACHED;
    /*创建低优先级任务，由于锁任务调度，任务创建成功后不会马上执行*/
    uwRet = LOS_TaskCreate(&g_uwTskLoID, &stInitParam);
    if (uwRet != LOS_OK)
    {
			  /*删除任务*/
				if(LOS_OK != LOS_TaskDelete(g_uwTskHiID))
				{
					dprintf("TaskHi delete failed .\n");
				}
			
        LOS_TaskUnlock();

        dprintf("Example_TaskLo create Failed!\r\n");
			
        return LOS_NOK;
    }

    dprintf("Example_TaskLo create Success!\r\n");

    /*解锁任务调度，此时会发生任务调度，执行就绪列表中最高优先级任务*/
    LOS_TaskUnlock();
		
    return uwRet;

}



#ifdef __cplusplus
#if __cplusplus
}
#endif /* __cpluscplus */
#endif /* __cpluscplus */


