text: /******************************************************************************
  *
  * Copyright (C) 2018 Xilinx, Inc.  All rights reserved.
  *
  * 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.
  *
  * Use of the Software is limited solely to applications:
  * (a) running on a Xilinx device, or
  * (b) that interact with a Xilinx device through a bus or interconnect.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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  * SOFTWARE.
  *
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  * this Software without prior written authorization from Xilinx.
  *
  ******************************************************************************/
  /*****************************************************************************
  *
  * @file sleep.c
  *
  * This function provides a second delay using the Global Timer register in
  * the ARM Cortex A9 MP core.
  *
  * <pre>
  * MODIFICATION HISTORY:
  *
  * Ver   Who      Date     Changes
  * ----- -------- -------- -----------------------------------------------
  * 1.00a sa       18/04/25 First release
  * </pre>
  *
  ******************************************************************************/
  /***************************** Include Files *********************************/
  
  #include "sleep.h"
  #include "xtime_l.h"
  #include "xparameters.h"
  
  #if defined (SLEEP_TIMER_BASEADDR)
  #include "xil_sleeptimer.h"
  #endif
  
  /*****************************************************************************/
  /*
  *
  * This API is used to provide delays in seconds
  *
  * @param	seconds requested
  *
  * @return	0 always
  *
  * @note		None.
  *
  ****************************************************************************/
  unsigned sleep_M1(unsigned int seconds)
  {
  #if defined (SLEEP_TIMER_BASEADDR)
  	Xil_SleepTTCCommon(seconds, COUNTS_PER_SECOND);
  #else
    XTime tEnd, tCur;
  
    XTime_GetTime(&tCur);
    tEnd  = tCur + (((XTime) seconds) * COUNTS_PER_SECOND);
    do
    {
      XTime_GetTime(&tCur);
    } while (tCur < tEnd);
  #endif
  
    return 0;
  }
  