embeddedsw/lib/bsp/standalone/src/cortexa9/sleep.c

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/*****************************************************************************
*
* @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 ecm/sdm  11/11/09 First release
* 3.07a sgd      07/05/12 Updated sleep function to make use Global Timer
* </pre>
*
******************************************************************************/
/***************************** Include Files *********************************/

#include "sleep.h"
#include "xtime_l.h"
#include "xparameters.h"

/*****************************************************************************/
/*
*
* This API is used to provide delays in seconds
*
* @param	seconds requested
*
* @return	0 always
*
* @note		None.
*
****************************************************************************/
s32 sleep(u32 seconds)
{
  XTime tEnd, tCur;

  XTime_GetTime(&tCur);
  tEnd  = tCur + (((XTime) seconds) * COUNTS_PER_SECOND);
  do
  {
    XTime_GetTime(&tCur);
  } while (tCur < tEnd);

  return 0;
}