/****************************************************************************** * * Copyright (C) 2009 - 2014 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, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * XILINX 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. * * Except as contained in this notice, the name of the Xilinx shall not be used * in advertising or otherwise to promote the sale, use or other dealings in * 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. * *
* 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
* 
* ******************************************************************************/ /***************************** 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; }