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31 ******************************************************************************/
32 /*****************************************************************************
36 * This function provides a second delay using the Global Timer register in
37 * the ARM Cortex A53 MP core.
40 * MODIFICATION HISTORY:
42 * Ver Who Date Changes
43 * ----- -------- -------- -----------------------------------------------
44 * 5.00 pkp 05/29/14 First release
45 * 5.04 pkp 28/01/16 Modified the sleep API to configure Time Stamp
46 * generator only when disable using frequency from
47 * xparamters.h instead of hardcoding
50 ******************************************************************************/
51 /***************************** Include Files *********************************/
55 #include "xparameters.h"
57 /*****************************************************************************/
60 * This API is used to provide delays in seconds
62 * @param seconds requested
68 ****************************************************************************/
69 s32 sleep(u32 seconds)
72 /* Enable the counter only if it is disable */
73 if(((Xil_In32(XIOU_SCNTRS_BASEADDR + XIOU_SCNTRS_CNT_CNTRL_REG_OFFSET)) & XIOU_SCNTRS_CNT_CNTRL_REG_EN_MASK) != XIOU_SCNTRS_CNT_CNTRL_REG_EN){
75 /*write frequency to System Time Stamp Generator Register*/
76 Xil_Out32((XIOU_SCNTRS_BASEADDR + XIOU_SCNTRS_FREQ_REG_OFFSET),XIOU_SCNTRS_FREQ);
78 /*Enable the counter*/
79 Xil_Out32((XIOU_SCNTRS_BASEADDR + XIOU_SCNTRS_CNT_CNTRL_REG_OFFSET),XIOU_SCNTRS_CNT_CNTRL_REG_EN);
82 tEnd = tCur + (((XTime) seconds) * COUNTS_PER_SECOND);
86 } while (tCur < tEnd);