1 /******************************************************************************
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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
47 ******************************************************************************/
48 /***************************** Include Files *********************************/
52 #include "xparameters.h"
54 /*****************************************************************************/
57 * This API is used to provide delays in seconds
59 * @param seconds requested
65 ****************************************************************************/
66 s32 sleep(u32 seconds)
70 /*write 50MHz frequency to System Time Stamp Generator Register*/
71 Xil_Out32((XIOU_SCNTRS_BASEADDR + XIOU_SCNTRS_FREQ_REG_OFFSET),XIOU_SCNTRS_FREQ);
73 /*Enable the counter*/
74 Xil_Out32((XIOU_SCNTRS_BASEADDR + XIOU_SCNTRS_CNT_CNTRL_REG_OFFSET),XIOU_SCNTRS_CNT_CNTRL_REG_EN);
77 tEnd = tCur + (((XTime) seconds) * COUNTS_PER_SECOND);
81 } while (tCur < tEnd);
83 /*Disable the counter*/
84 Xil_Out32((XIOU_SCNTRS_BASEADDR + XIOU_SCNTRS_CNT_CNTRL_REG_OFFSET),(~(XIOU_SCNTRS_CNT_CNTRL_REG_EN)));