diff --git a/sample/CC3220S_LAUNCHXL/startsntp.c b/sample/CC3220S_LAUNCHXL/startsntp.c
--- /dev/null
@@ -0,0 +1,148 @@
+/*
+ * Copyright (c) 2017-2018, Texas Instruments Incorporated
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of Texas Instruments Incorporated nor the names of
+ * its contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <time.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include <ti/net/sntp/sntp.h>
+
+#include <ti/drivers/net/wifi/simplelink.h>
+
+/*
+ * Difference between NTP Epoch (seconds since January 1, 1900 GMT) and UNIX
+ * Epoch (seconds since January 1, 1970 GMT)
+ */
+#define TIME_BASEDIFF ((((uint32_t)70 * 365 + 17) * 24 * 3600))
+
+#define TIME_NTP_TO_UNIX(t) ((t) - TIME_BASEDIFF)
+
+#define NTP_SERVERS 1
+#define NTP_SERVER_PORT 123
+
+/* Time to wait for reply from server (seconds) */
+#define NTP_REPLY_WAIT_TIME 5
+
+/* Must wait at least 15 sec to retry NTP server (RFC 4330) */
+#define NTP_POLL_TIME 15
+
+/*
+ * ======== setNwpTime ========
+ * Set the time on the network processor
+ *
+ * ts: time in seconds since the Epoch
+ */
+static void setNwpTime(time_t ts)
+{
+ SlDateTime_t dt;
+ struct tm tm;
+
+ /* Convert time since Epoch to local time */
+ tm = *localtime(&ts);
+
+ /* Set system clock on network processor to validate certificate */
+ dt.tm_day = tm.tm_mday;
+ /* tm.tm_mon is the month since January, so add 1 to get the actual month */
+ dt.tm_mon = tm.tm_mon + 1;
+ /* tm.tm_year is the year since 1900, so add 1900 to get the actual year */
+ dt.tm_year = tm.tm_year + 1900;
+ dt.tm_hour = tm.tm_hour;
+ dt.tm_min = tm.tm_min;
+ dt.tm_sec = tm.tm_sec;
+ sl_DeviceSet(SL_DEVICE_GENERAL, SL_DEVICE_GENERAL_DATE_TIME,
+ sizeof(SlDateTime_t), (unsigned char *)(&dt));
+}
+
+/*
+ * ======== startSNTP ========
+ */
+void startSNTP(void)
+{
+ uint64_t ntpTimeStamp;
+ uint32_t currentTimeNtp = 0;
+ uint32_t currentTimeUnix = 0;
+ int32_t retval;
+ time_t ts;
+ SlNetSock_Timeval_t timeval;
+ struct timespec tspec;
+
+ /* Set timeout value for NTP server reply */
+ timeval.tv_sec = NTP_REPLY_WAIT_TIME;
+ timeval.tv_usec = 0;
+
+ do {
+ /* Get the time using the built in NTP server list: */
+ retval = SNTP_getTime(NULL, 0, &timeval, &ntpTimeStamp);
+ if (retval != 0) {
+ printf(
+ "startSNTP: couldn't get time (%ld), will retry in %d secs ...\n",
+ retval, NTP_POLL_TIME);
+ sleep(NTP_POLL_TIME);
+ printf("startSNTP: retrying ...\n");
+ }
+
+ /* Save the current (NTP Epoch based) time */
+ currentTimeNtp = ntpTimeStamp >> 32;
+
+ } while (retval < 0);
+
+ /*
+ * Set the time on the application processor. Always pass a time value
+ * based on the UNIX Epoch
+ */
+ currentTimeUnix = TIME_NTP_TO_UNIX(currentTimeNtp);
+ tspec.tv_nsec = 0;
+ tspec.tv_sec = currentTimeUnix;
+ if (clock_settime(CLOCK_REALTIME, &tspec) != 0) {
+ printf("startSNTP: Failed to set current time\n");
+ while(1);
+ }
+
+ /*
+ * Use time.h APIs to set the time on the NWP and display it on the console.
+ * Must call time.h APIs using the appropriate (toolchain dependent) Epoch
+ * time base
+ */
+#if defined(__TI_COMPILER_VERSION__)
+ /* For the TI toolchain, time APIs expect times based on the NTP Epoch */
+ ts = currentTimeNtp;
+#else
+ /* Time APIs for GCC and IAR expect times based on the UNIX Epoch */
+ ts = currentTimeUnix;
+#endif
+
+ /* Set the time on the network processor */
+ setNwpTime(ts);
+
+ /* Print out the time in calendar format: */
+ printf("Current time: %s\n", ctime(&ts));
+}