121 lines
3.7 KiB
C
121 lines
3.7 KiB
C
|
/* time_helper.c
|
||
|
|
*
|
||
|
|
* Copyright (C) 2006-2023 wolfSSL Inc.
|
||
|
|
*
|
||
|
|
* This file is part of wolfSSL.
|
||
|
|
*
|
||
|
|
* wolfSSL is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License as published by
|
||
|
|
* the Free Software Foundation; either version 2 of the License, or
|
||
|
|
* (at your option) any later version.
|
||
|
|
*
|
||
|
|
* wolfSSL is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this program; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <string.h>
|
||
|
|
#include <lwip/apps/sntp.h>
|
||
|
|
|
||
|
|
#include "sdkconfig.h"
|
||
|
|
#include "esp_log.h"
|
||
|
|
|
||
|
|
#include "time_helper.h"
|
||
|
|
|
||
|
|
const static char* TAG = "Time Helper";
|
||
|
|
|
||
|
|
#define TIME_ZONE "PST-8"
|
||
|
|
/* NELEMS(x) number of elements
|
||
|
|
* To determine the number of elements in the array, we can divide the total size of
|
||
|
|
* the array by the size of the array element
|
||
|
|
* See https://stackoverflow.com/questions/37538/how-do-i-determine-the-size-of-my-array-in-c
|
||
|
|
**/
|
||
|
|
#define NELEMS(x) ( (int)(sizeof(x) / sizeof((x)[0])) )
|
||
|
|
#define NTP_SERVER_LIST ( (char*[]) { \
|
||
|
|
"pool.ntp.org", \
|
||
|
|
"time.nist.gov", \
|
||
|
|
"utcnist.colorado.edu" \
|
||
|
|
} \
|
||
|
|
)
|
||
|
|
/* #define NTP_SERVER_COUNT using NELEMS:
|
||
|
|
*
|
||
|
|
* (int)(sizeof(NTP_SERVER_LIST) / sizeof(NTP_SERVER_LIST[0]))
|
||
|
|
*/
|
||
|
|
#define NTP_SERVER_COUNT NELEMS(NTP_SERVER_LIST)
|
||
|
|
char* ntpServerList[NTP_SERVER_COUNT] = NTP_SERVER_LIST;
|
||
|
|
|
||
|
|
/* our NTP server list is global info */
|
||
|
|
extern char* ntpServerList[NTP_SERVER_COUNT];
|
||
|
|
|
||
|
|
|
||
|
|
int set_time(void)
|
||
|
|
{
|
||
|
|
/* we'll also return a result code of zero */
|
||
|
|
int res = 0;
|
||
|
|
int i = 0; /* counter for time servers */
|
||
|
|
time_t interim_time;
|
||
|
|
|
||
|
|
/* ideally, we'd like to set time from network,
|
||
|
|
* but let's set a default time, just in case */
|
||
|
|
struct tm timeinfo = {
|
||
|
|
.tm_year = 2022 - 1900,
|
||
|
|
.tm_mon = 11,
|
||
|
|
.tm_mday = 15,
|
||
|
|
.tm_hour = 3,
|
||
|
|
.tm_min = 25,
|
||
|
|
.tm_sec = 0
|
||
|
|
};
|
||
|
|
struct timeval now;
|
||
|
|
|
||
|
|
#ifndef NTP_SERVER_COUNT
|
||
|
|
#define NTP_SERVER_COUNT 0
|
||
|
|
char* ntpServerList[NTP_SERVER_COUNT];
|
||
|
|
#endif /* not defined: NTP_SERVER_COUNT */
|
||
|
|
|
||
|
|
#ifndef TIME_ZONE
|
||
|
|
#define TIME_ZONE "PST-8"
|
||
|
|
#endif /* not defined: TIME_ZONE */
|
||
|
|
|
||
|
|
|
||
|
|
/* set interim static time */
|
||
|
|
interim_time = mktime(&timeinfo);
|
||
|
|
now = (struct timeval){ .tv_sec = interim_time };
|
||
|
|
settimeofday(&now, NULL);
|
||
|
|
|
||
|
|
|
||
|
|
/* set timezone */
|
||
|
|
setenv("TZ", TIME_ZONE, 1);
|
||
|
|
tzset();
|
||
|
|
|
||
|
|
if (NTP_SERVER_COUNT) {
|
||
|
|
/* next, let's setup NTP time servers
|
||
|
|
*
|
||
|
|
* see https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/system/system_time.html#sntp-time-synchronization
|
||
|
|
*/
|
||
|
|
sntp_setoperatingmode(SNTP_OPMODE_POLL);
|
||
|
|
|
||
|
|
ESP_LOGI(TAG, "sntp_setservername:");
|
||
|
|
for (i = 0; i < NTP_SERVER_COUNT; i++) {
|
||
|
|
const char* thisServer = ntpServerList[i];
|
||
|
|
if (strncmp(thisServer, "\x00", 1) == 0) {
|
||
|
|
/* just in case we run out of NTP servers */
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
ESP_LOGI(TAG, "%s", thisServer);
|
||
|
|
sntp_setservername(i, thisServer);
|
||
|
|
}
|
||
|
|
sntp_init();
|
||
|
|
ESP_LOGI(TAG, "sntp_init done.");
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
ESP_LOGI(TAG, "No sntp time servers found.");
|
||
|
|
}
|
||
|
|
return res;
|
||
|
|
}
|
||
|
|
|